1. Driver Malfunction
Aging or damaged internal electronic components in the driver will trigger an alarm and prevent normal operation.

2. Lead Screw Too Tight/Jailed
An overly tight lead screw creates excessive running resistance, causing the motor to overheat and triggering an automatic alarm.

3. Guide Rail Slider Seizure
A stuck or seized slider prevents the motor from moving, causing the driver to immediately alarm and stop.

4. Limit Switch Malfunction
A damaged or misaligned limit switch will send incorrect signals to the system, which may mistakenly interpret as a limit hit, triggering an alarm.

5. Motor and Driver Mismatch
Incompatible current and power ratings during selection, such as a high-current driver with a small motor, can easily lead to abnormal current and overheating, triggering an alarm.

6. Poor ambient heat dissipation (most common) A broken cooling fan, poor chassis ventilation, high ambient temperature, or moisture can cause the drive to overheat and trigger its self-protection mechanism. This is the most easily overlooked cause of the alarm.