80-1103-00 Rev. 01.
INTRODUCTION TO THE MANUAL This manual contains the information needed to install, operate and maintain Beck Model Group 11 Electronic Control Drives equipped with the Digital Control Module (DCM-2), manufactured by Harold Beck & Sons, Inc. of Newtown, Pennsylvania. The Group 11 drive is a powerful control package designed to provide precise position control of dampers, valves, fluid couplings and other devices requiring up to 1,800 lb-ft (2 440 N•m) of drive torque.
CONTENTS Product Description ................................................................................................................................... 4 General Specifications ............................................................................................................................. 6 Outline Dimension Drawings .................................................................................................................... 8 Installation .......................................
PRODUCT DESCRIPTION Beck control drives are engineered for precise, reliable operation of dampers, quarter-turn valves and fluid drives. The cool, stable operation of Beck’s control motors coupled with the powerful gear train provide the tight, responsive control required by modern control loops to optimize output while keeping operating costs low. The unique all spur gear construction used in the Beck control drive is designed for long term durability.
TYPICAL APPLICATIONS Beck control drives are ideally suited for use on ball, plug and butterfly valves, as well as dampers and fluid drives. When equipped with a sheave and multi-turn option (consult your Beck Sales Engineer for details), the drive can be used to raise and lower a weight-balanced damper. DCM-2 equipped Beck drives are designed for precise position control in modulating applications.
PRODUCT DESCRIPTION GENERAL SPECIFICATIONS—ALL MODELS Drive Power 120 V ac single-phase 50 or 60 Hz 240 V ac single-phase 50 or 60 Hz Allowable Tolerance +10% -15% Max. Current and Power Model 11-159, -169 11-209, -269 11-309, -369 11-409, -469 Operating Conditions Communication Interface 6 120 V ac .40 A .65 A .65 A 3.10 A 48 W 78 W 78 W 400 W 240 V ac .20 A .33 A .33 A 1.55 A 48 W 78 W 78 W 400 W -40° to 185°F (-40° to 85°C) 0 to 100% relative humidity HART protocol (Rev.
GENERAL SPECIFICATIONS—ALL MODELS (cont’d) Overtorque Protection (Optional) If the output torque of the drive exceeds 150% (adjustable from 70% to 150%) of the drive rating, the motor will shut off (feature can be enabled/disabled). Alarm Annunciation Available at terminal E. Temperature Indication Measures the internal temperature of the drive and triggers an alarm when the temperature exceeds the rating range. Over-travel Limit Switches Two SPDT (CW and CCW) provide over-travel protection.
OUTLINE DIMENSION DRAWINGS MODEL 11-159 SPECIFICATIONS COVER, DIGITAL CONTROL MODULE (ALLOW 4" (102 mm) FOR REMOVAL) COVER, TERMINAL BLOCK EXTERNAL WIRING 1" N.P.T. CONDUIT, POWER CONNECTION 6 7/8" (175 mm) 5 1/4" (133 mm) HANDSWITCH COVER, POSITION SENSING DEVICES 13 1/2" (343 mm) HANDWHEEL T 4 6 8 1/2" (13 mm) 2 6 4 2 0 0 L 11 1/16" R (281 mm) 10 1/2" N.P.T.
MODEL 11-169 SPECIFICATIONS COVER, DIGITAL CONTROL MODULE (ALLOW 4" (102 mm) FOR REMOVAL COVER, TERMINAL BLOCK EXTERNAL WIRING 1/2" N.P.T. CONDUIT, SIGNAL CONNECTION 6 7/8" (175 mm) 7 1/2" (191 mm) GEAR MODULE / MOTOR ASSEMBLY 5 1/4" (133 mm) HANDSWITCH 2 3/16" (56 mm) 2 7/16" (62 mm) COVER, POSITION SENSING DEVICES 13 1/4" (337 mm) 3 1/4" (83 mm) 45° 1" N.P.T. CONDUIT, POWER CONNECTION 11 1/2" (292 mm) MAX.
OUTLINE DIMENSION DRAWINGS MODEL 11-209 & 11-309 SPECIFICATIONS COVER, TERMINAL BLOCK EXTERNAL WIRING 6 1/16" (154 mm) COVER, DIGITAL CONTROL MODULE 1" N.P.T. CODUIT, POWER CONNECTION HANDSWITCH 6 7/32" (158 mm) 4 25/32" (121 mm) 1/2" N.P.T. CONDUIT, SIGNAL CONNECTION NAMEPLATE COVER, POSITION SENSING DEVICES GEAR MODULE ASSEMBLY AUX.
