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WDS600 Sensor option PN

Summary of Contents for W600 Series

Page 1: ...ater Treatment Controller Instruction Manual Five Boynton Road Hopping Brook Park Holliston MA 01746 USA TEL 508 429 1110 FAX 508 429 7433 WEB www walchem com W A L C H E M IWAKI America Inc W600 Series Controllers ...

Page 2: ...24 months for electronics and 12 months for mechanical parts and electrodes from date of delivery from the factory or authorized distributor under normal use and service and otherwise when such equipment is used in accordance with instructions furnished by WALCHEM and for the purposes disclosed in writing at the time of purchase if any WALCHEM s liability under this warranty shall be limited to re...

Page 3: ...DI State 42 5 2 9 Flow Meter Contactor Type 43 5 2 10 Flow Meter Paddlewheel Type 43 5 3 Outputs Menu 44 5 3 1 Relay Any Control Mode 44 5 3 2 Relay On Off Control Mode 44 5 3 3 Relay Flow Timer Control Mode 45 5 3 4 Relay Bleed and Feed Control Mode 45 5 3 5 Relay Bleed then Feed Control Mode 46 5 3 6 Relay Percent Timer Control Mode 46 5 3 7 Relay Biocide Timer Control Mode 46 5 3 8 Relay Alarm ...

Page 4: ...Fuse Protecting Powered Relays 62 8 0 TROUBLESHOOTING 62 8 1 Calibration Failure 62 8 1 1 Contacting Conductivity Sensors 62 8 1 2 Electrodeless Conductivity Sensors 63 8 1 3 pH Sensors 63 8 1 4 ORP Sensors 63 8 1 5 Disinfection Sensors 64 8 1 6 Analog Inputs 64 8 1 7 Temperature Sensors 64 8 2 Alarm Messages 65 8 3 Procedure for Evaluation of Conductivity Electrode 68 8 4 Procedure for evaluation...

Page 5: ...t add lockout of bleed Intermittent sampling for boilers with proportional blowdown controlling on a trapped sample Always on unless interlocked Diagnostic Alarm triggered by High or Low sensor reading No Flow Relay output timeout Sensor error An option card with two isolated analog outputs may be installed to retransmit sensor input signals to a chart recorder datalogger PLC or other device They ...

Page 6: ...es with range and slope Accuracy mV 1 mV Accuracy ppm Varies with range and slope Temperature Analog 4 20 mA Range 23 to 500 F 5 to 260 C Range 0 to 22 mA Resolution 0 1 F 0 1 C Resolution 0 01 mA Accuracy 1 of reading Accuracy 0 5 of reading Electrodeless Conductivity Ranges Resolution Accuracy 500 12 000 µS cm 1 µS cm 0 01 mS cm 0 1 mS m 0 001 S m 1 ppm 1 of reading 3 000 40 000 µS cm 1 µS cm 0 ...

Page 7: ... closed Typical response time 2 seconds Devices supported Any isolated dry contact i e relay reed switch Types Interlock Low Speed Counter Type Digital Inputs Electrical Optically isolated and providing an electrically isolated 9V power with a nominal 2 3mA current when the digital input switch is closed 0 10 Hz 50 msec minimum width Devices supported Any device with isolated open drain open colle...

Page 8: ... 5 x 8 x 4 241 mm x 203 mm x 102 mm Display 320 x 240 pixel monochrome backlit display with touchscreen Operating Ambient Temp 4 to 131 F 20 to 55 C Storage Temperature 4 176 F 20 80 C 2 4 Variables and their Limits Low Limit High Limit Sensor input settings Alarm limits Low end of sensor range High end of sensor range Conductivity alarm dead band Low end of sensor range High end of sensor range C...

Page 9: ...Time Intermittent Sampling mode 0 seconds 3600 seconds Hold Time Intermittent Sampling mode 0 seconds 3600 seconds Maximum Blowdown Intermittent Sampling mode 0 seconds 3600 seconds Wait Time Intermittent Sampling mode 0 seconds 86 400 seconds Max Rate Pulse Proportional mode 10 pulses minute 480 pulses minute Minimum Output Pulse Proportional mode 0 100 Maximum Output Pulse Proportional mode 0 10...

