12.2 Alarm Displays
12.2.1 List of Alarms
12-9
12
Maintenance
A.C21
Polarity Sensor Error
An error occurred in the
polarity sensor.
Gr.1
No
L
H
L
A.C22
Phase Information Dis-
agreement
The phase information does
not match.
Gr.1
No
L
H
L
A.C50
Polarity Detection Failure
The polarity detection failed.
Gr.1
No
L
H
L
A.C51
Overtravel Detected
during Polarity Detection
The overtravel signal was
detected during polarity
detection.
Gr.1
Yes
L
H
L
A.C52
Polarity Detection Not
Completed
The servo was turned ON
before the polarity was
detected.
Gr.1
Yes
L
H
L
A.C53
Out of Range of Motion for
Polarity Detection
The travel distance exceeded
the setting of Pn48E (Polarity
Detection Range).
Gr.1
No
L
H
L
A.C54
Polarity Detection Failure
2
The polarity detection failed.
Gr.1
No
L
H
L
A.C80
Encoder Clear Error or
Multiturn Limit Setting
Error
The multiturn data for the
absolute encoder was not
correctly cleared or set.
Gr.1
No
L
H
L
A.C90
Encoder Communications
Error
Communications between
the encoder and SERVO-
PACK is not possible.
Gr.1
No
L
H
L
A.C91
Encoder Communications
Position Data Acceleration
Rate Error
An error occurred in calculat-
ing the position data of the
encoder.
Gr.1
No
L
H
L
A.C92
Encoder Communications
Timer Error
An error occurred in the com-
munications timer between
the encoder and SERVO-
PACK.
Gr.1
No
L
H
L
A.CA0
Encoder Parameter Error
The parameters in the
encoder are corrupted.
Gr.1
No
L
H
L
A.Cb0
Encoder Echoback Error
The contents of communica-
tions with the encoder are
incorrect.
Gr.1
No
L
H
L
A.CC0
Multiturn Limit Disagree-
ment
Different multiturn limits have
been set in the encoder and
the SERVOPACK.
Gr.1
No
L
H
L
A.CF1
Reception Failed Error in
Feedback Option Module
Communications
Receiving data from the
Feedback Option Module
failed.
Gr.1
No
L
H
L
A.CF2
Timer Stopped Error in
Feedback Option Module
Communications
An error occurred in the timer
for communications with the
Feedback Option Module.
Gr.1
No
L
H
L
A.d00
Position Deviation Over-
flow
The setting of Pn520 (Exces-
sive Position Deviation Alarm
Level) was exceeded by the
position deviation while the
servo was ON.
Gr.1
Yes
L
L
H
A.d01
Position Deviation Over-
flow Alarm at Servo ON
The servo was turned ON
after the position deviation
exceeded the setting of
Pn526 (Excessive Position
Deviation Alarm Level at
Servo ON) while the servo
was OFF.
Gr.1
Yes
L
L
H
Continued from previous page.
Alarm
Number
Alarm Name
Alarm Meaning
Servo-
motor
Stop-
ping
Method
Alarm
Reset
Possi-
ble?
Alarm Code
Output
ALO1 ALO2 ALO3