MODEL 11-269 SPECIFICATIONS 1/2" N.P.T. CONDUIT, SIGNAL CONNECTION COVER, TERMINAL BLOCK EXTERNAL WIRING COVER, DIGITAL CONTROL MODULE 9 7/8" (251 mm) NAMEPLATE 6 1/16" (154 mm) AUX. SWITCH RATING: 10A 240 Vac COVER, POSITION SENSING DEVICES 4 25/32" (121 mm) HANDSWITCH 2 21/32" (67 mm) 17 7/8" (454 mm) 1" N.P.T. CONDUIT, POWER CONNECTION 5 1/2" (140 mm) 45° 12 1/8" (308 mm) MAX.
OUTLINE DIMENSION DRAWINGS MODEL 11-369 SPECIFICATIONS 1/2" N.P.T. CONDUIT, SIGNAL CONNECTION COVER, TERMINAL BLOCK EXTERNAL WIRING COVER, DIGITAL CONTROL MODULE 9 7/8" (251 mm) NAMEPLATE 6 1/16" (154 mm) AUX. SWITCH RATING: 10A 240 Vac COVER, POSITION SENSING DEVICES 4 25/32" (121 mm) HANDSWITCH 17 7/8" (454 mm) 12 1/8" (308 mm) MAX. (ALLOW 6" (152 mm) FOR REMOVAL) 1" N.P.T.
MODEL 11-409 SPECIFICATIONS COVER, TERMINAL BLOCK EXTERNAL WIRING 6 25/32" (172 mm) COVER, DIGITAL CONTROL MODULE 7 27/32" (199 mm) 1" N.P.T. CODUIT, POWER CONNECTION 4 3/4" (121 mm) 1/2" N.P.T. CONDUIT, SIGNAL CONNECTION NAMEPLATE MOTOR GEAR MODULE ASSEMBLY COVER, POSITION SENSING DEVICES L AUX. SWITCH RATING: 10A 240 Vac T 21 1/4" (540 mm) R 18 13/16" (478 mm) 6 1/4" (159 mm) 18° HANDWHEEL 3/4" (19 mm) 7" (178 mm) 6 3/4" (172 mm) 7 7/8" (200 mm) 7 5/8" (194 mm) 13 5/8" (346 mm) MAX.
OUTLINE DIMENSION DRAWINGS MODEL 11-469 SPECIFICATIONS COVER, TERMINAL BLOCK EXTERNAL WIRING 12 9/16" (319 mm) NAMEPLATE 6 25/32" (172 mm) COVER, DIGITAL CONTROL MODULE 1/2" N.P.T. CONDUIT, SIGNAL CONNECTION AUX. SWITCH RATING: 10A 240 Vac HANDSWITCH 4 3/4" (121 mm) COVER, POSITION SENSING DEVICES 21 1/4" (540 mm) 2 19/32 (66 mm) 1" N.P.T. CONDUIT, POWER CONNECTION 6 1/4" (159 mm) 13 5/8" (346 mm) MAX. (ALLOW 6" (152 mm) FOR REMOVAL) 14 1/4" (362 mm) MOUNTING HOLES 5/8-11 UNC-2B x 1.63" (41.
INSTALLATION SAFETY PRECAUTIONS WARNING Installation and service instructions are for use by qualified personnel only. To avoid injury and electric shock, do not perform any servicing other than that contained in this manual. STORAGE INFORMATION The drive should be stored in its shipping carton in a clean, dry area. If it is necessary to store the drive outdoors for a long period of time, it should be removed from its shipping carton and stored above ground.
INSTALLATION INSTALLATION—MECHANICAL Beck Group 11 drives may be installed in any convenient orientation, because the gearing does not require an oil bath. Refer to the outline dimension drawings on pages 8–14 for physical dimensions and required clearances.
INSTALLATION SIGNAL WIRING Each Beck drive is custom built to match the control requirements of your system specified at the time of order. Each drive has a specific wiring diagram attached to the inside of the wiring terminal cover. Typical wiring connections are described below. A drive can be ordered with up to four optional auxiliary switches. Wiring connections for these are described on page 26. To prevent Handswitch initiated motion, remove the jumper between terminals A and C.
