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ErrorLib — Industrial Fault Code Library

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69

DB Resistance

Allen-Bradley · PowerFlex 700

What does 69 mean?

The measured resistance of the internal Dynamic Braking (DB) resistor is outside its specified operating range. This could indicate a damaged or incorrect braking resistor, preventing effective energy dissipation during deceleration. A faulty DB resistor can lead to overvoltage trips or poor braking performance.

Common Causes

  • Braking resistor fault or excessive temperature detected.
  • Braking resistor value out of specified range.
  • Braking resistor connected improperly or shorted.
  • Excessive regenerative energy requiring braking resistor activation.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Replace the internal Dynamic Braking resistor with a specified replacement part.

Browse all codes in this manual (49)
Verified technical data. Last updated: April 2026

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Source: Allen-Bradley PowerFlex 700
Open Manual (Page 84)Search more codes in this manual