230-042A

Access machine parameter overview

Press MOD key, select 'Machine Parameters' from setup menu, navigate to MP7750-MP7799 range to check unbalance monitoring parameters.

Use search function in parameter list by entering MP7750 directly

Verify parameter existence

Check if MP7750 (unbalance monitoring enable), MP7751 (monitoring threshold), and related parameters are present and not showing 'undefined'.

Do not modify parameters without machine manufacturer documentation

Load default parameter set

If parameters are missing, load machine-specific parameter backup from Setup > Machine Parameters > Load Parameters, select appropriate .PRM file.

Always backup current parameters before loading new ones

Restart control system

Perform controlled shutdown via MOD > System Shutdown, then restart TNC to initialize new parameter configuration.

Ensure all programs are saved before shutdown

Check parameter file integrity

Navigate to MOD > File Management > TNC:\system\, examine machine.prm file size and modification date for anomalies.

Compare file size with known good backup if available

Restore from backup

Load last known good parameter backup via Setup > Machine Parameters > Load Parameters, select verified .PRM backup file.

Verify backup date and source before loading to avoid configuration loss

Validate unbalance parameters

After restore, verify MP7750 through MP7799 parameters are properly loaded and show correct values for your spindle configuration.

Cross-reference with machine manufacturer's parameter documentation

Test unbalance monitoring

Enable unbalance monitoring via MP7750=1 and run test spindle cycle to verify alarm clears and monitoring functions properly.

Check software version and options

Press MOD key, select 'System Info' to verify TNC software version and confirm unbalance monitoring option is licensed and installed.

Note down exact software version and option codes for reference

Verify feature licensing

In System Info, check if unbalance monitoring feature appears in installed options list, confirm license key validity.

Contact Heidenhain if licensed features appear missing

Reinstall parameter template

Access Setup > Machine Parameters > Load Template, select appropriate machine type template to restore missing parameter definitions.

Choose template matching your exact machine configuration

Configure unbalance parameters

Set MP7750=1 to enable monitoring, configure MP7751-MP7755 according to spindle specifications and manufacturer recommendations.

Verify spindle drive configuration

Check machine parameters MP3000-MP3099 for spindle configuration, ensure drive type matches installed hardware requiring unbalance monitoring.

Compare MP3001 (spindle drive type) with actual installed drive model

Check drive system parameters

Navigate to MP7700-MP7749 range to verify spindle monitoring parameters are properly configured for your specific drive system.

Incorrect drive parameters can cause spindle damage

Configure unbalance monitoring parameters

Set appropriate values for MP7750 (enable), MP7751 (threshold), MP7752 (filter time) based on spindle drive manufacturer specifications.

Start with conservative threshold values and adjust based on testing

Validate configuration

Run spindle test cycle at various speeds to confirm unbalance monitoring operates correctly without false alarms.