Pico Controllers Bulletin 1760 User Manual
Important User Information Solid state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (Publication SGI-1.1 available from your local Rockwell Automation sales office or online at http://www.ab.com/manuals/gi) describes some important differences between solid state equipment and hard-wired electromechanical devices.
Summary of Changes The information below summarizes the changes to this manual since the last printing as publication 1760-UM001C-EN-P, April 2005. To help you locate new and updated information in this release of the manual, we have included change bars as shown to the right of this paragraph. Catalog Number Release History The following table shows the history of Pico catalog numbers.
Summary of Changes 2 New Information Publication 1760-UM001D-EN-P - September 2005 The table below lists sections where new information has been added. For This New Information See Changed Catalog Number 1760-L12NWA and 1760-L18NWA to 1760-L12NWN and 1760-L18NWN. Throughout manual Changed inputs to 24V ac.
Table of Contents Preface Who Should Use this Manual. . . . . . . . . . . Purpose of this Manual . . . . . . . . . . . . . . . Common Techniques Used in this Manual . Rockwell Automation Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preface-1 Preface-1 Preface-2 Preface-3 Chapter 1 System Overview Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Hardware Versions . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents ii Chapter 5 Save and Load Circuit Diagrams Interface to Memory Module and Programming Cable . . . . 5-1 Memory Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 PicoSoft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5 Chapter 6 Pico System Settings Password Protection . . . . . . . . . . . . . . . . Change the Menu Language . . . . . . . . . . Change Parameters . . . . . . . . . . . . . . . . .
Table of Contents iii Chapter 11 DC Simulator Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1 Installation Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2 Appendix A Specifications Physical Specifications. . . . . . Environmental Specifications . Electrical Specifications . . . . . Power Supply . . . . . . . . . . . . Inputs. . . . . . . . . . . . . . . . . . Outputs . . . . . . . . . . . . . . . . Cycle Time . . . . . . . . . . . . . .
Table of Contents iv Publication 1760-UM001D-EN-P - September 2005
Preface Read this preface to familiarize yourself with the rest of the manual. It provides information concerning: • • • • • Who Should Use this Manual who should use this manual the purpose of this manual related documentation conventions used in this manual Rockwell Automation support Use this manual if you are responsible for designing, installing, programming, or troubleshooting control systems that use Pico controllers.
Preface 2 Related Documentation The following documents contain additional information concerning Rockwell Automation products. To obtain a copy, contact your local Rockwell Automation office or distributor. For Read this Document Document Number A basic overview of Pico and an introduction to Pico programming.
Preface Rockwell Automation Support 3 Rockwell Automation offers support services worldwide, with over 75 Sales/Support Offices, 512 authorized Distributors and 260 authorized Systems Integrators located throughout the United States alone, plus Rockwell Automation representatives in every major country in the world.
Preface 4 Publication 1760-UM001D-EN-P - September 2005
Chapter 1 System Overview Overview Pico is an electronic control relay with built-in logic, timer, counter, and real-time clock functions. Pico is a control and input device that can perform a variety of tasks in building and machine applications. Pico is programmed using ladder diagrams. Each programming element is entered directly via the Pico display.
1-2 System Overview Hardware Versions Pico Controllers 1 7 2 Del Alt 3 4 8 Esc 7 Del Ok 5 Alt 8 Esc 6 Ok 5 8 3 5 Publication 1760-UM001D-EN-P - September 2005 Item Description 1 Incoming Power 2 Inputs 3 Status LED 4 Buttons 5 Socket for memory module or PC interface cable 6 Outputs 7 LCD display 8 Write-On Surface
System Overview 1-3 Pico controllers are available for 12V dc, 24V dc, 24V ac and 120/240V ac operation and come in both 12-I/O and 18-I/O sizes. Pico is available with and without a real-time clock, and with and without a display and keypad. See the following table for details.
1-4 System Overview Expansion Modules 2 1 3 5 3 4 Item Description 1 Incoming Power 2 Inputs 3 Write-On Surface 4 Outputs 5 Status LED Use Pico expansion modules with Pico ’-EX’ models to increase your I/O capacity. The following modules are available.
System Overview 1-5 Expansion modules connect directly to the Pico controller as shown below. Expansion Module Connector(1) (replacement part 1760-RPLCONN) Pico Controller: 1760-L18AWA-EX 1760-L18BWB-EX 1760-L18AWA-EXND 1760-L18BWB-EXND 1760-L18DWD-EX 1760-L20BBB-EX 1760-L20BBB-EXND ATTENTION Expansion Module: 1760-IA12XOW6I 1760-IB12XOB8 1760-IA12XOW4IF 1760-IB12XOW6I 1760-OW2 (1) Included with expansion module. Catalog Number is listed as a replacement part.
1-6 System Overview Remote Processor Remote Processor Features 1 2 1. 24V dc Voltage supply 2. Interface Terminal (with cover) for connecting cable Operating Principles Operating Buttons Del Esc Alt Ok Button Function Del Delete object in the circuit diagram Alt Special functions in the circuit diagram Cursor Buttons Move cursor Select menu item Choose contact numbers, values, times, etc.
System Overview 1-7 Using Menus to Choose Values Press To Show system menu Del and Alt together • Go to next menu level. • Select menu item. Ok • Store your entry. • Return to last menu level. • Cancel your entry since the last Ok. Esc • Change menu item. • Change value. • Change position.
1-8 System Overview 1760-L18xxx Status Display Inputs Weekday/Time Outputs 12........... MO 02:00 ..34.... RUN RUN/STOP Mode Inputs 1 and 2 ON Outputs 3 and 4 ON 1760-L18xxx-EX and 1760-L20xxx Status Display for Expansion Module Inputs Expansion Weekday/Time Outputs 1..........12 RS AC P- AC Expansion OK/P Buttons MO 10:42 ST 1.......
System Overview 1-9 Menu Structure Main Menu Without Optional Password Protection STOP: Circuit diagram menu RUN: Power flow display PROGRAM... STOP RUN å PARAMETER INFO... SET CLOCK RUN STOP PROGRAM DELETE PROG CARD ... PROGRAM... STOP RUN PARAMETER INFO... SET CLOCK PROGRAM... RUN PARAMETER INFO...
1-10 System Overview Main Menu Setting Summer Time PROGRAM... RUN PARAMETER INFO... SET CLOCK SET CLOCK SUMMER TIME SET CLOCK SUMMER TIME SET CLOCK SUMMER TIME SET CLOCK SUMMER TIME NONE RULE... EU GB US å NONE RULE... EU GB US SUMMER START SUMMER END AM HH:MM ---DD.MM:00.00 HH.MM:00:00 DIFF: 0:00 NONE RULE... EU GB US NONE RULE... EU GB US SUMMER START SUMMER END SUMMER START SUMMER END AM HH:MM ---DD.MM:00.00 HH.MM:00:00 DIFF: 0:00 Main Menu with Password Protection Main Menu PASSWORD...
System Overview 1-11 System Menu System sECURITY... SYSTEM... LANGUAGE ... CONFIGURATOR Password Entry Set Password Password RANGE... DEBOUNCE OFF P ON STOP MODE DEBOUNCE OFF DEBOUNCE OFF P ON STOP MODE DEBOUNCE OFF P ON STOP MODE DEBOUNCE OFF P ON STOP MODE (2) RETENTION ON SECURITY... SYSTEM... LANGUAGE... CONFIGURATOR ENTER PASSW: XXXX CHANGE PW ACTIVATE PW PROGRAM å PARAMETER CLOCK OPRTNG MODE INTERFACE DELETE FUNCT Password RANGE... SECURITY... SYSTEM... LANGUAGE...
1-12 System Overview Selecting or Toggling Between Menu Items Cursor up or down PROGRAM ... RUN PARAMETER INFO Highlighted choice flashes Select or Toggle Ok Cursor Display There are two different cursor types: flashing block and flashing cursor. HH:MM 14:23 DD.MM YEAR 17.03 2004 Full block navigation is shown as a flashing block: • Move cursor with the left/right arrows • In circuit diagram also with up/down arrows HH:MM 14:23 DD.MM YEAR 17.
Chapter 2 Installation Pico is installed in the following order: • • • • • • connect devices together, if necessary Mount Use surge suppressors Wire the inputs Wire the outputs Connect incoming power Prevent Electrical Shock ATTENTION Follow these guidelines when you handle the controller: • Remove power before working on any of the wiring to Pico. • Touch a grounded object to discharge static potential. • Wear an approved wrist-strap grounding device. • If available, use a static-safe work station.
2-2 Installation European Communities (EC) Directive Compliance If this product has the CE mark it is approved for installation within the European Union and EEA regions. It has been designed and tested to meet the following directives.
Installation Connect the Expansion Module 2-3 Connect the expansion module to the controller using the connector as shown below: 1 2 See Expansion Modules on page 1-4 for information on using the modules with your Pico controller. Mount the Pico Controller Install Pico in an enclosure, switch cabinet, or distribution board so that the power feed and terminal connections cannot be touched accidentally during operation. Clip Pico onto a DIN rail or install directly onto a panel using the mounting feet.
2-4 Installation Minimum Spacing 3 cm (1.18 in.) 3 cm (1.18 in.) 3 cm (1.18 in.) Maintain spacing from enclosure walls, wireways, adjacent equipment, etc. Allow 3 cm (1.18 in.) of space on all sides for adequate ventilation, as shown: 3 cm (1.18 in.) DIN Rail Mount 1. Mount your DIN rail. Make sure that the placement of the Pico unit on the DIN rail meets the recommended spacing requirements. 2. Hook the top slot over the DIN rail. 3.
Installation 2-5 Install on a Mounting Plate To install the unit using mounting screws: 1. Snap the mounting feet in place. 2. Drill holes at the mounting feet positions, shown below. 3. Mount the controller. Click 1760-OW2 1760-L12xxx 1760-L18xxx, 1760-L20xxx and Expansion Modules For mounting dimensions, see Dimensions on page A-14.
2-6 Installation Install the Remote Processor The remote processor is used for terminal mode operation of Pico controllers and I/O modules. The remote processor is used with either a Display or Display/Keypad Unit. Remote Processor Terminal Operation 1760-L18... 1760-L20... 1760-L12... 1760-LDF ... DEL A LT DEL 1760-RM E SC ALT OK ESC OK 1760-RM-Pico 1760-RM-GFX 1760-GFX Display Unit Front View Flush Mount Flush Mount the Display and Remote Processor 3 2 1 M = 1.2 – 2 Nm 10.6 - 17.
Installation 2-7 Removal Procedure Remove the Remote Processor 3 2 1 1760 -RM 1. Insert the screwdriver into the mounting slide. 2. Push screwdriver to the right to open the slide. 3. Remove the processor unit from the display unit. 4. Loosen the fixing rings. 5. Remove the display unit from the panel. Make Connections Connect the Power Supply Remote Processor Power Supply Connection 1760-RM… L01+ L02+ L01– >1 A U e = 24 V dc (20.4 – 28.8 V H dc) I e = 150 mA 0.6 x 3.
