User`s manual

9 Troubleshooting
9.1.1 List of Alarms for Command Option Attachable Type SERVOPACKs
9-6
A.C90
Encoder
Communications Error
Rotational
motors
Communications between the
SERVOPACK and the encoder is
not possible.
Gr.1 N/A
ON
(close)
OFF
(open)
ON
(close)
Linear
motors
Communications between the
SERVOPACK and the linear scale
is not possible.
A.C91
Encoder
Communications
Position Data Error
Rotational
motors
An encoder position data calcula-
tion error occurred.
Gr.1 N/A
Linear
motors
A linear scale position data calcu-
lation error occurred.
A.C92
Encoder
Communications Timer
Error
Rotational
motors
An error occurs in the communica-
tions timer between the encoder
and the SERVOPACK.
Gr.1 N/A
Linear
motors
An error occurs in the communica-
tions timer between the linear scale
and the SERVOPACK.
A.CA0
Encoder Parameter
Error
Rotational
motors
Encoder parameters are faulty.
Gr.1 N/A
Linear
motors
Linear scale parameters are faulty.
A.Cb0
Encoder Echoback
Error
Rotational
motors
Contents of communications with
encoder is incorrect.
Gr.1 N/A
Linear
motors
Contents of communications with
linear scale is incorrect.
A.CC0
Multi-turn Limit
Disagreement
Different multi-turn limits have been set in the
encoder and the SERVOPACK.
Gr.1 N/A
A.CF1
*
Feedback Option
Module
Communications Error
(Reception error)
Reception from the feedback option module is
faulty.
Gr.1 N/A
A.CF2
*
Feedback Option
Module
Communications Error
(Timer stop)
Timer for communications with the feedback
option module is faulty.
Gr.1 N/A
A.d00
Position Error Pulse
Overflow
Position error pulses exceeded the value set for
parameter (Pn520) (Excessive Position Error
Alarm Level).
Gr.1
Avail-
able
ON
(close)
ON
(close)
OFF
(open)
A.d01
Position Error Pulse
Overflow Alarm at
Servo ON
Position error pulses accumulated too much. Gr.1
Avail-
able
A.d02
Position Error Pulse
Overflow Alarm by
Speed Limit at Servo
ON
Rotational
motors
After a position error pulse has
been input, Pn529 limits the speed
if the servo ON command is
received. If Pn529 limits the speed
in such a state, this alarm occurs
when the position references are
input and the number of position
error pulses exceeds the value set
for parameter Pn520 (Excessive
Position Error Alarm Level).
Gr.2
Avail-
able
Linear
motors
After a position error pulse has
been input, Pn584 limits the speed
if the servo ON command is
received. If Pn584 limits the speed
in such a state, this alarm occurs
when the position references are
input and the number of position
error pulses exceeds the value set
for parameter Pn520 (Excessive
Position Error Alarm Level).
∗ Alarm occurs when an Option Module for Fully-closed Loop Control is mounted.
Alarm
Display
Alarm Name Meaning
Servomotor
Stop
Method
Alarm
Reset
Alarm Code Output
/ALO1 /ALO2 /ALO3