YASKAWA Sigma-7-Series Product Manual page 111

Alarm Number:
Possible Cause
Alarm Name
A failure occurred in
the Safety Option
A.E74:
Module.
Unsupported
Safety Option
An unsupported
Module
Safety Option Module
was connected.
The delay between
activation of the
/HWBB1 and
A.Eb1:
/HWBB2 input sig-
Safety Function
nals for the HWBB
Signal Input Tim-
was ten second or
ing Error
longer.
A failure occurred in
the SERVOPACK.
A.EC8:
Gate Drive Error 1
(An error
occurred in the
gate drive circuit.) A failure occurred in
the SERVOPACK.
A.EC9:
Gate Drive Error 2
(An error
occurred in the
gate drive circuit.)
A timeout error
A.Ed1:
occurred for a
Command Exe-
MECHATROLINK
cution Timeout
command.
The three-phase
power supply wiring is
not correct.
The three-phase
power supply is
A.F10:
unbalanced.
Power Supply
Line Open Phase
A single-phase power
(The voltage was
supply was input with-
low for more than
out specifying a sin-
one second for
gle-phase AC power
phase R, S, or T
supply input (Pn00B =
when the main
n.1).
power supply
was ON.)
A failure occurred in
the SERVOPACK.
Confirmation
Replace the Safety Option
–
Module.
Refer to the catalog of
Connect a compatible
the connected Safety
Safety Option Module.
Option Module.
The output signal circuits
or devices for /HWBB1
and /HWBB2 or the SER-
VOPACK input signal cir-
Measure the time delay cuits may be faulty.
between the /HWBB1 Alternatively, the input sig-
and /HWBB2 signals. nal cables may be discon-
nected. Check to see if
any of these items are
faulty or have been dis-
connected.
Replace the SERVO-
–
PACK.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
–
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
Execute the SV_ON or
Check the motor status
SENS_ON command only
when the command is
when the motor is not
executed.
operating.
For fully-closed loop
Execute the SENS_ON
control, check the sta-
command only when an
tus of the external
external encoder is con-
encoder when the com-
nected.
mand is executed.
Check the power sup- Make sure that the power
ply wiring. supply is correctly wired.
Measure the voltage for
each phase of the Balance the power sup-
three-phase power sup- ply by changing phases.
ply.
Check the power sup-
Match the parameter set-
ply and the parameter
ting to the power supply.
setting.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
–
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
5.3 Troubleshooting Alarms
Continued from previous page.
Correction Reference
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