2-8 Installation Connect the Serial Cable 4 2 1760-RM cable X5 X4 X3 X2 X1 1 3 Cable Wire Color Code X5 X4 X3 X2 X1 green white yellow brown gray 1. Remove the interface cover. 2. Using a screwdriver, push on the terminal latch. 3. Insert each wire into its designated terminal on the interface connector. 4. Replace the interface cover. Plug the other end of the cable into the Pico controller or I/O module. Wire Terminals Required Tools Slot-head screwdriver (width: 3.5 mm, torque: 0.57 to 0.
Installation 2-9 Wire Size • Solid AWG 22 to AWG 12 • Stranded AWG 22 to AWG 12 Connect the Incoming Power For incoming power technical specifications, refer to Appendix A. ELECTRICAL SHOCK HAZARD ATTENTION The memory module and PC-cable socket are at the potential of L2. There is a danger of electric shock if L2 is not grounded. Do not make contact with electrical components under the socket cover. A brief current surge is produced when powering on the unit for the first time.
2-10 Installation 1760-IA12XOW6I Expansion Module L1 L2 F1 NC NC R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 L1 100 to 240V ac 50/60Hz Inputs x 100 to 240V ac 1760-L12BWB, -L12BWB-NC, -L12BWB-ND, -L18BWB-EX +24V 0V F1 +24 V COM 24V dc Publication 1760-UM001D-EN-P - September 2005 I1 I2 I3 I4 I5 I6 I7 L2 I8 Inputs x 24V dc (I7,I8 0 to 10V)
Installation 2-11 1760-IB12XOB8 Expansion Module +24V dc 0V dc F1 NC NC R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 +24V COM 24V dc Inputs x 24V dc 1760-L12DWD +12V dc 0V F1 +12 V COM 12V dc I1 I2 I3 I4 I5 I6 I7 I8 Inputs x 12V dc The dc controllers are protected against polarity reversal. To ensure that the unit works correctly, ensure that the polarity of each terminal is correct.
2-12 Installation Use Surge Suppressors Inductive load devices, such as motor starters and solenoids, require the use of some type of surge suppression to protect and extend the operating life of the controller’s output contacts. Switching inductive loads without surge suppression can SIGNIFICANTLY reduce the life expectancy of relay contacts. By adding a suppression device directly across the coil of an inductive device, you prolong the life of the output or relay contacts.
Installation 2-13 Surge Suppression for Inductive ac Load Devices Output Device Varistor Output Device Output Device RC Network Surge Suppressor For inductive dc load devices, a diode is suitable. A 1N4004 diode is acceptable for most applications. A surge suppressor can also be used. See the table on page 2-14 for recommended suppressors. As shown in the illustration below, these surge suppression circuits connect directly across the load device.
2-14 Installation Recommended Surge Suppressors Use the Allen-Bradley surge suppressors shown in the following table for use with relays, contactors, and starters.
Installation 2-15 Connecting AC Inputs ATTENTION For Pico controllers with ac inputs, connect the inputs to the same phase as the power feed L1, in accordance with VDE, IEC, UL and CSA safety regulations. Otherwise, Pico may not detect the switching level or, it may be damaged by excess voltage. Input Specification Input Signal Voltage Range OFF signal: 0 to 40V ac Input Current I1 to I6, I9 to I12, R1 to R12: 0.25 mA at 120V ac, 0.
2-16 Installation Wire Lengths Severe electromagnetic interference to wires can cause inputs to signal 1 without the proper signal being applied. Observe the following maximum cable lengths: • I1 to I6, I9 to I12, R1 to R12: 40m (130 ft) without additional circuits • I7 and I8: 100m (330 ft) without additional circuits ATTENTION Do not use reed relay contacts on I7 or I8. These may burn or melt due to the high current of I7 and I8. Two-wire proximity sensors have a residual off-state leakage current.
Installation 2-17 To limit the current to 400 mA, connect a 1K Ω resistor in series upstream from the circuit as shown. . L1 L2 1A 1K Ω 0.25W resistor L1 L2 100 nF, 275V ac capacitor I1 100 to 240V ac 50/60Hz I2 I3 I4 I5 I6 I7 I8 Inputs x 100 to 240V ac Connect 24 V dc Inputs Use input terminals I1 to I8 (or I12 for 18-point Pico) to connect push-buttons, switches, or 3- or 4-wire proximity switches. Given the high off-state leakage current, do not use 2-wire proximity switches.
2-18 Installation Example Using 1760-IB12XOB8 F1 +24V dc 0V NC NC R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 +24V COM 24V dc Inputs x 24V dc Connect 12 V dc Inputs Use input terminals I1 to I8 to connect push-buttons, switches, or 3 or 4-wire proximity switches. Given the high off-state leakage current, do not use 2-wire proximity switches. Input Specification Input Signal Voltage Range OFF signal: 0 to 4V dc ON signal: 8V to 15.6V dc Input Current I1 to I6, I9 and I10: 3.
Installation 2-19 Connect Analog Inputs (1760-LxxBWB-xx or 1760-LxxDWD only) Inputs I7 and I8, and if present I11 and I12, can also be used to connect analog devices ranging from 0 to 10V dc. ATTENTION Analog signals are more sensitive to interference than digital signals. Consequently, more care must be taken when routing and connecting the signal lines.
2-20 Installation The following four circuits illustrate application examples for analog value processing. Ensure that the reference potential is connected. Connect the 0V of the power supply unit for the different setpoint potentiometers and sensors to the 0V of the power feed.
Installation 2-21 Temperature Sensors V dc 0V +V dc (12V dc or 24V dc) -0V Out 0 to 10V -35 to +55˚C (-31 to +131˚F) F1 V dc COM I1 V dc I2 I3 I4 I5 I6 I7 I8 Inputs x V dc (I7,I8 0 to 10V) V dc = 12Vdc for 1760-L12DWD V dc = 24V dc for 1760-LxxBWB-xx 20 mA Sensors V dc 0V 1A 4 to 20 mA 500Ω V dc COM I1 V dc I2 I3 I4 I5 I6 I7 I8 Inputs x V dc (I7,I8 0 to 10V) V dc = 12Vdc for 1760-L12DWD V dc = 24V dc for 1760-LxxBWB-xx Connect 4 to 20 mA (0 to 20 mA) sensors using an externa
2-22 Installation Connect Outputs The Q output terminals function as isolated contacts, as shown below. Q1 Q1 Q1 1 2 Outputs are controlled via the corresponding output relays: • • • • Q1 to Q4 Q1 to Q8 S1 to S6 S1 to S8 You can use the signal states of the output relays as make or break contacts in the Pico program to provide additional logic conditions. The relay or transistor outputs are used to switch loads such as fluorescent tubes, filament bulbs, contactors, relays or motors.
Installation 2-23 1760-L18AWA-xx and 1760-L18BWB-EX 1 2 S1 10 000 000 1 2 1 2 S3 S2 1 1 2 S4 2 S5 1 2 S6 R 24 V 120 V 240 V 8A 8A 8A 2A 2A 2A 1000 W 0V ,N 10 x 58 W 25.000 < 8 A / B 16 L1, L2, L3 (120/240 V) + 24 V 1760-IA12XOW6I 1 2 S1 10 000 000 1 2 S2 1 2 S3 1 1 2 S4 S5 2 1 2 S6 R 24 V 120 V 240 V 8A 8A 8A 2A 2A 2A 1000 W 0V ,N 10 x 58 W 25.000 < 8 A / B 16 L1, L2, L3 (120/240 V) + 24 V 1760-OW2 Unlike inputs, you can connect different phases to the outputs. .
2-24 Installation Connect Transistor Outputs 1760-Ixxx +24 VQ 0 VQ Q1 Q2 Q3 Q4 F 10 A 0VH f 2.5 A + 24 V H 20.4 – 28.8 V H 24 V R L 0.5 A 0.5 A 5 W/24 V 1760-Ixxx +24 VQ 0 VQ Q1 Q2 Q3 Q4 Q7 Q8 Q5 Q6 F 10 A 0VH R f 2.5 A + 24 V H (20.4 – 28.8 V H) 24 V H 0.5 A 0.5 A 5 W/24 V 1760-IB12XOB8 S1 S2 S3 S4 S5 S6 S7 S8 +24V dc COM 10A 0V R 24V 0.5A 0.5A 5W/24V Publication 1760-UM001D-EN-P - September 2005 ≤ 2.5A + 24V dc (20.4-28.
Installation 2-25 Parallel Connection Up to four outputs can be connected in parallel in order to increase the load current. The output current will increase to a maximum of 2A. ATTENTION Outputs may only be connected in parallel within a group (S1 to S4) or (S5 to S8) such as (S1 and S3) or (S5, S7 and S8). Outputs connected in parallel must be switched ON and OFF at the same time.
2-26 Installation Short Circuit and Overload Behavior If a short circuit or overload occurs on a transistor output, this output will switch off. The output will switch on up to maximum temperature after the cooling time has elapsed. This time depends on the ambient temperature and the current involved. If the fault condition persists, the output will continue to switch off and on until the fault is corrected or until the power supply is switched off.
Chapter 3 Commission the Pico Power On Unit Before powering up Pico, check that you have connected the power supply terminals and inputs correctly.
3-2 Commission the Pico Set the Menu Language When you power-up Pico for the first time, you are asked to select the menu language. Use the up and down cursor buttons to select a language. Definitions of the language abbreviations are shown below.
Commission the Pico Modes of Operation 3-3 Pico has two operating modes: Run and Stop. In Run mode, the unit continuously processes a stored program or circuit diagram until you select Stop or disconnect the power. The circuit diagram, parameters, and settings are retained in the event of a power failure. If the back-up time has elapsed after a power failure, you will need to reset the real-time clock. Circuit diagram entry is only possible in Stop mode.
3-4 Commission the Pico Create a Circuit Diagram (Program) The following small circuit diagram example takes you step-by-step through programming your first Pico circuit diagram. This example demonstrates most of the basic programming rules. As with conventional wiring, you use contacts and relays in the Pico circuit diagram. With Pico, however, you no longer have to connect components individually. With the push of a few buttons, the Pico circuit diagram produces all the wiring.
Commission the Pico 3-5 Start Point: Status Display When you power up the unit, it opens the status display immediately to show the state of the inputs and outputs. It also indicates whether Pico is already running a program. .............. I MO 02:00 ......... STOP Press Ok to switch to the main menu. If there is an expansion module installed, the expansion module status screen is displayed. Press Ok again to switch to the main menu.
