INSTALLATION OPERATION MAINTENANCE INSTRUCTION BULLETIN No. IOM-PS-DLCM-1101-Rev E Manufacturer’s of Quality Pumps, Controls and Systems Engineered Pump Operations 2883 Brighton-Henrietta Townline Road Rochester, New York 14623 Telephone: (585) 292-8000 Fax: (585) 424-5619 http://www.pulsa.com E-mail: pulsa@pulsa.
DLCM™ FACTORY SERVICE POLICY Your DLCM is a state of the art microprocessor based stroke length and motor speed control for use with PULSAR Diaphragm Metering Pumps. It includes extensive on-board diagnostics. If you are experiencing a problem with your DLCM, first review the diagnostic menu, then consult the trouble shooting guide.
Table of Contents 1. INTRODUCTION .....................................................................................................................................1 1.1 Description...............................................................................................................................1 1.2 DLCM Standard Features .......................................................................................................2 1.3 Options .......................................................
7.2 Menu .........................................................................................................................................41 7.2.1 Alarm, and Error messages ............................................................................................42 7.2.2 Diagnostics ......................................................................................................................43 7.2.3 Set Time and Date..........................................................................
DIAGNOSTIC FORM ......................................................................................................................................
Conventions For the remainder of this bulletin, the following Conventions are in effect. A WARNING DEFINES A CONDITION THAT COULD CAUSE DAMAGE TO BOTH THE EQUIPMENT AND THE PERSONNEL OPERATING IT. PAY CLOSE ATTENTION TO ANY WARNING. Notes are general information meant to make operating the equipment easier. Tips have been included within this bulletin to help the operator run the equipment in the most efficient manner possible.
1. Introduction The DLCM is an advanced microprocessor based controller designed for use with the PULSAR diaphragm metering pump. It controls the output of the pump by varying its stroke rate and the amount of fluid discharged with each stroke. It has many advanced features that allow it to operate in a wide variety of industrial environments. This instruction manual covers all standard features of the DLCM and where applicable, specific options. 1.
1.2 DLCM Standard Features i i i i i i i i i i i i i 1.3 DC Motor Speed Control with tachometer feedback Manual Stroke Length Control Keypad Back-lit 2 line 16 character LCD display NEMA 4X Enclosure Two 4-20mA inputs for independent speed and stroke length control One 4-20mA output MODBUS RS-485 Serial Communications 10-Year Battery Backed Clock Solid State Alarm Relay Level Input/Remote Start-Stop Inputs PULSAlarm Leak Detection Interface Diagnostics Options i Operating Voltage/Frequency 1.
2. Safety Considerations The DLCM is a sophisticated microprocessor based controller for use only with PULSAR diaphragm metering pumps. It yields tremendous control capacity – electrical, mechanical and (in conjunction with the PULSAR pump) hydraulic in nature. In consideration of SAFETY, you should be mindful of this relative to your safety, that of co-workers and of the process environment. Consider the following prior to the installation and operation of a DLCM controlled PULSAR metering pump. 2.
3. Equipment Inspection When you receive your order, check all equipment for: i Completeness against the shipping document / purchase order i For any evidence of shipping damage. Shortages or damage should be reported immediately to the carrier and your PULSAFEEDER representative. 4. Storage Instructions The DLCM can be successfully stored for extended periods. The key to this success is temperature and humidity control. 4.1 Storage Length 4.1.
5. Installation 5.1 Location Review the Safety section prior to installing the DLCM. It contains information required to properly install and operate the DLCM in an industrial environment. The site selected for the installation of your DLCM is largely dependent on that of the PULSAR metering pump. Review the PULSAR Installation Operation Maintenance Instruction Manual (Bulletin No. PMPIOM-96) provided with your PULSAR metering pump.
AVOID LOCATIONS WHERE THE DLCM WOULD BE SUBJECTED TO EXTREME COLD OR HEAT [LESS THAN –18° CELSIUS (0° FAHRENHEIT) OR GREATER THAN 40 ° CELSIUS (104 ° FAHRENHEIT)] OR DIRECT SUNLIGHT. FAILURE TO OBSERVE THIS WARNING COULD DAMAGE THE DLCM AND VOID ITS WARRANTY. 5.2 Installation Notes 1. The DLCM is a microprocessor based controller that uses electro-static sensitive CMOS components.
5.3.1 Getting Started The field wiring of the DLCM is accomplished through a rear access cover at the back of the unit – near the PULSAR gearbox and motor. The access panel is opened by removing the 4 retaining screws (Phillips head screw driver required). Removal reveals the Field Wiring Board (refer to Figure 2). Figure 2 – Accessing the Field Wiring Board The Field Wiring Access Cover has the Serial Number Tag on it. Keep the cover with the DLCM it was removed from.
5.3.2 Finding your way around the Field Wiring Board The electrical connections are segregated on the Field Wiring Board. The high voltage connections are on the right-half side while the low voltage connections are on the left. Refer to Figure 3, Field Wiring Board for specific connection and fuse locations. Figure 3.
5.4 High Voltage Connections There are only three high voltage connections to be made on the DLCM: supply power (J1), PULSAR motor load (J3), and Alarm Relay Load (J2). Only the supply power and PULSAR motor load connections are required. Refer to Figure 4 for connection location. Figure 4 – High Voltage Connections The Positive (+) and Negative (-) wires may not be labeled. Do not be concerned with polarity when hooking up the motor. It does not matter what direction the motor rotates. 5.4.
The DLCM with an attached pump motor and alarm load, should be connected to its own branch circuit. Size the supply wire and protective element according to local code requirements. Use 14 AWG, 105° C insulation wire or better. Attach the supply to the J1 terminal block labeled 'LINE POWER IN'. Make 3 connections: Neutral, Earth (ground) and Hot as labeled. Device 115VAC +/- 10% 50/60Hz Current Requirement (Amp) Device 230VAC +/- 10% 50/60Hz Current Requirement (Amp) DLCM 1A (1A Max.) DLCM .5A (.5A Max.
5.4.2 PULSAR Motor In most cases the DLCM is supplied with a factory installed DC motor. If a motor was not supplied, it is important to select the proper type. Refer to the chart below for acceptable DLCM motors (refer to Section 9 – Specifications for motor details): Motors must be permanent magnet, SCR drive rated DC motors. The DLCM cannot control motors with separate field windings. Part Number Developed H/P Armature Voltage Full Load Current Enclosure Type 90 Volts 90 Volts 90 Volts 2.5 amps 3.
5.4.3 Alarm Relay The Alarm Relay is an output that is configured by the operator. Refer to Section 7 – General Operation for specific instructions on how to activate the Alarm Relay. The Alarm Relay Load must not exceed 1 Amp at rated voltage. Connect the Alarm load to the J2 terminal block labeled 'ALARM RELAY OUT.' Use 22 AWG wire size or larger. Make three connections: Neutral, Earth (ground) and Hot as labeled. 5.5 Low Voltage Input Connections There are two types of Low Voltage inputs: Current (e.g.
