YASKAWA Sigma-V Series User Manual page 376

10 Troubleshooting
10.1.2 Troubleshooting of Alarms
Alarm Number:
Alarm Name
(Alarm Description)
A.d10:
Motor-load Position
Error Overflow
A.E71:
Safety Option Module
Detection Failure
A.E72:
Feedback Option
Module Detection
Failure
A.E74:
Unsupported Safety
Option Module
A.E75:
Unsupported
Feedback Option
Module
A.Eb1:
Safety Function Signal
Input Timing Error
10-20
Cause
Motor rotation direction and
external encoder installation
direction are opposite.
Mounting of the load (e.g., stage)
and external encoder joint instal-
lation are incorrect.
The connection between the
SERVOPACK and the safety
option module is faulty.
The safety option module was
disconnected.
A safety option module fault
occurred.
A fault occurred in the SERVO-
PACK.
The connection between the
SERVOPACK and the Feedback
Option Module is Faulty.
The Feedback Option Module
was disconnected.
A Feedback Option Module fault
occurred.
A fault occurred in the SERVO-
PACK.
A safety option module fault
occurred.
A unsupported safety option
module was connected.
A feedback option module fault
occurred.
A unsupported feedback option
module was connected.
The lag between activations of
the input signals /HWBB1 and
/HWBB2 for the HWBB function
is ten second or more.
Investigative Actions
Check the servomotor rotation
direction and the external encoder
installation direction.
Check the external encoder
mechanical connection.
Check the connection between the
SERVOPACK and the safety option
module.
–
–
–
Check the connection between the
SERVOPACK and the Feedback
Option Module.
−
−
−
−
Refer to the catalog of the con-
nected safety option module.
−
Refer to the catalog of the con-
nected feedback option module or
the manual of the SERVOPACK.
Measure the time lag between the /
HWBB1 and
/HWBB2 signals.
(cont'd)
Corrective Actions
Install the external encoder in the
opposite direction, or change the
setting of the external encoder
usage method (Pn002.3) to reverse
the direction.
Check the mechanical joints.
Correctly connect the safety option
module.
Execute Fn014 (Resetting configu-
ration error of option module) with
using the digital operator or Sig-
maWin+ and turn the power supply
OFF and then ON again.
Replace the safety option module.
Replace the SERVOPACK.
Correctly connect the Feedback
Option Module.
Execute resetting configuration
error in option modules (Fn014) and
turn the power supply OFF and then
ON again.
Replace the Feedback Option Mod-
ule.
Replace the SERVOPACK.
Replace the safety option module.
Connect a compatible safety option
module.
Replace the feedback option mod-
ule.
Connect a compatible feedback
option module.
The output signal circuits or devices
for /HWBB1 and
/HWBB2 or the SERVOPACK
input signal circuits may be faulty.
Alternatively, the input signal
cables may be disconnected. Check
if any of these items are faulty or
have been disconnected.