Chapter 10 Troubleshooting
ASDA-A2R Series
10-10
Revision December, 2014
10.4 Causes and Corrective Actions
Alarm Display
：
Over current
Causes
Checking Method
Corrective Actions
The drive output is
short-circuit
Check if the wiring between the
motor and the drive is correct and
see if the wire is short-circuited.
Eliminate short-circuit and avoid
metal conductor being exposed.
The motor wiring is in
error.
Check if the wiring steps are
correct when connecting the
motor to the drive.
Rewiring by following the wiring
description from the user
manual.
IGBT is abnormal
The temperature of the heat sink
is abnormal
Send the drive back to the
distributors or contact with Delta
The control parameter
setting is in error.
Check if the setting value
exceeds the default setting
Setting back to the default
setting and then gradually adjust
the value.
Unreasonable
command
Check if the command doing
reasonable acceleration time.
Less steep command used or
filter applying to smooth
command.
：
Over voltage
Causes
Checking Method
Corrective Actions
The input voltage of the
main circuit is higher
than the rated
allowable voltage.
Use the voltmeter to see if the
input voltage of the main circuit is
within the rated allowable voltage
value. (please refer to Chapter
12.1)
Apply to the correct power
supply or serial voltage
regulator.
Wrong power input
(incorrect power
system)
Use the voltmeter to see if the
power system matches the
specification.
Apply to the correct power
supply or serial adaptor.
The hardware of the
servo drive is
damaged.
Use the voltmeter to see if the
input voltage of the main circuit is
within the rated allowable voltage
value but still shows the error.
Send the drive back to the
distributors or contact with Delta.
：
Under voltage
Causes
Checking Method
Corrective Actions
The input voltage of the
main circuit is lower
than the rated
allowable voltage.
Check if the input voltage wiring
of the main circuit is normal.
Re-confirm the voltage wiring.
No power supply for
the main circuit.
Use the voltmeter to see if the
voltage of the main circuit is
normal.
Check the power switch