DP5000 Manual
Contents
1. pH ELECTRODE CX AN FLOW gt e g od J FLOW E UJ Optional zd Preamp and Cable LMI LMI PUMP f PUMP DP5000 pH CONTROLLER 2 E CI OO li _ 7 0 BASE ALKALAI ACID SOLUTION SOLUTION e cd EE C gt gt Figure Typical In Line Installation DP5000 E pH CONTROLLER 9 3 N A LMI LMI se PUMP PUMP Lir t a J E OPTIONAL P PREAMPLIFIER 7 INFLUENT BASE ALKALAI2. 66 0 15 EE ING COAL DOU OU e 15 4 5 Pump Timers and Solenoid Valve 1 17 E6 AOC INA E 20 NU OOO 21 2d dpELElIeettodeund 21 TIONS OO IN 21 OL Duro WI S SU ERE 22 IBI PO 23 Porri EO E E N 25 v eE X X4 O OOFFORem M 26 BXploded i193 2 1 0 Introduction The Liquitron 0075000 Series pH Controllers are designed for a variety of industrial pH applications including metal finishing water treatment printed circuit board manufacturing and waste treatment The DP5000 is a microprocessor based pH controller with a backlit customized display and tactile keypad for ease of programming The DP5000 allows independent programming of control methods ON OFF or PROPORTIONAL for acid Pump A or base Pump B dosage Independent high and low pH alarms may be set with activation of the Alarm relays A third relay output is available for activating a solenoid valve or other devices The controller is compatible with any pH electrode that generates a mV signal and allows incorporation of platinum 1000 W
3. ATC 16 8 Press again and the symbol will prompt you to put the probe in Buffer 2 Wait for the mV value to settle 2 Point t Press again This will accept the second calibration value and will display the mV pH and Slope result of the calibration 10 Press again to accept this calibration and exit calibration mode Press any other key to abort calibration For a single point calibration only one 1 buffer is used The theoretical value for pH 7 00 is used to complete the Calibration Curve If the calibration is unsuccessful slope lt 70 or offset 30 mV and ERROR CALIBRATE and E7 are displayed the calibration should be repeated or else the controller reverts to using the last successful calibration performed A slope of less than 70 indicates a dirty faulty probe or contaminated buffer 4 5 Pump Timers and Solenoid Valve Control Timers It is not possible to change timer values while in RUN mode Unit must be in the OFF mode to change values and settings Pump Run Time This timer is set to the maximum time the pump can be on If the timer is set to over 11 01 hours the pump will run continuously This timer is started when a pump is on and the pH value is outside the set points The controller will stop the pumps when the time reaches 0 and activate ALARMS The run time is reset each time the pH ent
4. ACID SOLUTION SOLUTION eee ELECTRODE BATCH TANK X aa Z Figure 3B Typical Batch Installation 3 2 Electrical Installation Electrical Connections To reduce the risk of electrical shock the control or metering pump must be plugged into a ground outlet with ratings conforming to the data on the control panel It must be connected to a good ground DO NOT USE ADAPTERS All wiring must conform to local electrical codes 7 8 y f INCORRECT CORRECT Electrical installation of the DP5000 Series pH Controllers consists of plugging the control module into a proper line outlet Based on model number the following voltages and receptacles are required DP5000 1A DP5000 3A DP5000 6A DP5000 01A DP5000 1B DP5000 3B DP5000 6B DP5000 01B 115 V 60 Hz 230 V 50 Hz 230 V 50 Hz 115 V 60 Hz USA Cord DIN Cord AUS NZ Cord No Cord DP5000 2A DP5000 5A DP5000 7A DP5000 02A DP5000 2B DP5000 5B DP5000 7B DP5000 02B 230 V 60Hz 230 V 50 Hz 230 V 50Hz 230 V 50 60Hz USA Cord UK Cord SWISS Cord No Cord Connect the pH adjustment pump s to the terminal strip for ON OFF control connect to receptacles directly for 115 V models or to cables for PROPORTIONAL control Connect the pH electrode to the BNC connector on the right side of the control module Take care not to twist or strain the wires If equipped connect the ATC cable 1000 Q at 32 F 0 C through the cable gl
