Servo Position Error

Servo drive reports position following error exceeds tolerance. Axis stopped to prevent damage.

Probable Causes (ranked)

• Mechanical binding or obstruction in axis travel path
• Encoder feedback cable loose, damaged, or disconnected at motor
• Servo gain parameters incorrect — too low causes sluggish response, too high causes oscillation
• Motor brake not releasing — brake solenoid or power issue
• Mechanical coupling between motor and load slipping — keyway or setscrew

Fix Steps

1. 1 Check for mechanical obstruction — disable drive, try to move axis by hand
2. 2 Inspect encoder cable at motor connector and drive connector — reseat both ends
3. 3 Listen for motor brake release click when drive enables — no click means brake issue
4. 4 Verify coupling between motor shaft and load — check setscrew torque and keyway condition
5. 5 Check servo drive fault display for specific sub-code — note it before resetting
6. 6 Reset and home the axis before attempting normal operation

Suggested Replacement Parts

Parts matched to fault category: Servo Drive

Prices are estimates. Verify part numbers match your equipment before ordering.

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