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11-6
11-3 Alarm List
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
11
Error and Maintenance
Alarm List
Error
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 main circuit fell
below the specified value while the
operation command (RUN) input was ON.
− √ −
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
Driver overheat The temperature of the driver 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 driver
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 driver.
√ − −
24 0
Error counter overflow The error counter accumulated pulse
exceeds the set value for the Error
Counter Overflow Level (Pn014).
√ √ √
25 0
Excessive hybrid error During full closing control, difference
between position of load from external
scale and position of motor due to encoder
was larger than the pulse number set by
Excessive Hybrid Error Setting (Pn332).
√ − √
26
0
Overspeed The motor rotation speed exceeded the set
value of the Overspeed Level set (Pn513).
√ √ √
1
Overspeed 2 The motor rotation speed exceeded the set
value of the Overspeed Level set 2 (Pn615).
√ √ −
27 0
Command pulse A command pulse frequency error was
detected.
√ √ √
28 0
Pulse regeneration error The pulse regeneration output
frequency exceeded the limit.
√ √ √