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ErrorLib — Industrial Fault Code Library

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235

2nd Motor Starting Frequency Exceeds Multi-step Speed Reference 0

Omron · MX2 Inverter

What does 235 mean?

For the second motor settings, this warning indicates that the inverter's starting frequency (b082) is set higher than the 2nd Multi-step speed reference 0 (A220) or the output frequency setting (F001). This creates a logical conflict for initial motor speed settings, potentially causing the drive to jump to a higher speed than intended immediately after starting the second motor.

Common Causes

  • Parameter b082 (Inverter starting frequency) for the second motor is set higher than the 2nd Multi-step speed reference 0 (A220).
  • The drive's starting frequency (b082) is configured to initiate operation above the nominal speed reference (A220) or current output frequency (F001).
  • Discrepancy between the defined starting frequency (b082) and the active speed command, creating a potential operational conflict.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Read the current values of parameter b082 (Inverter starting frequency), A220 (2nd Multi-step speed reference 0), and F001 (Output frequency setting).

  2. 2

    Adjust parameter b082 to be less than or equal to parameter A220, ensuring the starting frequency does not exceed the multi-step speed reference.

  3. 3

    If A220 or F001 are intended to be higher, increase these parameters appropriately to be greater than or equal to b082.

  4. 4

    Save all adjusted parameters to the drive's memory and perform a system reset.

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
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