3-6 Commission the Pico From the First Contact to the Output Coil With Pico, you work from the input to the output. I1 1. The first input contact is I1. Press Ok. Pico inserts the first contact I1 at the cursor position. The ’I’ flashes and can be changed, for example, to a ’P’ for a button input using the up or down cursor buttons. However, nothing needs to be changed at this point. 2. Press Ok twice to move the cursor across the 1 to the next contact field.
Commission the Pico 3-7 Wire Inside of Your Program Pico displays a small arrow when creating a circuit connection. Pressing Alt activates the arrow and the cursor buttons to move it. Alt also has two other functions: • From the left contact field, press Alt to insert a new, empty circuit connection (rung). • Press Alt to set the contact currently under the cursor to either a make or break contact. The wiring arrow works between contacts and relays.
3-8 Commission the Pico Test the Circuit Diagram PROGRAM... STOPå RUN PARAMETER 1. Switch to the main menu and select the RUN menu option (press Esc to go back to the Main Menu and use the arrow keys to highlight RUN). INFO... 2. Toggle between RUN and STOP to set the operating mode required (use the Ok button to toggle between RUN and STOP). Pico is in Run mode if the STOP menu option is displayed. Menu options that toggle between two functions always show the next possible setting.
Commission the Pico 3-9 3. Press Esc to return to the Main Menu. A circuit diagram does not have to be completed before you can test parts of it with Pico. Pico simply ignores any incomplete wiring that is not yet working and only uses the finished wiring. Delete a Circuit Diagram 1. Switch Pico to Stop mode. The RUN option is displayed. Pico must be in Stop mode in order to extend, delete or modify the program. 2. Select ’PROGRAM’. Press Ok to switch from the main menu to the next menu level. 3.
3-10 Commission the Pico Publication 1760-UM001D-EN-P - September 2005
Chapter 4 Draw a Circuit Diagram with Pico By working through the example, Create a Circuit Diagram (Program) on page 3-4, you should have gained an initial impression on how to create a program in Pico. This chapter describes the full range of Pico functions and provides further examples of how to use Pico. Pico Operation Buttons for Drawing Circuit Diagrams Press To Delete branch, contact, relay, or empty rung in the circuit diagram. Del • Toggle between break and make contact.
4-2 Draw a Circuit Diagram with Pico Up/Down Arrows • Change value. • Move cursor up and down. Left/Right Arrows • Change between parameters. • Move cursor left and right. Cursor Button Set to P-Button Function (if enabled) • Left Arrow = Input P1 • Right Arrow = Input P3 • Up Arrow = Input P2 • Down Arrow = Input P4 • Undo settings from previous Ok • Exit current display Esc • Change or add a contact/relay. • Save the setting.
Draw a Circuit Diagram with Pico 4-3 Button Operation The cursor buttons in the Pico circuit diagram perform three functions. The current mode is indicated by the appearance of the flashing cursor: • Move • Enter • Connect In Move mode, you can use the arrow keys to move the cursor around the circuit diagram in order to select a branch, contact or relay coil. I1 Use Ok to switch to Enter mode so that you can enter or change a value at the current cursor position.
4-4 Draw a Circuit Diagram with Pico Contacts Contacts are used to modify the flow of current in the circuit diagram. Contacts in the circuit diagram are either make or break contacts. Make contacts are open when off (de-energized) and closed when on. Break contacts are closed when off and open when on.
Draw a Circuit Diagram with Pico Contact Type Make Contact Break Contact 1760-L12xxx 1760-L18xxx 1760-L20xxx Operating Hours Counter O O O1 to O4 O1 to O4 Year Time Switch Y Y Y1 to Y8 Y1 to Y8 Master Reset Z Z Z1 to Z3 Z1 to Z3 4-5 (1) Not available on “-NC” models. (2) This applies only to the 1760-LxxBWB-xx and 1760-L12DWD. (3) This applies only to 1760-L18xxx-EX models.
4-6 Draw a Circuit Diagram with Pico The switching behavior of these relays is set using coil functions and parameters. The coil functions and parameters are listed with the description of each function relay type. The options for setting output and marker relays are listed with the description of each coil function. Circuit Diagram Display In the circuit diagram, contacts and coils are connected from left to right - from contact to coil.
Draw a Circuit Diagram with Pico 4-7 Save and Load Circuit Diagrams There are two ways of saving circuit diagrams in Pico: • Save to a memory module. • Save to a PC running PicoSoft programming software. Once they are saved, programs can be reloaded into Pico, edited, and run. All circuit diagram data is saved in Pico. In the event of a power failure, the data is retained until the next time it is overwritten or deleted.
4-8 Draw a Circuit Diagram with Pico Work with Contacts and Relays In Pico circuit diagrams, the switches, buttons, and relays of conventional relay logic are connected using input contacts and relay coils. S1 CR1 S2 Connect S1 to Pico input terminal I2 Connect S2 to Pico input terminal I3 Connect load M1 to Pico output Q4 S1 or S2 switches on M1. I2----------{Q4 I3 M1 CR1 Pico Circuit Diagram First, specify which input and output terminals you wish to use in your circuit.
Draw a Circuit Diagram with Pico 4-9 . Change I1 to I2 in the Change {Q1 to {Q8 in the coil contact field field I1 Q M or OK C T P D S : R I1 2 3 4 5 . . . 16 {Q1 I2 S R {Q1 {Q1 2 M 3 T or . C OK . D . S : 8 or OK {Q8 or OK Pico leaves the Enter mode when you press the left or right arrow keys or Ok. Deleting Contacts and Relay Coils 1. Move the cursor using the arrow buttons to a contact or coil field. 2. Press Del. The contact or the relay coil is deleted, together with any connections.
4-10 Draw a Circuit Diagram with Pico Create and Modify Connections Relay contacts and relay coils are connected in Connect mode using the diagonal wiring arrow (available in this mode). Use the arrow buttons to move the cursor onto the contact field or coil field from which you wish to create a connection. Do not position the cursor on the first contact field. At this position, the Alt button has a different function (Insert circuit connection). 1. Press Alt to switch to Connect mode. 2.
Draw a Circuit Diagram with Pico 4-11 Delete Connections 1. Move the cursor onto the contact field or coil field to the right of the connection that you want to delete. Press Alt to switch to Connect mode. 2. Press Del. Pico will delete a connection. Closed connections that are adjacent are retained. If several circuit connections are connected to one another, Pico first deletes the vertical connection. If you press Del again, it deletes the horizontal connection as well.
4-12 Draw a Circuit Diagram with Pico Delete a Circuit Connection Pico only removes empty circuit connections, i.e. those without contacts or coils. 1. Delete all the contacts and relay coils from the circuit connection. 2. Position the cursor on the first contact field of the empty circuit connection. 3. Press Del. The subsequent circuit connection(s) is ’pulled up’ and any existing links between circuit connections are retained.
Draw a Circuit Diagram with Pico .............. I P2 MO 02:00 4-13 The Status menu display shows whether the P-Buttons are used in the circuit diagram. ..........STOP Display Function P Button function active P2 Button function active and P2 button pressed P- Button function not active Empty box: P buttons not used. Check the Circuit Diagram I2---------{Q4 I3--- Pico allows you to monitor the switching states of contacts and relay coils during operation. 1.
4-14 Draw a Circuit Diagram with Pico Coil Functions You can set the coil function to determine the switching behavior of relay coils. The following coil functions are available for relays Q, M, S, D and ’:’.
Draw a Circuit Diagram with Pico 4-15 Rules for Wiring Relay Coils Use the output energize or ’flip-flop’ function once only for each relay coil. Use the ’latch’ and ’unlatch’ functions to control each relay coil - the first to set it (S) and the second to reset it (R). Relays with Output Energize Function The output signal follows immediately after the input signal, and the relay acts as a contactor.
4-16 Draw a Circuit Diagram with Pico Relays with Output Energize Negate Function The output signal is the opposite of the input signal; the relay operates like a contactor with contacts that have been negated. If the coil is energized when ON, the coil switches its make contacts to the OFF state.
Draw a Circuit Diagram with Pico 4-17 Relays with Raising Edge Function This function is used if the coil is only meant to switch on a rising edge. WIth a change in the coil state from open to closed, the coil switches its make contacts to the closed state for one cycle. Signal Diagram: on Input on Output Instruction Type Representation in Pico Marker Relay M, N ÈM1…ÈM16, ÈN1…ÈN16 Jumps È:1…È:8 (1760-L18xxx) Physical outputs should not be used when a cycle pulse is generated.
4-18 Draw a Circuit Diagram with Pico Instruction Type Representation in Pico Output Relay Q Q1… Q8 (depending on type) Marker Relay M M1… M16 Text Display Relay D D1… D8 (1760-L18xxx) Expansion or Marker Relay S1… S8 (1760-L18xxx) A coil automatically turns off if the power fails or if Pico is in Stop mode. Exception: Retentive coils retain signal 1 (see Chapter 7). Latching Relay The ’latch’ and ’unlatch’ relay functions are used in pairs.
Draw a Circuit Diagram with Pico I1-I2-------SQ1 ... ... I2----------RQ1 Use relay functions ’S’ and ’R’ only once per relay. If both coils are triggered at the same time, priority is given to the coil further down in the circuit diagram. This is shown in the preceding signal diagram in section ’B’. IMPORTANT Function Relay Types 4-19 A latched relay is automatically switched off if the power fails or if the device is in Stop mode.
4-20 Draw a Circuit Diagram with Pico In timing and counter relays, it is also possible to change the switching behavior via the coil function. ATTENTION In Run mode, Pico processes the function relays after a pass through the circuit diagram. The last state of the coils is used for this. Only use the coil of a function relay once. Exception: The same coil can be used several times when working with jumps.
Draw a Circuit Diagram with Pico Example with Timing and Counter Relays 4-21 A warning light flashes when the counter reaches 10. Hard-Wire with Relays CNTR1 Count S1 S2 Reset T1 CNTR1 2.
4-22 Draw a Circuit Diagram with Pico Use Circuit Diagram Forms You can use the circuit diagram form on page B-1 of this manual for planning and preparing your Pico circuit diagrams. An example form is shown below and on the next page. Customer: Date: J. Smith Ltd.
Draw a Circuit Diagram with Pico J. Smith Ltd.
4-24 Draw a Circuit Diagram with Pico I5----------CC1 1. Enter the circuit diagram up to CC1. CC1 is the contact of counter relay 1. If the cursor is on the contact number, Pico will call up the parameter display when you press Ok. 2. Move the cursor onto the 1 in CC1 and press Ok. C1 N S + The parameter set for the counter is displayed. +0 3. Move the cursor onto the plus sign to the right of the S (setpoint) and press Ok. C1 N S + 4.
Draw a Circuit Diagram with Pico I5----------CC1 I6----------RC1 C1----------TT1 T1----------{Q1 4-25 13. Complete the circuit diagram. 14. Press Ok to store the circuit diagram. Test Circuit Using Power Flow Display 1. Switch Pico to Run mode and return to the circuit diagram. Each parameter set can be displayed using the power flow display for the circuit diagram. 2. Move the cursor onto C1 and press Ok. C1 N S + 0010 The parameter set for the counter is displayed with actual and setpoint values.