5. 15V Fuse 1 4 0 ES 2 Ww 17 Xf Ww N Terminal Strip Wiring See Detail A 0 j 0 1 E i i 0 Tr Detail A TB1 TB2 TB3 TB4 10 Live 120V 230V 12 Output 12 SCREWDRIVER NC 8 4 20mA N Alarm 1 11 11 MEE Power 5V 9 8 NC 6 3 Temp 7 Neutral Alarm 2 8 8 6 NO 5 PumpB 7 4 put Temp 7 6 gt NC 4 dua 4 Solenoid 5 7 5 NO 3 5 Output i Fault 4 3 e Pump A NO 2 3 Low Level GND 3 2 e Remote 2 GND Pump B NO 1 off 2 e 1 T Flow GND 1 Figure 5 Terminal Strip 3 2 1 Terminal Board Signal Description Terminal blocks are TB1 TB4 from left to right and Pin 1 is at the bottom of each terminal block TB1 Terminal Strip TB1 Pin 1 Pin 3 Earth connection one for input power connection TB1 Pin 4 0110 9 Neutral power connection one for input power connection TB1 AC Mains live input TB2 Terminal Strip TBE POT Form A contact closed when Pump B base is ON TB PINA senmone Form A contact closed when Pump A acid is ON TB2 3 4 Form C contact activated 1f programmed when pH is within programmed limits solenoid pump TB2 5 6 Form C contact activated when Alarm Setpoint 2 exceeded powered output contacts TB2 8 For
6. 46 mm An 8 emitter dual LED type double row reflective backed backlight module will be used The light output color and reflective backing color will be high performance green EEPROM 10 year minimum 23 Pre amplifier Output Voltages Output Voltage Tolerance Current Output Optional Output _ 4 20 mA Load Accuracy Control Outputs Pump A Pump B Proportional Control Fault Control Inputs Remote ON OFF Flow Switch Low Level Input Aux spare Environmental Operating Temperature Enclosure Mechanical gt Control Board Terminal Power Board Option Board 24 Voltage SV 5 maximum 10 mA maximum 500 maximum resistance 0 2 mA The 4 20 mA isolated Opto Isolated Open Collector 2 mA Opto Isolated Open Collector 2 mA Opto Isolated 2 mA Opto Isolated 2 mA Opto Isolated 2 mA Opto Isolated 2 mA Printed Circuit Boards conformally coated 32 F to 122 F 0 C to 50 C IEC IP65 NEMA 4X Two printed circuit boards 3 if option installed Microcontroller amp Display Low Voltage Transformer fuses terminal blocks relays 4 20 mA output Low Voltage 8 0 Program Log For record keeping a program log is provided below Proportional ON OFF Proportional ON OFF Pump A Set Point Pump A Pulses Min Pump B Set Point Pump B Pulses Min Hysteresis 1 2 0 5 Hysteresis 2 77 I 0 5 Alarms Alarm 1 2 0 pH Alarm 2 1
7. 5 seconds HOLD 5 SEC Hold the CALIBRATE key down for five 5 seconds CALIBRATE will start flashing CALIBRATE 2 Press again 5 56 2 Point will start flashing Use the keys to toggle between 1 Point and 2 Point CALIBRATE 2 Point 3 Press again or MANUAL will start flashing Use the Ao keys to toggle between ATC and MANUAL temperature CALIBRATE CALIBRATE 4 Press again Use fo keys to program actual 2 Point HOLD 5 SEC temperature of buffer Manual It is not possible to program temperature if ATC is selected Automatic temperature probe detection can be over ridden in pH calibration mode If the ATC probe is not connected the controller will not detect it and only the MANUAL temperature option above will be displayed rer Press again The Buffer 1 value will start 2 Point HOLD 5 SEC flashing Use keys to program Buffer 1 pH Buffer 1 or leave at 7 0 6 Press again The Hj symbol will prompt you to 2 Point HOLD 5 SEC 7 7 put the probe in Buffer 1 Wait for the mV value to 1 Li Li u settle Manual T Press again This will accept the first calibration CALIBRATE value and will display the Buffer 2 pH Use Ao Y 2 Point 00 keys to program Buffer 2 or leave as desired
8. Min 4 Press Ao to increase decrease pump speed pulse min for set point 1 ACID Point 2 6 Press to increase decrease the pH for Set Point 2 17 5 pH ACID Pe Press ENEB again PUMP 8 Press Ao to increase decrease pump speed pulse min Point 2 for Set Point 2 90 Pulsas Min Pump Base Pump is programmed a similar way the user will be prompted to enter a pH value for Set Point 3 and a Pump Speed at Set Point 3 Set points 1 and 3 2 and 3 must be separated by 0 1 pH minimum 4 1 2 On Off Mode Set points 1 and 2 must be separated by 0 5 pH minimum If Point 3 is selected in the Advanced Features Menu Hysteresis Alarm 1 Alarm 2 2 5 P 12 5 U Pump B o h 6 0 65 75 80 Set Point Pump A Control Profile Controller must be in OFF mode to program changes e Hysteresis values can be set as low as 0 1 pH e Lowest setpoint value for pump B is IpH Highest setpoint value for pump B is 12 pH e Lowest setpoint value for pump A is 2 pH e Highest setpoint value for pump A is 13 pH For ON OFF controllers with relay outputs instead of pulse outputs each pump is programmed as follows ACID D ose Press 0 display Set Point Pump A set Point Press Ao to increase decrease pH Set Point ACID 3 Press to save programmed Set Point Pum