INSTALLATION START-UP LINKAGE REQUIREMENTS (If Applicable) In most applications, the best control will result when the linkage is adjusted so that the full 100° angular travel of the Beck drive output shaft is used, even though the valve or damper may travel less than 100°. The general requirements for a good linkage are: 1. It must be rigid enough to carry the link thrust without bending or deforming. 2.
in the field (see Table 1, below, for instructions to calculate pipe length). To simplify installation of the pipe link, the kit accepts NPT right-hand threads on both ends of the pipe. Left-hand threads are internal to the linkage kit assembly, making final length adjustments quick and easy. To order pipe linkage kits, first obtain the approximate overall linkage length “A” in the figure below. Select the kit part number from Table 1, below.
OPERATION HOUSING Beck electronic control drives have individual cast aluminum compartments for each of the five main components: The control motor, wiring terminal block, drive train, digital control module, and control end. Gasketed covers and sealed shafts make the drives ideally suited to outdoor and high humidity environments.
LOSS OF DEMAND INPUT SIGNAL (L.O.S.) When the Demand input signal drops to approximately –5%, the DCM-2 considers the Demand input signal to be invalid. DCM-2s are typically configured to stop the drive during L.O.S. conditions, but may be configured by the factory or by using the HART or Serial interface to run the drive to a predetermined position. Under the L.O.S. condition, the “STAT” and “DEMAND” LEDs will light. When the input signal is corrected, the drive will automatically resume normal operation.
DIGITAL CONTROL MODULE (DCM-2) INPUT: DIGITAL CONTROL MODULE (DCM-2) FWD REV STAT PWR Beck modulating drives are equipped with a precision, digital control module (DCM-2) designed to receive conventional 4–20 mA or 1–5 V dc control signals directly—eliminating the need for contact protection devices, relays, switches and reversing starters. The DCM-2 modulates the drive output shaft in response to an analog Demand input signal and is designed to operate continuously in temperatures up to 185°F (85ºC).
DCM-2 LOCAL INTERFACE Operation OVERVIEW Overview LEDs The DCM-2 customer interface panel (pictured below) allows the user to easily calibrate the drive and troubleshoot conditions. The following information provides an overview of the DCM-2 customer interface panel features. The four LEDs, as highlighted below, indicate the present state of the drive. FWD This LED is lit when the drive is receiving a Demand signal greater than its position.
DCM-2 LOCAL INTERFACE Status Indication LEDs Pushbutton Controls When the “STAT” LED is lit, the applicable status indication LED(s) (pictured below) will light to reveal the condition(s) as described below. An alarm is also available at terminal E. When the condition is corrected, the status will automatically reset. Each status LED is described below, with a more detailed explanation of the function provided on page 21.
DCM-2 LOCAL INTERFACE All Beck drives are shipped completely calibrated to the customer’s specifications that were written into the equipment order and are ready to be installed. If the need arises to change the drive calibration, first confirm that the drive is installed as specified and operating properly before proceeding with the change. Position reference and demand calibration are performed using the DCM-2 customer interface panel, but may also be configured using the HART or Serial interface.
DCM-2 LOCAL INTERFACE NOTE: Your Beck drive was shipped from the factory ready for installation; no electrical adjustments are required before placing it in operation. Each drive is set up and calibrated to the specifications that were written into the equipment order. Under normal operating conditions there is no need to recalibrate the control drive.
1. Remove the control end cover and terminal block cover (1/2" bolt heads). 2. Use the electric Handswitch to drive the control shaft so that the CW switch cam screw is accessible. Using a 7/64" hex wrench, loosen the screw so that the cam is just snug on the shaft (see illustration below). 3. Move the output shaft clockwise to the desired CW limit. 4. Turn the Handswitch to the “STOP” position. 13.
DCM-2 LOCAL INTERFACE Calibration - Demand DEMAND CALIBRATION Calibration Procedure DCM-2 boards are designed to accept a 4–20 mA (or 1–5 V dc) analog demand signal. Narrower spans within this range can also be accommodated for split range operation (see page 29). The input comes calibrated from the factory for the full range unless otherwise specified by the customer.
Split Range Operation 6. Press and hold the “CALIBRATE” pushbutton on the DCM-2 customer interface panel, then press the “SET DEM 100%” pushbutton until the “ACKNOWLEDGE” LED is lit.* It is sometimes desirable or necessary to have more than one final control element controlling a single process. Often, this type of control strategy requires that two to four Beck drives each respond to different portions of one 4–20 mA Demand signal from the control system.
DCM-2 LOCAL INTERFACE POSITION CALIBRATION In order to correctly position the drive output shaft in response to the Demand input signal, the DCM-2 receives a position signal from the drive’s position sensor and compares this actual position to the Demand input. This process requires that the DCM-2 interprets the position signal appropriately for the full range of desired travel. This procedure will calibrate the DCM-2 to accept the position signal and interpret the appropriate 0–100% range.