4-26 Draw a Circuit Diagram with Pico Timing Relays Pico provides sixteen different timing relays, T1 to T16. A timing relay is used to change the switching duration and the make and break times of a relay contact. The possible delay times range between 2 ms and 100 hours. You can use positive values, values of analog inputs, and actual values of counter relays and timing relays.
Draw a Circuit Diagram with Pico 4-27 Parameter Display and Parameter Set for a Timing Relay T1 X I1 I2 S + 00.000 00.
4-28 Draw a Circuit Diagram with Pico Programming a Timing Relay A timing relay is integrated into your circuit in the form of a contact. The function of the relay is defined via the parameter display. The relay is started via the trigger input TRG and can be reset via the reset Task: input RES. A timer also resets when it is turned off. To prevent Turn on output Q1 1.5 min. unpredictable switching states, use each coil of a relay only once in after actuation via I1. the circuit diagram.
Draw a Circuit Diagram with Pico 4-29 Switch Function Description Parameters Switch with on-delay X ?X Switch with on-delay and random time range Switch with off-delay Switch with off-delay and random time range Switch with single-pulse Switch with flashing X Typically, delay times are >40 ms for the 1760-L12xxx and >80 ms for the 1760-L18xxx. This is because a time value less than the maximum scan time of the Pico controllers may cause uncontrolled switching states.
4-30 Draw a Circuit Diagram with Pico The trigger input starts the time (t). If the trigger input is disabled after the time has elapsed, timer is reset and the output is turned off (A). If the trigger coil drops out before the time has elapsed, the contact is not turned on (B). The reset coil has priority over the trigger coil and always resets the timer and turns the output off (C). If the preset is set to zero, the output follows immediately after the trigger signal.
Draw a Circuit Diagram with Pico 4-31 Timing Relays, Single Pulse The relay switches a contact for a time equal to the delay time set, regardless of the length of the trigger signal. Signal Diagram: On Trigger On Reset On Output t t The reset coil has priority over the trigger coil and resets the relay contact before the time has elapsed. If the time is set to zero, the contact is set for the duration of one program scan. The cycle time varies according to the length of the circuit diagram.
4-32 Draw a Circuit Diagram with Pico Signal Diagram: Trigger On On Reset On Output t t t The trigger coil enables the flashing on and off. The flashing period starts with switch position ‘off’. The reset coil has priority over the trigger coil and always resets the relay contact. If the time is set to zero, the flash frequency changes with the cycle time. The cycle time varies according to the length of the circuit diagram. A typical application is activating warning lamps.
Draw a Circuit Diagram with Pico 4-33 Signal Diagram: Count On CCx On Direction DCx A Reset RCx 8 6 4 2 0 Output B C D On 7 5 3 1 On The relay contact of a counter with setpoint value 6 switches when the actual value is 6 (A). If the counting direction is reversed (B), the contact switches off when the actual value is 5. Without a counting pulse, the actual value is retained (C). The reset coil resets the counter to 0 (D).
4-34 Draw a Circuit Diagram with Pico I1---------CC1 I3---------DC1 I2---------RC1 C 1 --------{Q1 You can wire up coils RC1 and DC1 as required. Select relay contact C1, move the cursor to 1 and press Ok. The parameter set for counter relay C1 is displayed. Determine Counter Frequency { { 0005 DIR CNT C1 RES + The maximum counter frequency depends on the length of the circuit diagram in Pico.
Draw a Circuit Diagram with Pico 4-35 Parameters for Counters The parameter display for counters is used to change the counter setpoint value and to enable or disable parameter access. C2 N S + 00.000 C2 Counter function relay number 2 • Mode N: up/down counter N • Mode H: high-speed up/down counter • Mode F: frequency counter • + appears in the Parameter menu + • - does not appear in the Parameter menu.
4-36 Draw a Circuit Diagram with Pico 00000 is reached, this value is retained until the count direction is changed. Compatibility between Pico Series A Controllers and Pico Series B Controllers { { { High Speed Counters 0230 0000 DIR CNT C1 RES + AAAA C1 + = = = S AAAAA C1 + C1 N S + AAAAA Pico provides various high-speed counter functions. These counter function blocks are coupled directly to digital inputs.
Draw a Circuit Diagram with Pico IMPORTANT 4-37 Frequency counters operate independently of the program cycle time. The result of the actual value setpoint comparison is only transferred once every program cycle for processing in the circuit diagram. The reaction time in relation to the setpoint/actual value comparison can therefore be up to one cycle. Measurement Method The pulses on the input are counted for one second regardless of the cycle time, and the frequency is determined.
4-38 Draw a Circuit Diagram with Pico IMPORTANT The frequency counter can also be enabled specifically for a special operating state. This has the advantage that the cycle time of the device is only burdened with the frequency measurement when it is taking place. If the frequency counter is not enabled, the cycle time of the device is shorter.
Draw a Circuit Diagram with Pico 4-39 Function of the Frequency Counter 1: Counter input I3 or I4. 2: Upper Setpoint. 3: Enable coil CC... 4: Reset coil RC... 5: Contact (make contact) C... upper setpoint value reached. tg: Gate time for the frequency measurement. 1 2 • Range A: The counter is enabled. Contact C15 (C16) switches after a frequency above the setpoint was measured for the first time. • Range B: If the actual value falls below the setpoint, the contact is reset.
4-40 Draw a Circuit Diagram with Pico IMPORTANT High-speed counters operate independently of the program cycle time. The results of the actual value setpoint comparison is only transferred once every program cycle for processing in the circuit diagram. The reaction time in relation to the setpoint/actual value comparison can therefore be up to one cycle in length. Wire a High-Speed Counter The following assignment of the digital inputs apply. • I1: High-speed counter input for counter C13.
Draw a Circuit Diagram with Pico 4-41 Parameter Display and Parameter Set for the High-Speed Counter C13 H S 00950 + C13 Counter function relay number 13. H H - High-speed counter mode. • + appears in the Parameter menu. + • - does not appear in the Parameter menu. S Setpoint, constant from 00000 to 32000. In the parameter display of a counter relay you change the mode, the setpoint and the enable of the parameter display. Value Range The counter relay is in Run mode.
4-42 Draw a Circuit Diagram with Pico When Pico is restarted in Run mode, the counter relay continues with the retentively stored actual value. 1: Count pulses at counter input I1 (I2) 2: Setpoint of the counter. 3: Actual value of the counter. 4: Enable of the counter, CC13 (CC14). 5: Count direction, direction coil DC13 (DC14). 6: Reset coil of the counter RC13 (RC14). 7: Contact of the counter, C13 (C14). 1 ......... ......... .........
Draw a Circuit Diagram with Pico 4-43 Compatibility between Pico Series A Controllers and Pico Series B Controllers AA-BB --:-ON OFF --:-- Ö1 A + Ö1 AA-BB A ON--:-OFF--:-+ = = = = = = Ö1 AA-BB A ON--:-OFF--:-+ 1 A D ON + AA-BB --:-- OFF --:-- Parameters for Time Switch A time switch has four sets of parameters, one for each channel (A, B, C and D). These are used to set the day of the week and the turn-on and turn-off times for the desired channels and to enable or disable parameter access.
4-44 Draw a Circuit Diagram with Pico Parameter Set Displayed via the PARAMETER Menu Option + Access enabled Access disabled Example 1 Time switch 1 turns on Monday through Friday between 6:30 am and 9:00 am and between 5:00 pm and 10:30 pm. 1 A D MO-FR ON 06:30 OFF 09:00 + 1 B D MO-FR ON 17:00 OFF 22:30 + Signal Diagram: MO TU WE TH FR SA SU A on B on on Output Example 2 Time switch 2 turns on at 4:00 pm on Friday and switches off at 6:00 am on Monday.
Draw a Circuit Diagram with Pico 4-45 Example 3 Time switch 3 turns on overnight at 10:00 pm on Monday and switches off at 6:00 am on Tuesday. + 3 D D MO ON 22:00 OFF 06:00 Signal Diagram: MO TU D on on Output If the Off time is before the On time, Pico will switch off on the following day. IMPORTANT Example 4 The time settings of a time switch can overlap. The clock turns on at 4:00 pm on Monday, whereas on Tuesday and Wednesday it turns on at 10:00 am.
4-46 Draw a Circuit Diagram with Pico Example 5 The power to Pico is removed between 3:00 pm and 5:00 pm. The relay drops out and remains off, even after the power returns, since the first switch-off time was at 4:00 pm. 4 A D MO-SU ON 12:00 OFF 16:00 + + 4 B D MO-SU ON 12:00 OFF 18:00 When it is powered on, Pico always updates the switching state on the basis of all the available switching time settings. Example 6 The time switch is to operate for 24 hours.
Draw a Circuit Diagram with Pico Analog Comparators 4-47 Analog comparators are only available with 12V dc and 24V dc models. An analog value comparator or threshold value switch enables you to compare analog input values with a setpoint, the actual value of another function relay or another analog input. This enables you to implement small controller tasks such as two point controllers very easily. • The analog inputs of the 1760-L12 are I7 and I8.
4-48 Draw a Circuit Diagram with Pico A1 I1 F1 I2 F2 OS HY EQ +0 +0 +0 +0 +0 +0 Parameter Display Parameter Description A1 Analog value comparator function relay 1. EQ Equal mode. The function rerlay has the following modes: • LT - less than • LE - less than/equal to • EQ - equal to • GE - greater than/equal to • GT - greater than + + appears in the Parameter menu. - does not appear in the Parameter menu.
Draw a Circuit Diagram with Pico 4-49 The parameter settings are: A1 I1 F1 I2 F2 OS HY LE +7.1 +0 +0 +0 +0 +0.4 A2 I1 F1 I2 F2 OS HY GE +7.1 +0 +7.5 +0 +0 +0.4 Timing Diagram: [V] 10 7,5 7,1 5 A BC D I7 A1 A2 A1 on Output A1 sets relay output Q1 (A) up to a voltage of 7.1V. The hysteresis (B) is between 7.1V and 7.5V. At 7.5V, A2 causes the relay to reset (C). Q1 drops out and does not pick up again until A1 is set at 7.1V (D).
4-50 Draw a Circuit Diagram with Pico 2. Press Ok to switch to the parameter display. The parameter set for the first comparator is displayed. 3. Use the left and right arrows to move the cursor to the field greater than or equal to. Use the up and down arrows to select one of the comparator relays.
Draw a Circuit Diagram with Pico 4-51 Example Pico text display can be very useful!! Circuit Diagram Elements Text Display Contacts Make Contact D Break Contact D Numbers 1 to 8 Coils D Numbers 1 to 8 Coil functions {, S, R LCD Display The LCD display can show up to 12 characters per line and up to 4 lines.
