Converter's fan drive unit for gas transmission

PZWG 45 kW

Product enquiry 

The converter is dedicated to group operation in the fan drives units of gas cooling that is necessary during its compression. It contains a control algorithm limiting current harmonics and a number of parameters adjusted to the technological process of gas transmission.



  • Nominal power Pn at constant torque load for a permitted overload current Ip of 1.5In: 45kW
  • Nominal output current In for Pn power: 90A
  • Overload capacity: 1,5ln 60s every 10 min
  • Climatic working conditions:
    • Ambient temperature from -10 ° C to + 50 ° C
    • Humidity from 5% to 95%
    • Pressure from 860 hPa to 1060 hPa
    • Non-explosive environment, dust content 10mg/m3, atmospheric category II, permissible humidity up to 98% at 25°C (according to GOST - ISO 15150)
  • Degree of protection IP00
  • Voltage from the network side: 3x380..400V, 45 .. 66 Hz; other voltage levels available on request
  • Voltage from the electrical machine side: 3x380..400V, 0 .. 400Hz
  • Control:
    • Scalar V/f (linear/square),
    • Vector (sensor / sensorless)
  • Detachable signaling and control panel with LCD display
  • Built-in PLC
  • Built-in controller for a set of pumps or fans
  • Integrated PID controller
  • Built-in RS232 / RS485 communication module (Modbus)
  • Programmable constant speeds
  • Motopotentiometer function
  • The possibility of direct encoder connection
  • Omission of programmable resonant frequency bands
  • Defined shapes and inclinations of the speed reference characteristics (linear, "S-curve")
  • The possibility of working with torque regulation
  • Identification of engine parameters
  • Programmable structure:
    • switchable control variants (A, B),
    • speed reference (control panel, analog input, PID controller, motopotentiometer, function block),
    • torque reference (analog inputs, function block),
    • start and direction control (control panel, digital input, function block),
    • Programmable digital inputs: start, direction, operating lock, external fault, fault reset,
    • programmable digital outputs: readiness, operation, failure, no failure, warning, exceeding the programmed heat sink temperature, reaching the set speed, threshold speed, current limitation, function block),
    • programmable analog outputs: frequency, rotational speed, output current, voltage, load, any function block,
  • Measurement of working time
  • Lockout and diagnostics system
  • Keyboard protection with an access code system
  • The possibility of storing 4 motors' parameters in the memory
  • Defined sets of factory parameter
  • Integrated LC filter


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