5.5.1 Analog Inputs The DLCM can accept either one or two analog input signals. These signals ultimately control the pump’s flow. Analog Input #1 is used to control either the pump stroke and speed (refer to the note: below) or the pump stroke only. When Analog Input #2 is used, it controls motor speed only. The DLCM can operate using only Analog Input #1 to control both Stroke and Motor Speed.
5.5.2 Alarm Input The Alarm Dry Contact Input is designed to operate with the PULSAlarm leak detection option. It is software configurable to generate an alarm, activate the alarm relay and/or shut down the PULSAR motor. The input is internally powered – only a mechanical switch closure is required for activation. Use 0.32mm2 – 0.52mm2 (22-20 AWG) wire.
5.6 Low Voltage Output Connections There are two types of Low Voltage outputs: Analog (e.g., 4-20mA) and Transistor based Dry Contact. The Low Voltage Output connection block is labeled J5 'OUTPUT' (refer to Figure 6). It contains threepairs of outputs: Current, Alarm and Motor Status/Stroke. The Transistor based Dry Contact outputs are optically isolated. To achieve total isolation, they are not self powered. The external device must supply and detect a return voltage level (32VDC max).
5.6.1 Current Output The Current Output Channel can follow one of three signals: a) Calibrated flow b) Calibrated stroke length c) True motor speed It is calibrated to source current in the 0 to 20mA range (e.g., 4-20mA). The output can be calibrated for reverse acting and split ranging and control. Refer to Section 7 – General Operation: Calibration for further details. Current Output is used to control slave devices (e.g., DLCM's, ELMA's, PULSAMATICs, etc.) or to fulfill closed loop system requirements.
5.6.3 Run Status or Stroke Counter The Status output can be configured through software to indicate that the pump motor is on or to generate a pulse with every pump stroke (for use with an external stroke counter). The factory default for this output is to indicate Pump Motor Status. The Stoke output is not in phase with the pump stroke but has a 50% duty cycle (e.g., the output is ON for half of the stroke and OFF for the other half.). An opto-coupler is used to achieve total isolation of this output.
Figure 8 – Tachometer and Pump Motor Thermostat Connections To connect the Tachometer Input, connect the wire labeled VDC (typically brown) to the connection point labeled 1–TACH [+] on connector J-10 CONTROL. Connect the wire labeled TACH (typically blue) to the connection point labeled 2–TACH [-] on connector J-10 CONTROL. Make these connections using the 22 AWG wire provided with the Tachometer Sensor (refer to Figure 8).
5.8 Motor Thermostat The motor thermostat has been supplied as an equipment safety measure. This allows the DLCM pump motor to operate without the danger of overheating the motor windings. In the event that the internal temperature of the motor exceeds the motor manufacturer’s specification, the DLCM can be configured to: a) Turn the motor off. b) Sound an alarm. c) Restart the motor when the temperature lowers to a safe level.
Important Wiring Detail Slave to Slave When connecting two Slaves, the wiring is straight through. For example: Connect the transmit lines to the transmit lines and the receive lines to the receive lines (refer to the drawing below). Master to Slave When wiring between a Master and a Slave, the Transmit and Receive lines must be crossed. For example: Connect the transmit lines to the receive lines (refer to the drawing below).
5.10 Fuse Replacement Although Fuse replacement is not a part of normal installation, it is possible that fuse failure will result from improper wiring. The DLCM uses a total of 7 user replaceable fuses: 1 for the alarm relay output, 2 for each of the Current Input and Output Channels.
6. Start Up Instructions 6.1 Overview Once all electrical connections have been made, your DLCM is ready for Start-up. The following nine sections detail the procedures required to complete a DLCM start up. WHEN POWER IS SUPPLIED TO THE UNIT, LINE VOLTAGE IS PRESENT ON THE FIELD WIRING BOARD LOCATED AT THE BACK OF THE UNIT EVEN WHEN THE MOTOR IS OFF. DURING START-UP, IT IS NECESSARY TO RUN THE PUMP MOTOR. THIS WILL CAUSE FLUID TO DISCHARGE FROM THE PUMP.
6.1.1.1 Display: This is a 2 line by 16 character alpha-numeric Liquid Crystal Display (LCD) located above the keypad. It is back-lit with a yellow-green light source for easy viewing in dark areas. Its contrast can be adjusted by using the keypad. 6.1.1.2 Keypad: The Keypad is a sealed 9-button membrane style input device. It is easy to use and will guide you quickly to specific functions. Refer to Figure 13 to familiarize yourself with the function of each key before starting.
6.1.1.3 Manual Adjustment Knob: The manual adjustment knob is mechanically attached to the PULSAR stroke length adjustment mechanism. The DLCM uses the shaft attached to this knob to make its automatic adjustments. Visually, the knob is a good indication of what the DLCM is doing. For example, if the DLCM is increasing the pump stroke length – moving from 0 to 100% -- the knob will turn counter-clockwise until the desired position is achieved.
6.1.3 Confirm Correct Incoming Power Double check that the wiring access cover is on and tightened down. Whenever power is supplied to the DLCM, the display's back-lighting will 'glow' with a yellow-green light. The presence of this backlighting is an excellent indication that the DLCM's incoming power has been wired successfully and voltage is present. Characters may or may not appear on the display. This is normal and will be covered in the next section.
The keypad can be tested by depressing each key separately. Most, but not all keys will cause the text on the display to change. Do not be alarmed if a single key does not invoke a change to the display. This is normal. Different keys become active/inactive depending on the current operating mode . There are a number of functions that the DLCM performs (e.g., zero calibration) where the keypad has no effect.
Menu Factory Re-initialization: Use this procedure if the display and key pad appear to be functioning properly, but you suspect other problems with data corruption, erratic operation, etc. Factory Re-initialization can be found in the Configure Menu. Perform the following steps: 1. Apply power to the unit. Wait for the {SELF-TEST} display to disappear. The unit should display a standard power on screen. 2. Press [MENU]. The display will show the first menu item {DIAGNOSTICS}. 3. Press [DOWN].
6.1.7 Set Time and Date The clock on your DLCM has been activated at the factory, but you should set it to the local time and date of the installation site. Time and Date are set in the Configuration Menu. Below is an example that accepts some software default values: 1. From the Current Operating Mode Display, press [MENU]. The {–MENU– / DIAGNOSTICS-0} screen is displayed (refer to illustrations below). 2. Press [UP] one time. The {–MENU– / SET TIME AND DATE} screen is displayed. 3. Press [ENTER].
