Commander variable speed drives have established the standard of excellence in motor control since 1983 when Control Techniques launched the first world commercial vector drive. Since then, Commander has undergone several successful reiterations, each time bringing new technology and innovations to the world of automation.

The new Commander C series has been designed to be a simple and compact AC motor speed controller that meets advanced requirements in a wide range of applications and provides optimum user experience.

Ambient Operating Temperature Size 1 – 4: -20°C to 40°C (-4°F to 104°F) @ 3 kHz switching freq. | Operation to 60°C (140°F) with de-rating
Size 5 – 9: -20°C to 40°C (-4°F to 104°F) @ 3 kHz switching freq. | Operation to 55°C (131°F) with de-rating
Cooling Method Forced convection
Humidity 95 % non-condensing at 40 °C (104 °F)
Storage Temperature Size 1 – 4: -40°C to 60°C (-40°F to 140°F) — 24 months Max.
Size 5 – 9: -40°C to 55°C (-40°F to 131°F) — 24 months Max.
Altitude De-rate the continuous output current by 1% for every 100 m (328 ft) above 1000 m (3,280 ft) to a maximum of 3000 m (9,840 ft)
Vibration Tested in accordance with IEC 60068-2-64 and IEC 60068-2-6
Mechanical Shock Tested in accordance with IEC 60068-2-27 and IEC 60068-2-29
Enclosure Rating IP20, NEMA 1 conduit kits available
Electromagnetic Capability IEC/ EN 61800-3 Immunity and Emissions
EN 61000-6-2: Immunity for industrial environments
EN 61000-6-4: Emissions for industrial environmentsM/br> EN 61000-3-2: Harmonic current emissions
An EMC data sheet is available on request
RoHS Complies with the Restriction of Hazardous Substances Directive (2011/65/EU)
AC Supply Requirements
Voltage 100 V models: 100 to 120 Vac ±10%
200 V models: 200 to 240 Vac ±10%
400 V models: 380 to 480 Vac ±10%
Phase 1Ø and 3Ø (Model dependent)
Maximum Supply Imbalance 2% negative phase sequence, 3% voltage imbalance between phases
Input Frequency  45 to 66 Hz
Input Displacement Power Factor 0.97
Switching Frequency Size 1 – 4: 0.667, 1, 2, 3, 4, 6, 8 12 & 16 kHz
Size 5 – 9: 2, 3, 4, 6, 8 12 & 16 kHz
Output Frequency Range  0 to 550 Hz
Frequency Accuracy ±0.02% of full scale
Frequency Resolution  0.01 Hz
Analog Input Resolution  Voltage mode: 11 bits (unipolar) Current mode: 11 bits
Braking  Dynamic braking transistor included, requires external resistor
DC Bus Undervoltage Trip 100 V models: 175 Vdc
200 V models: 175 Vdc
400 V models: 330 Vdc
DC Bus Overvoltage Trip Frame sizes 1 – 4:
100 V models: 510 Vdc
200 V models: 510 Vdc
400V models: 870 Vdc
Frame size 5 – 9:
200V models: 415 Vdc
400 V models: 830 Vdc
Drive Overload Trip Programmable: Default settings: 180% for 3s, 150% for 60s
Instantaneous Overcurrent Trip  220% of rated motor current
Phase Loss Trip  DC bus ripple threshold exceeded
Over-temperature Trip  Drive heatsink temperature exceeds 95°C (203°F)
Short Circuit Trip  Protects against output phase-to-phase fault
Ground Fault Trip  Protects against output phase-to-ground fault
Motor Thermal Trip  Electronically protects the motor from overheating due to loading conditions
Approval & Listings
UL, cUL UL file NMMS/8: E171230
CE CE approval
EU  These products comply with the Restriction of Hazardous Substances Directive (2011/65/EU), the Low Voltage Directive (2014/35/EU) and the Electromagnetic Compatibility Directive, (2014/30/EU).
RCM  RCM Registered supplier No. 12003815281
ISO Manufacturing facilities comply with ISO 9001:2015 and ISO 14001
TÜV C300 models only: The Safe Torque Off (STO) function may be used as a safety component of a machine.

Type examination certificates by TÜV Rheinland:
Frame sizes 1 – 4: No. 01/205/5383.03/18
Frame sizes 5 – 9: No. 01/205/5387.02/18

Functional safety parameters:
EN ISO 13849-1 – Cat 4, PLe
EN61800-5-2/EN62061/IEC 61508 – SIL 3

UL functional safety approval: FSPC E171230

Whatever your application, Commander C is the perfect solution across industry

The Commander series are simple and compact AC motor speed controllers that meet advanced requirements in a wide range of applications. Their small footprint – among the smallest in their class – makes them ideal for machine builders and OEMs, where size really matters.


motor control of pumps ventilators and compressors with general purpose variable speed drives
Pumping, Ventilating & Compressing
  • Improved energy efficiency during periods of low demand
  • On board PLC & PID functionalities make advanced control easy and efficient without the need of an external controller
  • Skip Frequencies allow users to easily avoid equipment resonant frequencies, reducing high vibration levels
  • Supply Loss Ride Through will keep the drive up and running through most power outages
general purpose drives for accurate remote speed control of conveyor belts
  • Accurate remote speed control with fieldbus communications
  • S-ramp acceleration / deceleration profiling provides smooth speed transitions minimizing machine jerk
  • Overload capacity up to 180% to add stability
  • Avoids early wear and tear of the equipment
Control Techniques general purpose drives for lifting hoisting and winching
Lifting, Hoisting & Winching
  • Adjustable mechanical brake sequencing with torque proving function – no need for an external controller
  • Embedded PLC functionality can manage local I/O reducing the need for an external controller
Access control variable speed drives for motion control
Access Control
  • Smooth motion with enhanced open loop control
  • Small physical size allows the drive to be mounted easily in smaller control cabinets
  • Highly reliable in harsh environments, providing long lasting service
general purpose drives for stable motor control for processing mixers kneaders agitators extruders
Processing (Mixers, Kneaders, Crushers, Agitators, Centrifuges, Extruders)
  • Ease of integration to external PLC or other management systems through powerful networking options
  • Conformal coating for enhanced environmental protection
  • Overload capacity up to 180%
  • Highly stable motor control

Commander C Highlights

✓ Set just 4 parameters to get your drive started
✓ Plug-in options for advanced control
✓ Dual Safe Torque Off (STO)
✓ Equipped with the latest energy saving features
✓ Up to 180% overload for high torque applications
✓ On board PLC
✓ Straightforward installation and commissioning
✓ Easy motor pairing and performance control
✓ Robust and reliable design