Chapter5Troubleshooting
38
board faulty servo drive, ensure there is no display, and then power on the servo drive
again. If the display is normal, it indicates that the control board is faulty. In
this case, contact the IMM manufacturer.
Fault Symptom
The motor rotates inversely.
Fault Principle
Output phase sequence wrong
Fault Cause Solution
Motor connection
wrong
Exchange any two of the output UVW cables of the servo drive. Set F0-02
(Command source selection) to 2 (Operation panel) and press
. Then
set A3-00 to 0 and F1-16 to 1, and press
to start motor auto-tuning.
After the motor auto-tuning is complete, set A3-00 to 2.
Pressure feedback
abnormal
In the standby state, view U1-02. The value of U1-02 is 0 on normal
conditions. If A3-10 (Min. pressure) is set to the default value, the value of
U1-02 is below 0.5 and keeps changing. If the viewed value of U1-02 is
abnormal, it indicates that the pressure feedback is abnormal. Set F0-02
(Command source selection) to 2 (Operation panel) and press
. Set
A3-00 to 0 and A3-20 to 1. Then press
to perform AI zero drift auto
correction. After AI zero drift auto correction is complete, set A3-00 to 2. If
the fault persists, check whether the pressure sensor is faulty. If yes, follow
solution 3 in Err46. If not, go to the next step.
Encoder connection
wrong
If the pressure sensor is healthy, check whether the encoder connection is
wrong by referring to the following figure.
If the encoder connection is correct but the fault persists, contact the IMM
manufacturer.
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