Heidenhain · TNC CNC Controllers
This error indicates that the Machine Control (MC) unit of the Heidenhain TNC CNC Controller failed to perform a required test of the motor brake line, as mandated by parameter settings. The test might also exceed its maximum allowed duration of 10 seconds. This suggests a potential issue in the electrical circuit controlling the brake, compromising safety by not verifying the integrity and responsiveness of the brake line.
Click steps to track your progress.
Verify the controller parameters related to motor brake line testing to confirm that the test is required and that its configuration is correct.
Perform a thorough inspection of the motor brake line wiring, checking for continuity, insulation integrity, and proper termination at all connection points.
Measure the voltage and current on the brake line during test activation to ensure correct electrical signals are present and that the line responds as expected.
Monitor the duration of the brake line test; if it consistently exceeds 10 seconds, investigate for resistance issues, cable damage, or control signal delays.
If wiring and external components are verified as functional, contact a Heidenhain service agency for diagnostics on the MC unit or the associated safety output module.