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Why does the system report "Crucial Position Error", "Auto Commutation Error", or "Cannot Enable the Motor" during first homing after power‑up?
After a power cycle, the homing routine may fail to auto‑commutate and require manual commutation. Right‑click the controller, go to Add Component > Setup > Adjuster Wizard > Axis Setup and Tuning > Commutation. Ensure the axis is at mid‑stroke; if not, manually move it there. Click Start Commutation Program and wait for completion. Then perform homing normally. Save the result to flash to fix the issue.
Why does "Motor Overcurrent" occur during homing?
Do not repeatedly run homing, as it risks motor damage. First, check that shipping locks are removed and that the axis can be moved manually over full travel without power. If there is no mechanical interference, perform a manual commutation.
Why does "Power Supply too low" appear during homing?
This indicates the drive/controller has logic power but missing main power. If multiple axes report this, check if the main power to the machine is on and if the drive's power cables are securely connected. For a single axis, inspect the three‑phase power cables at the drive and the connector on the platform side.
Tip (ACS systems): Go to Add Component > Setup > Adjuster Wizard > Axis Setup and Tuning > Current Loop > Check Step Response to quickly verify main power supply.
Why does an error containing "Setup" appear after power‑up?
This is a network configuration mismatch between the controller and drives. Check all Ethernet cables between them for correct connections, missing plugs, or reversed IN/OUT. If a drive has been replaced, run the setup again to re‑identify components.
Why does the axis hit a limit switch and stop with an error instead of reversing during homing?
This is usually caused by incorrect limit switch configuration. To diagnose: Go to Add Component > Setup > Adjuster Wizard > Verification > Switches, manually move the axis full travel and observe the Fault LED. Normally, it should be green within travel, turning red at each limit with a valid limit reading.
Why does the axis exhibit vibration or abnormal noise during homing after changing the load?
Factory parameters are typically tuned for simulated customer workload or no‑load conditions. Changing loads, adding accessories, or integrating additional axes may cause squealing or vibration noise – this is normal and depends on the magnitude of load variation and stage rigidity. Re‑tune the PID gains or contact technical support for remote optimization to match the actual operating conditions.
Why does "Encoder not Connect" appear sometimes? / Why do the axis feedback values not change?
When an encoder error occurs, right‑click the controller, select the “eye” icon to create a watch, and adjust the axis number in the “from/to” fields. If feedback values remain static, go to Add Component > Setup > Adjuster Wizard > Verification > Motor, click Clear Faults to clear the encoder error. If the red fault does not clear, go to Components > Calculate Parameters, click Calculate Parameters, then Apply Changes. The feedback values should then resume updating.
Why can't I find the controller on first connection? / Why does connection fail after finding the controller?
The controller's default IP address is 10.0.0.100. After connecting to the host, set the corresponding network adapter IP to 10.0.0.xx (xx cannot be 100). If not found, try pinging the controller IP from the command prompt to check direct connectivity. Also verify that the ACS software driver UMD (User Mode Driver, green arrow icon) is running in the taskbar. Hardware‑wise, check that the controller's LAN LEDs show one solid and one blinking, and that the Ethernet cable is intact.
Why does the ACS MMI software crash when clicking certain functions? Why are some features missing from Add Component > Diagnostics and Monitoring?
These issues are typically caused by incomplete software installation. A classic sign is the absence of FRF Analyzer and similar tools under Diagnostics and Monitoring. Reinstall the software – do not close the installation window until the progress bar completes and the “Finish” button appears.
Why does the software report a disconnection after the drive has been powered on for a short time?
1. Check that the 24V logic power connector to the controller is securely fastened – loose terminals may cause voltage instability, leading to controller resets or even damage in severe cases.
2.Poor contact or interference at the Ethernet port – replace with a Cat6a cable.
Why does an axis that previously operated normally fail to home correctly or report signal disconnection after relocation?
The readhead-to-linear‑scale gap has strict tolerance requirements. Severe vibration or external shock during relocation may tilt the readhead, causing signal dropout or loss. In such cases, the stage cannot be used and must be returned to the factory for repair.
Why can't the system find the home position even though cables are connected and the program remains unchanged?
First, check the signal interface to verify whether the mark signal triggers properly. If it does, reload the factory‑default program package. If it does not trigger, for open‑frame stages, manually move the stage beyond the home signal area and check if the home magnet has come loose; for semi‑closed stages, shine a strong light from the side to visually inspect.