Drayton DC2000 series Optimiser / Compensator Controller - Reset to Default Values procedure.

Issue

DC2000 series Optimiser / Compensator Controller requires resetting to default values due to exposure to electrical corruption.

Product Line

Field Devices

Environment

DC2000 series Optimiser / Compensator Controller installed to control Variable Temperature Mixing Valve, Boiler/s, Pumps etc.

Cause

DC2000 series Optimiser / Compensator Controller has been exposed to electrical corruption.

Resolution

DC2000 series Optimiser / Compensator Controller may be reset to default values as follows :- 

  1. Isolate power to Controller.
  2. Open Door of Controller.
  3. Locate PCB on rear of Controller Door.
  4. Locate pair of Steel Pins (marked PL1) on PCB.
  5. Link out pair of Steel Pins for 10 seconds approx.
  6. Remove Link.
  7. Close Door of Controller.
  8. Reinstate power to Controller.
  9. Re-programme Controller.

Re-programming procedure for the DC2000 series Optimiser / Compensator Controller may be viewed here.

Should the above reset to default values procedure fail to enable the DC2000 series Optimiser / Compensator Controller to be re-programmed then replacement of the Controller may need to be considered.

POSSIBLE REPLACEMENT

The most common control application to which theDC2000 series Optimiser / Compensator Controller may be applied comprises the following combination of inputs and outputs. 

Outside Air Temperature Sensor

Inside Air Temperature Sensor

Compensated Heating Temperature Sensor

Variable Temperature Heating Circuit Valve Actuator

Boiler/s (2 maximum)

H W S On/Off output (independent)

Should such inputs and outputs be confirmed then the DC1100 Optimiser / Compensator may be installed in place of the DC2000 series Optimiser / Compensator Controller.

Details of the DC1100 Optimiser / Compensator Controller may be viewed here.

Drayton A7xx series Sensors connected to the DC2000 Optimiser / Compensator Controller are compatible with the DC1100 Optimiser / Compensator Controller and may therefore be retained.

N.B.

It should be noted that where a DC2000 series Optimiser / Compensator Controller is included in an installation of a more complex nature then an alternative solution utilizing different products may need to be considered

In such installations not only will the DC2000 series Optimiser / Compensator Controller need to be replaced but its associated Sensors will also need to be replaced.

Resolutions to such installations may best be determined following a review of the control system installed by a member of the local Schneider Electric