YASKAWA Sigma-7 SGD7S Series - Page 628

Alarm Code Alarm Name Possible Cause Confirmation Correction Reference
A.Eb1
(1Eb1h)
Safety Function
Signal Input
Timing Error
The delay between
activation of the /
HWBB1 and /HWBB2
input signals for the
HWBB was ten
second or longer.
Measure the time
delay between the /
HWBB1 and /
HWBB2 signals.
The output signal cir-
cuits or devices for /
HWBB1 and /
HWBB2 or the SER-
VOPACK input signal
circuits may be
faulty. Alternatively,
the input signal
cables may be dis-
connected. Check to
see if any of these
items are faulty or
have been discon-
nected.
–
A failure occurred in
the SERVOPACK.
– Replace the SERVO-
PACK.
–
A.EC8
(1EC8h)
Gate Drive Error
1 (An error
occurred in the
gate drive cir-
cuit.)
A failure occurred in
the SERVOPACK.
– Turn the power
supply to the SER-
VOPACK OFF and
ON again. If an
alarm still occurs, the
SERVOPACK may
be faulty. Replace
the SERVOPACK.
–
A.EC9
(1EC9h)
Gate Drive Error
2 (An error
occurred in the
gate drive cir-
cuit.)
A.Ed1
(1Ed1h)
Command Exe-
cution Timeout
A timeout error
occurred for a
PROFINET command.
Check the motor
status when the
command is exe-
cuted.
Execute the Servo
ON command
(Enable Operation
command) only
when the motor is
not operating.
–
A.F10
(1F10h)
Power Supply
Line Open
Phase (The
voltage was low
for more than
one second for
phase R, S, or T
when the main
power supply
was ON.)
The three-phase
power supply wiring is
not correct.
Check the power
supply wiring.
Make sure that the
power supply is cor-
rectly wired.
Ä Chap. 5.4
‘Wiring the
Power Supply to
the SERVO-
PACK’ page 92
The three-phase
power supply is unbal-
anced.
Measure the voltage
for each phase of the
three-phase power
supply.
Balance the power
supply by changing
phases.
–
A single-phase power
supply was input
without specifying a
single- phase AC
power supply input
(Pn00B = n.1).
Check the power
supply and the
parameter setting.
Match the parameter
setting to the power
supply.
Ä Chap. 5.4
‘Wiring the
Power Supply to
the SERVO-
PACK’ page 92
A failure occurred in
the SERVOPACK.
– Turn the power
supply to the SER-
VOPACK OFF and
ON again. If the
alarm still occurs, the
SERVOPACK may
be faulty. Replace
the SERVOPACK.
–
Sigma-7 Series SERVOPACKs
Maintenance
Alarm Displays > Troubleshooting Alarms
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