9. SEC MILTON ROY Figure 7 Keypad Keys ACID This key is used to set up the control profile for the acid dosing pump Holding the key for five 5 seconds A will allow priming of Pump A Factory setting 90 SPM BASE This key is used to set up the control profile for the base alkali dosing pump Holding key for five 5 seconds will allow priming of Pump B Factory setting 65 SPM PUMP B ALARMS This key is used to program the high and low alarm points and hysteresis ON OFF mode It also allows programming of the mA output when installed mA TIMERS This key is used to program run times for Pumps A and B delay times 1 and 2 for actuating and controlling E a solenoid valve when programmed ON in the advanced features menu This key also allows setting of the manual temperature and the controller response rate A pH If pump run time is over 11 01 hours the run time is disabled The pump will not be stopped and will run continuously CALIBRATE This key when pressed will display details of the last successful electrode calibration Holding this key for um e five 5 seconds will allow entry into a new calibration procedure single or two point DISPLAY Pressing this key will cause the display to alternate showing various settings Holding the key for five 5 seconds will allow entry to the advanced features menu RUN This key is used for starting an
10. a pH value of 12 0 Pump A is flashing indicating that the acid pump is in operation The pump will stop pumping after 46 35 minutes if set point is not reached For two 2 seconds in every eight 8 seconds the display shows pump speed in pulses minute The pulses minute displayed relates to the pump that is in operation hr ATC When the pH value exceeds the programmed pH alarm point 12 5 the ALARM flashes and the alarm relay is activated Throughout this manual the term pulse is used to describe the mechanical stroke of the pump as strokes per minute 5 4 1 1 Proportional Mode The unit is shipped preset at the factory for the PROPORTIONAL or ON OFF mode To change the unit to the opposite mode see Advanced Menu List Option 2 on page 20 Controller must be in OFF mode to program changes 1 2 2 0 12 5 Point 2 Pump A 90 Point 2 Pump B m a i 65 Point 3 Point 3 Optional Optional 30 A 20 Set Point 1l Set Point 1 Pump Pump A 14 Figure 10 Pump A Control Profile Pressing switches the mode back and forth from RUN to OFF The pH set points and pump speed pulses min can Pump A set Point 1 be changed only in the OFF mode 1 1 Press 2 Press to the increase decrease the pH value of Set Point for turning on Pump A Pump A set Point 1 Press again cL Pulses
11. 2 5 pH Hysteresis 0 5 pH mA Response Current Low 4 0 mA Signal Low 0 0 pH Current High 20 0 mA Signal High 14 0 pH Timers Pump A On Time 20 00 Min Pump B On Time 30 00 Min Sampling Time 00 10 Min Delay to Solenoid ON 9 00 Min o Solenoid On Time 20 00 Min Temperature 2e j Calibration Number of Points 2 Buffer Temperature Manual Buffer Temperature 24 Buffer 1 7 0 Buffer 2 10 0 25 9 0 Parts List 26 34691 Housing Machined Cord Power 115V NEMA 15 R DP5000 XA On O 33636 4 Pin Cable DP5000 XB Proportional 30749 N 28 N 6 8 9 25 28 10 0 Exploded View U S VERSION ONLY PROPORTIONAL CONTROL ON OFF CONTROL 27 201 Ivyland Road Ivyland PA 18974 USA TEL 215 293 0401 FAX 215 293 0445 www lmipumps com DP P EN E EE E e a7 qa k a E 9 e lt 2006 LMI Milton Roy All Rights Reserved Printed in USA Specifications subject to change without notice
