AHD 408 E-K

Combined Stand-by Pump and Compressor Control for 1 Electrically Driven Pair of Pumps and 1 Electrically Driven Pair 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 1 pair of electrically driven pumps and one pair of electrically driven compressors, with stand-by control and black-out-function.

Product Features

  • 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 approx. 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 changes 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 3 pressure switches for low, medium and high pressure
  • Reset of stand-by alarm by means of push switch to “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

Datasheets

Certificates