Page 10: ... active sample of water is available and where the sensors can easily be removed for cleaning Position the sensor such that air bubbles will not be trapped within the sensing area Position the sensor where sediment or oil will not accumulate within the sensing area In Line Sensor Mounting In line mounted sensors must be situated so that the tee is always full and the sensors are never subjected to...

Page 11: ...h the measuring surfaces pointing down that is 5 degrees above the horizontal at a minimum The disinfection sensor should be placed as close to the controller as possible to a maximum distance of 1000 feet 300 m from the controller A junction box and shielded cable are available to extend the standard 20 foot 6 m length The sensor should be mounted such that the measuring surfaces will always stay...

Page 12: ...be boilers or Calculate from horsepower rating fire tube boilers HP x 34 5 lbs hr Example 100 HP 3450 lbs hr 2 Determine the Concentration Ratio BASED ON FEEDWATER A water treatment chemical specialist should determine the desired number of cycles of concentration This is the ratio of TDS in the boiler water to TDS in the feedwater Note that feedwater means the water that is fed to the boiler from...

Page 13: ...d Blowdown Rate of 383 33 lbs hr The maximum flow rate of the smallest flow control valve is 3250 lbs hr 3250 x 0 25 812 5 which is too high for continuous sampling Using an orifice the flow rate through the smallest diameter plate is 1275 lbs hr This is too high for continuous sampling 5 Determine the Orifice or Flow Control Valve Size for this Blowdown Rate Use the following graphs to select a f...

Page 14: ... between 22 26 AWG Shield should be terminated at the controller at the most convenient shield terminal CAUTION 1 There are live circuits inside the controller even when the power switch on the front panel is in the OFF position The front panel must never be opened before power to the controller is REMOVED If your controller is prewired it is supplied with an 8 foot 18 AWG power cord with USA styl...

Page 15: ...12 Figure 1 Conduit Wiring ...

Page 16: ...2 Typical Installation Cooling Tower HEAT EXCHANGER COOLING TOWER METERING PUMPS FLOW FLOW SWITCH SAMPLE VALVE 1 4 POLYPRO PANEL 19 5 x 11 75 NPTF NPTF FLOW CONDUCTIVITY ELECTRODE WEL pH ORP ELECTRODE 19 5 11 75 ...

Page 17: ...14 Figure 3 Typical Installation Cooling Tower Submersion ACID BASE SUBMERSION ELECTRODE pH PROBE AC POWER FLOW OUT FLOW IN 1 2 3 4 5 6 ...

Page 18: ...Motorized Ball or Solenoid Valve Flow Control Valve or Orifice Union CONDUCTIVITY ELECTRODE TEE 2 ft minimum 1 to 3 ft maximum 10 ft max with minimal valves elbows unions To Drain Skimmer Blowdown Line 3 4 Min up to Electrode Full Port Block Valve Manual Blowdown Normally Closed Motorized Ball or Solenoid Valve Flow Control Valve or Orifice Union CONDUCTIVITY ELECTRODE TEE Flow Control Valve or Or...

Page 19: ...nstallation Disinfection Sensor ISOLATION VALVE NORMALLY OPEN RECIRCULATION PUMP 1 2 3 4 5 6 ROTAMETER 30 100 LPH PROCESS WATER SAMPLE RETURN 1 ATMOSPHERE MAXIMUM FLOW SWITCH SENSOR FLOW CELL FLOW CONTROL VALVE SAMPLE VALVE ...

Page 20: ...PPLY EARTH GROUND TERMINAL BLOCK FUSE RELAY OUTPUT TERMINAL BLOCK NEUTRAL TERMINAL BLOCK AC POWER TERMINAL BLOCK SENSOR DIGITAL INPUT AND ANALOG OUTPUT TERMINAL BLOCKS POWER RELAY BOARD I O SLOT 2 OPTION BOARD I O SLOT 1 BOARD USB PORT DUAL ANALOG OUTPUT OPTION ETHERNET OPTION ...