12. 939 4 20mA Option Board Figure 6 Circuit Board 3 3 pH Adjustment Pump s There are two 2 versions of the DP5000 one 15 the ON OFF Output and the second is PROPORTIONAL Output The On Off Output DP5000 pH Controller will operate any pH adjustment pump s which operate on the same line voltage as the controller itself Combined continuous controlled load must not exceed 4A 115 V or 2A 230 V To ensure efficient control the pumps should be capable of delivering at least 150 of the maximum pumping requirement Install and calibrate the pumps according to the manufacturer s recommendations The Proportional Output DP5000 pH Controller will operate any LMI A9 A7 B9 B7 C9 C7 E7 or L7 pump or any other pump which operates by providing direct proportional response to a modulated pulse input signal The pumps must be set to the external control mode To ensure efficient control the pumps should be capable of delivering at least 150 of the maximum pumping requirement Install and calibrate the pumps according to the manufacturer s recommenda tions 3 4 Keypad and Display The DP5000 pH Controller menu allows the user to input all the variables necessary to customize the controller for the application The keypad is used for all programming see Figure 7 LIQUITRON DP5000 RUN EID PUMP 4 BASE PUMP B TIMERS f LIBRATE 2 61 gm HOLD 5
13. Manual Liquitron DP5000 Series pH Controller m For file reference please record the following data Model No Serial No Installation Date Installation Location When ordering replacement parts for your LMI Controller or accessory please include the complete Model Number and Serial Number of your unit 201 Ivyland Road Ivyland PA 18974 USA TEL 215 293 0401 FAX 215 293 0445 http www Imipumps com Replaces same of Rev F 4 01 1756 G 2 06 Contents 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 171100761 E E A 3 MMT RR RR 3 MAA SAMA OU E UIN PEN MINI IU UNUM EDU 4 3 1 Mounting the Electronic 1 83176 edocs are 4 22 DUM IU UN Md 6 3 2 1 Terminal Board Signal ICS Ci OMI 7 3 2 2 Field Wiring Instructions Optional 4 20 mA Output 8 DEDE PDB Ee i i 9 34A keypad Amm 9 10 2S 10 0711005770 mm 11 amp NOE ee AE N E E E E E E E E ET 12 AA E UU mcm 13 4 3 Calibration Viewing Last Calibration Data
14. Point CALIBRATE will be visible and the mV pH and slope of the previous calibration will be displayed The display will alternate between mV pH and C 2 Point indicates that the previous calibration was a two point calibration CALIBRATE 1 Point 59 1 1 Point indicates that the previous calibration was a one point mV pH calibration 4 4 New Calibration For two point calibration the default settings are Buffer 1 7 00 pH and Buffer 2 10 00 pH but these values may be changed Because it 15 not always possible to transfer the temperature probe from the process to the pH buffer automatic temperature probe detection can be switched off in pH calibration mode The calibration parameters temperature ATC automatic temperature compensation or manual buffer pH and one or two point calibration of the previous calibration are the initial values for the current calibration If the LMI temperature cable and probe are connected then the computer automatically selects and uses this ATC automatic temperature compensation during calibration If no temperature probe is connected then MANUAL will be selected during calibration You must manually measure the temperature of the process being controlled and IL enter that value here The unit must be placed in the OFF mode The unit cannot be calibrated in the Run mode Calibration e g 2 Point CALIBRATE 1Y gem EN
15. and below the BNC connector to the terminal strip You may optionally connect an alarm solenoid flow switch and low level switch You may also connect the mA connections with the option fitted The 5 V supply for electrode pre amplification is also accessed on the terminal strip There is a 500 maximum resistance for 4 20 mA option refer to Figures 4 and 5 Either option is available Proportional ON Off 10ft 3m 12in 304 8mm PH Electrode BNC Connector Output Wiring Power Cord for Options 6ft 1 8m Input Output d XK Wiring for Options LA HE 2 Q Power Cord Base Pump Output Acid Pump Output 6 Figure 4 Electrode and Pump Connections Voltage Selection Switch Fuse 2 o
