Stand-by Pumps and Compressor Controls

AHD 408 E

Stand-by Pump Control for two electrically driven pairs of pumps, with black-out function

The stand-by pump control AHD 408 E is a microprocessor-controlled device for the independent control and monitoring of two pairs of electrically driven pumps with stand-by control and black-out-function.

Product feature:

  • Compact design for console, panel or switchbox installation
  • Front dimension 72mm x 144mm, insertion depth 216mm
  • Degree of protection IP 20 (front side, with protection cover IP 54)
  • Weight appr. 1.0 kg
  • Power supply 24 V DC +30%/-25%
  • Selector push switch for main pump and push switch for setting the pair of pumps to operation, LED indication for operation of main or stand-by pump, stand-by alarm and normal pressure indication integrated in front panel of the unit for each pair of pumps
  • After switching on, build-up of pressure is performed by stand-by pump, thereafter change over to operation with main pump
  • Automatic start of stand-by pump in case of pressure loss with stand-by alarm
  • Reset of stand-by alarm by means of push switch “ON”
  • Black-out –function (LED-indication in front panel of the unit) with switching off of all pumps and configurable delayed start at restoration of mains power to avoid overload conditions
  • Lamp test push button
  • Text field in front panel of the unit for easy replacement
  • Relay output for pump contactors: potential free contacts, max. 250 V AC, 3 A
  • Common alarm and common alarm repetition, potential free contacts, max. 48 V DC/AC, 1 A
  • All connections on 24-pole terminal on rear side of the unit
  • Inputs isolated from remaining electronics by means of optocouplers
  • Unit controllable by serial data communication with external data station and there connected switches
  • Type approved by Germanischer Lloyd (further approvals on demand)

 

AHD 408 A

Stand-by Pump Control for two loops with attached main pump and electrically driven stand-by pump

The stand-by pump control AHD 408 A is a microprocessor-controlled device for the independent control and monitoring of two loops with main pump driven by ship main engine and electrically driven stand-by pump.

Product feature:

  • Compact design for console, panel or switchbox installation
  • Front dimension 72mm x 144mm, insertion depth 216mm
  • Degree of protection IP 20 (front side, with protection cover IP 54)
  • Weight appr. 1.0 kg
  • Power supply 24 V DC +30%/-25%
  • Push switch for setting to operation of stand-by control, LED indication for operation of stand-by pump, stand-by alarm, indication for high rotating speed of main engine and normal pressure indication integrated in front panel of the unit for each loop
  • After switching on, build-up of pressure is performed by stand-by pump without release of stand-by alarm, after reaching speed operation switch point change over to operation with attached pump
  • Automatic start of stand-by pump in case of pressure loss with stand-by alarm
  • Reset of stand-by alarm by means of push switch “ON”
  • Engine speed input with function monitoring
  • Lamp test push button
  • Text field in front panel of the unit for easy replacement
  • Relay output for pump contactors: potential free contacts, max. 250 V AC, 3 A
  • Common alarm and common alarm repetition, potential free contacts, max. 48 V DC/AC, 1 A
  • All connections on 24-pole terminal on rear side of the unit
  • Inputs isolated from remaining electronics by means of optocouplers
  • Type approved by Germanischer Lloyd (further approvals on demand)

 

AHD 408 E-K

Combined Stand-by Pump and Compressor Control for one electrically driven pairs of pumps and one electrically driven pairs of compressors, with black-out function

The stand-by pump control AHD 408 E-K is a microprocessor-controlled device for the independent control and monitoring of one pair of electrically driven pumps and one pair of electrically driven compressors with stand-by control and black-out-function.

Product feature:

  • Compact design for console, panel or switchbox installation
  • Front dimension 72mm x 144mm, insertion depth 216mm
  • Degree of protection IP 20 (front side, with protection cover IP 54)
  • Weight appr. 1.0 kg
  • Power supply 24 V DC +30%/-25%
  • Selector push switch for main pump resp. main compressor and push switch for setting the pair of pumps resp. compressors to operation, LED indication for operation of main or stand-by pump resp. compressor, stand-by alarm and normal pressure indication integrated in front panel of the unit for each pair of pumps resp. compressor
  • After switching on, build-up of pressure is performed by stand-by pump, thereafter change over to operation with main pump
  • Automatic start of stand-by pump in case of pressure loss with stand-by alarm
  • Control of pair of compressors in dependence of status of three pressure switches for low, medium and high pressure
  • Reset of stand-by alarm by means of push switch “ON”
  • Black-out –function (LED-indication in front panel of the unit) with switching off of all pumps and compressors and configurable delayed start at restoration of mains power to avoid overload conditions
  • Lamp test push button
  • Text field in front panel of the unit for easy replacement
  • Relay output for pump and compressor contactors: potential free contacts, max. 250 V AC, 3 A
  • Common alarm and common alarm repetition, potential free contacts, max. 48 V DC/AC, 1 A
  • All connections on 24-pole terminal on rear side of the unit
  • Inputs isolated from remaining electronics by means of optocouplers
  • Type approved by Germanischer Lloyd (further approvals on demand)