Alarm / Fault code 87 in allen bradley PowerFlex 755 drive

Allen Bradley PowerFlex 753, PowerFlex 755, PowerFlex 755T & PowerFlex 755TS Drive

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click2electro

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Mar 15, 2024 5:47 am

(@click2electro)

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Cause : IXo VoltageRange comes when voltage calculated for motor inductive impedance exceeds 25% of [Motor NP Volts].

1. Check for proper motor sizing.
2. Check for correct programming of [Motor NP Volts], parameter 41.
3. Additional output impedance can be required.

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