11-6
11-3 Alarm List
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
11
Troubleshooting and Maintenance
Alarm List
Alarm
number
Error detection function
Detection details and probable
cause
Attribute
Main Sub
History
Can be
cleared
Immediate
stop *1
11 0
Control power supply
undervoltage
The DC voltage of the control circuit is
below the specified value.
−√−
12 0
Overvoltage The DC voltage in the main circuit is
abnormally high.
√√−
13
0
Main power supply undervoltage
(Insufficient voltage between P
and N)
The DC voltage of the main circuit is
low. −√−
1
Main power supply
undervoltage
(AC cut-off detection)
A location was detected where the
main circuit AC power supply is cut off. −√−
14
0 Overcurrent Overcurrent flowed to the IGBT. √−−
1 IPM error
Motor power line ground fault or short circuit.
√−−
15 0
Servo Drive overheat The temperature of the Servo Drive
radiator exceeded the specified value.
√−√
16 0
Overload
Operation was performed with torque
significantly exceeding the rating for several
seconds to several tens of seconds.
√√−
18
0
Regeneration overload The regenerative energy exceeds the
processing capacity of the
Regeneration Resistor.
√−√
1
Regeneration Tr error An error was detected in a Servo Drive
regeneration drive Tr.
√−−
21
0
Encoder communications
disconnection error
The encoder wiring is disconnected.
√−−
1
Encoder communications
error
An encoder communications error
was detected.
√−−
23 0
Encoder communications
data error
Communications cannot be performed
between the encoder and the Servo
Drive.
√−−
24
0
Error counter overflow The error counter accumulated pulse
exceeds the set value for the Error
Counter Overflow Level (Pn014).
√√√
1
Excessive speed error The difference between the internal
position command speed and the
actual speed (i.e., the speed error)
exceeded the Excessive Speed Error
Setting (Pn602).
√√√
25 0
Excessive hybrid error
During fully-closed control, difference
between position of load from external
encoder and position of motor due to
encoder was larger than the pulse number
set by Excessive Hybrid Error Setting
(Pn332).
√−√
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