16. automatic temperature compensation ATC elements Two point or single point pH calibrations may be performed Timer functions for pump Run time and solenoid Delay times can be programmed to operate a solenoid pump valve An Advanced Menu allows selection of special features such as a Point 3 inflection point for the control profiles of the acid or alkali pumps for finer control The DP5000 features continuous non volatile memory back up voltage selection pre amplifier outputs flow and level switch inputs as standard 4 20 mA recorder output is optional 2 0 Unpacking Your carton will contain the items shown in Figure 1 Please notify the carrier immediately if there are any signs of damage to the controller or its parts Contact your LMI Distributor if any of the parts are missing There is a number label on the inside cover of the unit for easy reference you should note the model and serial numbers on the front cover of this instruction manual DP5000 Quick Reference Guide Liquitron DP5000 Series pH Controller DP5000 pH Controller User Manual Figure 1 Unpacking Items 3 0 Installation Pre Installation a Be sure that the unit has a plug and voltage code compatible with the power source that you intend to use Environment The housing is corrosion an
17. d spray resistant but should not be subjected to excessive spray or ambient temperature over 122 F 50 C Never immerse the unit Installation The DP5000 Controller should be mounted on a solid stable surface pH adjustment pumps should be installed following the manufacturer s recommendations For installations requiring longer cables consult your distributor The electrode installation will vary depending on the process used In general the temperature electrode and pH electrode should be mounted together and placed far enough downstream from the source of pH adjusting solution that sufficient mixing may occur but close enough to eliminate hydraulic lag time of response Refer to the typical installation diagrams on the following page 3 1 Mounting the Electronic Enclosure The DP5000 control module 1s supplied with integral wall mounting flanges It should be hung with the display at eye level on a vibration free structure in a location where liquids will not be splashed on it All four 4 top mounting holes should be used for structural stability The control module requires the following clearances 10 254mm 4 102mm 8 203mm Figure 2 Minimum Clearances
18. d stopping run or edit the pumps and changing set points in the controller It changes the mode of the controller from RUN to OFF EDIT These keys are used to change values on the display a Pressing them a second time will unlock the keypad Wait five 5 seconds between locking and mA A ETE Simultaneously pressing these two 2 keys will lock the keypad to prevent casual tampering unlocking 4 0 OPERATION 4 1 Default Settings In the default mode as shipped from the factory without any extended features programmed in the menu the controller is setto operate two 2 dosing pumps towards a single desired pH region as defined by the set points It will do this in one of two ways ON OFF or PROPORTIONAL shown graphically below Alarm 1 Alarm 2 Hysteresis Point 2 Pump A Alarm 1 ARM Alarm 2 2 Pump B NE Desi red X 2 Region Set Point 1l Set Point 1 PumpB PumpA Set Point 0 2 5 6 5 7 5 10 5 4 0 14 pH Figure 8 ON OFF Control Figure 9 Proportional When the unit is plugged in the computer powers up and the display illuminates The display flashes the pH reading and OFF This indicates the pumps will not operate and the unit is in the OFF mode When the key 1s pressed the controller starts and switches into the RUN mode Example Proportional Controller This display shows