Page 21: ... 7 8 9 10 11 12 13 14 15 16 17 18 TB3 TB2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 TB1 TB4 TB6 TB5 TB7 N N N N N N R1 R2 R3 R4 R5 R6 POWER SWITCH FUSE SHIELD TEMP WHT TEMP GRN SENSOR LABEL RCV BLACK XMT RED ...

Page 22: ...3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 TB3 TB2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 TB1 TB4 TB6 TB5 TB7 N N N N N N R1 R2 R3 R4 R5 R6 POWER SWITCH FUSE SHIELD TEMP TEMP SENSOR LABEL RCV XMT RCV XMT ...

Page 23: ... 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 TB1 TB4 TB6 TB5 TB7 N N N N N N R1 R2 R3 R4 R5 R6 POWER SWITCH FUSE pH ORP electrode TEMP WHT GRN TEMP GRN WHT IN WHT ORN IN ORN WHT 5V BLU WHT 5V WHT BLU SENSOR LABEL SHIELD Optional Temperature Compensation ...

Page 24: ... 12 13 14 15 16 17 18 TB3 TB2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 TB1 TB4 TB6 TB5 TB7 N N N N N N R1 R2 R3 R4 R5 R6 POWER SWITCH FUSE IN WHT IN GRN 5V RED 5V BLK SENSOR LABEL SHIELD ...

Page 25: ... Transmitter XMTR SHIELD XMTR XMTR XMTR XMTR AI 1 2 24V SHIELD XMTR SHIELD 24V XMTR COM SHIELD 24V 24V TB Pin Power RED Ground BLK BRN ORN Shield Little Dipper 1 2 3 4 5 6 7 8 9 10 11 12 2 Wire Loop 2 Wire Powered 3 Wire 4 Wire 24V XMTR SHIELD SHIELD SHIELD SHIELD XMTR XMTR COM XMTR XMTR 24V 24V 24V Type of Transmitter XMTR SHIELD XMTR XMTR XMTR XMTR AI 1 2 24V SHIELD XMTR SHIELD 24V XMTR COM SHIE...

Page 26: ... 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 TB1 TB4 TB6 TB5 TB7 N N N N N N R1 R2 R3 R4 R5 R6 POWER SWITCH FUSE SAFETY COVER LABEL FLOW SWITCH Contact Closure Polarity not critical Reed Switch FLOW METER Polarity not Critical Hall Effect FLOW METER SIGNAL IN POWER 9V TB 3 SHOWN ...

Page 27: ...ORIZED BALL VALVE IF MOTORIZED BALL VALVE PUMP PUMP TB5 TO TB4 TO TB4 ALARM TO TB4 WHT 120V BLU 240V WHT 120V BLU 240V WHT 120V BLU 240V WHT 120V BLU 240V BLK 120V BRN 240V BLK 120V BRN 240V BLK 120V BRN 240V BLK 120V BRN 240V GRN 120V GRN YEL 240V GRN 120V GRN YEL 240V GRN 120V GRN YEL 240V NO NC NO NC NO NC NO NC NO NC NO NC WHT 120V BLU 240V BLK 120V BRN 240V TO TB4 GRN 120V GRN YEL 240V Power ...

Page 28: ...5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 TB1 TB4 TB7 POWER SWITCH FUSE BLK 120V BRN 240V WHT 120V BLU 240V GRN 120V GRN YEL 240V BLK 120V BRN 240V GRN 120V GRN YEL 240V WHT 120V BLU 240V GRN 120V GRN YEL 240V WHT 120V BLU 240V BLK 120V BRN 240V GRN 120V GRN YEL 240V WHT 120V BLU 240V BLK 120V BRN 240V BLK 120V BRN 240V Power Supply 115 VAC or 230 VAC TB7 GR...