DCM-2 LOCAL INTERFACE DIRECTION OF OUTPUT SHAFT ROTATION (CW vs. CCW) Direction of output shaft rotation is determined by observing the end of the output shaft (see illustrations below). Direction of rotation is defined as the direction of output shaft rotation produced by an increasing Demand signal. Unless otherwise specified at the time of order, the output shaft is factory set to rotate clockwise in response to an increasing signal.
DCM-2 LOCAL INTERFACE START Is AC voltage at terminals B & C between 102 & 132 V ac? NO Connect proper power Is there a jumper from terminal A to terminal C? YES YES Does drive work with Handswitch? NO Troubleshooting Does drive work properly CW? YES NO Does motor appear to energize? NO YES NO YES NO Is there 0 volts across fuse “F1” of the DCM? NO Replace the fuse, see diagram on p.
Note: Choose the side of the slash corresponding with the direction of travel in which the drive is not working; i.e., CW/CCW or green/red Does Handwheel turn freely without repositioning drive? Does the voltage across terminals B–U/B–V = line voltage? Move Handswitch to CW/CCW per direction drive does not move YES NO NO Does Handwheel shudder about one position? NO YES Check SLM for damage; rebuild or replace as necessary.
DCM-2 HART INTERFACE Communication BECK-MK2 HART COMMUNICATOR MENUS FOR THE DCM-2 Online (1) 1 Functions 2 Position 3 Demand 4 Loop(Dem) 5 Trq/Thrust 6 Temp 7 Feedback 1 45.4% 45.4% 11.29 mA 3% 73 degF 11.
HANDHELD COMMUNICATOR WIRING CONNECTIONS 35
DCM-2 HART INTERFACE The DCM-2 board is the control center of the drive. Drive configuration and calibration are accessed and set through the DCM-2 board. Using the HART interface requires a HART® compatible communicator. Typically, a universal model 275/375 HART® communicator is used, but any device, computer or controller capable of communicating with HART® devices and supporting the Beck DCM2 device description can be used.
MENU DESCRIPTIONS (See Figure 1, Page 34) Online Menu (Block 1) When communications are established with the communicator, the Online menu is displayed. This is the gateway to all the other menus and it also provides current information about the drive.
DCM-2 HART INTERFACE Configuration Menu (Block 3C) The Configuration menu serves as the gateway to all of the drive operating setup parameters. The user can select any of five different setup submenus that can be used to configure the drive based on the physical layout and the desired operation. The five setup submenus are described below. In addition to these five setup menus, there is a "Restore to Factory" selection which resets the drive configuration to its as-shipped settings.
Demand Setup Submenu (Block 4D) This menu is where all the Demand input signal related drive parameters are set. The eight parameter entries are as follows: 1. DemRngLwr - The value of the Demand signal (in mA) that corresponds to 0%. Normally set to "4.00 mA", this value should be set above the "DemLimLwr" value. 2. DemRngUpr - The value of the Demand signal (in mA) that corresponds to 100%. Normally set to "20.00 mA", this value should be set below the "DemLimUpr" value. 3.
DCM-2 HART INTERFACE 40 Communication Statistics Menu (Block 3D) Manual Operation Menu (Block 3E) This menu is where all the drive’s stored operating statistics are available. There are eight different statistics available: 1. Starts - Logs and displays the total number of starts the drive motor has made. 2. Reversals - Logs and displays the total number of times the motor started in a direction opposite to the previous start. 3.
Diagnostics Menu (Block 3F) Operating Status Submenu (Block 5C) This menu provides access to all the DCM-2 stored online diagnostic information about drive operation. The menu provides six submenus accessing drive statistics and online drive status. This menu displays the ON or OFF status of eight drive parameters: Dem Limits, Pos Limits, Temp Limits, Torq Limits, Over-Torq Stop, Stalled, Feedback Open, and Switch Block. See below.
DCM-2 HART INTERFACE CW Inhibitors Submenu (Block 5F) This menu displays the ON or OFF status of the contributing sources of retract movement inhibitors of motor operation: Balance, Supervisory, Stall, OverTrq/Thr, Switch Block, Bad Pos Sig, Bad Dem Sig, Local Cal. See below.
