DCM510 Series Controller
Quick Start Guide
CAUTION
Before attempting calibration or commissioning of the DCM510 control system, water chemistry must be stable and within normal operating ranges of 7.2-7.8 pH, Free Chlorine at 1-3 ppm, and Total Alkalinity level at 80-120 ppm.
Calibrations
pH Single Point Calibration Example
Press the [CAL] button, then use the arrow buttons to scroll to pH sensor E, then press [OK]. Login with your password, if requested.
Next, take a water test and using the [MORE] buttons, enter the results, one decimal place at a time followed by the [SAVE] key. The LED screen should indicate "Sensor Calibrated". Press [NEXT] to continue to the next sensor to be calibrated, or press [ESC] twice to return to the Home screen.
Interface shows 'E:pH Sensor', 'Enter value', current value '7.66pH', 'SAVE', 'MORE', 'OK', 'ESC' buttons.
Chlorine/Bromine Sensor Single Point Calibration Example
NOTE: The ppm sensor CAL sequence was designed to optimize the DPD calibration by remembering the sensor value when the DPD [F1] button is pressed.
Press the [CAL] button, then use the [F1], [F2], [F3] buttons to scroll to desired sensor C:Free Chlorine, then press [OK]. Login with your password, if requested.
Next, remember to press the DPD [F1] button when taking a DPD sample. This starts the calibration sequence the moment the DPD [F1] button is pushed. A timer is also started for your reference. Then, once the water test is complete, using the [MORE] buttons, enter the results followed by the [SAVE] key.
Interface shows calibration options: 'CALIBRATE', 'C:Free Chlorine', 'D:Total Chlorine', 'E:pH Sensor'.
Interface shows sample input: 'C: Free Chlorine Sample & press DPD', current value '2.2ppm', 'DPD', 'MORE', 'OK', 'ESC' buttons.
Interface shows DPD wait timer: 'C: Free Chlorine DPD wait: 25sec', current value '2.2ppm', 'SAVE', 'MORE', 'OK', 'ESC' buttons.
The LED screen should then indicate "Sensor Calibrated". Press [NEXT] to continue to the next sensor to be calibrated, or press [ESC] twice to return to the Home screen.
Interface shows 'C:Free Chlorine Sensor Calibrated', 'NEXT', 'ESC' buttons.
Adjusting Setpoints
NOTE: Water chemistry is controlled by the chemical feeders. In our controllers, the setpoint adjustments are therefore in the outputs to the feeders.
pH Setpoint Example
For our default example, the pH feeder is assigned to Relay 1: Acid Feed. To change the pH set point, press the [MENU] button then use the [F1], [F2], [F3] buttons to point to "Adjust Setpoints". Press [OK] then use the [F1], [F2], [F3] buttons to point to the 1: Acid Feed relay, then press [OK]. Login with your password if requested, then press [OK]. Use the arrow buttons to change the control setpoint, then press [OK] to save the new setpoint.
Interface shows '1:Acid Feed', 'Adjust Setpoint', current value '7.4pH', 'DEDBND', 'MENU', 'OK', 'F1', 'F2', 'F3' buttons.
pH Deadband Example
Deadband is the control overlap necessary to keep a feeder from turning on and off too rapidly or "chattering". By default, the pH feeder is assigned a deadband of 0.20 pH. This means the pH must deviate 0.20 pH above the setpoint before the acid feeder will turn on.
To change the pH deadband, press the [MENU] button then use the [F1], [F2], [F3] buttons to point to ► Adjust Setpoints. Press [OK] then use the [F1], [F2], [F3] buttons to point to the 1:Acid Feed relay, then press [OK]. Press [DEDBND] [F1] and [OK]. Use the [F1], [F2], [F3] buttons to change the deadband, then press [OK] to save the new value. Press [ESC] to return to the Home screen.
Interface shows '1:Acid Feed', 'Adjust Setpoint', current value '7.4pH', 'DEDBND', 'MENU', 'OK', 'F1', 'F2', 'F3' buttons.
Interface shows '1:Acid Feed', 'Adjust Deadband', current value '0.2pH', 'SETPNT', 'OK', 'F1', 'F2', 'F3' buttons.
Refer to the Operation and Installation manual for more information on the Deadband and its function.