Page 29: ... 240V GRN 120V GRN YEL 240V WHT 120V BLU 240V BLK 120V BRN 240V Power Supply 115 VAC or 230 VAC TB7 GRN 120V GRN YEL 240V BLK 120V BRN 240V WHT 120V BLU 240V TB6 TB5 R1 R2 R3 R4 R5 R6 TB3 TB2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 TB1 TB4 TB7 POWER SWITCH FUSE External AC Power External AC Power ...

Page 30: ...er Supply 115 VAC or 230 VAC TB7 GRN 120V GRN YEL 240V BLK 120V BRN 240V WHT 120V BLU 240V TB6 TB5 R1 R2 R3 R4 R5 R6 TB3 TB2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 TB1 TB4 TB7 POWER SWITCH FUSE External AC Power External AC Power External AC Power External AC Power ALARM ...

Page 31: ...7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 TB1 TB4 TB6 TB5 TB7 N N N N N N R1 R2 R3 R4 R5 R6 POWER SWITCH FUSE Chart Recorder 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 TB1 SAFETY LABEL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 TB2 Chart Recorder SHIELD SHIELD ...

Page 32: ...f the input readings will bring up that input s Details screen where you can access calibration and setting menus Arrow icons page up or down to additional inputs if more than three are configured to be viewed Touching the Menu icon brings up the Main Menu screen Easy to understand Icons on the bottom of the screens and areas within the screen that are outlined in black bring up new screens These ...

Page 33: ...gs up the calibration menu Cancel icon aborts a calibration or setting change The Page Down icon scrolls down to a new page in a list of options The Page Up icon scrolls up to a new page in a list of options The Back Return icon returns the display to the previous screen The Make Character Higher icon is used when making an alphanumeric entry The Make Character Lower icon is used when making an al...

Page 34: ...or icon to the character to be changed and change it using either the Make Character Higher or Lower icons Upper case and lower case letter numbers a blank space period plus and minus symbols are available Move the cursor to the right and modify each character Once the word is correct use the Enter icon to store the new value into memory or use the Cancel icon to leave the word at its previous val...

Page 35: ... Configuration Settings icon Touch Global Settings Touch the Scroll Down icon until the English word Language is displayed and then touch it Touch the Scroll Down icon until your language is displayed and touch it Touch the Confirm icon to change all menus to your language Set date if necessary Touch the Scroll Up or Down icon until Date is displayed and then touch it Touch the Move Cursor icon to...

Page 36: ...33 Overview of the menu structure ...

Page 37: ...34 ...

Page 38: ...witch is connected select No Sensor Set the state that will possibly interlock control outputs refer to the Outputs settings to program which outputs if any will be interlocked by the switch Set the state if any that will result in an alarm If a contacting head or paddlewheel flow meter is connected D1 through D6 whichever one has the device connected to it should be set to that type if no flow me...

Page 39: ...he controller down simply turn off the power Programming remains in memory It is important that the pH ORP electrode remains wet If the shutdown is expected for any longer than a day and it is possible for the electrode to dry out remove the electrode from the tee and store it in pH 4 buffer or cooling tower water Take care to avoid freezing temperatures when storing the pH ORP electrodes to avoid...

Page 40: ...six active alarms the Page Down icon will be shown touch this icon to bring up the next page of alarms Touch the Main Menu icon to go back to the previous screen 5 2 Inputs Menu Touch the Inputs icon to view a list of all sensor and digital inputs The Page Down icon pages down the list of inputs the Page Up icon pages up the list of inputs the Main Menu icon brings back the previous screen Touch t...

Page 41: ...to put the new calibration in memory If failed you may retry the calibration or cancel Refer to Section 8 to troubleshoot a calibration failure Resume Control Replace the sensor in the process and touch Confirm when ready to resume control Two Point Buffer Calibration Cal Disables Control Touch Confirm to continue or Cancel to abort Buffer Temperature only appears if no temperature sensor is detec...

Page 42: ... process value Put the transmitter back into normal measurement mode if necessary and touch Confirm when ready to resume control Two Point Analog Calibration OK to disable control Touch Confirm to continue or Cancel to abort Input Value Enter the mA value that the transmitter will be sending Touch Confirm to continue or Cancel to abort Please set input signal to specified value Make sure that the ...

