221-0024

Access Machine Parameters

Press MOD key, select 'Machine Parameters' from setup menu, navigate to MP1420 ACCELERATION section.

Use search function in parameter list by typing '1420' for quick access

Check Axis Acceleration Values

Verify MP1420.x (where x = axis number) shows valid acceleration values in mm/s² or inch/s². Zero or blank values trigger this alarm.

Record original values before making changes for rollback capability

Set Appropriate Acceleration

Enter manufacturer-specified acceleration values typically 1000-5000 mm/s² for linear axes, 10000-50000 deg/s² for rotary axes.

Start with conservative values and optimize later during commissioning

Save and Restart

Save parameters with CTRL+S, perform controlled restart via MOD > Reset > Controller restart to activate new settings.

Check Parameter File Status

Navigate to MOD > File Management > TNC:\ directory, verify machine parameter file exists and shows recent modification date.

Never delete parameter files without verified backup

Restore from Backup

Load known good parameter backup via MOD > Data Transfer > Import Parameters, select verified .PRM file from backup location.

Always verify backup file date matches last known good configuration

Verify Parameter Integrity

After restore, check MP1420 acceleration values are populated for all configured axes in the system.

Use parameter comparison function to verify against reference machine if available

Perform System Validation

Execute controlled restart and verify alarm clears, test basic axis movements in manual mode to confirm proper acceleration behavior.

Review Axis Assignment

Check MP110 AXIS_ASSIGNMENT to identify all configured axes, note any recent additions or modifications to axis configuration.

Cross-reference with drive configuration to ensure all physical axes are properly mapped

Match Acceleration Parameters

Ensure each axis in MP110 has corresponding MP1420.x acceleration parameter defined with non-zero value.

Mismatched axis numbers between MP110 and MP1420 will cause motion errors

Configure Missing Accelerations

Add acceleration values for newly configured axes based on mechanical specifications and drive capabilities from machine documentation.

Copy acceleration values from similar axes as starting point, then optimize based on performance requirements

Test Axis Configuration

Perform manual axis movements to verify proper acceleration behavior and smooth motion profiles for all configured axes.

Check Drive Status

Access MOD > Diagnosis > Drive Status to verify all servo drives are operational and communicating properly with TNC.

Drive faults can prevent proper parameter validation and cause secondary alarms

Verify MP1421 Acceleration Limits

Check MP1421 ACCELERATION_LIMIT values are properly set and higher than MP1420 working acceleration values for each axis.

Acceleration limits should be 120-150% of working acceleration values for safety margin

Review Drive Configuration

Verify servo drive internal acceleration parameters match or exceed TNC settings, check drive documentation for maximum acceleration specifications.

Use drive commissioning software to verify internal acceleration limits align with TNC parameters

Synchronize Parameters

Adjust either TNC acceleration parameters or drive limits to ensure compatibility, restart system to validate parameter acceptance.