231-C3E0

Access Motor Parameters

Navigate to MOD → Machine Parameters → Axes → Select affected axis → Motor parameters MP720-MP799 section.

Always backup current parameters before making changes using the parameter export function.

Verify MP720 Motor Rated Voltage

Check MP720 value against motor nameplate specifications. Ensure voltage matches exactly (typically 230V, 400V, or 480V for servo motors).

Never guess motor voltage values - always reference the physical motor nameplate or technical documentation.

Correct Voltage Parameter

Enter correct motor rated voltage in MP720, save parameters, and perform axis reference run to verify acceptance.

Use the motor auto-setup wizard in newer TNC versions to automatically populate correct motor parameters.

Validate Drive Acceptance

Monitor PLC status and verify no additional motor-related alarms appear during next power cycle.

Verify Physical Motor Installation

Check motor nameplate voltage rating and compare with existing MP720 parameter value in machine parameters.

Ensure power is locked out before inspecting motor nameplate data.

Update Complete Motor Parameter Set

Access MOD → Machine Parameters → Motor section and update MP720 (voltage), MP721 (current), MP722 (speed), and MP723 (power) to match new motor.

Update all motor parameters as a set - voltage alone may not resolve all compatibility issues.

Reconfigure Drive Matching

Verify drive amplifier voltage range compatibility with new motor voltage rating through drive parameter check.

Mismatched drive/motor voltage combinations can cause permanent damage to drive electronics.

Perform Motor Commissioning

Execute motor auto-tuning sequence and verify proper axis movement within expected performance parameters.

Check Parameter Integrity

Navigate to MOD → Machine Parameters → Axes and review all motor parameters MP720-MP730 for obviously incorrect or corrupted values.

Look for values like 0, negative numbers, or extremely high values that indicate data corruption.

Restore from Backup

Load known good parameter backup via MOD → Data Management → Load Parameters if recent backup is available.

Ensure backup compatibility with current TNC software version before loading.

Manual Parameter Reconstruction

If no backup available, manually enter correct motor parameters from motor documentation, starting with MP720 voltage rating.

Document all parameter changes for future reference and create new backup immediately after correction.

Verify System Stability

Perform multiple power cycles and axis reference runs to ensure parameter corruption has not recurred.

Access Drive Configuration

Connect to drive amplifier via service interface and check internal voltage range configuration parameters.

Drive parameter changes require specialized knowledge - document original settings before modifications.

Verify Drive Voltage Capability

Confirm drive amplifier model supports the voltage rating specified in TNC parameter MP720 by checking drive specifications.

Drive model numbers typically indicate voltage capability - verify compatibility before proceeding.

Synchronize Drive and TNC Settings

Adjust either drive internal voltage settings or TNC MP720 parameter to create compatible configuration.

Incorrect drive voltage settings can damage both drive and motor - verify all settings before applying power.

Test Drive Communication

Verify proper TNC-to-drive communication and monitor for any additional configuration-related alarms.

Check TNC Software Version

Navigate to MOD → System Info → Software Version and note current TNC software revision and build date.

Compare with previous software version documentation to identify parameter range changes.

Review Software Release Notes

Check Heidenhain technical documentation for motor parameter range changes in current software version.

Software downgrades may cause data loss - consult Heidenhain before attempting version changes.

Adjust Parameters for New Limits

Modify MP720 motor voltage parameter to comply with new software validation limits while maintaining motor compatibility.

Contact Heidenhain technical support for guidance on parameter migration after software updates.

Validate Updated Configuration

Perform comprehensive axis testing to ensure motor performance remains acceptable with adjusted parameters.