6.1.8 Flow Calibration (1-point). Your DLCM is factory calibrated at rated flow and pressure (1-point). Nevertheless, you should always perform a calibration with the PULSAR DLCM installed in your system. The only item required to calibrate your DLCM is a means to measure the output of the pump (i.e., calibration column, graduated cylinder, etc.). The following is a minimal procedure for performing a 1-point calibration. 1. Press [MOTOR] to start the motor (if the motor is not currently running). 2.
14. Pressing [ENTER] on the last position will cause the {CONFIRM CHANGE? / YES} screen to be displayed. Press [ENTER] to accept. Your 1-point calibration is now complete. Refer to Section7 – General Operation: Calibration, Pump Flow for more detailed instructions on how to perform DLCM calibration. 6.1.9 Analog Input Calibration. If you are not using the 0-20mA input to the DLCM for control, skip this section. To calibrate the Input Current you must first correctly wire an external signal source.
6. When the displayed value stabilizes, press [ENTER] to accept it. The {INPUT ANALOG MAX / 100% = XXmA} screen is displayed. Adjust your PLC to output a maximum signal (i.e., 20.0mA). Again, the DLCM display will update with the changing signal. 7. When the displayed value stabilizes, press [ENTER] to accept it. The {INPUT RATIO / 100% = XX.XmA} screen is displayed. 8. Press [ENTER] to accept the 100% Ratio setting. The {CONFIRM CHANGE? / YES} screen is displayed. 9. Press [ENTER].
7. General Operation This section covers the General Operation of the DLCM as it relates to software. It includes detailed instructions and example screens. The default values of the DLCM have been set at the factory. You can over-ride these settings to tune the DLCM to your particular needs. 7.1 General Operation Instructions 7.1.1 Pump Flow Calibration Pulsafeeder recommends performing at minimum a Two-Point flow calibration on every PULSAR DLCM installed.
You can "skip" a calibration point by entering a flow value of 0.0000. “Skipping” a point means that it will be omitted from the mathematical regression to establish the flow curve. Values which are less than 10% of the pumps’ rated output flow should be skipped. 4. Press [ENTER]. The {CALIBRATE ZERO? / YES} screen is displayed. CALIBRATE ZERO? YES Press [ENTER] If you are confident with the quality of your zero calibration, press [UP] and the {CALIBRATE ZERO? / NO} screen is displayed.
10. When you are ready, press [ENTER], which will start the pump motor for a period of 60 seconds. The screen will show a 60 second timer and display its count down toward 0 seconds. During this time, the pump is operating at the designated stroke length setting and 100% motor speed. TIMER: 60SEC 2.641718 G If you already know the displaced volume, you can bypass the 60 second timer by pressing [UP] and [DOWN] simultaneously. 11. At the end of 60 seconds, the pump motor will automatically turn off.
Change Constants Procedure 1. Navigate to the Change Constants menu by pressing [CAL]. The {CALIBRATE / PUMP FLOW} menu is displayed. Press [ENTER] twice. The {FLOW CALIBRATION / 1 POINT} menu is displayed. 2. Press [UP] until {FLOW CALIBRATION / CHANGE CONSTANTS} is displayed. FLOW CALIBRATION CHANGE CONSTANTS This option is used to set the slope and y-intercept in the equation that describes the linear calibration curve: y = ax + b. Where 'a' is the slope and 'b' is the y-intercept.
TUNE FLOW 60.0% 0.1000 G Using [UP] or [DOWN] enter the volume displaced for 1 minute of pump flow at the current motor speed and stroke length. The percentage value displayed represents the net pump output (stroke and motor speed). Press [ENTER]. The pump will now display the 5.775 GPH value at the 60.0% stroke setting. Internally, the DLCM has retained the slope calculated at the last calibration and has off-set the flow curve to satisfy the current reading requirement. 7.1.
Send the low analog signal to the DLCM (i.e., 0mA, 1mA, 4mA or 1 volt input to the J4 Current 1 terminals) from the signal generating device (e.g., PLC). Refer to Section 5-Installation: Low Voltage Input and Figure 5 for the wiring instructions. It is highly recommended that you use the actual signal the DLCM will be receiving during operation. The DLCM will display its interpretation of the received signal. Do not be alarmed if the signal does not match the instrument.
7.1.2.2 Analog Input #2 Calibration The following is a minimal procedure for calibrating Analog Input #2 if the 2 – Signals option is to be used. Input #2 controls the motor speed. For more information about the Analog Input signal, refer to Section 7.2.15 Analog Mode. 1. Press [CAL]. The {CALIBRATE / PUMP FLOW} screen is displayed. CALIBRATE PUMP FLOW 2. Press [UP] to scroll to the {CALIBRATE / ANALOG IN}. CALIBRATE ANALOG IN Press [ENTER] and the {CALIBRATE / STROKE POSITION} screen is displayed.
6. You are now ready to set the Signal Ratio. This option allows you to scale the Analog signal input to the pump output. Use this option only if you want to limit the range of operation of the pump (e.g., you want to limit the pump's output from 0 to 50% flow over the 4-20mA range). The display reads as follows: SPEED RATIO 50% = 19.8mA To use the ratio option, Press [UP] or [DOWN] to set the ratio value. Press [ENTER] to accept the setting.
7.1.4 Analog Output Signal Calibration Depending upon the option selected, {STROKE & SPEED} or {STROKE POSITION} or {MOTOR SPEED}, the DLCM will generate an analog output signal proportional to the selection. The signal can be calibrated to a standard range of 0-20mA, 4-20mA, 1-5mA, or 1-5 volts. It should be calibrated to the attached system. For more information on configuring the Analog Output Signal refer to Section 7.2.5 – Analog Output Set up.
7.2 Menu The default values of the DLCM Controller have been factory set, but you may want to configure the DLCM to meet your specific application. The [MENU] key activates the Configuration Menu system. This consists of 23 different sub-menus as shown below. Press [UP] or [DOWN] to scroll through the sub-menus. –MENU– DIAGNOSTICS–0 Press [UP] –MENU– SET TIME & DATE Press [UP] –MENU– ANALOG SIG FAIL Press [UP] –MENU– MODBUS SIG.
7.2.1 Alarm, and Error messages When an error occurs, the DLCM flashes Alarm and Error messages alternately with the standard display. If the error is catastrophic (e.g.; Tachometer Failure), the catastrophic error message will remain displayed until the problem is repaired. The following table gives an example of these messages and when you can expect them to be displayed.
7.2.2 Diagnostics The DLCM is supplied with a complete diagnostic menu. It will alert you if something has failed, the time and date of the failure, and allows you to clear the failure. Diagnostics procedure 1. Press [MENU]. In a normal condition, the display reads {–MENU– / DIAGNOSTICS-0}. -MENUDIAGNOSTICS-0 If a diagnostic failure was detected, the "DIAGNOSTICS - #" would appear. The '#' indicates the number of items that have failed. 2. Press [ENTER] and the first diagnostic sub-menu is displayed.