4-52 Draw a Circuit Diagram with Pico When activating several text displays, they are displayed automatically every 4 s in succession. This process is repeated until: • • • • • none of the display relays are set to 1 stop mode is selected the Pico power is turned off the Ok or Del + Alt buttons are used to switch to a menu, or the text for D1 is displayed The following applies to D1: D1 is designed as an alarm text and takes precedence over all other text displays.
Draw a Circuit Diagram with Pico Jumps 4-53 The 1760-L18xxx allows the use of jumps. Jumps can be used to optimize the structure of a program or to implement the function of a selector switch. For example, jumps can be used to select whether manual/automatic operation or other machine programs are to be set. Jumps consist of a jump location and a jump destination (label).
4-54 Draw a Circuit Diagram with Pico Power Flow Display Jumped ranges are indicated by the coils in the power flow display. All coils after the jump coil are shown with the symbol of the jump coil. EXAMPLE A selector switch allows two different sequences to be set. • Sequence 1: Switch on Motor 1 immediately. • Sequence 2: Switch on Guard 2, Wait time, then switch on Motor 1.
Draw a Circuit Diagram with Pico Example Programs 4-55 The Pico circuit diagram is created using ladder logic. This section contains a few programs intended to demonstrate possibilities for your own circuit diagrams.
4-56 Draw a Circuit Diagram with Pico Series Connection I1-I2-I3-{Q1 I1-I2-I3-{Q2 Q1 is controlled by a series circuit consisting of three make contacts (AND circuit). Q2 is controlled by a series circuit consisting of three break contacts. In the Pico circuit diagram, you can connect up to three make or break contacts in series within a circuit connection. Use ‘M’ marker relays if you need to connect more than three make contacts in series.
Draw a Circuit Diagram with Pico 4-57 Logic Table I1 I2 I3 Q1 Q2 1 0 1 1 1 0 1 1 1 1 1 1 1 1 0 Exclusive OR Circuit This circuit is made in Pico using two series connections that are combined to form a parallel connection (XOR). XOR means that this circuit is an ‘Exclusive OR circuit’. Only if one contact switches, can the coil be energized.
4-58 Draw a Circuit Diagram with Pico Latching circuits are used to switch machines on and off. The machine is turned on when the normally open push button connected to input terminal I1 is activated. The machine is turned off when the normally closed push button connected to I2 is activated. L1 STOP (S2) START (S1) I1 I2 Q1 M L2 S2 opens the connection to the control voltage in order to turn off the machine. This ensures that the machine will be turned off, even in the event of a wire break.
Draw a Circuit Diagram with Pico 4-59 Logic Table I1---------- Q1 I1---------TT1 I1 State Q1 Q1 0 0 0 0 to 1 0 1 0 1 1 0 to 1 1 0 On-Delay Timing Relay T1---------{Q1 The on-delay can be used to gate short pulses or to initiate another movement after a time delay when a machine is started. X The parameter settings for T1 are: S 10.
4-60 Draw a Circuit Diagram with Pico 4x Shift Register You can use a shift register for storing an item of information, e.g. sorting parts into good and bad; two, three, or four transport steps further on. A shift pulse and the value (0 or 1) to be shifted are needed for the shift register. The shift register's Reset input is used to clear any values that are no longer needed. The values in the shift register pass through the register in the following order. 1st, 2nd, 3rd, 4th storage position.
Draw a Circuit Diagram with Pico Item Function M2 Second storage position M3 Third storage position M4 Fourth storage position M7 Marker relay for one-shot pulse M8 One-shot pulse used for shift pulse 4-61 I1-M7-------{M8 Generate shift pulse ---------{M7 M8-M3-------SM4 Set 4th storage position M3-------RM4 Clear 4th storage position M2-------SM3 Set 3rd storage position M2-------RM3 Clear 3rd storage position M1-------SM2 Set 2nd storage position M1-------RM2 Clear 2nd storage position I2---
4-62 Draw a Circuit Diagram with Pico If the relay coils were activated, Pico transfers the result to the contacts. M8 is now open once more. No new pulse can be generated until I1 is opened, since M7 is open for as long as I1 is closed. This is known as a ‘One-shot’ pulse. How does the value reach the shift register? When shift pulse M8 = ‘on’, the state of I2 (value) is transferred to storage position M1. If I2 is switched on, M1 is set. If I2 is switched off, M1 is cleared via break contact I2.
Draw a Circuit Diagram with Pico 4-63 On the first pass, the value is switched on once by break contact M9. If Q1 is set, M9 is switched on. Each output is turned on and off in sequential order (i.e. Q1, Q2, Q3, Q4). Pico changes state every second. Once Q4 (the last storage position) has been switched on, the value is passed back to Q1.
4-64 Draw a Circuit Diagram with Pico Activation Effect on Lighting Button pressed briefly Light ON or OFF. Lights turn off automatically after 6 minutes. Button pressed for more than 2 seconds Continuous lighting Definition of the contacts and relays used: Item Function I1 Button ON/OFF Q1 Output Relay for light ON/OFF M1 Marker relay. This is used to block the ‘switch off automatically after 6 minutes’ function for continuous lighting. T2 Scan to determine how long the button was pressed.
Chapter 5 Save and Load Circuit Diagrams Interface to Memory Module and Programming Cable The Pico controller has a covered interface. You can either use the Pico interface to save programs to a memory module or use PicoSoft programming software and the interface cable to transfer them to a PC. A Pico controller without a display (1760-L1xxxx-ND) can be loaded with a program via PicoSoft or automatically from a memory module every time power is applied.
5-2 Save and Load Circuit Diagrams Memory Module The following memory modules are available as Pico accessories. Pico Controller Memory Module 1760-L12xxx 1760-MM1 (Series A only) 1760-L18xxx 1760-MM2 (Series A only) Series B Pico Controllers 1760-MM2B Programs, including all relevant data, can be transferred from the 1760-MM2B memory module to the Series B Pico Controllers. The existing 1760-MM1 and 1760-MM2 memory modules are Read-Only when used with Series B Pico Controllers.
Save and Load Circuit Diagrams IMPORTANT 5-3 You can insert and remove the memory module even if power to Pico is on, without the risk of losing data. Load or Store Programs You can only transfer programs in Stop mode. TIP The no-display model, 1760-L1xxxx-ND, can be loaded with a program automatically from the memory module every time it is powered up. Simply insert a memory module into the interface of a 1760-L1xxxx-ND and apply power to the controller.
5-4 Save and Load Circuit Diagrams Store a Circuit Diagram to the Memory Module 1. Select DEVICE-> CARD. 2. Confirm the prompt by pressing Ok. This deletes the contents of the memory module and replaces it with the program in Pico. REPLACE ? 3. Press Esc to cancel. Load a Circuit Diagram from the Memory Module 1. Select the CARD-> DEVICE menu option. > CARD > DEVICE DEVICE - 2. Press Ok if you want to delete the Pico program and replace it with the memory module program. CARD - DELETE CARD 3.
Save and Load Circuit Diagrams PicoSoft 5-5 PicoSoft and PicoSoft Pro are PC programs for creating, testing and managing Pico programs. You should only transfer data between the PC and Pico using the special PC interface cable, 1760-CBL-PM02, which is available as an optional accessory. TIP PicoSoft software is available at no charge from www.ab.com/pico. PicoSoft Pro software is a purchasable product for use with both Pico and Pico GFX controllers.
5-6 Save and Load Circuit Diagrams Connect the Pico to the PC ATTENTION ELECTRICAL SHOCK HAZARD Only use the 1760-CBL-PM02 cable with the Pico units. Use of another cable may place the user in danger of electrical shock. 1. Connect the PC cable to the serial PC interface. Esc 2. Insert the Pico plug in the open interface. 3. Activate the status display on the Pico. Ok 1760-CBL-PM02 Pico cannot exchange data with the PC while in any other display mode.
Save and Load Circuit Diagrams 5-7 If You Have Trouble PicoSoft (catalog number 1760-PICOSOFT) provides extensive help on how to use the software. To access the help, start PicoSoft and click on Help. The on-line help provides all the additional information about PicoSoft that you will need. If a problem occurs during transmission, Pico displays the message INVALID PROG.
5-8 Save and Load Circuit Diagrams Publication 1760-UM001D-EN-P - September 2005
Chapter 6 Pico System Settings You can modify system settings on Pico models equipped with keypad and an LCD display, or by using PicoSoft (v2.1 and higher). Password Protection The Pico circuit diagram, function relay settings, and system parameters can be password protected. In this case, the password consists of a value between 0001 and 9999. The number combination 0000 is used to delete a password.
6-2 Pico System Settings IMPORTANT A password that was entered in Pico is transferred to the memory module together with the circuit diagram, whether it was activated or not. If this Pico circuit diagram is loaded from the memory module, the password is also transferred to Pico and is activated immediately. Set the Password Passwords can be set in the System menu in both Run or Stop operating modes. If, however, a password is already activated, you cannot change to the System menu. 1.
Pico System Settings 6-3 Select the Scope of the Password 1. Press Ok. CIRC. DIAG. PARAMETER CLOCK OPRTNG MODE INTERFACE DELETE FUNCT 2. Select the function or menu to be protected. 3. Press Ok in order to protect the function or menu. A check mark appears next to the protected item. Standard protection encompasses the programs and circuit diagram. At least one function or menu must be protected.
6-4 Pico System Settings IMPORTANT ATTENTION Make a note of the password before you activate it. If the password entry is no longer known, Pico can still be unlocked. However, the circuit diagram and other settings are deleted. If the password is unknown or lost, and the password delete function is not activated, the unit can only be reset to the factory setting by the manufacturer. The programs and all data are lost. 3. Select ’ACTIVATE’ and press Ok. The password is now active.
Pico System Settings PROGRAM ... STOP PARAMETER SET CLOCK .. 6-5 If the password is correct, Pico switches automatically to the Status display. The ’PROGRAM...’ menu item is now accessible so that you can edit your circuit diagram. The System menu is also now accessible. Change or Delete a Password 1. Press Del and Alt to call up the System menu. 2. Open the password menu by selecting Security and then Password from the System menu. CHANGE PW ACTIVATE 3. The CHANGE PW entry flashes.
6-6 Pico System Settings Pico returns to the Status display. Pressing Esc retains the circuit diagram and data. You can then make another four attempts to enter the password. Change the Menu Language Pico Series B Controllers provide twelve menu languages. These can be set as required via the System menu.
Pico System Settings Change Parameters 6-7 Pico allows you to change function relay parameters such as timer and counter setpoints without having to call up the circuit diagram. This is possible regardless of whether Pico is running a program or is in Stop mode. 1. Press Ok to switch to the main menu. 2. Start the parameter display by selecting PARAMETER. T3 T8 X C4 N S + M:S + + O3 Ö2 + + A1 EQ + A3 LT + A complete parameter set is shown.
