Chapter 10 Troubleshooting
10.2 Potential Cause and Corrective Actions
Servo Drive Fault Messages
: Overcurrent
Potential Cause Checking Method Corrective Actions
Short-circuit at drive
output (U, V, W)
1. Check the wiring connections between
drive and motor.
2. Check if the wire is short-circuited.
Repair the short-circuited and
avoid metal conductor being
exposed.
Motor wiring error
Check if the wiring steps are all correct
when connecting motor to drive.
Follow the wiring steps in the
user manual to reconnect
wiring.
IGBT error Heat sink overheated
Please contact your distributor
for assistance or cont
act with
Delta.
Control parameter
setting error
Check if the setting value exceeds the
factory default setting.
Set the setting back to factory
default setting and then reset
and adjust the parameter
setting again.
Control command
setting error
Check if the control input command is
unstable (too much fluctuation).
1. Ensure that input command
frequency is stable (t
oo
much fluctuation).
2. Activate filter function.
: Overvoltage
Potential Cause Checking Method Corrective Actions
The main circuit
voltage has
exceeded its
maximum allowable
value.
Use voltmeter to check whether the input
voltage falls within the rated input
voltage.
(For voltage specification, please refer to
section 12.1 in Chapter12.)
Use correct power supply or
stabilizing power or using
series transformer.
Input power error
(Incorrect power
input)
Use voltmeter to check whether the input
voltage is within the specified limit.
Use correct power supply or
stabilizing power or using
series transformer.
The hardware of the
servo drive is
damaged.
Use voltmeter to ensure that the main
circuit input voltage falls within the
specified limit,
If the error does not clear even
if the main circuit input
voltage falls within the
specified limit, please contact
your distributor for assistance
or contact with Delta.
Revision January 2011 10-7
Call 1(800)985-6929 for Sales
Call 1(800)985-6929 for Sales
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