EL
ErrorLib
Brands
||
  1. Home
  2. Omron
  3. MX2 Inverter
  4. 231
About·Privacy·Terms

ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

231

2nd Motor Starting Frequency Exceeds Upper Limit

Omron · MX2 Inverter

What does 231 mean?

For the second motor settings, this warning occurs when the inverter's starting frequency (b082) is set higher than the 2nd frequency upper limit (A261). This inconsistent configuration may prevent the second motor from starting or operating as intended within its defined frequency limits.

Common Causes

  • Parameter b082 (Inverter starting frequency) for the second motor is set to a value greater than its 2nd frequency upper limit (A261).
  • The drive is configured to start at a frequency (b082) that is logically above its defined operational upper frequency boundary (A261).
  • An incorrect value was entered for b082 during system setup, causing it to conflict with A261.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Read the current values of parameter b082 (Inverter starting frequency) and parameter A261 (2nd frequency upper limit).

  2. 2

    Adjust parameter b082 to be less than or equal to parameter A261, ensuring the starting frequency is within the operational upper limit.

  3. 3

    Alternatively, if a higher operational upper limit is desired, increase A261 to a value greater than or equal to b082, considering motor limitations.

  4. 4

    Save all parameter changes to the drive's memory and restart the inverter.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

001Frequency Upper Limit Exceeded002Frequency Lower Limit Exceeded005Multi-step Speed Reference 0 Exceeds Max Frequency
Source: Omron MX2 Inverter
View Official PDFSearch more codes in this manual