Fault code

Inovance MD280 Err09 Undervoltage

Diagnostic context

What Err09 means on Inovance MD280

Err09 is the MD280 undervoltage. The manufacturer lists instantaneous power failure occurs on the input power supply. as one of the documented causes.

Operating context: Start with the manufacturer troubleshooting sequence. Reset the fault. Adjust the voltage to normal range.

This diagnostic context is an editorial explanation. The possible causes and recommended checks below are the verified manufacturer troubleshooting content.

Possible causes

  • Instantaneous power failure occurs on the input power supply.
  • The AC drive's input voltage is not within the allowable range.
  • The bus voltage is abnormal.
  • The rectifier bridge and buffer resistor are faulty.
  • The drive board is faulty
  • The main control board is faulty.

Recommended checks and actions

  • Reset the fault.
  • Adjust the voltage to normal range.
  • Contact the agent or Inovance.

Technical source

Inovance MD280 User Manual EN - Err09 troubleshooting — page 160

Inovance MD280 troubleshooting VI - Err09 — page 10