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