231-A930

Check safety door status

Navigate to MOD → Machine Parameters → Safety and verify door switch inputs in MP7500-MP7599 range. Check if door switches are properly wired and functioning.

Never bypass safety door switches - this violates safety regulations

Verify SLS speed settings

Check MP7650-MP7659 (SLS speed limits) and ensure they are appropriate for your application. Compare against actual axis speeds when door was opened.

Set SLS speeds 20-30% higher than typical door-open operations but low enough for safety

Test door interlock sequence

Perform controlled test by opening door during slow jog movement to verify SLS activation timing and speed monitoring.

Use extremely slow speeds during testing

Review SLS parameter settings

Access MOD → Machine Parameters → Safety Parameters and examine MP7650 (SLS1), MP7651 (SLS2), MP7652 (SLS3), MP7653 (SLS4) for each axis.

Document original values before making changes

Analyze movement requirements

Review the program that triggered the alarm and identify maximum required speeds during safety-limited conditions. Check feed rates in affected NC blocks.

Never set SLS speeds higher than what's safe for operator access

Adjust SLS parameters appropriately

Modify MP7650-MP7653 values to accommodate required movements while maintaining safety margins. Restart control after parameter changes.

Coordinate with safety engineer to ensure compliance with risk assessment

Check SKERN-CC status

Navigate to MOD → System Info → Safety System and verify SKERN-CC communication status. Look for any error indicators or timeout messages.

SKERN-CC errors require immediate attention before resuming operation

Verify safety system configuration

Check MP7600-MP7649 (Safety system parameters) for correct SKERN-CC configuration. Verify safety signature matches installed safety software version.

Safety signatures must match exactly - even minor version differences cause issues

Restart safety system

Perform controlled restart of SKERN-CC through MOD → Safety → System Restart. Monitor startup sequence for any initialization errors.

Safety system restart requires proper authorization and safety procedures

Monitor encoder diagnostics

Access MOD → Diagnosis → Axis Diagnosis and check encoder signal quality for affected axes. Look for signal interruptions or noise during movement.

Use oscilloscope on encoder signals if TNC diagnostics show intermittent issues

Verify encoder parameters

Check MP1000-MP1099 (Encoder parameters) for correct resolution and signal type settings. Ensure encoder multiplication factors are accurate.

Incorrect encoder parameters can cause dangerous position errors

Test encoder at various speeds

Perform controlled movements at different speeds while monitoring encoder feedback quality. Document any speed ranges where signal degrades.

Encoder issues often manifest at specific speed ranges due to resonance or electrical interference