27040

Verify DRIVE-CLiQ cabling integrity at motor module connector. Check for loose contacts, bent pins, or shield continuity. Use Siemens diagnostic oscilloscope to confirm communication signal levels (LVDS differential pairs).

Power down machine before inspecting connectors.

In NCK/PLC menu path Diagnostics > Component Status > Servo Modules, verify motor module shows 'READY' or 'INITIALIZED' state, not 'BOOTING' or 'ERROR'. If stuck in BOOTING, check MD30120 (motor module address/node ID) matches hardware configuration.

Update motor module firmware via Siemens Service Tool (SST) if version is outdated. Check firmware release notes for DRIVE-CLiQ communication protocol compatibility with your NCK kernel version (check MD00000 NCK kernel number).

Firmware update interrupts machine operation; coordinate maintenance window.

If motor module remains unresponsive, replace the servo module or DRIVE-CLiQ gateway module. Log the module serial number and error code from Diagnostics > Error Memory before replacement.

In NCK menu path Parameters > Machine Data > Category Axis Safety, verify MD32000 = TRUE (global SI enable) and SD45000 = 1 (axis-enabled for SI). If both are correctly set, check Diagnostics > License Management for valid SINUMERIK Safety Integrated license (SINUMERIK Safety must be registered, not demo).

Confirm SI parameter block consistency: verify MD32010 (monitoring functions enabled), MD32020 (safe encoder communication) match motor module capability. Use Siemens Parameter Documentation to cross-reference your servo module series (e.g., SIMODRIVE 611E-SL vs. analog amplifier).

Check Parameter > Machine Data > Category Motor Module (MD30000 range) for correct module type declaration. Mismatch between MD30110 axis type and actual module (e.g., declaring analog axis but connected to digital DRIVE-CLiQ module) prevents SI readiness.

Verify +24VDC supply voltage at motor module control terminals using multimeter. Check for sagging voltage under load; nominal must be 24V ±10%. Trace supply back to IPC (Industrial PC) power supply module and verify internal fuse on servo power distribution board is not blown.

Do not probe high-voltage terminals; ensure 310VDC/480VAC stage is discharged before service.

Confirm axis enable signal is active (closed safety relay contact or solid-state enable from PLC output). In Diagnostics > Input/Output Status, monitor the discrete input mapped to motor module enable (typically DI input controlling MD30xxx enable parameter). Signal must be continuously high during operation.

Verify drive stage power (310VDC bus or 480VAC 3-phase) is present by checking DC bus voltage in Diagnostics > Drive Status > Voltage Monitoring. If bus voltage is low or missing, check main contactor position and upstream power distribution unit (PDU) status lights.

High voltage present; follow machine lockout/tagout (LOTO) procedures before manual inspection.