8. Press [UP] to scroll to the next sub-menu. The DLCM is equipped with a thermistor to monitor internal enclosure temperatures. If the temperature approaches its operating limit, (70°Celsius or 158°Fahrenheit) the DLCM will show a warning in this diagnostic sub-menu. DIAG MENU 7/11 DRIVE TEMP: OK DIAG MENU 7/11 DRIVE TEMP: FAIL - or - 9. Press [UP] to scroll to the next sub-menu. The DLCM is equipped with a clock that is backed by a 10year lithium battery.
12. Press [UP] to scroll to the next sub-menu. The total Stroke count of the pump is displayed here. To reset the Stroke count, press [ENTER] and you are prompted to {RESET COUNT?} or continue with the original count. DIAG MENU 11/11 STROKES: xxxxx Press [ENTER] RESET COUNT? YES In steps 11 and 12, if you select YES to either {RESET RUN TIME?} or {RESET COUNT?}, an {ARE YOU SURE?} prompt is displayed. Press [UP] and [ENTER] to confirm the change. 13.
3. The time will now be flashing with the cursor located under the hour position. Press [UP] or [DOWN] to adjust the time to your local time. 12 HR 2:31a MM/DD/YY 1/22/01 The cursor located under the digit in the time, indicates the character being changed. Once the hour is set, press [ENTER] and the cursor will move to the first digit in the minute setting. Press [UP] or [DOWN] to set the correct tens of minutes digit, then press [ENTER]. 12 HR 2:31a MM/DD/YY 1/22/01 4.
9. If "AUTO CHANGE" was selected in the previous step, the DLCM prompts you for the current day of the week. Press [UP] to scroll through the days of the week. Press [ENTER] to accept the current day of the week. DAY OF WEEK WEDNESDAY 10. The DLCM prompts you to accept the time and date programmed in the above referenced steps {CONFIRM CHANGE? / YES}. Press [ENTER] to accept. If you do not want to accept the new inputs, press [UP] to scroll to {NO} and press [ENTER]. CONFIRM CHANGE? YES 11.
2. The menu for having the DLCM freeze at the last signal is displayed. ANALOG SIG FAIL FREEZE @LAST SIG To accept this action, press [ENTER]. Go to step 3. If you desire a different action, press [UP]. a) The menu for having the DLCM shut the motor off is displayed. ANALOG SIG FAIL MOTOR OFF To accept this action, press [ENTER]. Go to step 3. If you desire a different action, press [UP]. b) The menu for having the DLCM go to a default signal (e.g.: 10%) is displayed.
If {MANUAL MODE} is selected, the DLCM will enter the manual mode as soon as the signal loss is detected. It will remain in Manual Mode until it is changed manually (press [MODE] on the front panel). The benefit of using a {RESTORE TO: / ANALOG MODE} is that it's totally automatic. If so programmed, the DLCM can shut itself down, wait for a signal to return, and then start itself back up. RESTORE TO: ANALOG MODE RESTORE TO: MANUAL MODE Press [UP] The {RESTORE TO:} setting applies to both channels (i.e.
5. The {ERROR MESSAGE / ENABLED} screen is displayed. ERROR MESSAGE ENABLED To accept this value, press [ENTER] and the {–MENU– / ANALOG SIG FAIL} screen is displayed. If you desire a different action, press either [UP] or [DOWN] to display the {ERROR MESSAGE / DISABLED} screen. ERROR MESSAGE DISABLED To accept this value, press [ENTER] and the {–MENU– / ANALOG SIG FAIL} screen is displayed. 7.2.
Here are some general guide lines: Increase this value as you increase the number of nodes on the network. − Increase this value as you decrease the communications baud rate. − Increase this value if the DLCM is a slave connected to a heavily loaded PC/PLC master. − Increase this value if you are in an electrically noisy environment. − Decrease this value if the DLCM is mission critical on a small (2-3 node) network. − Always use the default setting (2.5 seconds) as a starting point.
c) Go To Default 52
Press [UP] or [DOWN] to select the desired option. MODBUS FAIL #X FREEZE @LAST SIG Press [UP] MODBUS FAIL #X MOTOR OFF Press [UP] MODBUS FAIL #X GO TO DEFAULT Press [ENTER] to accept your setting. In the example screens above, at the end of the {MODBUS FAIL} line the last two characters are “#X”. In this case “X” will represent either “1” or “2” depending on which option (STROKE POSITION #1 or MOTOR SPEED #2) you are alarming for. 9.
The STROKE & SPEED output actually represents Calibrated Flow where 0% flow may not correlate to 0% stroke position. Press [ENTER] to accept this selection. You are then returned to the {–MENU– / ANALOG OUTPUT} screen. 2. If the desired mode is {STROKE POSITION}, press [UP], and the {STROKE POSITION} screen is displayed. ANALOG OUTPUT STROKE POSITION The STROKE output actually represents Calibrated Stroke Position where 0% Analog output may not correlate to the mechanical 0% stroke position.
7.2.8 End Point Set Up The End Point Set Up menu is a powerful tool that allows you to modify the performance of your DLCM. The term 'End Points' refers to the operating limits of the control elements. The DLCM has two control elements: the mechanical stroke adjustment and the motor speed adjustment. These elements have limits to their operation. The stroke adjustment can control from 0% stroke to 100% stroke. The motor speed adjustment can control from 5% speed (87.5 RPM) to 100% speed (1750 RPM).
At the 100% Adjustment (maximum value on the x-axis), the DLCM is operating at 100% stroke length and 100% motor speed. This results in a 100% flow output. As the Adjustment is decreased to 50% for example, the motor speed is adjusted to 50% (motor speed has 'Priority') and the stroke length remains at 100%. As we continue to decrease the Adjustment value, the DLCM continues to decrease motor speed until it reaches its minimum End Point value (10%).
Figure 15 – Typical End Point Example A better way to accomplish this is to modify the Maximum End Point for Stroke Length. If we change the Maximum End Point value to 50% stroke length, then the maximum pump output will be limited to 50% (50% Length and 100% motor speed yields 50% output). This improves the control characteristics as 5% to 35% flow range is now covered fully with motor speed.
End Point Set Up procedure 1. Press [MENU] to enter the {–MENU–} sub-system. Press [UP] or [DOWN] until {–MENU– / END POINT} is displayed. 2. Press [ENTER] to display the {STROKE END POINT / MINIMUM = XXX%} screen. STROKE END POINT MINIMUM = XXX% Press [UP] or [DOWN] to set the value. Press [ENTER] to accept your setting. 3. The {STROKE END POINT / MAXIMUM = XXX%} screen is displayed. STROKE END POINT MAXIMUM = XXX% Press [UP] or [DOWN] to set the value. Press [ENTER] to accept the setting. 4.