RealTimeClock Submenu (Block 4M) This menu allows the date and time to be set. The settings are as follows: 1. RTC Day - Numerical entry sets the day of the month. 2. RTC Month - Numerical entry sets the month. 3. RTC Year - Numerical (4 digit) entry sets the year. 4. Hour (24) - Numerical entry sets the hour of the day (1–24). 5. Minute - Numerical entry sets the minute of the hour. Calibration Trim Menu (Block 3G) This menu displays/sets drive calibration values: 1.
DCM-2 HART INTERFACE All drives are shipped completely configured to the customer’s specifications and are ready to be installed. If the need arises to change the configuration of the drive (i.e., change one or more of the setup parameters that define how the drive operates), this may be accomplished utilizing the HART ® interface and a communications tool (model 275 or 375 HART ® Communicator) as described in the Communications section of this manual.
WARNING Carefully follow the on-screen warnings and messages when proceeding, because changing drive setup parameters can cause the drive to reposition. This can adversely affect the process and cause potentially dangerous conditions. STALL PROTECTION The DCM-2 board provides protection of the drive motor and gearing in the event of a stalled condition. The board accomplishes this by sensing that the drive is unable to balance for a set period of time known as the “stall time”.
DCM-2 HART INTERFACE OVERTRAVEL ANNUNCIATION, CONT’D. 0% and an over-travel limit switch is open. This eliminates the nuisance message, but does not eliminate the message for other scenarios like the Handswitch being in the STOP position. Changing Overtravel Annunciation STEP 1 - From the HART® communicator “Online” menu, move to the “General Setup” menu and select the “LimitSwitch” parameter.
Changing Characterization STEP 1 - From the HART® communicator “Online” menu, move to the “Demand Setup” menu and select the “Dem Curve” parameter. This is accomplished by using the up and down arrow keys to select the appropriate item in each menu and then moving forward by pressing the right arrow key. Follow the Menu Tree (Figure 1, page 34) to navigate.
DCM-2 HART INTERFACE WARNING Carefully follow the on-screen warnings and messages when proceeding, because changing this parameter online could cause the drive to reposition. This can adversely affect the process and cause potentially dangerous conditions. Changing LOS Trip Point STEP 1 - From the HART® communicator “Online” menu, move to the “Demand Setup” menu and select the “DemLimLwr” parameter.
Enabling Torque Functions STEP 1 - From the HART communicator “Online” menu, move to the “Torque Setup” menu and select the “Trq/Thrust” parameter. This is accomplished by using the up and down arrow keys to select the appropriate item in each menu and then moving forward by pressing the right arrow key. Follow the Menu Tree (Figure 1, page 34) to navigate. STEP 2 - With the “Trq/Thrust” parameter selected, press the right arrow key to display the two entry choices: “Enabled” or “Disabled”.
DCM-2 HART INTERFACE All Beck drives are shipped completely calibrated to the customer specifications, and are ready to be installed. If the need arises to change the drive calibration, confirm that the drive is installed as specified and operating properly before proceeding with the change. It is also helpful to verify the drive configuration. This can be done by reviewing the settings in the Configuration menu.
DIRECTION OF SHAFT ROTATION (CW VERSUS CCW) Direction of shaft rotation is determined when looking at the end of the output shaft (see figures below). Direction of rotation is defined as the direction of output shaft rotation produced by an increasing demand signal. Unless otherwise specified at the time of order, the output shaft is factory-set to rotate clockwise in response to an increasing signal.
DCM-2 HART INTERFACE NOTE: Your Beck drive was shipped from the factory ready for installation; no electrical adjustments are required before placing it in operation. Each drive is set up and calibrated to the specifications that were written into the equipment order. Under normal operating conditions there is no need to recalibrate the control drive.
1. Remove the control end cover and terminal block cover (1/2" bolt heads). 2. Use the electric Handswitch to drive the control shaft so that the CW switch cam screw is accessible. Using a 7/64" hex wrench, loosen the screw so that the cam is just snug on the shaft (see illustration below). 3. Move the output shaft clockwise to the desired CW limit. 4. Turn the Handswitch to the “STOP” position. 13.
DCM-2 HART INTERFACE POSITION SENSOR SETUP In order to correctly position the drive output shaft in response to the input Demand signal, the DCM-2 board receives a position signal from the drive’s position sensor (CPS) and compares this actual position to the desired Demand input. This process requires that the DCM-2 interprets the CPS signal appropriately for the full range of desired travel.
Short-stroke Operation (Reducing Full Travel) Typically, it is best to use the full 100% travel of the drive in response to the 0–100% Demand input signal. In certain applications, as a last resort, it may become necessary to reduce the full travel of the drive. In these applications, the DCM-2 can be calibrated to accommodate reduced stroke.
