What causes Heidenhain alarm 231-4810?

Mechanical binding or collision on the axis causing excessive current demand. Motor winding fault — phase-to-phase short or ground fault. Motor power cable insulation failure causing a short circuit. Drive current limit parameter set below motor rated current. Servo motor bearing failure increasing friction and current draw. Acceleration parameters too aggressive causing sustained peak current.

How do I fix Heidenhain alarm 231-4810?

1. Check the axis for mechanical binding by moving it manually with servo power off. 2. Inspect motor power cables for insulation damage, chafing, or loose connections. 3. Measure motor winding resistance across all phases — check for imbalance or ground faults. 4. Review drive current limit parameters against motor nameplate data. 5. Allow the motor to cool and retry with reduced acceleration and load. 6. If motor winding fault is confirmed, the motor requires replacement.

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Heidenhain Controller

Servo/Axis · Intermediate · 30-120 minutes

Alarm 231-4810

Heidenhain 231-4810 - 4810 CC (log): actual current value too high

Alarm 231-4810 indicates the actual current value in the servo drive has exceeded the maximum allowable threshold. This typically occurs due to mechanical binding, excessive cutting loads, or servo drive parameter misconfiguration causing overcurrent conditions.

HeidenhainServo/AxisIntermediate30-120 minutes

231-4810

Heidenhain 231-4810 - 4810 CC (log): actual current value too high

4810 CC (log): actual current value too high

Root Cause Summary

Alarm 231-4810 indicates the actual current value in the servo drive has exceeded the maximum allowable threshold. This typically occurs due to mechanical binding, excessive cutting loads, or servo drive parameter misconfiguration causing overcurrent conditions.

Safety

Refer to Heidenhain service manual
Ensure qualified technician performs repairs

Causes and Fixes

1
Check Axis Movement
Use Manual Operation mode to jog each axis slowly and check for binding, unusual noise, or resistance.
Move axes at reduced feedrate (10-25%) to avoid damage
2
Inspect Mechanical Components
Check ball screws, linear guides, and coupling for debris, damage, or inadequate lubrication.
Look for metal chips or coolant buildup on linear guides
3
Verify Machine Geometry
Check if workpiece, fixture, or tool is interfering with machine travel using Setup > Position Display.
Use 3D tool path simulation if available to verify clearances

DIY Feasiblemedium confidence

Call a technician if:

·Motor or drive hardware replacement needed
·Servo parameter tuning required
·Mechanical repairs beyond basic maintenance

Prevention

Regular lubrication of linear guides and ball screws
Monitor cutting tool condition
Maintain proper chip evacuation
Periodic review of actual vs. programmed current values

Common Mistakes

Ignoring gradual increase in current draw before alarm
Adjusting current limits without addressing root cause
Not checking for mechanical binding before parameter changes
Overlooking encoder signal quality issues

Related Alarms

231-5100 231-4800 231-4820 231-4830

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Always verify with your machine manual or a certified technician before performing service procedures.