The leak sensor switch must be a dry contacting type. Refer to Section 5-Installation: Low Voltage Inputs for wiring information. If you select the 'motor off' option, the motor will have to be manually re-started if a Leak Detection Failure is detected (i.e., press [MOTOR] to start the pump motor). Leak Detection Failure Set Up Procedure 1. Press [MENU] to enter the { –MENU– } sub-system. Press [UP] or [DOWN] until {–MENU– / LEAK DETECTION} is displayed.
The level sensor or Start/Stop switch must be a dry contacting type. Refer to Section 5-Installation: Low Voltage Input Connections. If you select the 'motor off' option, the motor will have to be manually re-started when a Level Failure is detected (i.e., press [MOTOR] to start the pump motor). Level/Start-Stop Set Up Procedure 1. Press [MENU] to enter the { –MENU – } sub-system. Press [UP] or [DOWN] until { –MENU– / LEVEL SWITCH} screen is displayed.
10. If you want the PULSAR motor to stay on when a Drum Level is sensed, press [UP] to scroll to {NO}.and press [ENTER]. LEVEL SWITCH MOTOR OFF? NO 11. The display prompts you for the alarm relay status should the Drum Level Input trigger the alarm relay. LEVEL SWITCH ALARM RELAY? YES Press [ENTER] if you want the Alarm Relay to activate with the Drum Level Input. The display returns to the {–MENU– / LEVEL SWITCH} screen. 12.
7.2.11 Digital Output Set Up This sub-menu allows you to determine if the Digital Output is to be used as a counter for pump strokes, as a remote motor on/off indicator, or for Mode indication. For example: If the Digital Output is set up as {RUN/STOP STATUS}, and {DIGITAL OUTPUT / NORMALLY OPEN} it will activate when the motor is on and deactivate when the motor is off.
Digital Output Set Up Procedure 1. Press [MENU] once and then press [UP] or [DOWN] until the display reads {–MENU– / DIGITAL OUTPUT}. –MENU– DIGITAL OUTPUT 2. Press [DOWN]. The {DIGITAL OUTPUT / RUN/STOP STATUS} screen is displayed. DIGITAL OUTPUT RUN/STOP STATUS To use the DIGITAL OUTPUT function as a remote On/Off indication, press [ENTER]. 3. Press [ENTER] to continue to program the Digital Output sub-menu. The {DIGITAL OUTPUT / PUMP STROKE} screen is displayed.
7.2.12 Motor Thermostat Set Up This sub-menu allows you to configure the DLCM to interact with the pump motor thermostat. Depending on the application, it is possible for the fan cooled pump motor to run at low RPM and high torque, which degrades the effectiveness of the fan and can cause heat build up.
5. The {MOTOR THERMOSTAT / ALARM RELAY? YES} screen is displayed. MOTOR THERMOSTAT ALARM RELAY? YES Press [UP] to select between {YES} and {NO}. MOTOR THERMOSTAT ALARM RELAY? NO Press [ENTER] to accept the desired configuration. 6. If {MOTOR THERMOSTAT / MOTOR OFF? YES} is selected in step 4, the {RESTORE TO: / MOTOR ON} screen is displayed. RESTORE TO: MOTOR ON If you want the DLCM to turn the motor back on when the thermostat deactivates, set {RESTORE TO:} to {MOTOR ON}.
7.2.14 Power Failure Set Up This sub-menu allows you to configure the way the DLCM reacts when power is restored after a power outage. Additionally this sub-menu allows setting the action to take if improper voltage is applied. During the power up stage, the DLCM can either: − − Return to settings that were active when the pump lost power. Shut the motor off. A power outage is defined as the loss of power whenever the DLCM is not in the {MOTOR OFF} state. Power Failure Set Up Procedure 1.
7.2.15 Alarm Relay This sub-menu sets up the alarm relay outputs as normally open or normally closed. These screens configure both the high voltage output and low voltage switch (transistor). Alarm Relay Set Up Procedure 1. Press [MENU]. Press [UP] or [DOWN] until {–MENU– / ALARM RELAY} is displayed. Press [ENTER] to continue to program the Alarm Relay sub-menu. –MENU– ALARM RELAY 2. The alarm relay can be configured as {NORMALLY OPEN}.
Analog Mode Set Up Procedure 1. Press [MENU] once and then [UP] or [DOWN] until the screen {–MENU– / ANALOG MODE} is displayed. -MENUANALOG MODE Press [ENTER] to continue to program the Analog Mode sub-menu. 2. The {ANALOG MODE / ACTIVE} screen is displayed. ANALOG MODE ACTIVE Press [ENTER] to accept the default value. If you want the analog mode to be inactive and {ACTIVE} is displayed, press [UP] to change the display to {INACTIVE}. Press [ENTER] to accept your selection. Go to step 12.
Press [UP] or [DOWN] to set the {#1 SAMPLE SIZE}. The ‘#1’ refers to the signal that controls the STROKE adjustment. Increase the number of samples to smooth out a noisy input. Decrease the number of samples to cause the DLCM to track a rapidly changing signal more closely. Press [ENTER] to accept your selection. 9. The {#1 UPDATE EVERY / XXX SAMPLES} screen is displayed. #1 UPDATE EVERY XXX SAMPLES Press [UP] and [DOWN] to set the {#1 UPDATE EVERY / XXX SAMPLES}. Press [ENTER] to accept your selection.
MODBUS mode setup procedure: 2 To access the {MODBUS MODE} menu you must have Serial Comm enabled and the class set to Slave. Refer to the Serial Communications section later in this chapter. 1. Press [MENU]. Press [UP] or [DOWN] until the {–MENU– / MODBUS MODE} screen is displayed. –MENUMODBUS MODE Press [ENTER] to continue to program the MODBUS mode. The {MODBUS MODE / INACTIVE} screen is displayed.
7.2.17.2 {STROKE & SPEED / 2 – SIGNALS} Setup 8. With the {STROKE & SPEED / 1 – SIGNAL} screen displayed (refer to step 3), press [UP] to display the {STROKE & SPEED / 2 – SIGNALS} screen. STROKE & SPEED 2 – SIGNALS Press [ENTER] to accept your selection. The {STROKE RATIO / 100%} screen is displayed. 9. Use the {STROKE RATIO} setting to scale the serial input value to meet your needs. Press [UP] or [DOWN] to set the ratio value between 20% and 100%. STROKE RATIO 100% Press [ENTER] to accept your changes.