19. ections to get wet 6 0 Troubleshooting Troubleshooting and repair of the malfunctioning unit should only be attempted by qualified personnel using caution to ensure safety and limit unnecessary damage Should an error or alarm condition occur the controller will alert the operator by flashing an ERROR MESSAGE These messages are depicted on the following page with a brief explanation 21 6 1 Error Messages Turn system off to clear error message 1 LOWLEVEL SWITCH E2 FLOW SWITCH E3 ALARM 1 LOW pH PUMP B E4 ALARM 2 HIGH pH PUMP A E5 Pump B LOCKOUT E6 Pump A LOCKOUT E7 CALIBRATION ERROR Probe is out of Manufacturer s Limits E9 FAULTY DISCONNECTED PROBE 23 NJ 0 UI H gt UJ N r3 22 Power Requirements Inputs Outputs Output Type Keypad Material Actuation Force Travel Termination Connector Temperature Input Probe Circuit Accuracy Temperature Display Temperature Resolution pH Probe Input Accuracy Resolution Input pH Range Input Impedance Differential Input Impedance Common ESD Protection Relays __ Alarm Relays 2 Solenoid Valve Relay 1 Current Voltage Rating Contact Type Pump ON OFF Relay 2 ON OFF CONTROL Fuse LCD Display Operating Voltage Operating Temperature Viewing Area Backlight Memory Backup _______ Data Retention No Power 7 0 DP5000 Specificat
20. ers the desired set point region Solenoid Delay Pump Valve Time The Solenoid Valve Relay output may be activated when the pH is within the set points for the time specified by Delay 1 This may be used for system integration and for emptying a batch tank etc The Delay 1 Timer defines the period to allow pH and system parameters to settle The Delay 2 Timer ON time defines how long the valve will stay open When these Delay Timers are active pump dosing cannot take place but the DP5000 will monitor the pH The Delay 2 timer starts when the outputs are activated If the pH drifts outside of the set point and range the solenoid relay will be deactivated If a Delay 2 time goes below one hour then the display will change to minutes seconds from hours minutes 17 Setting Timers The unit must be in the OFF edit mode to change the timer settings For proportional mode pump run time must be set above 11 HR 01 Min to ensure continuous operation T rere Press the key to view the run time for Pump A 2 Use Ao to adjust to desired maximum run time The hr min will change to min sec automatically as the run time is reduced below one 1 hour RT Press the key to advance to run time for Pump B 4 Use Ao to adjust to desired maximum run time The hr min will change to min sec automatically as the ru
21. hing set point 4 0 4 2 Alarms Controller must be in OFF mode to program change Set Points Aem Press to display Alarm data 2 assent Press fo to program Alarm Point 1 low pH Pump B ALARMS 3 uon Press to save Alarm Point value and to move to Alarm Point 2 4 Press Ao to program Alarm Point 2 high pH Pump A ALARMS Press to save Alarm Point 2 value and to move to Alarm Hysteresis neni 6 Press f to program Alarm Hysteresis U 3 This 1s the point where the alarm turns off If the 4 20 mA option board is installed the following screens will appear If these do not appear and the 4 20 mA PCB is installed go to Section 4 6 Advanced Menu and program option 7 to 1 and option 6 to 1 CD Press to display current mA output value ALARMS 8 Press gs again to program the 4 20 mA output mA 9 Press Ao to select the pH value for Point 1 mA output Default is 4 mA 0 pH 20 mA 14 pH 10 Press again Press Ao to select the mA value at Point 1 11 Press again Press to select the pH value for Point 2 mA output ALARMS 12 Press again Press Ao to select the mA mA value at Point 2 Faint 1 0 0 21 mA Paint 2 eu 4 3 Calibration Viewing Last Calibration Data CALIBRATE Press the key once CALIBRATE 2
22. ions 115 VAC 15 60 Hz 230 VAC 15 50 Hz Voltage input selectable via a selector switch located on the I O PCB Flow Switch Remote ON OFF Spares All low voltage inputs active low i e the active state is when the switch is closed The switch must be capable of switching 2 mA at 15 VDC Pulse Pump A and B Alarm All low voltage outputs capable of switching 2 mA at 24 VDC The pulse output frequency range will be 0 100 per minute The pulse output active low The pulse width 100 ms in the active low state Opto lsolated NPN transistor open collector configuration Nine key membrane keypad with tactile response The switches are multiplexed 3 x 3 Polyester with a hard coat finish 2 6 N to 3 3 0 65 mm 6 way gold plated Berg clincher type 65801 035 The temperature input interfaces to a platinum 1000 ohm RTD probe PT1000 Platinum 1000 Q base resistance 0 9 F 0 57 32 F to 212 F 0 C to100 1 8 F 1 C 0 02 pH 500M Q probe ambient cycle 32 F to 113 F 0 C to 45 C 0 01 pH 0 14 pH 101 Q 107 Q 700 V Fuse protected Electromechanical 115 230 VAC 10 A 6 A 10A 115 VAC or 6A 230 VAC Normally open and normally closed contacts FORM C Change over relay 115 V 230 VAC 10 A 6 A NO ON OFF Relays are Fuse Protected FORM C Normally open relay 4 A 250 VAC time delay Anti surge 5V 32 F to 122 F 0 C to 50 C 1 2 x 1 8 inches 30 x
