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Access Spindle Parameters

Navigate to MOD function → Machine Parameters → Spindle Parameters → Power Supply section to locate PowSupplyLimitOfDcVoltage parameter.

Use parameter search function (CTRL+F) to quickly locate power supply parameters

Verify Voltage Range

Check that PowSupplyLimitOfDcVoltage value is within manufacturer specifications (typically 300-800V depending on spindle drive model).

Never exceed maximum voltage ratings specified in spindle drive documentation

Correct Parameter Value

Set PowSupplyLimitOfDcVoltage to appropriate value based on spindle drive specifications and perform parameter reset.

Document original values before making changes for rollback capability

Test LIFTOFF Configuration

Attempt to reconfigure LIFTOFF function through spindle setup menu to verify parameter acceptance.

Ensure spindle is at complete stop before testing LIFTOFF configuration

Locate DC Link Parameter

Access MOD → Machine Parameters → Spindle → Power Supply and find PowSupplyDcLinkVoltageForSpindleStop parameter.

This parameter is often grouped with other power monitoring settings

Validate Voltage Threshold

Verify the parameter value is logical compared to normal operating DC link voltage (typically 10-15% below normal operating voltage).

Setting this value too low may cause nuisance spindle stops during normal operation

Cross-Reference Drive Documentation

Consult spindle drive manual for recommended DC link voltage thresholds and adjust parameter accordingly.

Keep drive documentation readily accessible for parameter verification

Perform System Validation

Save parameters, perform PLC reset, and test LIFTOFF configuration to ensure proper acceptance of new voltage threshold.

Monitor spindle behavior during first few operations after parameter change

Review All Power Parameters

Navigate to complete power supply parameter section and document all voltage-related settings including limits, thresholds, and monitoring values.

Create a parameter comparison table to identify conflicts more easily

Identify Parameter Conflicts

Compare PowSupplyLimitOfDcVoltage with PowSupplyDcLinkVoltageForSpindleStop to ensure logical relationship (stop voltage < limit voltage).

Illogical parameter relationships can cause unpredictable spindle behavior

Establish Proper Hierarchy

Set parameters in logical order: normal operating voltage > limit voltage > stop voltage > minimum voltage threshold.

Use 10-15% increments between voltage levels for stable operation

Validate Configuration

Test LIFTOFF setup with corrected parameter hierarchy and monitor system response during spindle operations.

Perform initial tests at reduced spindle speeds to verify proper parameter interaction

Backup Current Configuration

Create complete backup of machine parameters via MOD → Data Management → Backup Machine Data before attempting recovery procedures.

Always maintain multiple backup generations for critical parameter sets

Reset Spindle Parameters

Perform selective parameter reset for spindle section via MOD → Machine Parameters → Reset → Spindle Parameters Only.

This will reset all spindle parameters to default values requiring complete reconfiguration

Restore Known Good Configuration

Load previously saved parameter backup or manually reconfigure power supply parameters using manufacturer specifications.

Keep a master parameter sheet with all critical spindle settings documented

Verify System Integrity

Perform complete spindle function test including LIFTOFF configuration to ensure all parameters are properly restored and functional.

Test all spindle functions thoroughly before returning machine to production