Alarms
Alarm Info and Alarm Clear Example
NOTE: All alarms in the DCM 510 series controllers are latching alarms by default which means once an alarm is triggered, it must be acknowledged or cleared. Alarm latching can be turned off in the DCM 510 I/O Setup menus.
Interface shows current readings (e.g., '2.04ppm', '7.44pH', '84.5F', '783mV', '2.33ppm', '256gpm') with status labels 'STATUS', 'ALARMS', 'SETPNT' and function buttons [F1], [F2], [F3].
If an alarm is active with the red LED flashing, pressing ALARMS [F2] will show how many alarms there are on the top line, and specific alarms on the 2nd and 3rd lines.
Interface shows '3 ALARMS', '►1: Acid Feed', 'E:PH Sensor', 'CLRALL', 'INFO', 'CLEAR' buttons [F1], [F2], [F3].
Alarm Details
Press and hold INFO [F2] and it will show detailed information on each alarm selected.
Interface shows '3 ALARMS', 'Limit: ON timer @', '00:20 2017-Aug-23 & 03:56 2017-Jul-03', 'CLRALL', 'INFO', 'CLEAR' buttons [F1], [F2], [F3].
Clearing Alarms
Pressing CLEAR [F3] will clear the selected alarm.
Interface shows '2 ALARMS', '►E:PH Sensor', 'C: Free Chlorine', 'CLRALL', 'INFO', 'CLEAR' buttons [F1], [F2], [F3].
CLRALL [F1] will clear all alarms, extinguish the flashing ALARM light and return to the Home screen.
Interface shows '2 ALARMS', '►E:PH Sensor', 'C: Free Chlorine', 'CLRALL', 'INFO', 'CLEAR' buttons [F1], [F2], [F3].
START / STOP Key
A quick way to force all chemical feed relays to the OFF position is to press the [STOP] button. The status LED in the upper right corner will change to a steady RED as will all the active control output LEDs. To resume normal control on all outputs press [START] again. A steady BLUE status LED indicates normal operation with no alarms, and a flashing RED LED indicates normal operation with an uncleared alarm.
Status indicators: Blue = OK, Red = Stop, Red Flash = Alarm.
Interface shows 'Control OFF: User STOPS! START restarts Any key exits' with function buttons [F1], [F2], [F3].
Feeder Prime/Force OFF
Forcing a relay or feeder ON, we call "Priming" because that is the most common use of this function. The relays can also be forced to STOP or Prime Cancel to be returned to normal operation from this menu.
Priming a Feeder
To Prime or Force ON a relay using the Prime function, from the Home screen, press [MENU] then to select "Prime, Force ON" then press [OK].
Interface shows current readings, 'STATUS', 'ALARMS', 'SETPNT' and function buttons [F1], [F2], [F3]. Also shows 'MENU', 'Home', 'Adjust Setpoints', 'Prime, Force ON', 'OK' buttons.
Enter an operator level password or higher if required, then press [OK].
Interface shows 'Prime, Force ON', '►1: Acid Feed', '2: Oxidant Feed', '3: Booster Feed', 'OK', 'F1', 'F2', 'F3' buttons.
NOTE: For safety, if the feeder selected is in an alarm timeout, or the flow switch or START/STOP button has stopped chemical feed, you will not be able to force the feeder ON until these conditions are changed.
Select the relay/feeder to force ON or OFF, then press [OK].
Interface shows 'Prime, Force ON', '1:Acid Feed', timer '00:05:00', 'STOP', 'START' buttons [F1], [F2], [F3].
Interface shows 'Prime, Force ON', '1:Acid Feed', timer '00:04:59', 'STOP', 'CANCEL' buttons [F1], [F2], [F3].
CAUTION
Forcing a feeder on for an extended time can be hazardous.
The default time on the Prime function is 5 minutes. Change the Prime timer duration if desired using the [F1]/[F2] keys, then press [START] [F3]. Pressing [CANCEL] [F3] again cancels the Prime, and returns the relay to normal control. Pressing [STOP] [F1] forces the relay OFF until you "UNSTOP" the relay.
Interface shows 'Prime, Force ON', '1: Acid Feeder', 'User STOPS!', 'UNSTOP' buttons [F1], [F2], [F3].
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