Page 43: ...ensor to be connected 5 2 2 Electrodeless Conductivity Settings Touch the Settings icon to view or change the settings related to the sensor Alarms Low Low Low High and High High Alarms limits may be set Deadband This is the Alarm Deadband For example if the High Alarm is 3000 and the deadband is 10 the alarm will activate at 3000 and deactivate at 2990 Default Temp If the temperature signal is lo...

Page 44: ... the controller will use the Default Temp setting for temperature compensation Cable Length The controller automatically compensates for errors in the reading caused by varying the length of the cable Gauge The cable length compensation depends upon the gauge of wire used to extend the cable Name The name used to identify the sensor may be changed Type Select the type of sensor to be connected 5 2...

Page 45: ... 90 4 mA Value Enter the value that corresponds to a 4 mA output signal from the transmitter 20 mA Value Enter the value that corresponds to a 20 mA output signal from the transmitter Units Select the units of measure for the transmitter Name The name used to identify the transmitter may be changed Type Select the type of sensor to be connected The choice of Analog Input is only available if that ...

Page 46: ...ed Type Select the type of sensor to be connected to the digital input channel 5 2 10 Flow Meter Paddlewheel Type Input Details The details for this type of input include the current flow rate total volume accumulated through the flow meter alarms and the current type of input setting Settings Touch the Settings icon to view or change the settings related to the sensor Totalizer Alarm A high limit...

Page 47: ...set Output Timeout menu is entered Reset Output Timeout Enter this menu to clear an Output Timeout alarm and allow the relay to control the process again Interlock Channels Select the relays and digital inputs that will interlock this relay Activate With Channels Select the relays and digital inputs that will activate this relay Minimum Relay Cycle Enter the number of seconds that will be minimum ...

Page 48: ...Feed Duration Enter the amount of time for the relay to activate for once the accumulated volume through the water meter has been reached Accumulated Volume Enter the volume of water to pass through the water meter required to trigger the chemical feed Input Select the input to be used to control this output 5 3 4 Relay Bleed and Feed Control Mode ONLY AVAILABLE IF HVAC MODES ARE ENABLED IN CONFIG...

Page 49: ...con to view or change the settings related to the relay Sample Period Enter the duration of the sample period Feed Percentage Enter the of the sample period time to use for the feed relay activation time 5 3 7 Relay Biocide Timer Control Mode ONLY AVAILABLE IF HVAC MODES ARE ENABLED IN CONFIG MENU GLOBAL SETTINGS Basic Biocide Operation When a biocide event triggers the algorithm will first preble...

Page 50: ...t start time plus duration If the activate with condition continues after the end of the biocide feed time the relay remains activated Alarms An Event Skipped alarm is set when a second biocide event occurs while one event is still running either in prebleed biocide add or post biocide add lockout An Event Skipped alarm is also set when the biocide add relay never turns on during a biocide add bec...

Page 51: ... output is turned on at the same time of day for the same amount of time and except for the Daily cycle on the same day of the week Event 1 Week If the Event Repetition is Daily or 1 Week select N A For longer cycles select the week during which the event will occur Event 1 Day If the Event Repetition is Daily select N A For longer cycles select the day of the week during which the event will occu...

Page 52: ...e deviation from the set point The relay goes through a sequence of activation deactivation as described below The intended purpose of this algorithm is boiler blowdown A sample cannot be supplied to the sensor continuously in many boilers because a recirculating loop is not possible and it would be a waste of hot water to constantly run a sample to a drain A valve is opened intermittently to supp...

Page 53: ...me Enter the time to wait to sample the water again once the captured sample is below set point Cond Input Select the sensor to be used by this relay 5 3 11 Relay or Analog Output Manual Mode Output Details The details for this type of output include the relay on off state or analog output HOA mode or Interlock status accumulated on time alarms related to this output and the current control mode s...

Page 54: ...ll activate Set point 2 Enter the second sensor process value at which the relay will activate Deadband Enter the sensor process value away from the set point at which the relay will deactivate Input Select the sensor to be used by this relay Direction Select the control direction In Range will activate the relay when the input reading is between the two set points Out of Range will activate the r...

