194
Fault
code
Fault type Possible fault cause Solutions
temperature
sampling
disconnection
The temperature sampling wire is
poorly connected.
Check the temperature sampling wire connection
Er.10v
Control board ±10V
power short circuit
±10V grounding Confirm whether the ±10V wiring is correct
The interface board circuit is damaged.
Replace the interface board, seek for service
support
Er.rEF
Abnormal internal
over-current
reference
The control board circuit is damaged. Seek for service support
Er.PIL
Wrong PID limit
value setting
The PID lower limit set value exceeds
PID upper limit set value
Adjust the PID upper / lower limit set value
All the possible alarm types for MV200 are summarized as shown in table 7-2. For details, please refer to the
group P97 function code setting. If the fault disappears automatically during the running process, the drive will
also automatically reset to the status before the alarm (except AL.SC1, for details, please refer to the group
P97 function code description).
Table 7-2 Alarm code table
Alarm
code
Alarm type Possible alarm causes Solutions
AL.oL1 Drive overload
The motor parameters are incorrect. Perform the parameter auto-tuning of the motor
The load is too large. Adopt the drive with higher power
The DC braking amount is too large.
Reduce the DC braking current and lengthen the
braking time
When instantaneous stop happens,
restart the rotating motor
Set the start mode P08.00 as the speed tracking
restart function
The acceleration time is too short. Lengthen the acceleration time
The grid voltage is too low. Check the grid voltage
V/F curve is improper. Adjust V/F curve and torque increase
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
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