ProMinent DCM3 Series Manual de usuario

DCM3 Series Controller

Quick Start Guide

pH Single Point Calibration Example

Press the button, then use the arrow buttons

to scroll to pH sensor E, then press .

Next, take a water test and using the buttons,

enter the results, one decimal

place at a time, followed by the

SAVE key. The LED screen

will indicate Sensor

Calibrated. Press NEXT to continue to the next

sensor to be calibrated, or press ESC twice to return to

the Home screen.

Free Chlorine

Single Point Calibration Example

NOTE: The Free Chlorine calibration routine is

designed to optimize a DPD calibration by

remembering the ppm value at the moment the DPD

button is pressed.

Press the button, then use

the buttons to scroll to C:

Free Chlorine, then press .

When ready, remember to press the DPD button

first, to instruct the calibration to

save the sensor reading. A timer

is then started on the display for

your use. Once the Free

Chlorine value is measured,

enter the results using the arrow buttons, followed by

the SAVE key.

If the calibration is accepted, the LED screen will then

indicate Sensor Calibrated. Press NEXT to

continue to the next sensor to be

calibrated, or twice to return

to the Home screen.

Status LED

Steady Blue = Normal

Flashing Red = Alarm

Steady Red = An output relay is Forced OFF

pH Setpoint Example:

Set points menu is located in the outputs that control

the feeders.

By default, and in our example, the pH feeder is

assigned to Relay 1: Acid Feed.

To change the pH set point, press the SETPNT

button. Use the buttons to point to the ►1:Acid

Feed relay, then press .

requested, then press .

Use the buttons to

change the pH Setpoint, then press to save the

new setting.

Deadband:

Deadband is the control overlap necessary to keep a

feeder from turning on and off too rapidly, sometimes

called “chattering”.

By default, the pH feeder is assigned a deadband of

0.10 pH. This means the pH must deviate 0.10 pH

above the setpoint before the acid feeder will turn on.

The default deadband for ORP is 5mV and the Free

Chlorine deadband is 0.5 ppm.

The control deadbands do not normally need to be

changed after being set by your ProMinent technician

during startup.

Refer to the Operation and Installation manual for more

information on the Deadband and its function.

2.04ppm 2.33ppm 

7.44pH 783mV

84.5F 256gpm

STATUS ALARMS SETPNT

CAUTION

Before attempting calibration or commissioning of the DCM3 control system,

water chemistry must be stable and within normal operating ranges of 7.2-7.8

pH, Free Chlorine at 1-5 ppm, and Total Alkalinity level at 80-120 ppm.

E:pH Sensor

Enter value

7.66pH

SAVE MORE

1:Acid Feed

Adjust Setpoint

7.4pH

DEDBND

C:Free Chlorine

DPD wait: 25sec

2.2ppm

SAVE MORE

C:Free Chlorine

Sample & press DPD

2.2ppm

DPD MORE

C:Free Chlorine

Sensor Calibrated

ORP input is factory calibrated and cannot be

re-calibrated in the field.

Calibrations

Adjusting Setpoints

Alarm Info and Alarm Clear Example:

NOTE: All alarms in the DCM3 series controllers are latching alarms

by default. Once an alarm is triggered, it must be acknowledged or

cleared. Alarm latching can be turned off in the DCM3 I/O Setup

menus.

If an alarm is active with the red LED flashing, pressing

ALARMS will show how many alarms there are on

the top line, and specific alarms on the 2nd and 3rd

lines.

Select the individual alarm using the ►, then press and

hold INFO button , and LED screen will show

detailed information on each alarm.

Pressing CLEAR will clear the selected alarm

CLRALL will clear all alarms, extinguish the flashing

red ALARM LED, light the blue OK LED, and return to

the Home screen.

A quick way to force all chemical feed relays to the

OFF position is to press the button. The status

LED will change to a steady RED as will all the active

control output LEDs. To resume normal control on all

outputs, press again. A steady BLUE status LED

indicates normal operation with no alarms, and a

flashing RED LED indicates normal opreration with an

active alarm.

Temporarily forcing a feeder ON, we call “Priming”

because that is the most frequent use of this function-

to prime a chemical feeder. The relays can also be

forced to STOP (i.e., during troubleshooting) or then be

“UNSTOPPED” to be returned to normal operation

from this menu.

To Prime or “Force ON”a relay:

From the Home screen, press then to select

Prime, Force ON then press .

Enter an operator level password or higher if required,

then press .

Select the feeder to Prime or STOP, then press .

The default time on the Prime duration is 5 minutes.

Change the Prime timer duration, if desired, using the

arrow keys, then press START to begin priming the

pump.

Pressing CANCEL again, cancels the Prime and

returns the relay to normal control by the sensor.

Pressing STOP not only STOPs the Prime, but also

forces the feeder OFF, until you UNSTOP the feeder.

ProMinent Fluid Controls, Inc.

136 Industry Drive

Pittsburgh, PA 15275

412.787.2484

www.prominent.us

Part Number 7750429 Rev.4 9/29/22

Alarms

2.04ppm 2.33ppm 

7.44pH 783mV

84.5F 256gpm

STATUS ALARMS SETPNT

3 ALARMS 

►1:Acid Feed

E:pH Sensor

CLRALL INFO CLEAR

3 ALARMS 

►1:Acid Feed

E:pH Sensor

CLRALL INFO CLEAR

3 ALARMS 

Limit:ON timer @

00:20 2017-Aug-23

& 03:56 2017-Jul-03

3 ALARMS 

►1:Acid Feed

E:pH Sensor

CLRALL INFO CLEAR

2 ALARMS 

►E:pH Sensor

C:Free Chlorine

CLRALL INFO CLEAR

2 ALARMS 

►E:pH Sensor

C:Free Chlorine

CLRALL INFO CLEAR

2.04ppm 2.33ppm 

7.44pH 783mV

84.5F 256gpm

STATUS ALARMS SETPNT

START / STOP key

2.04ppm 2.33ppm 

7.44pH 783mV

84.5F 256gpm

STATUS ALARMS SETPNT

Control

OFF:User STOPs!

START restarts

Any key exits

Feeder Prime/Force OFF

2.04ppm 2.33ppm 

7.44pH 783mV

84.5F 256gpm

STATUS ALARMS SETPNT

MENU 

Home

Adjust Setpoints

►Prime, Force ON

MENU 

Home

Adjust Setpoints

►Prime, Force ON

Prime, Force ON 

►1:Acid Feed

2:Oxidant Feed

3:Booster Feed

Prime, Force ON 

1:Acid Feed

00:05:00

STOP START

Prime, Force ON 

1:Acid Feed

00:04:59

STOP CANCEL

2.04ppm 2.33ppm 

7.44pH 783mV

84.5F 256gpm

STATUS ALARMS SETPNT

CAUTION: Forcing a feeder on for an extended period

can be hazardous.

NOTE: For safety, if the feeder selected is in a timeout alarm, or

the flow switch or START/STOP button has stopped chemical feed,

you will not be able to force the feeder ON (Prime) until these

conditions are changed.

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