Chapter 9 Troubleshooting and Countermeasures
ACH200 Series High Voltage Variable Frequency Speed Control System Operating Manua
137
and relearn
2051
Synchronous
motor
encoder
direction learning failed
Encoder broken wire or signal interference
or motor blocking
2052
Z pulse not detected by synchronous
machine
Check whether the PG card is connected
correctly
2053
Synchronous machine Z pulse
deviation is too large
Check whether the PG card is connected
correctly
Check whether the PG card parameters are
set correctly
2060
Motor rated current deviates too
much from AC drive current
Greater than 10 times the rated current of
the AC drive or less than 1/15 the rated
current of the AC drive
2061
Maximum frequency is limited
The maximum frequency of the AC drive
set is less than the rated frequency of the
motor, reset the maximum frequency of the
AC drive and the upper limit frequency and
then learn again
2062
Frequency converter and motor
current deviation is too large
Check whether the difference between AC
drive power level and motor power level is
too large
2064
Motor no-load current learning
value is too large or too small
1. Check whether the input motor nameplate
parameters are correct
2. Whether the motor control mode
selection matches the motor
2065
Motor mutual inductance learning
value is too large or too small
1. Check whether the input motor nameplate
parameters are correct
2. Whether the motor control mode
selection matches the motor
2066
Motor rotor resistance learning
value is too large or too small
1. Check whether the input motor nameplate
parameters are correct
2. Whether the motor control mode
selection matches the motor
2090
Stop command is given during
learning
Failure to complete parameter learning,
need to relearn