Page 55: ...ccumulated on time alarms related to this output and the current control mode setting The current week number is displayed even if there is no multi week repetition event programmed Cycle Time shows the time counting down of the currently active part of the timer cycle Settings Touch the Settings icon to view or change the settings related to the relay Event 1 Repetition Select the time cycle to r...

Page 56: ... time alarms related to this output and the current control mode setting Settings Touch the Settings icon to view or change the settings related to the relay Set point Enter the sensor process value at which the output will be the programmed minimum Proportional Band Enter the sensor process value away from the set point at which the output will be the programmed maximum Minimum Output Enter the l...

Page 57: ...rol mode will replace the Biocide timer Language Select the language the software will use 5 4 2 Security Settings Controller Log Out When Security is Enabled and after the password has been entered the controller requires immediate use of a password to calibrate or change settings Once finished making changes log out to prevent unauthorized changes by someone else If not manually logged out the c...

Page 58: ... VTouch connection Alarms Displays any active Network related alarms DHCP Status Displays if the connection to the LAN using DHCP was successful or not Controller IP Address Displays the IP address that the controller is currently using Network Netmask Displays the netmask address that the controller is currently using Network Gateway Displays the gateway address that the controller is currently u...

Page 59: ...rt System Log Save the System Log file to a USB stick This records hardware changes software upgrades automatic calibrations power loss system level issues etc Export User Config File The User Configuration file contains all settings for the controller Enter this menu to save the controller s settings to an USB stick for using later to restore settings to this controller or to program additional c...

Page 60: ...play Board Displays the revision number of the display board AO Board Displays the revision number of the analog output board Battery Power Displays the VDC output of the battery that is used to hold the date and time The acceptable range is 2 4 3 2 VDC Internal Temp 1 Displays the temperature of the main processor The acceptable range is 10 to 65 C Internal Temp 2 Displays the temperature of the ...

Page 61: ...high or low at that time Touching the or the icons will redraw the graph forward or backwards in time in increments of one time range It can only go back in time to the point where the data log file used to generate the graph starts Changing the time frame while in the graph view after moving back in time shows data from that past time Exiting the graph menu and returning to the graph menu moves b...

Page 62: ...hernet port of a computer or to the VTouch account management system server 6 1 Connecting to a LAN Connect the controller s network card to the LAN using a CAT5 cable with RJ45 connector 6 1 1 Using DHCP Using the touchscreen from the Main menu touch Config then touch Network Settings then touch DHCP Setting Touch Enabled then the Confirm icon After a power cycle of the controller return to Confi...

Page 63: ...any computer that is directly connected to the controller or is on the same network as the controller open a browser and type the numeric Controller IP address in the web page address field The login screen should quickly appear The default user name is admin and the default password is 5555 The default View Only user name is user and default password is 1111 These can and should be changed in the...

Page 64: ...ith the reading in step 1 above If the variance in readings is greater than 5 increase the frequency of electrode cleaning If there is less than 5 change in the reading the electrode was not dirty and can be cleaned less often Cleaning Procedure The electrode can normally be cleaned using a cloth or paper towel and a mild detergent If coated with scale clean with a dilute 5 solution of hydrochlori...

Page 65: ...r of a malfunctioning controller should only be attempted by qualified personnel using caution to ensure safety and limit unnecessary further damage Contact the factory 8 1 Calibration Failure Calibrations will fail if the adjustments to the reading are outside of the normal range for a properly functioning system Refer to the instruction manual for the specific sensor being used for further infor...

Page 66: ...alibration will fail if the adjustment to the gain is outside of 0 2 to 1 2 or if the calculated offset is outside of 60 to 60 Possible Cause Corrective Action Dirty electrode Clean electrode Improper wiring of sensor to controller Correct wiring Incorrect temperature reading or setting Ensure that the temperature is accurate Incorrect cable length or wire gauge setting Set to the correct values F...

