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ErrorLib — Industrial Fault Code Library

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111

PwrBd Invalid ID

Allen-Bradley · PowerFlex 750

What does 111 mean?

The power structure ID is invalid, meaning the main control board cannot correctly identify the connected power structure. This suggests a communication issue or a fundamental mismatch between the boards. The drive cannot start or operate safely without proper identification of its power components, leading to a shutdown.

Common Causes

  • The main control board (MCB) cannot read or incorrectly reads the power board's unique identification code.
  • Physical damage to the power board's ID chip or related circuitry on the power board.
  • Corrupted power board ID data stored in its non-volatile memory due to power disturbance.
  • Intermittent or poor connection between the main control board and the power board backplane.
  • Installation of a power board from a different product family or incompatible series.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    1. Perform a drive power cycle by disconnecting input power (e.g., 480VAC) for 30 seconds.

  2. 2

    2. Ensure the main control board (MCB) is fully and correctly seated into its slot on the power board backplane.

  3. 3

    3. Visually inspect the backplane connector between the MCB and PB for bent, damaged, or corroded pins.

  4. 4

    4. Verify the power board part number and series against compatibility charts for the installed MCB using product documentation.

  5. 5

    5. If the issue persists after these checks, replace the power board as its identification circuit or data may be faulty.

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

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100Parameter Chksum101PwrDn NVS Blank10132I1 Incompat PS
Source: Allen-Bradley PowerFlex 750
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