DCM-2 HART INTERFACE FEEDBACK SIGNAL CALIBRATION DCM-2 boards have the capability of providing a 4–20 mA output signal so that the drive’s true output shaft travel can be monitored remotely. The signal comes calibrated from the factory to provide a precise 4–20 mA signal corresponding to 0–100% drive travel.
DCM-2 HART INTERFACE DEMAND SIGNAL CALIBRATION DCM-2 boards are designed to accept a 4–20 mA (or 1–5 V dc) analog Demand signal. Narrower spans within this range can also be accommodated for split range operation (see explanation following). The input comes calibrated from the factory for the full range unless otherwise specified. It is not necessary to calibrate the Demand input when the drive is installed. If the Demand must be changed, it is accomplished using a HART comunication device.
DCM-2 HART INTERFACE TORQUE MEASUREMENT CALIBRATION DCM-2 boards have the capability of measuring the drive output torque and providing several torque-related features. The torque measurement is calibrated to the drive’s rated output at the factory. There is normally no reason to recalibrate this feature in the field, unless a new DCM-2 board has been installed. In the event that calibration is required, it is easily accomplished by using a HART communication device.
DCM-2 HART INTERFACE COMMON HART® MESSAGES HART® protocol maintains both standard and device specific informational messages that are displayed on the 275/375 Handheld Communicator when various conditions occur. They can also be used to trigger alarms and messages in other Maintenance - Alarm Messages HART® compatible monitoring systems. These messages alert the user to various alarm conditions and make it much easier to diagnose problems.
DCM-2 HART INTERFACE Maintenance - Alarm Messages Demand Signal and Process Variable Messages (con't) Message Description “The Torque/Thrust is greater than the This is a Beck-specific message that can appear after the HART®defined (“Process applied to the non-primary variable is outside output rating” the operating limits of the field device”) message mentioned previously.
Message Description “ A n a l o g o u t p u t 1 a n d i t s d i g i t a l This is an additional standard HART®-defined message that representation are outside the operating appears whenever the HART® primary variable (Position signal) range limits, and not responding to input” is outside the design or calibrated range. It accompanies the message above. “The Position Signal is less than –5% or This is a Beck-specific message that appears after the HART®defined messages above.
DCM-2 HART INTERFACE Maintenance - Troubleshooting ELECTRO / MECHANICAL -- CHART 1 START DOES DRIVE WORK PROPERLY WITH THE HANDSWITCH? YES NO CONNECT PROPER POWER NO IS PROPER AC POWER VOLTAGE CONNECTED ACROSS TERMINAL C+ AND B-? YES NO INSTALL JUMPER IS JUMPER FROM TERMINAL A TO C PRESENT AND INTACT? YES GO TO B1 PAGE 63 NO DOES MOTOR APPEAR TO ENERGIZE? NO DOES IT WORK PROPERLY CW? YES YES YES DOES HANDWHEEL RUN FREELY BUT DRIVE WILL NOT REPOSITION? CHECK DRIVE NO DOES DRIVE RUN YES R
IS SUPPLY VOLTAGE ACROSS TERMINAL C & B BETWEEN 102 & 132 V AC? NO APPLY CORRECT POWER YES GO TO CHART 2, PG.
DCM-2 HART INTERFACE Maintenance - Troubleshooting ELECTRONICS DIAGNOSTICS -- CHART 2 CONNECT HART COMMUNICATOR & ESTABLISH COMMUNICATIONS ARE ANY HART ERROR MESSAGES DISPLAYED ON THE COMMUNICATOR? A2 YES NO WILL BOARD COMMUNICATE? VIEW ALL DYNAMIC INFORMATION DISPLAYED IN THE “ONLINE” MENU YES NO DOES COMMUNICATOR DISPLAY YES “NO DEVICE FOUND” MESSAGE? DOES “LOOP (DEM)” IN mA CORRESPOND TO THE EXPECTED DRIVE DEMAND INPUT SIGNAL? IS PROPER DC SIGNO NAL VOLTAGE PRESSENT ACROSS TERMINAL AA+, BB-?
NOTE: ADDITIONAL ERROR MESSAGES AND WARNINGS MAY BE DISPLAYED ON THE HART COMMUNICATOR. THOSE NOT MENTIONED HERE ARE EITHER REDUNDANT OR NOT RELATED TO ERRORS THAT PREVENT THE DRIVE FROM RESPONDING & POSITIONING CORRECTLY; MOST ARE DESCRIPTIVE AND ARE DISCUSSED UNDER THE APPROPRIATE SECTION ELSEWHERE IN THIS MANUAL.
