PLEASE NOTE: Effective 2019, we no longer supply Control Techniques variable frequency drives and components. We have drives from several other manufacturers which can meet or exceed the performance characteristics of the Control Techniques line. Simply complete the form below, or contact us with the model of your current or obsolete Control Techniques drive and we’ll be glad to identify a suitable replacement.

Also, the Fincor and Saftronics lines of AC variable frequency drives, DC variable speed drives, and reduced voltage starters were once owned by Emerson but have been obsolete for several years. However, we have many years’ experience working with these drives and can quickly identify replacements capable of exceeding the quality and performance of these older drive technologies. For a suitable replacement, fill out the form below or contact us with your drive or application requirements, and we’ll handle it from there!

Commander SE

Go to Control Techniques, Solutions Through Innovation

Simplicity with Function

Obsolete Drive Replacement RFQ -

If you need a replacement for an existing obsolete drive, complete the following form and we will send you a quote for a suitable replacement.

* Required

Is an encoder or tachometer being used for speed feedback to the drive?:
Opt-In to our e-mail list:


Ambient Operating Temperature -10ºC to 40ºC (14ºF to 104ºF) @ 6kHz carrier freq. -10ºC to 50ºC (14ºF to 122ºF) @ 3kHz carrier freq. For SE Size 4–25HP and all SE Size 5’s. -10ºC to 40ºC (14ºF to 104ºF) @ 3kHz carrier freq.
Cooling method Convection and forced convection, model dependent
Humidity 95% maximum non-condensing at 40ºC (104ºF)
Storage Temperature -40ºC to 60ºC (-40ºF to 140ºF) — 12 months Max.
Altitude Derate the continuous output current by 1% for every 100m (328 ft) above 1000m (3280 ft) to a maximum of 4000m (13,000 ft)
Vibration Tested in accordance with IEC 68-2-34 and IEC 68-2-36
Mechanical Shock Tested in accordance with IEC 68-2-29
Enclosure NEMA 1 (IP 21)
Electromagnetic Immunity In compliance with EN61800-3 and EN50082-2
Electromagnetic Emissions In compliance with EN61800-3 second environment, without RFI filter. EN50081-1*, EN500821-2 and EN50081-3 first environment with optional RFI filter. *Size 1 only
  AC Supply Requirements
Voltage 200V model: 200 to 240 VAC +10% 400V model: 380 to 480 VAC +10%
Phase 1Ø and 3Ø (Model Dependent)
Maximum Supply Imbalance 2% negative phase sequence (3% voltage imbalance between phases)
Frequency 48 to 62 Hz
Input Displacement Power Factor 0.97
Carrier Frequency 3, 6 and 12 kHz (Default Value Model Dependent)
Output Frequency  Up to 1000 Hz
Frequency Accuracy +0.01% of full scale
Frequency Resolution 0.1 Hz
Analog Input Resolution 10 Bit + sign (Qty 2)
Serial Communications ANSI 2-wire EIA485 via RJ45 connector. Baud rate is 4800, 9600 or 19,200
Braking DC injection braking standard. Dynamic braking transistor standard (not available on Size 1).
DC Bus Undervoltage Trip 200V model 180 VDC (approximately 127 VAC line voltage) 400V model: 400 VDC (approximately 282 VAC line voltage)
DC Bus Overvoltage Trip 200V model: 420 VDC (approximately 299 VAC line voltage) 400V model: 830 VDC (approximately 587 VAC line voltage)
MOV Voltage Transient Protection 160 Joules, 1400 VDC clamping (Line to line and line to ground)
Drive Overload Trip Current overload value is exceeded. Programmable to allow up to 150% of drive current for one minute.
Instantaneous Overcurrent Trip 215% of drive rated current
Phase Loss Trip DC bus ripple threshold exceeded
Overtemperature Trip Drive heatsink temperature exceeds 95ºC (203ºF)
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
  Approvals & Listings
UL, cUL UL File #E171230
IEC Meets IEC Vibration, Mechanical Shock and Electromagnetic Immunity Standards
CE Designed for marking
NEMA NEMA 1 enclosure type
ISO 9002 Certified Manufacturing Facility


Control Techniqus Commnader SE AC Drive Dimensions

Control Techniqus Commnader SE AC Drive Dimensions

Information provided by Control Techniques, a world leader in the design, production and marketing of electronic drives for the control of electric motors.