23. m C contact activated when Alarm Setpoint 1 exceeded powered output contacts TB3 Terminal Strip TI Pin F2 Opto isolated input low or short stops pumps OFF on display Remote OFF TB3 Pin3 4 Opto isolated output low when alarm condition exists TB3 5 6 Opto isolated output pulse train to drive Pump TB3 Pin 798 es Opto isolated output pulse train to drive Pump B TBS Pin9 10 Spare not programmed TB3 Pinll 12 Spare not programmed TB4 Terminal Strip TB4 1 2 Opto isolated input flow switch input add jumper if no flow switch 15 used TB4 3 4 Opto isolated input level switch input add jumper if level switch is used TB4 5 6 Spare not programmed TB4 Pin 7 8 Temperature input from platinum RTD probe polarity sensitive TB4 Pin 9 10 Power voltage source for preamp TB4 Pin 11 12 4 20 mA output proportional to pH programmable limits optional polarity sensitive 3 2 2 Field Wiring Instructions Typical US field installation would include a 6 ft 2 m AC cord wired and two 2 1 ft 30 cm AC receptacles ON OFF mode or two 2 10 ft 3 m pump drive cables PROPORTIONAL mode installed A BNC receptacle would be installed for the pH probe Connect the two 2 pumps appropriately Install the probe r
24. n time is reduced below one 1 hour Delay Timers are factory set in the deactivated mode The Delay 1 and Delay 2 Timers are activated deactivated in the Advanced Features Menu These screens will not display when the delay option is deactivated Solenoid Valve Control key to advance to Delay 1 time if activated Delay 1 is the wait time after pH enters the desired region before the Solenoid is activated key to advance to Delay 2 time if activated Delay 2 1s the Solenoid ON time If the pH should go out of the desired range during Delayl or Delay 2 the Solenoid cycle will terminate It will start again from zero when pH re enters the desired region If pH remains in the desired region the controller will enter OFF mode at the end of the Solenoid ON time The controller turns ON again in one minute and the cycle repeats 18 Press key to advance to Response Rate This is programmed in A pH units The smoothing of the input signal 1s determined by delta pH time The Response Rate 1s the time that the computer display takes before it updates the pH readings The following values can be programmed min sec 00 01 00 10 00 2000 30 04 00 In increments of 10 seconds When 00 01 is programmed the controller responds to a change in input in one 1 sec
25. ond If 00 10 is selected the controller responds to a change in input in ten 10 seconds 1 e the value displayed is the average of the 10 previous 1 second readings Examples The sampling time delta is 00 10 and the current reading 1s 2 00 pH When the pH input is increased instantaneously to 12 00 pH the display will respond as follows If the sampling was 00 01 seconds the response would be Seoonds 0 1 2 4 7 8 e o TIMERS Press the key to advance to set temperature This setting is relevant when no temperature probe 1000 Q platinum RTD is connected Display Key While in the Run Mode the key can be pressed once to display current parameters Each screen will come up for three 3 seconds and then returns to pH display or System Run automatically screens shown below are mV C and mA 3 Seconds Similarly the Pump Control Points be displayed while in the RUN Mode by pressing the Pump A or Pump B keys once Press and the following screens display Pump sat Point 1 Pump A Point 2 10 3 Seconds 10 0 1 5 Pulses Min g Pulses Min oH 4 6 Advanced Menu Holding the key for five 5 seconds accesses the Advanced Features Menu and allows these settings to be changed Press the DISPLAY MENU key for five 5 seconds while the controller is in the EDIT or OFF mode The first item displayed is the softwa
