For continuous delivery

The controller S-KG is recommended for continuous flow control in combination with the micro annular gear pumps mzr-2521, mzr-2921, mzr-4622, mzr-2542 and mzr-2942. The 4-Q-DC servo amplifier enables to control the constancy of flow rate via motor speed using the encoder mode of operation. Speed can be adjusted either with an external voltage signal (0…10 V), external current signal (4…20 mA) or an external potentiometer.


  • Pump controller for continuous delivery
  • Good value 4-Q-DC servo amplifier
  • Digital encoder regulator
  • Compact plastic housing
  • Speed set with external voltage signal, external current signal or external potentiometer
  • Current delimiter
  • 6-pole pin headers for plug-in of mzr-pump
  • Two colored LED status indicator

Technical data

  • Controller
    PID controller for motor speed
  • Supply voltage
    24 V DC (10-30 V)
  • Max. continuous output current
    0.5 A
  • Max. peak output current
    1 A
  • Velocity range
    100 - 6,000 rpm
  • Voltage
    screw terminal
  • Pump connector
    pin headers, 6-pole
  • Input for motor speed "An_in"
    voltage signal 0 – 10 V; current signal 4 – 20 mA; external potentiometer 10 kΩ
  • Enable input "Enable"
    Enable: low (0 … 0.5 V); Disable: high (4 V … UB)
  • Direction input "L/R"
    Right direction: low (0 … 0.5 V); Left direction: high (4 V … UB)
  • Speed output "Enc_out"
    Open collector max. UB / 50 mA
  • Error output "Error"
    Open collector max. UB / 50 mA; no Error: high level
  • Operating temperature range
    0 ... +50 °C (+122 °F)
  • Protection class
    IP 20
  • Dimensions (L x W x H)
    approx. 68 x 57 x 24 mm
  • Weight
    approx. 35 g
  • Remarks
    Subject to technical changes.
  • Notice
    Even if single parameters are within the indicated performance range of technical data, certain parameter combinations may not be achievable. Single parameters may exceed their indicated performance range under adequate circumstances. For detailed evaluation please contact HNP Mikrosysteme. Actual performance may vary. Specifications are subject to change without notice. 
    This document is subject to change without notice.

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