DCM-2 SERIAL INTERFACE COMMUNICATIONS The Beck Digital Control Module (DCM-2) is equipped with a serial interface which allows for direct communication with a computer. Using a communication cable, connect the DCM-2 to the computer using the DCM-2’s RS-232 (J20) connector (see illustration on this page) and the computer’s COM port. Ensure that the COM port on the computer is active, and that the cable is plugged into the proper COM port if more than one is present (e.g., COM1, COM2, etc.).
DCM-2 SERIAL INTERFACE Commands COMMANDS AND ARGUMENTS Commands can be used for a variety of functions including changing the operating configuration of the drive, verifying operation settings, calibration and accessing diagnostic information. There are essentially four different types of commands: 1. D u a l - p u r p o s e c o m m a n d s . T h e s e commands can be used to either modify drive configuration settings or display the settings already set in the drive.
DCM-2 SERIAL INTERFACE Commands SERIAL COMMANDS The following is a list of serial commands available through the RS-232 interface. Error codes associated with these commands are listed on page 73. General Configuration Commands (p. 69) stepsize drvdir stalltime sernum Reset Factory Settings Commands (p. 69) restoremodes harttype Demand Signal Commands (p. 69 & 70) dem0pctma dem100pctma trimdem4ma trimdem20ma demfunc demlos demlosgtp Position & Feedback Signal Commands (p.
Note: For specific information on the following functions, see the HART interface section of the manual. General Configuration Commands Command Description Argument n and Information stepsize n Sets and/or displays the size (in degrees) of one incremental movement of the output shaft. n = stepsize in degrees. The minimum value that can be entered is "0.10"; which is also the standard value. The maximum value is "2.50".
DCM-2 SERIAL INTERFACE Commands Note: For specific information on the following functions, see the HART interface section of the manual. Demand Signal Commands (con't) Command Description Argument n and Information dem100pctma n Sets the Demand signal value that corresponds to 100% drive position. n = the Demand signal as a decimal in milliamps. The minimum acceptable value is the Demand at 0% plus 4.00 mA. For example, if the 0% Demand signal is 4.00 mA, then the 100% Demand signal must be 8.
Position and Feedback Signal Commands Command Description Argument n and Information travel n Sets and/or displays the value that represents 100% travel. n = the desired length of travel in degrees. fdbk0pctma n Sets and/or displays the mA value of the Feedback signal that represents the 0% drive position. n = the desired Feedback signal for 0% drive position in mA. The minimum value is 3 mA ("3.
DCM-2 SERIAL INTERFACE Commands Note: For specific information on the following functions, see the HART interface section of the manual. Torque Sensing Commands (con't) Command Description Argument n and Information torqconst n Assigns the count value to be associated with the torque span. This number is unique to each drive. n = the torque span value in counts. This number is determined during manufacture and is noted on a tag affixed to the drive body within the electronics compartment.
DCM-2 SERIAL INTERFACE Command Error Codes Command Error Codes When an error is encountered using the serial commands, an "ERROR XX" message is returned. The table below provides a description of the error codes ("XX"). Code Description Information 2 Invalid selection Displayed when an unknown command has been entered. 3 Value too big Displayed when an entered numeric value exceeds expected parameters. 4 Value too small Displayed when an entered numeric value is less than expected parameters.
MAINTENANCE ROUTINE Beck drives require only a minimum of routine maintenance. A visual inspection is in order to verify that the connection to the final control element is intact and operating normally. If vibration is present, check the electrical terminal connections and other hardware for tightness. LUBRICATION Periodic lubrication is not required on Beck control drives.
MAINTENANCE COMPONENT REPLACEMENT This section covers replacement of many components of the drive. Note that some components are not field-repairable. Refer to the drive outline dimension drawings on pages 8–14 and to the cutaway illustration on page 4 for location of components on the drive. If it should ever be necessary to replace the output gear, shaft, or output shaft bearings, a major overhaul is required and the drive should be returned to the factory.
MAINTENANCE COMPONENT REPLACEMENT OVER-TRAVEL LIMIT AND AUXILIARY SWITCHES SELF-LOCKING MECHANISM (SLM) Complete switch assemblies may be replaced. It is not possible to replace individual switches. To replace switch assemblies, remove the control end cover (1/2" bolt heads) and extensions, if applicable. Remove the screws holding the switch assembly to the plate and slide it out to the side. Transfer the wires one at a time to the replacement assembly using the push-on lugs provided.
