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ErrorLib — Industrial Fault Code Library

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205

2nd Multi-step Speed Reference 0 Exceeds 2nd Max Frequency

Omron · MX2 Inverter

What does 205 mean?

For the second motor settings, this warning occurs if the Multi-step speed reference 0 (A220) or the output frequency (F001) is set higher than the 2nd maximum frequency (A204). This indicates an operational limit conflict for the alternative motor profile, potentially limiting the achievable speed of the second motor.

Common Causes

  • Parameter A220 (2nd motor Multi-step speed reference 0) is set to a value greater than the 2nd maximum frequency (A204).
  • The commanded output frequency (F001) is attempting to exceed the maximum allowed frequency for the second motor (A204).
  • An operator command or external input is requesting a speed reference (A220) beyond the configured absolute maximum frequency (A204).

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Read the current values of parameter A220 (2nd Multi-step speed reference 0), F001 (Output frequency), and A204 (2nd maximum frequency).

  2. 2

    Adjust parameter A220 to be less than or equal to parameter A204, preventing the multi-step speed reference from exceeding the maximum.

  3. 3

    Verify that the current output frequency (F001) does not exceed A204, adjusting the external command source if necessary.

  4. 4

    Store the revised parameters in the drive's memory and cycle power to the drive.

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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
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