65
Alarm
code
Alarm type Possible alarm causes Solutions
AL.oL2
Motor overload
The motor overload protection factor
setting is incorrect.
Set the overload protection factor of motor correctly.
The motor is blocked or the sudden
change of load is too large.
Check the load
The universal motor runs at low speed
for a long time, with heavy load.
If long-term low-speed running is required, special
motor should be used.
The grid voltage is too low. Check the grid voltage
V/F curve is improper. Set V/F curve and torque increase correctly
AL.EEP
EEPROM
read/write
fault
The read/write error of the control
parameters occurs.
Reset by pressing the STOP/RESET key, seek for
service support
AL.SC1
Abnormal
serial port
communication
The baud rate is set improperly. Set the baud rate properly.
Serial port communication error
Reset by pressing the STOP/RESET key, seek for
service support
The fault alarm parameters are set
improperly.
Modify the P15.03 and P97.00 settings
The host device does not work.
Check if the host device is working and if the wiring is
correct.
AL.rLy1
Abnormal
contactor
The grid voltage is too low. Check the grid voltage
The contactor is damaged.
Replace the contactor of the main circuit, seek for
service support
The power-up buffer resistance is
damaged.
Replace the buffer resistance, seek for service
support
The control circuit is damaged. Seek for service support
Input phase loss Check the input R.S.T. wiring
AL.EGL
External
reference
command lost
During the frequency main reference or
the torque command selection analog
current reference, the analog reference
signal is disconnected or too low (less
than 2mA).
Check the wiring or adjust the input type of the
reference signal
AL.24v
Control board
24V power
short circuit
Short circuit of P24 and terminal COM
Confirm whether the wiring of P24 and COM is
correct
The interface board circuit is damaged. Replace the interface board, seek for service support
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