7.2.18 Security The DLCM has three modes of security: − − − None (OFF) Tamper Proof Calibration With Tamper Proof security active, the DLCM will lockout all of the front panel keys with the exception of [MOTOR]. To use any other key you will be prompted to enter a four digit Personal Identification Number (PIN). Successful entry of a PIN allows you to access all DLCM functions without PIN re-entry.
7. If the pin number is not correct or you don’t want the selected security level, press [UP] to change the display to {CONFIRM CHANGE? / NO} CONFIRM CHANGE? NO Press [ENTER] to reject the security changes. 8. The menu display returns to {–MENU– / SECURITY} screen. Remembering the PIN # you set, is probably one of the most important functions of setting security. 7.2.19 Number Format The meaning of the comma and decimal point can be interchanged in the number format menu.
7.2.20 Contrast Adjust The DLCM display contrast can be adjusted to a desired setting. Contrast Adjustment Procedure 1. Press [MENU]. Press [UP] or [DOWN] until the display reads {–MENU– / CONTRAST ADJUST}. Press [ENTER] to continue in the contrast adjust sub-menu. -MENUCONTRAST ADJUST 2. Press and hold [UP] to darken the characters on the display. Press and hold [DOWN] to lighten the characters.
If you are installing this DLCM into an existing network, retrieve the following parameters (bold indicates default DLCM values not network defaults). Communication Parameters Worksheet MODBUS Type: RTU ASCII Baud Rate: Data Parity: 300 Even Slave Address(es): 1 13 25 600 Odd 2 14 26 1200 None 3 15 27 4 16 28 2400 5 17 29 6 18 30 4800 7 19 31 9600 8 20 32 19,200 38,400 9 10 11 21 22 23 (Mark one or more.
Press [UP] or [DOWN] to set the parity type. DATA PARITY EVEN Press [UP] DATA PARITY ODD Press [UP] DATA PARITY NONE Press [ENTER] to accept. 6. The Class setting defines how the DLCM will operate in the network. If Class is set to Master, then the DLCM tells other equipment (e.g., other DLCM’s) that are configured as slaves what to do (e.g., adjust stroke percent to 50%). If the Class setting is set for Slave, then the DLCM is expecting a command from a Master unit.
To set or view Slaves manually, press [UP] or [DOWN]. As you do so, the display will show the address followed by the status, Address IDENTIFY SLAVES 1 NO Status In the example above, the device at address 1 is not identified as a Slave. Press [UP] or [DOWN] to scroll through the 32 addresses. To manually identify a Slave, press [UP] or [DOWN] to display the address of the Slave device. Press [ENTER]. Now press [UP] or [DOWN] to change the status of this device to {YES}.
7.2.22.1 Loopback Test Procedure The Loopback test is helpful in the identification of wiring errors. While this menu is displayed the DLCM transmits and expects to receive characters back. The display shows the percent (%) of successful characters exchanged. The Loopback test requires the installation of a Loopback device at the end of the cable segment under test.
7.2.23 Language All displayed text can be displayed in English, Spanish, French or German. Language Set Up Procedure 1. Press [MENU]. Press [UP] or [DOWN] until {–MENU– / LANGUAGE} is displayed. -MENULANGUAGE Press [ENTER] to continue through the language sub-menu. 2. The language type appears on the display. Press [UP] to scroll through the available languages.
Press [UP] to change the value to {YES}. Press [ENTER] to accept your selection. The following message is displayed: PLEASE WAIT 5. The first screen displayed during the Re-Set procedure prompts you to turn the motor on. TURN MOTOR ON TESTING ENCODER 6. Press [MOTOR].
7.4 Varying the Flow Rate - Manually When the DLCM is in Manual Mode, pump flow rate can be increased by pressing [UP]. The flow rate is decreased by pressing [DOWN]. The DLCM will display the corresponding value of the flow adjustment. If you attempt to adjust the DLCM’s hand-wheel while it is under power, the DLCM will re-adjust back to the position specified by its programming. The hand-wheel is for emergency manual override only. Refer to Section 12.1.
7.6.2 Repeating A Repeating Batch will start at a specified time and run for a specified duration. It will stop for a specified period of time and then repeat the run time. This will continue indefinitely (refer to Figure 22). Any of the three batches can be specified as one time only or repeating. Figure 22. Repeating Batch. 7.6.3 Overlapped The batches can also be overlapped (refer to Figure 23 below). Figure 23 – Overlapping Batch. When the batches are overlapped, the flow rates are NOT additive.
Batching system Set Up procedure: 1. Press [BATCH], to enter the batch set-up menu. 2. The display will come up as {BATCHES / ACTIVE} or {BATCHES / INACTIVE}. Press [UP] to change the batch system to {ACTIVE}. Setting the batch system to ACTIVE will cause any pre-configured batches that are scheduled to start at this time, to start immediately, so you might want to do this last. BATCHES ACTIVE BATCHES INACTIVE Press [UP] Press [ENTER] to continue on to the batch sub-menu. 3.
7. The cursor then moves to minutes field. Use [UP] or [DOWN] to scroll through the numbers 0-5. Set the first digit of the minute value one position at a time and press [ENTER] to accept it. BATCH #1 DURATION 12 HRS 30 MIN 8. The cursor then moves to the second digit of the minutes field. Use [UP] or [DOWN] to scroll through the numbers 0-9. Set the second digit of the minute value.
16. When the batch has operated for the specified time period, it will automatically shut off the pump's motor. 17. If this a One Time Only batch, the display will show the batch completed message and the operating mode will be set to manual. BATCH #1 COMPLETED PRESS ANY KEY Press any key to clear the display. MOTOR OFF 18. If this was a repeating batch, the display will return to {BATCH #X PENDING / HH:MM MM/DD/YY} and the DLCM will wait until its internal clock matches the displayed Time/Date.
8.
Diagram 2 – Serial Communications – RS 485 Connections 87
9. Specifications 9.1 Overview The DLCM controller for Pulsar Pumps is an upgrade from the DLC stroke length controller, which provides all of the same functions, but adds the capability of motor speed control using SCR control of the armature voltage applied to a permanent magnet DC motor. STROKE LENGTH CONTROL: Motor Speed Control: Combined Calibrated Flow: 0-100% control range. (Software programmable, 0% – 100% factory default) 0.1% resolution 10:1 turndown for accuracy specification.
Low Voltage Inputs (cont) Inputs PULSAlarm (Leak Detection) Digital Input Field Wiring Location J4 Pin 3 is + J4 Pin 4 is – J4 Pin 5 is + J4 Pin 6 is – Programmable as Level Input Or Remote Run / Stop Specification / Description Dry Contact. (Optically Isolated) – Do not apply powered signal. Isolation: Not isolated from Digital Input or Motor Thermostat, 500 volts from all other inputs, outputs and ground. May be software configured as Normally Open or Normally Closed.