26. p A Set Point 4 Press fo to program A pH Hysteresis period for relay In this example Pump A will turn on at a pH of 8 0 set point A pH Pump A will turn off when pH drops to 7 5 Pump Base Pump is programmed in a similar way 12 In this example Pump will turn on at a pH of 3 5 set point A pH and will turn off when pH reaches 4 0 Hysteresis Dead Band 0 5 pH Without Dead Band or Pump Off Delay P OFF lt i ump N 4 Pump OFF T Pump E alk 1 2 4 6 8 10 3 5 4 4 5 5 Lower Set Point 77 Set Point s d oin It is highly recommended that the hysteresis pump off function be used to prevent relay chatter The function of the hysteresis is to prevent pump relay chattering It operates by allowing the pump to be turned on when the control point plus or minus the hysteresis value has been met but does not allow the pump to turn off until the control point has been met The chosen value will be used for both upper and lower set points The hysteresis or dead band designates how many pH units beyond set point the pump runs before turning off Any value from 0 to 14 00 1s acceptable If use of this function 1s undesirable set it to 0 Example Ifthe lower set point is pH 4 0 and the hysteresis has been set at 0 50 a falling pH will cause the pump to activate at pH 3 50 and it will run until reac
27. re revision Pressing Display Menw again cycles to the first option The first number is the option The second is the setting Use the A or to change the setting Control returns to Run 60 seconds after last keypress Run Edit key is On Off On Off Control Proportional Control and On Off Proportional Control 1 Point 3 Programming Enabled 0 Point 3 Programming Disabled Two point only Solenoid programmed to switch on after programmed time DELAY 1 and to switch Off after programmed time DELAY 2 Solenoid Disabled mA Enabled Option Board must be fitted mA Disabled Allows editing of 5 amp 6 Lockout 5 and 6 The Option Board 37830 is required for Option 6 20 5 0 Maintenance 5 1 pH Electrode and Cable The most frequently replaced part is the pH electrode not supplied with controller which will deteriorate with age Refillable electrodes should be checked for level frequently and replenished with filling solution as necessary An electrode may also fail because of e aging slow response to changing pH coatings over the glass bulb slow response to changing pH abrasion of the glass bulb shift in calibration chemical attack e breakage If you experience instability or lack of response check the electrode replace if necessary and recalibrate Follow manufacturer s recommendation for cleaning the electrode Take care not to damage input cables or allow the conn
28. un the cable back to the controller and attach to BNC receptacle If the probe is farther than 25 ft 7 6 m from the controller a pre amp may be desirable to reduce noise effects If this 15 the case run 5 V 5 V as required by your preamp Current draw must not be greater than 10 mA If a flow switch and or low level tank switch is available run wires to the controller entering through one of the spare cable ports Remove the appropriate jumper s and attach the external wires Polarity does not matter Wire size 20 22 is adequate Alarm relays 1 and 2 are provided to signal an out of tolerance condition externally These are Form C contacts providing a common a normally open and a normally closed connection These terminals provide power output A solenoid drive relay is provided that can be connected to drain a tank when the pH 1s within programmed limits This form C contact provides a common a normally open and a normally closed connection A delay can be programmed after initially entering this programmed zone to allow conditions to settle within the tank The duration of solenoid ON time is separately programmable Wire size 16 18 1s adequate These terminals provide output power main voltage The optional 4 20 mA PCB provides a fully programmable 4 20 mA output based on the pH readings The optional PCB plugs into the back of the computer pc board as shown in Figure 6 V VERS yooooooP G KY 93333
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