Chapter 7 Faults and Solutions
135
Motor
overload
Err11
1. Is the motor protection
parameter P9-01 suitable?
2. Is the load too large or the
motor stalls?
3, the frequency converter
selection is too small
1, set this parameter correctly
2. Reduce the load and check
the motor and mechanical
conditions
3. Select a frequency converter
with a larger power level
Input phase
loss
Err12
1, three-phase input power is
not normal
2. The drive board or lightning
protection board is abnormal.
1. Troubleshooting the
peripheral lines
2, seeking technical support
Output
phase loss
Err13
1. The lead of the inverter to
the motor is not normal.
2. The three-phase output is
unbalanced when the motor is
running.
3. The driver board or module
is abnormal.
1, eliminate peripheral faults
2. Check if the three phases of
the motor are normal.
3. Seek technical support
Module
overheating
Err14
1, the ambient temperature is
too high
2. Air duct blockage or fan
damage
3, module thermistor is
damaged
4, the inverter module is
damaged
1, reduce the ambient
temperature
2, clean the air duct or replace
the fan
3, replace the thermistor
4. Replace the inverter module
External
device
failure
Err15
Check external terminal input
fault signal
Reset operation
communica
tion fail
Err16
1, the host computer is not
working properly
2, the communication line is
not normal
3. The communication
1. Check the wiring of the upper
computer
2, check the communication
cable
3, correctly set the