Mechanical brake closing failed

What does 71A2 mean?

A mechanical brake control fault has occurred because the brake acknowledgment signal was not as expected during the brake closing sequence. This implies either the brake did not close, its feedback mechanism failed, or an obstruction is present, leaving the motor potentially unsecured or unable to hold position.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Verify that the physical acknowledgment signal from the brake accurately reflects its closed status (e.g., limit switch operation).

2. 4

   Check the brake mechanism for mechanical obstruction, wear, or damage that prevents full closure.