Yaskawa Sigma-5 Large Capacity Users Manual: Design and Maintenance-Rotary Motors-Mechatrolink-III Communication Reference - Manual (Page 333)

9 Troubleshooting
9.1.2 Troubleshooting of Alarms
9-22
A.E72:
Feedback Option
Module Detection
Failure
The connection between the
SERVOPACK and the Feedback
Option Module is Faulty.
Check the connection between the
SERVOPACK and the Feedback
Option Module.
Correctly connect the Feedback
Option Module.
The Feedback Option Module
was disconnected.
−
Execute resetting configuration
error in option modules (Fn014) and
turn the power supply OFF and then
ON again.
A Feedback Option Module fault
occurred.
−
Replace the Feedback Option Mod-
ule.
A fault occurred in the SERVO-
PACK.
− Replace the SERVOPACK.
A.E74:
Unsupported Safety
Option Module
A safety option module fault
occurred.
− Replace the safety option module.
A unsupported safety option
module was connected. Refer to the catalog of the con-
nected safety option module. Connect a compatible safety option
module.
A.E75:
Unsupported
Feedback Option
Module
A feedback option module fault
occurred.
−
Replace the feedback option mod-
ule.
A unsupported feedback option
module was connected.
Refer to the catalog of the con-
nected feedback option module or
the manual of the SERVOPACK.
Connect a compatible feedback
option module.
A.EA2:
DRV Alarm 2
(SERVOPACK WDT
error)
MECHATROLINK transmission
cycle fluctuated. Check the MECHATROLINK
transmission cycle setting. Remove the cause of transmission
cycle fluctuation at host controller.
A fault occurred in the SERVO-
PACK.
−
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
A.Eb1:
Safety Function Signal
Input Timing Error
The lag between activations of
the input signals /HWBB1 and
/HWBB2 for the HWBB function
is ten second or more.
Measure the time lag between the /
HWBB1 and
/HWBB2 signals.
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.
A.Ed1:
Command Execution
Timeout
A timeout error occurred when
using an MECHATROLINK
command.
Check the motor status when the
command is executed.
Execute the SV_ON or SENS_ON
command only when the motor is
not running.
For fully-closed loop control, check
the status of the external encoder
after an output is made to execute
the command.
Execute the SENS_ON command
only when an external encoder is
connected.
A.F10:
Main Circuit Cable
Open Phase
(With the main circuit
power supply ON, volt-
age was low for more
than 1 second in an R, S,
or T phase.)
(Detected when the main
power supply was turned
ON.)
The three-phase power supply
wiring is incorrect.
Check the power supply wiring.
Confirm that the power supply is
correctly wired.
The three-phase power supply is
unbalanced.
Measure the voltage at each phase
of the three-phase power supply.
Balance the power supply by chang-
ing phases.
The connection of the I/O signals
(CN901) between the SERVO-
PACK and converter is faulty.
Check the connection of CN901. Correctly connect CN901.
A fault occurred in the SERVO-
PACK or converter.
−
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK or con-
verter may be faulty. Replace the
SERVOPACK or converter.
(cont’d)
Alarm Number:
Alarm Name
(Alarm Description)
Cause Investigative Actions Corrective Actions