High Voltage Inputs Inputs Field Wiring Location J1 Line Power: Specification / Description Factory configured to one of the following: 115VAC ±10%, 50/60 Hz, 10 Amp max (with 90 volt armature motors only) 230VAC ±10%, 50/60 Hz, 5 Amp max (with 180 volt armature motors only) Surge Protection: 7.4 Joules Software protected against Over/Under voltage.
10.
NUMBER FORMAT Separators Position CONTRAST X , XXX . XX (Comma / Decimal) PULSAR dependent (e.g., 9.99999, 0.999999, etc.) Factory set to match pumphead size. Refer to Factory Decimal Position Settings below.
FACTORY DECIMAL POSITION SETTINGS (cont.) RATED CAPACITY RANGE UNITS –MENU – / DECIMAL POSITION 0.00599999 1.58503 5.99999 5,999.99 0.0000999999 0.0264172 0.0999999 99.9999 to to to to to to to to 0.0599999 15.8503 59.9999 59,999.9 0.000999999 0.264172 0.999999 999.999 CMH GPH LPH CCH CMM GPM LPM CCM 0.999999 0.999999 0.999999 0.999999 0.999999 0.999999 0.999999 0.999999 0.000000001 0.000001 0.000001 0.001 0.00000000001 0.00000001 0.00000001 0.00001 to to to to to to to to 0.00599999 1.58503 5.
11. Trouble Shooting Guide 11.1 System Diagnostics Your DLCM contains extensive diagnostics that allow it to determine the source of common problems. If your DLCM is not operating properly, your first course of action should be to review the {DIAGNOSTICS} sub-menu. To access this menu from the standard operating mode follow this procedure (provided your user interface – keypad and display – is functioning): 1. Press [MOTOR] repeatedly until the display reads {MOTOR OFF}. 2.
Symptom DIAG 7/11 DRIVE TEMP: FAIL DIAG 8/11 BATTERY: FAIL DIAG 9/11 CIRCUIT: FAIL *RAM* DIAG 9/11 CIRCUIT: FAIL *EEPROM* DIAG 9/11 CIRCUIT: FAIL *MOTOR* MENU (DIAGNOSTICS) [cont] Probable Cause Possible Solution The DLCM internal temperature has exceeded the rating. The DLCM clock is backed by a Lithium Battery with a 10 year life. The Random Access Memory (RAM) on the mother board cannot be reliably read and/or written to.
PULSAR DC MOTOR Probable Cause Possible Solution Symptom Motor will not start. . Motor will not stop. Motor running too fast (run-away). Display may show {OVER SPEED! / SHUTDOWN!} Motor Cogging. Typically associated with running at extremely low speeds (<10%) No power supplied. Motor wired incorrectly. Supply power outside of specification. Motor key not pressed. Keypad problem. Remote Motor Switch is off Software did not initiate properly. Alarm or Level input set with option MOTOR OFF? set to YES.
ANALOG INPUT Possible Solution Symptom Probable Cause Not responding to Analog (mA) Input Input wired incorrectly. Input not wired to correct channel. Input fuse(s) blown. Not in Analog Operation Mode. Input not calibrated properly. Signal Failure Message Displayed with no signal loss Lo Analog Input point (e.g., 4.0mA) does not equate to 0% unit reading Break in wiring. Input outside of specification. Process fluctuates too rapidly: < 0.3mA and changing by more than 8.8mA/s Miss-Calibrated.
ALARM RELAY OUTPUT (Low Voltage J5) Probable Cause Possible Solution Symptom No Output Output wired incorrectly. External Device not powering output. Check wiring. Refer to Section 8 – Diagram 1 – DLCM Wiring Diagram. External device must supply voltage to dry contact. Review Section 7-General Operation: Leak Detection/Level Input Set-up/Alarm Relay. Alarm Options not set.
UNITS Symptom Probable Cause Possible Solution Units do not increment with change in %. Displayed units read - 000000 Unit not properly calibrated. Calibration beyond display resolution. Re-calibrate to value within display range. Change number format to give additional precision. Display is normal. Increase the stroke setting until the unit reads properly. Re-calibrate. Symptom No response to Master High pressure pump.
Failed to detect shaft rotation with the motor turned on The tachometer has failed. Remove power to the DLCM and pump motor. Turn the power back on and repeat the start up procedure. If the TACHOMETER FAILURE message is displayed again, remove all power from the DLCM. Refer to Section 5 – Installation: Tachometer Input for information on how to access the Tachometer Sensor wiring connections, located on the Field Wiring Board. Verify the condition of the TACHOMETER SENSOR connections (refer to Section 11.
ENCODER ERROR Possible Solution Symptom Probable Cause Message: {ENCODER ERROR / PRESS ENTER} displays during encoder test. Encoder defective. Internal Motor unable to turn adjustment knob. 11.1.1 Contact Technical Services Broken or jammed gears – contact Technical Services. Defective motor – contact Technical Services. Defective Drive circuits – contact Technical Services.
11.1.2 Tachometer Troubleshooting The DLCM utilizes the Tachometer sensor installed in the gear box to determine motor speed. This sensor detects the passage of 24 gear teeth per motor shaft revolution. If this device is not working properly, the DLCM will malfunction. This typically results in the display of the {TACHOMETER / FAILURE} or {OVER SPEED / SHUT-DOWN} message.
16. Slowly rotate the pump motor observing the high and low multi-meter readings. The output should now transition from a value below 0.35VDC when a gear tooth is near the end of the sensor to a value above 1.8VDC when it is away from it. If the meter reads a low value above 0.35 VDC or a high value below 1.8 VDC either the sensor or the interface circuitry is defective. . –– Do not proceed -Contact Technical Services –– 17. The multi-meter is reading a value that changes between below 0.35VDC and above 1.
12. Conversion (Manual to DLCM) Your PULSAR can be easily converted from a Manual Stroke Adjustment Mechanism to the DLCM. The DLCM effectively replaces the Manual Cover Assembly. Use the following procedure for conversion: 1. While running the pump motor, adjust the stroke setting to approximately 50%. 2. Disconnect the power supply going to the PULSAR drive motor. 3. Remove the six Phillips Head screws that hold the Manual Cover Assembly to the Eccentric Box (refer to Figure 24).
Figure 25 – DLCM/Eccentric mating components 7. Locate the face on the bottom of the DLCM that mates with the face of the lip of the eccentric box. The DLCM is oriented such that the control pad and display sit to the left of the pump's reagent head (as viewed standing in front of the reagent head looking at the motor). The conduit connections and access panel (with Serial Tag) reside at the rear of the pump near the gear box. 8.
