15.2 Alarm Displays
15.2.1 List of Alarms
15-9
15
Maintenance
A.C50
Polarity Detection
Failure
The polarity detection failed.
Gr.1
No
L
H
L
A.C51
Overtravel Detected
during Polarity Detec-
tion
The overtravel signal was detected during
polarity detection.
Gr.1
Yes
A.C52
Polarity Detection Not
Completed
The servo was turned ON before the
polarity was detected.
Gr.1
Yes
A.C53
Out of Range of
Motion for Polarity
Detection
The travel distance exceeded the setting
of Pn48E (Polarity Detection Range).
Gr.1
No
A.C54
Polarity Detection
Failure 2
The polarity detection failed.
Gr.1
No
A.C80
Encoder Clear Error or
Multiturn Limit Set-
ting Error
The multiturn data for the absolute
encoder was not correctly cleared or set.
Gr.1
No
A.C90
Encoder Communica-
tions Error
Communications between the encoder
and SERVOPACK is not possible.
Gr.1
No
A.C91
Encoder Communica-
tions Position Data
Acceleration Rate
Error
An error occurred in calculating the posi-
tion data of the encoder.
Gr.1
No
A.C92
Encoder Communica-
tions Timer Error
An error occurred in the communications
timer between the encoder and SERVO-
PACK.
Gr.1
No
A.CA0
Encoder Parameter
Error
The parameters in the encoder are cor-
rupted.
Gr.1
No
A.Cb0
Encoder Echoback
Error
The contents of communications with the
encoder are incorrect.
Gr.1
No
A.CC0
Multiturn Limit Dis-
agreement
Different multiturn limits have been set in
the encoder and the SERVOPACK.
Gr.1
No
A.CF1
Reception Failed Error
in Feedback Option
Module Communica-
tions
Receiving data from the Feedback Option
Module failed.
Gr.1
No
A.CF2
Timer Stopped Error
in Feedback Option
Module Communica-
tions
An error occurred in the timer for commu-
nications with the Feedback Option Mod-
ule.
Gr.1
No
A.d00
Position Deviation
Overflow
The setting of Pn520 (Excessive 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
Overflow Alarm at
Servo ON
The servo was turned ON after the posi-
tion deviation exceeded the setting of
Pn526 (Excessive Position Deviation
Alarm Level at Servo ON) while the servo
was OFF.
Gr.1
Yes
A.d02
Position Deviation
Overflow Alarm for
Speed Limit at Servo
ON
If position deviation remains in the devia-
tion counter, the setting of Pn529 or
Pn584 (Speed Limit Level at Servo ON)
limits the speed when the servo is turned
ON. This alarm occurs if a position refer-
ence is input and the setting of Pn520
(Excessive Position Deviation Alarm Level)
is exceeded before the limit is cleared.
Gr.2
Yes
Continued on next page.
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
