# Safety Power Supply

This chapter explains the current-, torque-, temperature-, three-phase-current-, and bus-voltage-related protection thresholds in the Safety Power window.

## Before You Begin

Item | What to Check
--- | ---
Device state | Stop motion and disable the drive before changing protection parameters. Make sure the load is supported and the mechanism cannot move unexpectedly when a threshold changes.
Parameter source | Use protection thresholds from project delivery documents, device specifications, or verified field records. Do not copy parameters from an unknown device.
Original-value backup | Click Refresh to read and record the current values before clicking Apply, so you can restore the last verified configuration if a problem occurs.
Applicability | This window alone cannot confirm model, firmware, or hardware applicability. If an item is missing, read-only, or cannot be written, first check the documentation for the current model and the supported firmware range.

High-risk operation: Apply on a safety page writes protection parameters to the controller, and some are persistent. Stop motion, disable the drive, and secure the load before making changes. Do not change protection thresholds while the device is moving or enabled.

## Safety Power

Item | Description | Recommendations
--- | --- | ---
Continuous Current: | Sets the current the drive may output continuously. | Set according to the motor and drive specifications. Do not treat short-term peak capability as continuous capability.
Peak Current Duration: | In ms. A typical range is 0 ms to 11,000 ms. | Set according to load impact and drive specifications. Excessive duration may increase heating and overload risk.
Current: | Sets the three-phase-current limit. A typical setting is the peak current plus approximately 5,000 mA of margin. | Increasing this limit abnormally may conceal a current-sampling, wiring, or power-stage problem.
The Sum Error of Three Phase: | Sets the three-phase-current-error limit. A typical setting is the peak current plus approximately 5,000 mA of margin. | Increasing this limit abnormally may conceal a current-sampling, wiring, or power-stage problem.
Max Phase Current: | Limits the single-phase-current protection threshold. A typical setting is the peak current plus approximately 5,000 mA of margin. | After changing it, perform a low-risk trial run and monitor current, temperature rise, and fault state.
Max Motor Current: | Limits the total-motor-current protection threshold. A typical setting is the peak current plus approximately 5,000 mA of margin. | After changing it, perform a low-risk trial run and monitor current, temperature rise, and fault state.
Max Drive Temperature: | Sets the temperature-protection threshold. A typical range is 65°C to 85°C. | Do not raise the threshold merely to suppress a warning. First check cooling, load, and ambient temperature.
Max Output Torque(‰ ·0x6072): | Limits output torque. A typical range is 100.1% to 300.0%. | The torque limit affects mechanism force, holding force, and overload protection. Set it according to mechanical-safety requirements.

Use the Safety Power window to configure voltage-, current-, torque-, temperature-, and regenerative-braking-related protection thresholds.

The Safety Power page covers voltage, current, torque, and temperature. If changes cause false warnings, heating, noise, or insufficient output, restore the last verified parameters and recheck the device specifications.

## High-Risk Operations

Operation | Risk | Recommendation
--- | --- | ---
Adjust the bus-voltage limits | May make overvoltage or undervoltage protection too permissive or too restrictive. | Set according to the drive and power-supply specifications, then monitor the warning state.
Adjust current limits | May affect output capability and overload protection. | Make small adjustments within the device specifications and monitor current and faults.
Adjust torque limits | May affect output capability, holding force, and mechanical safety limits. | Set according to the device specifications and mechanical-safety requirements.
Adjust temperature limits | May change the temperature-protection trip point. | Set according to the device specifications. Do not raise the threshold merely to suppress a warning.
Adjust position limits | May affect travel limits and mechanical safety. | Verify both directions and the limits at low speed over a short travel.
Adjust speed limits or emergency-stop deceleration | May affect stopping distance, impact, and protection triggering. | Verify against the available safety distance and load inertia.
Adjust stall thresholds or force-control limits | May delay stall protection, cause false warnings, or produce abnormal output. | Start with verified parameters and validate under light load before normal operation.

## Troubleshooting

Symptom | Recommended Action
--- | ---
Frequent warnings or stops after applying settings | Restore the last verified parameters. Check whether thresholds are too narrow, the load has changed, or the power supply is abnormal.
Protection does not trigger as expected | Check whether thresholds are too wide and whether the current control mode matches the actual feedback. Confirm that the firmware supports the parameter.
Some items are missing or read-only | Confirm that the current model, hardware version, firmware version, and project delivery documents support this setting.
Read or write fails | Do not apply repeatedly. First verify the connection, device ID, firmware version, project documentation, and current error state.
Position or speed limits do not match motion behavior | Cross-check Motion, Motor Settings, Feedback Settings, Control Mode, and the protection parameters on this page to avoid conflicting settings.