100565

Check servo drive status

Navigate to Diagnostics > Drive > Status and examine all servo axes for fault indicators or red status lights on drive modules.

Ensure machine is in safe state before checking drive status

Verify encoder feedback

In HMI go to Diagnostics > Machine > Actual Values and confirm encoder position feedback is stable and updating correctly for all axes.

Look for erratic position values or frozen encoder counts

Check drive parameters

Access Parameters > Machine Data > Drives and verify MD30xxx series parameters match motor nameplate data and encoder specifications.

Pay special attention to MD30110 (motor type) and MD31050 (encoder type)

Restart automatic test

Clear all alarms, then restart test via Commissioning > Servo > Automatic Test Machine function after resolving hardware issues.

Check safety circuit status

Navigate to Diagnostics > PLC > Safety and verify all safety inputs show green status, including emergency stops and guard door switches.

Never bypass safety devices - resolve root cause of safety activation

Examine PLC safety logic

In STEP7 or TIA Portal, monitor safety function blocks and check for any safety-related DB parameters that may be preventing test execution.

Look for safety acknowledgment requirements in the PLC program

Reset safety system

Perform proper safety reset sequence via HMI Safety menu, ensuring all interlocks are physically clear before reset.

Some systems require key switch reset after safety activation

Restart test sequence

After safety reset confirmation, reinitiate automatic test via Commissioning > Test Functions menu.

Backup current parameters

Create archive via Startup > Data Backup > Archive Machine Data before making any parameter changes.

Always backup before parameter modifications

Verify axis configuration

Check MD30130 (axis type) and MD30131 (axis assignment) parameters match actual machine configuration in Parameters > Machine Data > Axes.

Ensure linear/rotary axis types are correctly defined

Validate test parameters

Review MD36xxx series parameters for automatic test limits, speeds, and enable flags in Machine Data > Test Configuration.

MD36010 enables/disables automatic test functions

Reset and restart NCK

Perform NCK reset via Startup > Reset > NCK Reset to reload corrected parameters, then retry automatic test.

Check bus communication status

Navigate to Diagnostics > Hardware > Bus Systems and verify all drive modules show green communication status on PROFIBUS/PROFINET.

Red or yellow status indicates communication problems

Verify bus configuration

In HW Config, confirm drive module addresses match physical DIP switch settings and bus termination is properly configured.

Incorrect termination can cause intermittent communication failures

Check cable connections

Physically inspect PROFIBUS/PROFINET cables for damage, loose connections, or EMI interference near power cables.

Use bus tester to verify signal quality if available

Reset communication

Perform bus reset via Diagnostics > Hardware > Reset Bus, then restart automatic test after all drives show online status.