6-8 Pico System Settings Variable Parameters for Function Relays You can modify the relay parameters used in the circuit diagram in three different ways: • All circuit diagram parameters can be adjusted in Stop mode via the circuit diagram. • Setpoints can be modified in Run mode via the circuit diagram. • Setpoints can be modified via the PARAMETER menu.
Pico System Settings 1 B 15:21 D SA ON OFF 00:00 00:00 1 B 15:21 D SA ON OFF 19:00 00:00 + + 6-9 4. Change the value for the day interval from MO to SA: • Left and right arrows move between the parameters • Up and down arrows change value. • Press Ok to save. 5. Set the switching on time to 19:00. 6. Set the switching off time to 22:00. 7. Press Ok. 1 B 15:21 D SA ON OFF 19:00 22:00 + Pico saves the new parameters. The cursor remains in the contact field on channel identifier ’B’. 8.
6-10 Pico System Settings Change Between Winter/Summer Time (Daylight Saving Time) The clock can be toggled between winter and summer time (daylight savings time) using the cursor buttons. 1. Select SET CLOCK from the main menu. This opens the menu for setting the time. SET CLOCK 2. Select menu item WINTER TIME or SUMMER TIME as required. WINTER TIME Change to Winter Time Pico displays SUMMER TIME as the next possible option if winter time is already set. Otherwise select WINTER TIME and press Ok.
Pico System Settings 6-11 Deactivate Debounce (Input Delay) If Pico is showing DEBOUNCE in the display, this means the Debounce mode is deactivated. Otherwise, select DEBOUNCE and press Ok. If Debounce mode is deactivated, the display shows DEBOUNCE with no check mark. Activate Debounce (Input Delay) If there is a check mark next to DEBOUNCE, the Debounce function has been activated. If there is no check mark, select DEBOUNCE and press Ok. Press Esc to return to the status display.
6-12 Pico System Settings 2. Press Esc to return to the status display. The P-Buttons are only active in the Status display. In this display, you can use the P-Buttons to activate inputs in your circuit diagram. Deactivate the P-Buttons Select P BUTTONS and press Ok. The check mark is removed. The P-Buttons are now deactivated. The P-Buttons are automatically deactivated when deleting a circuit diagram in Pico.
Pico System Settings 6-13 Deactivate RUN Mode DEBOUNCE P BUTTONS RUN MODE Select RUN MODEå from the menu and press Ok. The RUN MODE is deactivated. CARD MODE Start-Up Behavior Menu Displayed Status of Pico After Start-Up Pico begins in Stop mode RUN MODE Pico is in Stop mode Pico begins in Run mode RUN MODE å Pico is in Run mode Behavior When the Circuit Diagram is Deleted The setting for the start-up behavior is a Pico device function.
6-14 Pico System Settings Pico only starts in the Run Mode if a memory module with a valid program is inserted. If the program on the memory module is different than the program in Pico, the program from the card is loaded into the processor and the processor starts in the RUN mode. Switch to the System menu. If Pico is protected by a password, the System menu is not available until Pico is unlocked (see the section Unlock Pico on page 6-4).
Pico System Settings 6-15 4. Enter cycle time. Use left and right arrows to move between parameters. Use up and down arrows to change the value. CYCLE TIME 35 MS 5. Press Ok to save value. The minimum set cycle time is 35 ms. The range is between 00 ms and 60 ms. The cycle time can be lengthened if Pico requires more time to process the program. The entry of a set cycle time is only useful in applications involving two-step controllers or similar functions.
6-16 Pico System Settings The default setting of Pico is for no retentive actual value data to be selected. When Pico is in Stop mode or has been switched to a de-energized state, all actual values are cleared. RUN MODE CARD MODE CYCLE TIME RETENTION 2. Switch to Stop mode. 3. Switch to the System menu. 4. Proceed to the SYSTEM menu and continue to the RETENTION... menu. 5. Press the Ok button. The next screen display is the selection of the marker range.
Pico System Settings 6-17 Change the Operating Mode or the Circuit Diagram When the operating mode is changed or the circuit diagram is modified, the retentive data is normally saved together with the actual values. The actual values of relays no longer being used are also retained. Change the Operation Mode If you change from Run to Stop and then back to Run, the actual values of the retentive data are retained.
6-18 Pico System Settings The device enables the display of the following device information: • • • • • • • • AC or DC power supply. T (transformer output) or R (relay output). C (clock provided). A (analog output provided). LCD (display provided). Pico-Link (Pico-Link provided). OS: 1.10.204 (operating system version). CRC: 25825 (checksum of the operating system). 1. Switch to the main menu. IMPORTANT The device information is always available. The password does not prevent access. 2.
Chapter 7 Retention What is Retention? Some system and machine controllers for operating states or actual values require retentive settings. What this means is that values are retained even after power to a machine or system has been turned off and are retained until the actual value is overwritten. Pico Models with Data Retention Retentive values can be set with 1760-L12BWB-xx and 1760-L12DWD-xx (via the SYSTEM menu) as well as 1760-L18xxx for the following markers and function relays.
7-2 Retention Set Retention Requirement: Pico must be in Stop mode Switch to the System menu. If Pico is protected by a password, the System menu is not available until Pico is unlocked (see Unlock Pico on page 6-4). Enable the Retention function (see figure on previous page). The menu item RETENTION ON/OFF is a toggle menu. The menu always displays the operating mode into which you can change. The default setting of Pico is the display RETENTION ON.
Retention Transfer Retentive Behavior 7-3 The setting for retentive behavior is a circuit diagram setting; in other words, the setting of the retention menu may also under certain circumstances be transferred to the memory card or during uploading or downloading from the PC. Circuit Diagram Transfer (Behavior) 1760-L12BWB-xx, 1760-L12DWD-xx and 1760-L18xxx ➞ Memory Module When transfer is in this direction, the actual values are retained in Pico. The retention setting is transferred to the card.
7-4 Retention Change the Start-Up Behavior in the SYSTEM Menu The retentive actual values in Pico are retained irrespective of the MODE RUN or MODE STOP settings. Retentive Auxiliary Relays (Markers) How the Retention Works The retentive markers M13, M14, M15, M16, D1 to D8 should be used in conjunction with the following coil functions. Instruction Type Representation in Pico Set S M…, D… Impulse Relay Reset M…, D… R M…, D… .
Retention 7-5 Examples S/R Coil (Break Contact) Task: In your application you need to remember whether a screw was inserted or not. When your machine powers up, it is important that a screw that has already been screwed in place is not screwed in again otherwise there could be permanent damage to the workpiece.
7-6 Retention Impulse Relay Task: After a power failure, the lights in a stairwell should resume their previous state. Contacts and relays used: Coil Function T2 Enable after first cycle I1 Push-button Q1 Lamp output M15 Impulse relay (retentive) Circuit Diagram: Parameter Display: -----------TT2 I1-------- M15 M15-T2-----{Q1 X S 00.10 TRG { T2 RES + Signal diagram: U I1 M15 Q1 T2 t A t t B C U = Supply voltage Range A: Q1 was on prior to losing power.
Retention 7-7 S/R Function Task: After a power failure, the lights in a stairwell should resume their previous switching state. (This is another method to solve the same task.) Contacts and relays used: Coil Function T2 Enable after first cycle I1 Push-button M1 Push-button pulse (rising edge detection) M2 Pulse limitation (one shot) Q1 Lamp output M15 Impulse relay (retentive) -----------TT2 I1-M2------{M1 --------{M2 X S { M1-M15----SM15 00.
7-8 Retention The circuit above functions in the same way as an impulse relay switch. The make contact remains switched on in the first Pico cycle if: • a coil is actuated by the make contact of a retentive marker (series and parallel connection both apply here too), and • when the power is switched on, the reset condition for this retentive marker is on. The enable time, T2, prevents Q1 from flickering.
Retention 7-9 Examples On-Delayed, Switching On-Delayed with Random Range, Retentive Task 1 (On-Delayed): A motor must start up 30 seconds after an enable signal is given. This task is implemented using an input device which retains its '1' state on power-up. Contacts and relays used: Circuit Diagram: Coil Function I1 Motor Enable Q2 Motor T8 Delay time Parameter Display: I1---------TT8 T8------{Q2 X S { 30.
7-10 Retention Contacts and relays used: Circuit Diagram: Parameters Entered: I2---------TT6 Coil T6/T7 T6---------SQ1 M16 I3----------TT1 Function One shot timers X S { 30.00 TRG T8 RES + T1---------SM16 I2 Start conveyor belt Q1 Conveyor belt motor I3 Stop conveyor belt M16 Stop selected T8 Remaining time M16---------TT8 Time setting for T6, T7 T8----------RQ1 RM16 I2 and I3 are converted to one-shot pulses by T6 / T7. Only the actuation of the push-button is recognized.
Retention 7-11 Off-Delayed, Off-Delayed Switching with Random Time Range, Retentive Task: No-load running of a conveyor belt.
7-12 Retention Single-Pulse Timing Relays, Retentive Single-pulse timing relays are suitable for metering adhesives, liquids etc. Task: A lubricating device is to always dispense the same quantity of oil. Contacts and relays used: Circuit Diagram: Parameters entered: I1---------TT8 Coil Function I1 Start lubrication Q1 Oil valve T8 Oil time T8---------{Q1 S { 30.
Retention 7-13 Flashing Switch Operation, Retentive Task: A flasher function is used to lower an ink stamp at identical time intervals to print an area and then to raise the stamp to prepare for the next hit. Contacts and relays used: Circuit Diagram: Parameters entered: -----------TT8 T8---------{Q1 Coil Function Q1 Valve T8 Time S { 10.00 TRG RES T8 + Signal diagram: U T8 Q1 t t1 A t2 t t1 + t 2 = t U = Supply voltage Range A: Within this range, the power is turned off.
7-14 Retention Retentive Up/Down Counters C7 and C8 How the Retention Works The actual values of counters C7 and C8 are retentive. When the condition for resetting the counter is satisfied, the actual value of the counter will be reset. Examples Counting Parts Task 1 Parts are packed automatically in a shipping carton. Even if there is a power outage, the correct number should still be packed into the carton. When the carton is full, the carton is removed manually and the counter is reset.
Retention 7-15 Operating Hours Counter for Maintenance Intervals Task 2 Every 1000 hours, the system or machine must undergo preventive maintenance. Filters and transmission oil must be changed and the bearings must be lubricated. Contacts and relays used: Circuit Diagram: Parameters entered: -----------TT8 T8-M16-----CC8 -------SM16 Coil Function T8 Clock pulse M16 Block double pulse Q4 Warning light, 1000 h reached C8 Up counter I1 Reset T8--------RM16 18:38 M:S { { 30.
