The Control Techniques Commander SE Microdrive series is an AC open loop vector that provides great flexibility as well as a small footprint.  Although this series is reliable you may encounter one of the HF Trip codes listed below.  These codes are a result of an internal error in the drive.  Most often these trip codes can be resolved by powering down and allowing the drive sit for 5 minutes before powering up again.

If the HF Fault code does not clear then your drive will likely require a repair.

Here is a list of possible Control Techniques Commander SE HF Trip Codes:

• HF01 – SOFTSTARTFAIL: Soft start relay failure detected by DSP (not applicable to SE size 5).
  • If the inrush/softstart relay opens u while the drive is running or does not close correctly, the drive will trip on HF01.
• HF02 – OIFAILURE: OI trip detected at power up.
  • If the drive detects an OI.AC (over-current trip on power up), then the drive will trip on HF02 and not OI.AC.
• HF03 – FANFAILED: Cooling fan not running (if fitted). No PWM detected by micro.
  • If your Commander SE is fitted with a heatsink cooling fan and its fails, the drive will trip on HF03.
• HF70 – LEVEL1OVERRUN: User code level 1 overrun.
• HF71 – LEVEL2OVERRUN: User code level 2 overrun.
• HF72 – LEVEL3OVERRUN: User code level 3 overrun.
  • The user interface code (control PCB microprocessor) runs on different priority levels and each task has a set time to complete its tasks. If for some reason the code cannot complete its task within the alloted time, it will trip HF70, HF71, or HF72.
• HF73 – DSPCOMMS: Communications between processor and DSP not working
  • The two microprocessors talk to each other via 2 wire RS485 serial communications. If this internal serial communication link fails, then the drive will trip HF73.
• HF74 – DSPOVERRUN DSP: code overrun.
  • This trip code is like HF70, 71, and 72 but with the Digital Signal Processor (DSP) on the power PCB.
• HF83 – POWERBOARD CODE: Incorrect power board code.
  • The DSP reads voltage from the power PCB to determine the correct kW amount. If this voltage is different than the expected value, the drive will trip HF83.
• HF88 – WDOG: User code watchdog failure.
• HF90 – STACKOF: User code stack overflow.
• HF91 – STACKUF: User code stack underflow.
• HF92 – ILLOPCODE: User code illegal opcode.
• HF96 – ILLADDRESS: User code illegal address.
• HF98  -INTCRASH: User code interrupt crash error.
  • While the user code is running, it is continuously checking that the data it is receiving is valid, and that the addresses are valid, etc. If it detects a problem, it will trip one of the 6 codes above: HF88, HF90, HF91, HF92, HF96, or HF98.

If you are interested in repairing or replacing your Commander SE Drive call us at 1-800-691-8511 or email sales@mroelectric.com.  You may also view our stock of Commander SE series.

Facing HF Trip Codes on Your Commander SE?

Don’t let HF trip codes disrupt your operations. MRO Electric is your go-to source for resolving Control Techniques Commander SE drive issues with speed and efficiency. We offer expert support and a comprehensive range of parts to get you back on track.