12.2 Alarm Displays
12.2.1 List of Alarms
12-10
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 (Posi-
tion Deviation Overflow 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 (Position Deviation
Overflow Alarm Level at
Servo ON) while the servo
was OFF.
Gr.1
Yes
L
L
H
A.d02
Position Deviation Over-
flow Alarm for Speed Limit
at Servo ON
If position deviation remains
in the deviation 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 reference
pulses are input and the set-
ting of Pn520 (Position Devi-
ation Overflow Alarm Level) is
exceeded before the limit is
cleared.
Gr.2
Yes
L
L
H
A.d10
Motor-Load Position Devi-
ation Overflow
There was too much position
deviation between the motor
and load during fully-closed
loop control.
Gr.2
Yes
L
L
H
A.d30
Position Data Overflow
The position feedback data
exceeded
±
1,879,048,192.
Gr.1
No
L
L
H
A.E71
Safety Option Module
Detection Failure
Detection of the Safety
Option Module failed.
Gr.1
No
H
L
L
A.E72
Feedback Option Module
Detection Failure
Detection of the Feedback
Option Module failed.
Gr.1
No
H
L
L
A.E74
Unsupported Safety
Option Module
An unsupported Safety
Option Module was con-
nected.
Gr.1
No
H
L
L
A.Eb1
Safety Function Signal
Input Timing Error
An error occurred in the input
timing of the safety function
signal.
Gr.1
No
H
L
L
A.EC8
Gate Drive Error 1
An error occurred in the gate
drive circuit.
Gr.1
No
H
L
L
A.EC9
Gate Drive Error 2
An error occurred in the gate
drive circuit.
Gr.1
No
H
L
L
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
