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IRZ-410 variable-frequency drive for sucker rod pumps (SRP) and progressive cavity pumps (PCP)


control, monitoring of parameters and protection of SRP/PCP electric motors with power ranging from 5 to 75 kW, with smooth acceleration, deceleration and speed control.

The product provides the following:

  • manual or automatic control
  • motor smooth acceleration and deceleration
  • energy saving
  • motor rotor speed control
  • rocking start to overcome jamming (heavy start)
  • continuous control of the mains voltage, phase sequence, values of the currents in three phases
  • calculation of voltage and current imbalance, power factor, load factor, power consumption, operating time
  • registration of monitored parameters and reasons for shutdown in real time with saving records in case of power failure
  • minimization of emergency shutdowns and increase in flow rate due to automatic control of rotation frequency
  • protection of equipment from emergency caused by failures in the electric mains and sucker rod pump unit
  • automatic reclosure when parameters return to the operating range

The drive provides connectivity to the following equipment:

  • remote control systems (normally closed and normally open contacts)
  • the SCADA-system by means of RS-232 or RS-485 interface via the Modbus-RTU exchange protocol
  • GPRS modem with the ability to upload information to the Internet
  • wireless or wired dynamograph
  • wellhead fluid temperature sensor
  • motor temperature and vibration sensor


  • integration of an input filter or an active front end to ensure the input voltage and current waveform distortion factor to be not more than 5% in accordance with IEEE-519-2014
  • ability to display graphs and dynamometer charts
  • ability to create dynamometer charts without dynamographs
  • compatibility with cavity pumps
  • smart control algorithms: calculation of the pump fill factor, flow rate, loads on downhole and surface equipment, automatic adjustment for max flow rate, reduction of plunger-liquid impacts
  • ability to manufacture drives with IP66 enclosure protection class


  • ability to change the rocking frequency without replacement of pulleys and shutdown
  • compatible with downhole monitoring (thermo-manometric) systems produced by various manufacturers
  • ability to connect a dynamograph
  • ability to save history to a USB-drive
  • graphic liquid crystal display
  • software update without shutting down the pumping unit
  • archive of dynamometer charts with the number of records up to 500
  • compliance with the requirements of oil companies and GOST R51321.1-2007
  • ability to include in the drive a set of electricity metering devices included in the State Register of Measuring Instruments


DesignationRated current, AOverall dimensions, mmWeight, kg
IRZ-410-25 25 1300х905х350 120
IRZ-410-32 32 120
IRZ-410-40 40 120
IRZ-410-60 60 126
IRZ-410-100 100 126
IRZ-410-160 160 1720х940х970 287
IRZ-410-25* 25 1115х910х400 90
IRZ-410-32* 32 90
IRZ-410-40* 40 95
IRZ-410-60* 60 95
IRZ-410-100* 100 95

* — Drives with IP66 enclosure protection class.

Supply voltage 190—520 V
Power of the connected motor 5—75 kW
Range of motor rotation frequency control:
— induction 0.5—100 Hz (up to 300 — optional)
— permanent magnet 15—300 Hz
Spacing of motor rotation frequency control 0.1 Hz
Error of monitored current, voltage, rotation frequency and time setting 2 %
Operating temperature -60…+50 °C
Enclosure protection class IP54 / IP66