7-16 Retention Signal diagram: U T8 M16 Q4 I1 A U = Supply voltage Range A: Value before power outage: 107 Value after switching back on: 107 Automatic Lubrication at Constant Intervals and With a Constant Quantity of Lubricant Task 3: After every 60 minutes of machine run time, the bearings of the machine must be lubricated for 30 seconds.
Retention Function of the Pico circuit diagram: T1 provides the clock pulse. When a time of t = 0.5 seconds is selected the counting period amounts to 2 x t = 1 s. One pulse is counted every second. The up counter C8 switches valve Q1 on via M15 at 3600 counting pulses (3600 s = 1 h). M15 resets C8 and prepares C8 for the next hour. To stop C8 from continuing to count while lubrication is in process, the break contact of M15 blocks the counting of pulses. 7-17 Parameters entered: Circuit Diagram:.
7-18 Retention Signal diagram: U T1 C8 M15 Q1 T8 t1 U = Supply voltage Publication 1760-UM001D-EN-P - September 2005 t2 t1 + t2 = 30s
Chapter 8 Inside Pico Circuit Diagram Cycle In conventional control systems, relay control processes all the circuit connections in parallel. The speed with which a relay switches is thus dependent on the components used, and ranges from 15 to 40 ms for relay pick-up and drop-out. With Pico, the circuit diagram is processed with a microprocessor that simulates the contacts and coils of the relay logic and thus processes all switching operations considerably faster.
8-2 Inside Pico Evaluation in the Circuit Diagram and High-Speed Counter Functions When using high-speed counter functions, the signal state is continuously counted or measured regardless of the processing of the circuit diagram. (C13, C14 high-speed up/down counters, C15, C16 frequency counters.) How Does This Affect Creation of the Circuit Diagram? Pico evaluates the circuit diagram in these five segments in order.
Inside Pico Determine Cycle Time of Circuit Diagrams 8-3 The maximum cycle time of a circuit diagram must be known in order to determine the maximum counter frequency or reaction time of Pico. Blank Cycle Time Calculation Tables can be found on page A-13 of this manual.
8-4 Inside Pico Example: Parallel Circuit I2----------{Q4 I3 Calculate the maximum cycle time for the following circuit diagram: Function Number Time Duration in µs Total Basic pulse 1 210 210 Refresh 1 3500 3500 Contacts and bridged contact fields 4 20 80 Coils 1 20 20 Total rungs from the first one to the last one, with empty ones in between 2 50 100 Connecting lines (only – 20 – Timing relays – – – Counters – – – Analog value function relays – – – , , ) Tota
Inside Pico Function Number Time Duration in µs Total Counters – – – Analog value function relays – – – Total 8-5 4270 Example: Operating Hours Counter -----------TT8 T8-M16-----CC8 -------SM16 T8--------RM16 C8---------{Q4 I1---------RC8 RT8 Function Number Time Duration in µs Total Basic pulse 1 210 210 Refresh 1 3500 3500 Contacts and bridged contact fields 17 20 340 Coils 7 20 140 Total rungs from the first one to the last one, with empty ones in between 7 50 350
8-6 Inside Pico 1760-L18xxx Cycle Time For 1760-L18xxx, the cycle time can be calculated as follows: Function Number Time Duration in µs Total Basic pulse 1 520 – Refresh – 5700 – Contacts and bridged contact fields – 40 – Coils – 20 – Total rungs from the first one to the last one, with empty ones in between – 70 – Connecting lines (only – 40 – Timing relays – – – Counters – – – Analog value function relays – – – , ) , Total – List of Times for Processing Funct
Inside Pico Function Number Time Duration in µs Total Basic pulse 1 520 520 Refresh – 5700 5700 Contacts and bridged contact fields 17 40 680 Coils 7 20 140 Total rungs from the first one to the last one, with empty ones in between 7 70 490 Connecting lines (only 2 40 180 Timing relays 1 – 60 Counters 1 – 40 Analog value function relays – – – , , ) Total Delay Times for Inputs and Outputs 8-7 7710 The time from an input physically energizing to the time Pico a
8-8 Inside Pico An input signal, S1, must be present at the input terminal for at least 20 ms before the switch contact will change from 0 to 1 (A) in the program. If applicable, this time must also include the program cycle time (B) since Pico does not detect the signal until the start of a cycle. The same debounce delay (C) applies when the signal drops out from 1 to 0.
Inside Pico 8-9 If the delay is switched on, Pico checks at 33 ms (40 ms for 50 Hz) intervals whether there is a half-wave present at an input terminal (1st and 2nd pulses in A). If Pico detects two pulses in succession, the device switches on the corresponding input internally. If this is not the case, the input is switched off again as soon as Pico does not detect two successive half-waves (1st and 2nd pulses in B). S1 1. 1.
8-10 Inside Pico Publication 1760-UM001D-EN-P - September 2005
Chapter 9 Use of Expansion Modules Overview Additional I/O points can be added to the 1760-Lxxxxx-EX Pico models. To do this, first install the expansion module and connect the inputs and outputs.
9-2 Use of Expansion Modules Outputs Expansion module outputs are processed as relay coils or contacts in the same way as they are on the Pico controller. The expansion output relays are numbered S1 to S8. Expansion module 1760-IA12XOW6I provides 6 relay outputs. The other outputs, S7 and S8, can be used as markers. Expansion module 1760-IB12XOB8 provides 8 transistor outputs. See Monitor for Short Circuit or Overload on page 9-4 for information on output faults.
Use of Expansion Modules 9-3 Monitor Functions of the Expansion Module Be Sure Power Supply is Present If the power supply of the expansion module is not present, no connection can be established between it and the Pico controller. When no power supply is present, the expansion inputs, R1 to R12 and R15 and R16, are incorrectly processed in the Pico controller and show status of 0. Also, it cannot be assured that outputs S1 to S8 will be transferred to the expansion module.
9-4 Use of Expansion Modules Monitor for Short Circuit or Overload Expansion module 1760-IB12XOB8 provides 8 transistor outputs. The outputs are thermally protected, and switch off in the event of an overload or short circuit. After a cooling period, a faulted output re-energizes in an attempt to operate the output load. If the fault condition still exists, the output will overheat and switch off again. This process is repeated until the overload is removed (or until power is turned off).
Use of Expansion Modules Module Status Example 9-5 Power can be applied to the expansion unit later than it is applied to the Pico controller. This means that Pico is switched to Run with the expansion module missing. The Pico circuit diagram below detects whether the expansion unit is operational or not. I14-M1-----[:8 -----------SM1 I14--------[:8 I1-I2------[Q1 Q1 As long as I14 = 1, the remaining circuit diagram is skipped. If I14 = 0, the circuit diagram is processed.
9-6 Use of Expansion Modules Publication 1760-UM001D-EN-P - September 2005
Chapter 10 Troubleshoot Your Controller You may sometimes find that Pico does not do exactly what you expect. If this happens, read through the following notes which are intended to help you solve some of the problems you may encounter. Use the power flow display in Pico to check the logic operations in the Pico circuit diagrams with reference to the switching states of contacts and relays. Only qualified persons should test Pico voltages while the device is in operation.
10-2 Troubleshoot Your Controller Possible Situations When Creating Circuit Diagrams Possible Situations When Creating Circuit Diagrams Explanation Remedy Cannot enter contact or relay in circuit diagram Pico is in Run mode Select Stop mode. Time switch switches at wrong times Incorrect time or time switch parameters Check time and parameters. Cannot select analog comparator ‘Ax’ Pico ac versions have no analog inputs Use Pico dc for comparing analog values.
Troubleshoot Your Controller 10-3 Possible Situations When Creating Circuit Diagrams Explanation Remedy Relay output ‘Q’ does not switch and activate the load Pico in Stop mode Select Run mode No voltage at relay contact Check installation instructions, and external wiring. Pico power supply interrupted Pico circuit diagram does not activate relay output Broken wire Pico relay is faulty Replace the Pico Event Event Explanation Remedy The actual values are not being stored retentively.
10-4 Troubleshoot Your Controller Publication 1760-UM001D-EN-P - September 2005
Chapter 11 DC Simulator Description The DC Simulator, catalog number 1760-SIM, can be used to simulate Pico inputs and outputs to test and troubleshoot programs. The simulator contains three components: input simulator board, output simulator board, and wall-mount power supply. The illustration on page 11-2 shows how to connect the simulator to Pico. The input simulator board contains 8 maintained push buttons connected to the 8 inputs of Pico as well as 2 potentiometers connected to Inputs 7 and 8.
11-2 DC Simulator Installation Guidelines ATTENTION Be sure that power is not applied when installing the input and output simulator boards. Follow the installation procedure below. Digital Inputs I7 and I8 Analog Inputs Installation Procedure I1 1. Connect inputs. I3 I2 I5 I4 I7 I6 I8 2. Connect outputs. 1760-L12BWB-xx 3. Plug in the connection cable. 4. Connect the power supply. 5. Plug in the power supply unit.
Appendix A Specifications Physical Specifications Specification 1760-L12xxx 1760-L18xxx, 1760-L20xx 1760-IA12XOW6I, 1760-IA12XOW4I 1760-IB12XOB8 1760-IB12XOB8 Dimensions W x H x D 71.5 mm (2.82 in.) x 90 mm (3.55 in.) x 56.5 mm (2.08 in.) 107.5 mm (4.24 in.) x 90 mm (3.55 35.5 mm (1.4 in) x 90 mm (3.55 in.) x 56.5 mm (2.08 in.) in.) x 56.5 mm (2.08 in.) Weight [g] 200g (7 oz.) 300g (10.
A-2 Specifications Electrical Specifications Ambient mechanical conditions Specification Value Standard Pollution degree 2 – Protection class IP 20 EN 50178, IEC 60529, VBG4 Vibration 10 to 57 Hz (constant amplitude 0.15 mm) IEC 60068-2-6 57 to 150 Hz (constant acceleration 2G) Shock 18 shocks (semi-sinusoidal 15G/11 ms) IEC 60068-2-27 Drop 50 mm (1.97 in) IEC 60068-2-31 Drop, packaged 1m (39.
Specifications A-3 Ambient mechanical conditions Specification Value Standard Resolution Range “s” 10 ms Range “M:S” 1s Range “H:M” 1 min.
A-4 Specifications DC Models 1760-L12DWD 1760-L12DWD-ND 1760-L18DWD-EX 1760-L18DWD-EXND 1760-L12BBB 1760-L12BBB-ND 1760-L12BWB 1760-L12BWB-NC 1760-L12BWB-ND 1760-L18BWB-EX 1760-L20BBB-EX 1760-L20BBB-EXND 1760-IB12XOW6I 1760-IB12XOB8 Rated value 12V dc, +30%, -15% 12V dc, +30%, -15% 24V dc, +20%, -15% 24V dc, +20%, -15% Range 10.2 to 15.6V dc 10.2 to 15.6V dc 20.4 to 28.8V dc 20.4 to 28.