13. General Repairs The DLCM contains no user-serviceable components within its main enclosure. In the un-likely event that your DLCM needs to be repaired, PULSAFEEDER has implemented a replacement program. Fill out the Diagnostic form included in the back of this manual, then contact PULSAFEEDER Customer Service at (585) 292-8000 to enter a replacement order Within 24-hours a DLCM will be shipped to you in a returnable container.
13.2 DLCM Replacement The following procedure assumes that you have received your replacement DLCM and are ready to perform the replacement. 1. If possible, activate the PULSAR motor and adjust the stroke setting in the range of 10 to 90%. Avoid 0 and 100% stroke settings on the PULSAR when replacing a DLCM. If necessary, use the Manual Adjustment knob. It should be easier to adjust the stroke manually in the (+) counter clockwise direction.
5. Remove the Tachometer Sensor Input Cable on the Field Wiring Board. a) Disconnect the wire (typically brown) connected to Pin 1 of J10. b) Disconnect the wire (typically blue) connected to Pin 2 of J10 6. Disconnect the Tachometer Sensor Conduit Assembly nut from the Tachometer Sensor Conduit Assembly and remove the Conduit Assembly and Tachometer Sensor wire from the DLCM housing.
7. Remove the four screws and Teflon Gaskets that retain the conduit adapter(refer to Figure 28). Figure 28 – Conduit Adapter Screw Removal When removing the DLCM in Step 8, the conduit adapter will stay with the wire and conduit. It plugs into the bottom of the DLCM. When lifting the DLCM off the Conduit Adapter, it may be necessary to have a second person hold the Adapter and associated conduit while the DLCM is 'un-plugged' from it. 8.
12. Note the position of the PULSAR adjustment shaft 'flats'. They mate with a slot in the DLCM drive coupling of the output shaft. The output shaft is connected to the adjustment knob. Familiarize yourself with these mating components prior to installation (refer to Figure 30). Figure 30 – DLCM/Eccentric Mating Components 13. Locate the face on the bottom of the DLCM that mates with the face of the lip of the gear box.
14. Orient the DLCM properly at a comfortable height above the pump and align the slot in the DLCM coupling with the 'flats' on the adjustment shaft by turning the Manual Control knob on the DLCM. Do not turn the PULSAR gear box adjustment shaft! 15. Lower the DLCM onto the gear box. Figure 32 – Positioning the DLCM It may be necessary to tip the DLCM slightly towards the motor to clear the Motor adapter.
Figure 33 – Shaft Alignment 112
16. Align the Conduit Adapter with the mating surface on the DLCM. A card edge in the DLCM housing will mate with an edge connector on the Conduit Adapter. Once properly aligned, the units will mate with moderate force (approximately 20 Newtons or 5 pounds of force). a) Install the four screws and Teflon Gaskets that hold the Conduit Adapter to the DLCM (refer to Figure 28).
14. PulsaNet Specification For simplicity, the DLC, DLCM, MLC, MLCM, NEMA-4X and NEMA-7 variations will ALL be referred to as the DLC unless otherwise noted. 14.1 Introduction The DLC PulsaNet communication system is an implementation of the industry standard MODBUS® protocol. The physical layer uses an RS-485 four-wire multi-drop scheme. Up to 32 slave units can be connected to a single master on the same set of wires.
14.3 MODBUS Messaging The MODBUS protocol was written for use with PLC’s. Programmable Logic Controllers (PLC’s) typically have relay outputs, digital inputs, analog inputs, analog outputs and general system settings (e.g., setpoints, alarm points, etc.).
14.5 Coils Coils are discrete, single bit outputs like the ALARM OUTPUT and DIGITAL OUTPUT. Notes: i i i i Read only. The coil information is packed as 8 coils per byte. Coils are accessible through Function Code 0x01. The requested value is returned in the least most significant bit. Function Read (0x01) Read (0x01) Address 0x0000 0x0001 DDE Ref. 000001 000002 Purpose Alarm Output Digital Output Data Format Bit(0x01 = On) Bit(0x01 = On) 14.
14.7 Input Registers These 16-bit input registers contain Analog (4-20mA) and Thermistor input readings. Notes: i The input information is returned as 16-bit integers. i Input Registers are accessible through Function Code 0x04. Function DDE Ref.
Function Address DDE Ref.
Function Address DDE Ref. Purpose Data Format Read (0x03) Read (0x03) Read (0x03) Read (0x03) Read (0x03) Read (0x03) Read (0x03) Write (0x06) Write Mult. (0x10) Read (0x03) Write (0x06) Write Mult. (0x10) Read (0x03) Write (0x06) Write Mult. (0x10) Read (0x03) Write (0x06) Write Mult. (0x10) Read (0x03) Write (0x06) Write Mult. (0x10) Read (0x03) Write (0x06) Write Mult. (0x10) Read (0x03) Read (0x03) Read (0x03) Write (0x06) Write Mult.
Notes: 1. There is one character per 16-bit value, which resides in the least significant byte. 2. The most significant byte contains the cursor status (0 = cursor off, 1 = cursor on). The least significant byte contains the cursor position offset (0-15 for the first line and 16-31 for the second). 3. Used to invoke Key-presses. The key value must be sent in the least significant byte (the most significant byte is unused). THIS REGISTER (0X0041 – KEY PRESS) MUST NOT BE USED FOR AUTOMATION PURPOSES.
12. Reading returns the current condition from RAM that can be either 0=Security Off, 1=Tamper Proof, 2=Calibration Settings. Writing while security is disabled, enables the chosen security type. NOTE that you should write the PIN # before enabling security here. 13. This is provided because you can only write items while in MODBUS MODE. 0=MANUAL MODE, 1=ANALOG MODE, 2=MODBUS MODE, 3=BATCH MODE. 14. Reading determines if we are currently performing a Find Zero Calibration.
SUPPORTED FUNCTION CODES and SUB-FUNCTION CODES 0x01 0x02 READ COIL STATUS (bits) READ INPUT STATUS (bits).
15. MODBUS Mode 15.1 Introduction The serial communications supplied with the DLC/M is similar in operation to that with the 4-20mA signal. The [MODE] key controls the current operating mode: MANUAL, ANALOG (4-20mA) or MODBUS. Serial communications can occur with the DLC/M regardless of the mode setting. Never the less, only when the DLC/M is in the MODBUS MODE can a value be written – changing the operation of the device. In any other mode, values can only be read.
16. Spare Parts User replaceable parts for the DLCM.
Diagnostic Form Pulsafeeder, Inc.
(Page 1 of 2) What area did the problem fall into: (Refer to Bulletin No.
(Page 2 of 2) 127
BULLETIN No. IOM-PS-DLCM-1101-Rev E Engineered Pump Operations 2883 Brighton-Henrietta Townline Road Rochester, New York 14623 Telephone: (585) 292-8000 Fax: (585) 424-5619 http: //www.pulsa.com E-mail: pulsa@pulsa.
