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9.2 Common Fault and Resolution
During the servo driver using process, the following faults may occur. Please
conduct simple fault analysis by referring to the methods below:
No.
Fault
Phenomenon
Possible Cause Solution
1
No display upon
power-on
1. The driver has
no input power
supply.
2. 8-core bus
connecting with
the drive board
and control
bard is in poor
contact.
3. The internal
parts of the
driver are
damaged.
1. Check the input power
supply.
2. Plug/unplug the 8-core
bus once again.
3. Consult the manufacturer.
2
HC is displayed
upon power-on
1. 4-core bus
connecting with
the drive board
and control
bard is in poor
contact.
2. Other parts of
the driver are
damaged.
1. Plug/unplug the 4-core
bus once again.
2. Consult the manufacturer.
3
“ERR23” alarm is
displayed upon
power-on.
1. The motor or
the output line
is short
1. Measure the insulation of
the motor and output line
with magneto-ohmmeter.
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