HANDSWITCH DCM-2 BOARD To replace the Handswitch, remove the terminal cover, and then remove the terminal plate (11-209/-269, -309/-369, and -409/-469 only). Clip the five wires from the old Handswitch. Remove the knob and the nut under the knob to remove the switch. Install the new Handswitch as shown below. Splice the wires color for color. Inspect the terminal plate gasket and replace if necessary.
MAINTENANCE COMPONENT REPLACEMENT To remove the CPS-2: 1. Run the control drive to its midpoint of travel with the local Handswitch. (If the standard rotation of 100° has been reduced to 80°, the midpoint of travel is 40°.) 2. Disconnect 120 V ac power to the drive. Remove the terminal, DCM-2 compartment and control end covers (1/2" bolt heads). 3. Record the wire colors on the terminal block of the CPS-2 (see illustration at right), then disconnect the wires. The terminals are spring-loaded.
APPENDIX SPARE PARTS RECOMMENDED SPARE PARTS HOW TO ORDER SPARE PARTS It is recommended that certain replacement parts be stocked for quick availability in the event that service of your Beck control drive is required. The types of parts are listed in Table 4, below. Select the needed parts from the spare parts list given below. Specify the drive’s model / serial number (e.g., 11-309-031891-01-02) given on the nameplate to allow the factory to verify the part selection.
APPENDIX COMPONENTS TABLE 6: DRIVE COMPONENTS FOR MODEL 11-159 / -169 ITEM NO. 1 2 3 4 5 6 7 8 9 10 DESCRIPTION Body rear Body front Output shaft assembly and main gear Spring washer Ball bearing, output shaft Seal, output shaft Gear, 3rd combination Gear module assembly, see Table 9, page 88, for part number Control motor, see Table 5, page 84, for part number Handwheel ITEM NO.
TABLE 7: DRIVE COMPONENTS FOR MODEL 11-209 / -269 / -309 / -369 ITEM NO. 1 2 3 4 5 6 7 8 9 10 11 12 DESCRIPTION Body rear Body front Output shaft assembly and main gear Spring washer Ball bearing, output shaft Seal, output shaft Gear, 3rd combination Pin, 3rd combination gear Thrust washer Gear module assembly, see Table 9, page 88, for part number Control motor, see Table 5, page 84, for part number Handwheel ITEM NO.
APPENDIX COMPONENTS TABLE 8: DRIVE COMPONENTS FOR MODEL 11-409 / -469 ITEM NO. 1 2 3 4 5 6 7 8 9 10 11 DESCRIPTION Body rear Body front Output shaft assembly and main gear Spring washer Ball bearing, output shaft Seal, output shaft Gear, 3rd combination Pin, 3rd combination gear Thrust washer Gear module assembly, see Table 9, page 88, for part number Control motor, see Table 5, page 84, for part number ITEM NO.
TABLE 9: GEARS, TORQUE AND TIMING OPTIONS Motor Drive Maximum Models Models -159 & -_09 -_69 Current @ Gear Timing Timing Model Approx. Overhung Motor Part 120 V ac, Module (sec/100°) @ (sec/90°) @ Number Weight Load Number 60 Hz* 11-159 11-169 50 lbs (23 kgs) 56 lbs (25 kgs) 20-2700-20 750 lbs (340 kgs) 20-2701-20 11-209 11-269 11-309 11-369 11-409 11-469 .17 .32 120 lbs (54 kgs) 115 lbs 20-2704-21 3,000 lbs (1 361 kgs) (52 kgs) 125 lbs (57 kgs) 115 lbs .
NOTES 84
INDEX Application reviews .......................................... 87 Service............................................................. 87 Beck linkage kits .......................................... 5, 18 Site surveys ..................................................... 87 Components .............................................. 80–82 SLM ........................................................... 20, 76 Component replacement ........................... 75–78 Spare parts, recommended ........
SERVICES PRODUCT DEMONSTRATIONS Each of Beck’s Sales Engineers has access to a complete set of drive models so that he can demonstrate virtually any of their features at your location. In order to arrange to see a Beck drive in your plant or office, contact Beck’s Sales Department. SITE SURVEYS Beck Sales Engineers are available to discuss your process control requirements.
Serving the Process Industries since 1936 ... R HAROLD BECK & SONS, INC. 11 TERRY DRIVE NEWTOWN, PENNSYLVANIA 18940 USA PHONE: 215-968-4600 FAX: 215-860-6383 www.haroldbeck.
