10750

Check Axis Movement

Navigate to Machine > Manual Machine > JOG mode and attempt slow manual movement of the affected axis at 1% feedrate override.

Ensure machine is in safe position before manual movement

Inspect Mechanical Components

Check ballscrews, linear guides, and coupling connections for debris, damage, or binding. Verify proper lubrication levels.

Listen for unusual grinding or clicking sounds during movement

Verify Travel Limits

Check MD36100 (POS_LIMIT_PLUS) and MD36110 (POS_LIMIT_MINUS) against actual machine position in Diagnostics > Drive > Actual Values.

Compare machine coordinates with workpiece coordinate offsets

Review Cutting Parameters

Check current program feedrates (F values) and spindle speeds (S values) against machine specifications in the part program editor.

Compare against recommended parameters in MD32000 (RATED_CURRENT)

Monitor Drive Load

Access Diagnostics > Drive > Service Display and monitor current load percentage during program execution.

Normal operation should stay below 80% of rated current

Adjust Machining Strategy

Reduce feedrate override to 50% or implement smaller depth of cut in the NC program to reduce instantaneous load.

Use G01 with reduced feedrate for initial testing

Verify Current Limit Settings

Navigate to Commissioning > Drive > Current Controller and check MD32110 value against motor nameplate current rating.

MD32110 should typically be 150-200% of MD32000 rated current

Check Servo Gains

Review MD32200 (KV_FACTOR) and MD32210 (TN_FACTOR) in Commissioning > Drive > Speed Controller for proper tuning.

Document original values before making changes

Perform Drive Optimization

Execute automatic drive optimization via Commissioning > Drive > Optimization > Start Automatic Optimization.

Ensure axis can move freely through full travel range before optimization

Check Encoder Signals

Monitor encoder feedback in Diagnostics > Drive > Encoder and verify clean sine/cosine signals without dropouts or noise.

Look for consistent amplitude and 90-degree phase relationship

Verify Following Error

Check MD36200 (FOLLOWING_ERROR_LIMIT) and monitor actual following error in Service Display during movement.

Excessive following error indicates feedback or mechanical problems

Test Motor Insulation

Disconnect motor cables and measure winding resistance and insulation resistance using appropriate test equipment.

Power down drive completely and follow lockout/tagout procedures

Check DC Bus Voltage

Monitor DC link voltage in Diagnostics > Drive > Power Section and verify it meets specifications (typically 540-680V for 400V systems).

Low DC bus voltage indicates power supply or regeneration issues

Inspect Drive Status

Review drive status LEDs and check for additional alarms in Alarms > Drive Alarms for related fault conditions.

Multiple simultaneous drive alarms often indicate hardware failure

Verify Power Connections

Check all power cable connections, fuses, and contactors in the electrical cabinet for proper tightness and condition.

Only qualified electricians should inspect high-voltage connections