Brushless Motor Driver SEH400RB
7Alarm description and fault handling
7.1Alarm code description
When over voltage, or the signal of the Hall sensor is wrong, etc., the following situations will occur:
1. The ALM port of the driver is automatically connected to the GNDE port, the ALM port becomes low
level, and an alarm signal is sent to the upper computer (In this case, wiring operation is required to send a
signal to the upper computer).
2. The motor will stop naturally and the motor output shaft will turn freely.
After a fault alarm occurs, you can press MODE-> P-05 through the display panel and press the SET button
to to view the alarm code.
Alarm Code Alarm name
Alarm Reasons
Troubleshooting
AL00
No error
-
-
AL02
Over temperature
1. There is a foreign object blocking the fan
or dust accumulation;
2. The motor does not match the driver;
3. The drive is damaged;
1. Clean the driver;
2. Re-match the motor and driver
selection;
3. Replace the driver;
AL05
Hall error
1. Check whether the motor sensor cable is
firmly connected
2. Check whether the Hall element in the
motor is damaged;
3. Internal communication error of the
drive;
Automatic recovery after the fault
is cleared;
AL08
Under speed
1. Check whether the set maximum speed
is not greater than the rated speed of the
motor;
2. Check whether the number of pole pairs
is set correctly;
3. Try to stop the motor or power on again
to reset the alarm
；
The time when the feedback speed
is lower than the set speed exceeds
the set underspeed time, and the
default underspeed time is 2
seconds;
AL09
Module alarm IPM Power Module Alarm
1. Detect whether there is dust
entering;
2. Try to lengthen the acceleration
and deceleration time;
3. Re-power;
4. If the alarm still occurs,
replace the driver
AL10 —
AL26
Hardware failure Please check for iron filings, corrosion,
dust
Re-power on, if it still doesn't
work, replace the controller;
AL40 —
AL43
Storage error Please check for iron filings, corrosion,
dust
