231-C210

Access motor parameters

Navigate to MOD function → Machine Parameters → MP7210.x where x is the axis number from the alarm message.

Always note the original value before making changes for rollback purposes

Verify Tmax value

Check the current Tmax setting against motor manufacturer specifications. Typical servo motor Tmax values range from 100-155°C.

Never set Tmax higher than motor nameplate specifications

Correct the parameter

Enter the correct Tmax value from motor documentation and execute RESET + START to activate the new parameter.

Cross-reference with MP7200.x (temperature monitoring enable) to ensure monitoring is properly configured

Backup current parameters

Use MOD function → Data backup/restore → Machine parameters to save current MP table to external storage.

Always backup before attempting parameter restoration

Restore motor parameters

Load known good motor parameters from backup or re-enter all MP72xx series parameters for the affected axis from machine documentation.

Check MP7220.x (temperature sensor type) and MP7230.x (temperature monitoring delay) during restoration

Verify parameter integrity

Cycle through all motor-related parameters MP7200-MP7299 for the axis to ensure all values are within expected ranges.

Use the TNC's parameter consistency check function if available in your software version

Verify physical motor model

Check the motor nameplate on the affected axis and record the exact model number and temperature specifications.

Ensure machine power is locked out before accessing motor areas

Check axis configuration

Navigate to MOD → Machine Parameters → MP1000-MP1099 series to verify the correct motor type is selected for the axis.

Motor selection affects multiple parameters automatically, not just temperature settings

Reconfigure motor parameters

Select the correct motor type and allow the TNC to auto-populate the appropriate MP72xx temperature parameters, then verify Tmax matches motor specifications.

After motor type change, always perform a complete axis calibration sequence

Identify sensor type

Check motor documentation or wiring diagrams to determine if PTC, PT100, or KTY sensor is installed in the motor.

PTC sensors are most common in older installations, PT100 in newer precision applications

Configure sensor parameter

Set MP7220.x to match actual sensor: 0=no sensor, 1=PTC, 2=PT100, 3=KTY, then adjust MP7210.x Tmax accordingly.

Incorrect sensor type can cause false alarms or inadequate protection

Test temperature monitoring

Monitor actual temperature values in the TNC diagnostic screens during normal operation to verify proper sensor function and scaling.

Temperature should read ambient when cold and gradually increase during operation

Check software version

Navigate to MOD → System info to verify current TNC software version and compare against known compatible versions for your motor configuration.

Document software version before and after any updates for troubleshooting reference

Review parameter format

Consult software release notes for changes to MP72xx parameter formats or valid ranges in your TNC version.

Parameter formats can change between major software versions

Apply software-specific corrections

Adjust parameter format or values according to software version requirements, or consider software downgrade/upgrade if critical incompatibility exists.

Contact Heidenhain technical support for software-specific parameter guidance