ProMinent DCM 2 Series, Installation Manual

Page: 34 / 37

DCM 2 Installation
Page 34
Time
Modulation
Not applicable Pump ON time reduced as sensor
approaches TurnOFF setpoint.
Pump Type
Selection
User selects Pump Type which sets default
mL/stroke & Max. SPM..
‘Other’ type allow user to set MAX SPM.
All types allow user to modify mL/stroke.
Checks that existing feed rates are possible
when user changes pumps or set to MAX
SPM and alarm message if feed rate
modified.
Pump changes update the event log.
Not applicable
Relay & Frequency Controls Comparison (cont.)
Notes
1. Contact Sets
Runs once per controlling contact closure.
In addition to being able to use Contact sets to turn ON & OFF relays and frequency
controls, contact sets can have the following compensation:
Invert ON/OFF:
Switches the logical sense of the contact set so you can control on contacts opening or
closing.
Applications: Allows a control only when relay changes state
Surge tank fill, remote disable, second flow switch
2. Feed Limits
Users may set OFF on Alarm , turning OFF a Relay or Frequency on a time limit.
6.7. System Alarms & Indicating LEDs
System Alarms
Alarms are not specific to any sensor or control.
Name Alarm Message & Cause Effect
12VDC External “ Low Alarm ”
Wiring errors or a fault on any sensor
powered by the controller 12VDC
‘DC Power Output’ supply
Correct wiring. Remove defective sensor.
12VDC thermal fuse auto-recovers.
While alarmed: sensors, meters and current loops
powered by the 12VDC supply will not operate.
Internal 2.5V “ Out of Range ”
Sensor, meter or contact set wiring
error
Used to auto-calibrate all sensor measurements to
remove power supply drift error.
All sensor measurements stop auto-calibration.
Indicating LEDs
Name Location Function
Blue
‘OK’
Facepanel to left of LCD
Screen On when there are no Alarms
Flashes when flow switch is OFF or in Flow ON Delay
Red
‘ALARM’ Facepanel to left of LCD
Screen Flashes when any alarms are active.
Green
‘LINK’ Top Left of Ethernet jack On steady with Ehternet connected
Green
Top Right of Ethernet jack Flashes with Ethernet activity