Specifications Inputs A-5 AC Models Specification 1760-L12NWN 1760-L12NWN-ND 1760-L18NWN-EX 1760-L18NWN-EXND Number 8 12 Status display LCD (if provided) LCD (if provided) To power supply No No Between Inputs No No to the outputs Yes Yes off state 0 to 6V ac 0 to 6V ac on state 14 to 26.4V ac 14 to 26.
A-6 Specifications Specification 1760-L12AWA 1760-L12AWA-NC 1760-L12AWA-ND 1760-L18AWA 1760-L18AWA-EX 1760-L18AWA-EXND 1760-IA12XOW6I(1) Number 8 12 Status display LCD (if provided) LCD (if provided) To power supply No No Between Inputs No No to the outputs Yes Yes off state 0 to 40V ac 0 to 40V ac on state 79 to 264V ac 79 to 264V ac Rated frequency 50/60 Hz 50/60 Hz Input current R1 to R12, I1 to I6 (1760-L18AWA-xx also I9 to I12) 0.5 mA at 230V ac 50 Hz, 0.
Specifications A-7 DC Models Specification 1760-L12DWD 1760-L12DWD-ND 1760-L18DWD-EX 1760-L18DWD-EXND 1760-L12BBB 1760-L12BBB-ND 1760-L12BWB 1760-L12BWB-NC 1760-L12BWB-ND 1760-L18BWB-EX 1760-L18BWB-EXND 1760-L20BBB-EX 1760-L20BBB-EXND 1760-IB12XOB8(1) 1760-IB1212XOW6I 8 (1760-L12DWD-xx) 12 (1760-L18DWD-xx) 8 12 Digital Inputs: Number of Inputs 2 inputs (I7 and I8), 4 inputs (I7, I8, I11, I12) for 1760-L18xxx and 1760-L20xxx usable as analog inputs Status Display LCD (if provided) Electrical Iso
A-8 Specifications 1760-L12DWD 1760-L12DWD-ND 1760-L18DWD-EX 1760-L18DWD-EXND 1760-L12BBB 1760-L12BBB-ND 1760-L12BWB 1760-L12BWB-NC 1760-L12BWB-ND 1760-L18BWB-EX 1760-L18BWB-EXND 1760-L20BBB-EX 1760-L20BBB-EXND 1760-IB12XOB8(1) 1760-IB1212XOW6I To the Digital Inputs No No No To the Outputs Yes Yes Yes Input Type dc voltage dc voltage dc voltage Signal Range 0 to 10V dc 0 to 10V dc 0 to 10V dc Analog Resolution 0.1V 0.1V 0.1V Input Impedance 11.2K Ω 11.2K Ω 11.
Specifications A-9 High-Speed Counter Inputs, I1 to I4 1760-L12BBB, 1760-L12BBB-ND 1760-L12BWB, 1760-L12BWB-NC 1760-L12BWB-ND, 1760-L12DWD 1760-L12DWD-ND 1760-L18BWB-EX, 1760-L18BWB-EXND 1760-L18DWD-EX, 1760-L18DWD-EXND 1760-L20BBB-EX, 1760-L20BBB-EXND Counting Frequency <1 kHz Pulse Shape Square Wave Mark-to-Space Ratio 1:1 Publication 1760-UM001D-EN-P - September 2005
A-10 Specifications Outputs Relay Outputs Specification 1760-L12AWA 1760-L12AWA-NC 1760-L12AWA-ND 1760-L12BWB 1760-L12BWB-NC 1760-L12BWB-ND 1760-L12DWD 1760-L12DWD-ND 1760-L12NWN 1760-L12NWN-ND 1760-L18AWA 1760-L18AWA-EX 1760-L18AWA-EXND 1760-L18BWB-EX 1760-L18BWB-EXND 1760-L18DWD-EX 1760-L18DWD-EXND 1760-L18NWN-EX 1760-L18NWN-EXND 1760-IA12XOW6I 1760-IB12XOW6I 1760-OW2 Number of Relay Outputs 4 6 (2 for 1760-OW2) In Groups of 1 (2 for 1760-OW2) Connection of Outputs in Parallel to Increase the
Specifications Specification 1760-L12AWA 1760-L12AWA-NC 1760-L12AWA-ND 1760-L12BWB 1760-L12BWB-NC 1760-L12BWB-ND 1760-L12DWD 1760-L12DWD-ND 1760-L12NWN 1760-L12NWN-ND Filament Lamp Load 1000 W at 230/240V ac/25,000 operations A-11 1760-L18AWA 1760-L18AWA-EX 1760-L18AWA-EXND 1760-L18BWB-EX 1760-L18BWB-EXND 1760-L18DWD-EX 1760-L18DWD-EXND 1760-L18NWN-EX 1760-L18NWN-EXND 1760-IA12XOW6I 1760-IB12XOW6I 1760-OW2 500 W at 115/120V ac/25,000 operations Fluorescent Tube with Ballast 10 x 58 W at 230/240V ac/
A-12 Specifications Specification 1760-L12BBB 1760-L12BBB-ND Reverse Polarity Protection Yes 1760-IB12XOB8 1760-L20BBB-EX 1760-L20BBB-EXND CAUTION: If voltage is applied to the outputs when the polarity of the power supply is reversed, this will result in a short circuit. Isolation from Power Supply and Input Terminals 500V dc Rated Current 0.5 A dc maximum Lamp Load 5W Off State Leakage Current < 0.
Specifications Cycle Time A-13 1760-L12xxx Function Number Time Duration in µs Basic pulse 1 210 Refresh 1 3500 Contacts and bridged contact fields 20 Coils 20 Circuit connections from the first one to the last one, with empty ones in between 0 Connecting lines, only 20 , , Total Timing relays (see Table below) Counters (see Table below) Analog value function relays (see Table below) Total Number 1 2 3 4 5 6 7 8 Timing relays in µs 20 40 80 120 160 200 240 280 Count
A-14 Specifications Number 1 2 3 4 5 6 7 8 Timing relays in µs 40 120 160 220 300 370 440 540 Counters in µs 40 100 160 230 300 380 460 560 180 220 260 300 360 420 500 Analog value processors in µs 120 Dimensions 1760-L12xxx 10.75 mm (0.423 in) 50 mm (1.97 in) 90 mm (3.54 in) 45 mm (1.77 in) 110 mm (4.33 in) 102 mm (4.02 in) 4.5 mm (0.177 in) 47.5 mm (1.87 in) 56.5 mm (2.22 in) 58 mm (2.28 in) M4 35.75 mm (1.
Specifications A-15 1760-L18xxx, 1760-L20xxx and Expansion Modules 16.25 mm (0.640 in) 16.25 mm (0.640 in) 75 mm (2.96 in) M4 45 mm (1.77 in) 110 mm 90 mm (4.33 in) (3.54 in) 102 mm (4.02 in) 4.5 mm (0.177 in) 47.5 mm (1.87 in) 56.5 mm (2.22 in) 58 mm (2.28 in) 107.5 mm (4.23 in) Pico 1760-OW2 Expansion Module 110 4.33" 90 3.54" 102 4.01" 7.5 0.295" M4 7.5 0.295" 35.5 1.
A-16 Specifications Dimensions of the 1760-RM… Remote Processor modules 1760-DU… and 176-RM… 58 2.28" 176-RM… 22.5 0.89" 30 1.18" 75 2.95" 22.5 0.89" 36.2 1.43" 20.5 0.81" 27.5 1.08" Publication 1760-UM001D-EN-P - September 2005 43.2 1.
Appendix B Circuit Diagram Form See page 4-21 for an example that shows how to use these forms for planning and preparing your Pico circuit diagrams.
B-2 Circuit Diagram Form Customer: Program: Date: Page: Timing relays : : : TRG T : TRG RES : T : TRG RES T RES Analog comparators ANALOG ANALOG ANALOG A A A Timing switches - - - ON : ON : ON : OFF : OFF : OFF : Up/down counters DIR CNT RES Publication 1760-UM001D-EN-P - September 2005 DIR C CNT RES DIR C CNT RES C
Glossary The following terms are used throughout this manual. Refer to the Allen-Bradley Industrial Automation Glossary, Publication Number AG-7.1, for a complete guide to Allen-Bradley technical terms. Analog input - The DC versions of Pico have analog inputs I7 and I8. The input voltage range is 0 V to 10 V. Input data is evaluated by built-in analog comparator function relays. Circuit connections - Every line in the circuit diagram display represents a circuit connection.
Glossary 2 Memory Module - The memory module is used to store your Pico circuit diagram, together with its parameter and Pico settings. Your data on the memory module will be retained, even if the power supply fails or is switched off. The memory module is inserted into the interface slot on the Pico device. Operating buttons - Pico has eight operating buttons. These are used to select menu functions and create circuit diagrams. The large round button in the middle is used to move the cursor.
Glossary 3 Notes: Publication 1760-UM001D-EN-P - September 2005
Glossary 4 Publication 1760-UM001D-EN-P - September 2005
Index Numerics 20 mA sensors 2-21 A Actual values 4-19 Allen-Bradley contacting for assistance Preface-3 support Preface-3 AND circuit 4-56 B Basic circuit Changeover circuit 4-57 Parallel connection 4-56 Permanent contact 4-55 Series connection 4-56 Break contact 4-4, 4-9 Button ALT 3-7 OK 3-5 Buttons 1-6 OK 4-3 C Cable lengths 2-16 Cable protection 2-11 Changeover circuit 4-57 Changing menu level 3-5 Changing to summer time 6-10 Changing to winter time 6-10 Circuit connection Deleting 4-12 Inserting 3-
2 Index Determining the cycle time 8-3 Dimensions A-1 dimensions 1760-OW2 A-15 E Entry Contact 3-6 Error handling 10-1 Example programs 4-55 Examples Impulse relay 7-6 S/R coil (break contact) 7-5 S/R function 7-7 Timing relay on-delayed 7-9 Timing relay, off-delayed 7-11 Timing relay, single-pulse 7-12 Expansion module inputs 9-1 Expansion module installation 2-3 Expansion module outputs 9-2 F Flicker effect 7-4 Function relays Counter relays 4-32 Example 4-21 Overview 4-19 Timing relays 4-26 Latching
Index Changing the switching time 6-8 Display 6-7 Power flow display 4-25 Password Activating 6-3 Changing 6-5 Deleting 6-5 Remove protection 6-5 Setting 6-2 Unlocking 6-4 Password incorrect or not known 6-5 P-Buttons 4-12 PC connection 5-5 PicoSoft software 5-5 Power failure 3-3 Power flow display 3-8, 4-12, 4-13, 4-25 Program examples 4-55 Protecting timer and counter settings 4-25 publications, related Preface-2 Purpose of this Manual Preface-1 R 3 S Set 4-18 Setpoint potentiometers 2-20 Setpoints
4 Index Relays 4-15 Rules 4-15 Publication 1760-UM001D-EN-P - September 2005 X XOR circuit 4-57
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