Page 67: ...embrane cap with electrolyte Replace membrane cap if it will not hold solution Improper wiring of sensor to controller Correct wiring Faulty sensor Replace sensor Faulty analysis equipment or reagents Consult test equipment instructions Sample contaminated with interfering molecule refer to Sensitivity specification in sensor instructions Remove source of contamination 8 1 6 Analog Inputs The cali...

Page 68: ...ontrol output has been left in HAND mode Switch back to AUTO It may be a normal part of the process None required LOW or LOW LOW ALARM Occurs if the sensor reading drops below the low alarm set points If your unit is programmed for an alarm relay output the alarm relay will activate The controller will continue to check the sensor reading and any outputs using the sensor will remain active Possibl...

Page 69: ...m total is 1 trillion gallons Normal operation Reset the total to clear alarm OUTPUT TIMEOUT This error condition will stop control It is caused by the output either relay or analog being activated for longer than the programmed Time Limit Possible Cause Corrective Action The process went further out of control than normal Increase time limit or reset timer The chemical supply has run out Replenis...

Page 70: ...ensor wires shorted Disconnect short Faulty sensor Replace sensor Faulty controller Replace or repair controller INPUT FAILURE This alarm indicates that the sensor input circuit is no longer working This error condition will stop control of any output using the sensor Possible Cause Correction Action Faulty controller Replace or repair controller BATTERY POWER LOW This alarm indicates that the bat...

Page 71: ...to Sect 7 1 To check the electrode check the electrode connections to the terminal strip refer to Figure 7 Make sure that the correct colors go to the correct terminals and that the connections are tight Restore power and see if the conductivity is back to normal If not replace the electrode 8 4 Procedure for evaluation of the pH ORP electrode The most common cause of a calibration failure is an e...

Page 72: ...software is not running Try a power cycle to reset it Faulty controller board Replace controller board CONTROLLER BOARD D8 LED Indicates the status of the 5 VDC power supply Normal operation is ON If not on Possible Cause Correction Action Faulty ribbon cable Replace ribbon cable Faulty power supply Replace power relay board CONTROLLER BOARD D9 LED Indicates the status of the 3 3 VDC power supply ...

Page 73: ...576 103803 Power switch 103859 Power cord 103860 Pigtails 103805 Strain relief insert 191742 Strain relief insert 191743 Strain relief insert 103808 Strain relief insert 103809 Strain relief insert 102903 3x Locknut 191738 Safety cover 191677 Strain relief insert locknut 102834 Fuse W600 610 only 191729 Front panel assembly 191732 Analog output board or 191731 Analog input board 191730 Sensor boar...

Page 74: ...71 WCT600 Sensor option BD and FD ...

Page 75: ...72 WCT600 Sensor option BN or FN ...

Page 76: ...73 WCT600 Sensor option BA BB BC FA FB FC ...

Page 77: ...74 WCT600 Sensor option DE DF ...

Page 78: ...75 WCT600 Sensor option DN ...

Page 79: ...76 WCT600 Sensor option HA HB and HC ...

Page 80: ...77 WCT600 Sensor option HD ...

Page 81: ...78 WCT600 Sensor option HN ...

Page 82: ...79 WDS600 Sensor option FF or FN ...

Page 83: ...80 WDS600 Sensor option PN ...

Page 84: ...81 WDS600 Sensor option PX ...

Page 85: ...82 WPH600 Sensor option PN ...

Page 86: ...83 WPH600 Sensor option PX ...

Page 87: ...ip and relays We stock circuit boards for immediate exchange after we have isolated the cause of the problem Factory authorized repairs that are received by next day air will be returned within 24 hours Normal priority for returns is two weeks Out of warranty repairs or circuit board exchanges are done on a flat fee basis after the warranty is expired ...

Page 88: ...ARK HOLLISTON MA 01746 USA TEL 508 429 1110 FAX 508 429 7433 Web www walchem com Cannon Water Technology Inc 233 Technology Way Suite 9 Rocklin CA 95765 Voice 1 916 315 2691 FAX 1 916 304 0210 csd cannonwater com https cannonwater com ...

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