11-8
11-3 Alarm List
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
  11
Troubleshooting and Maintenance
39
0
Excessive analog input 1 A current exceeding the Speed 
Command/Torque Command Input 
Overflow Level Setting (Pn424, Pn427 
or Pn430) was applied to the analog 
command input (pin 14).
√√√
1
Excessive analog input 2
√√√
2
Excessive analog input 3
√√√
40 0
Absolute encoder system 
down error 
The voltage supplied to the absolute 
encoder is lower than the specified value.
√√−
41 0
Absolute encoder counter 
overflow error 
The multi-rotation counter of the absolute 
encoder exceeds the specified value.
√−−
42 0
Absolute encoder 
overspeed error 
The motor rotation speed exceeds the 
specified value when only the battery power 
supply of the absolute encoder is used.
√√−
43 0
Encoder initialization error An encoder initialization error was 
detected.
√−−
44 0
Absolute encoder 1-
rotation counter error 
A 1-turn counter error was detected.
√−−
45 0
Absolute encoder multi-
rotation counter error 
A multi-rotation counter error or 
phase-AB signal error was detected.
√−−
47 0
Absolute encoder status 
error 
The rotation of the absolute encoder is 
higher than the specified value.
√−−
48 0
Encoder phase-Z error A serial incremental encoder phase Z 
pulse irregularity was detected.
√−−
49 0
Encoder CS signal error A logic error was detected in the CS 
signal for serial incremental encoder.
√−−
50
0
External encoder 
connection error
An error was detected in external 
encoder connection.
√−−
1
External encoder 
communications data error
An error was detected in external 
encoder communications data.
√−−
51
0
External encoder status 
error 0
An external encoder alarm code was 
detected.
√−−
1
External encoder status 
error 1
√−−
2
External encoder status 
error 2
√−−
3
External encoder status 
error 3
√−−
4
External encoder status 
error 4
√−−
5
External encoder status 
error 5
√−−
Alarm 
number
Error detection function
Detection details and probable 
cause
Attribute
Main Sub
History
Can be 
cleared
Immediate 
stop *1
ABS
ABS