YASKAWA SGM7D-30F Product Manual page 301

3.5 FT83 SERVOPACKs with Analog Voltage/Pulse Train References
3.5.3 Troubleshooting Alarms
Alarm Number:
Alarm Name
A.Eb1:
Safety Function
Signal Input Tim-
ing Error
A.EC8:
Gate Drive Error 1
(An error
occurred in the
gate drive circuit.) A failure occurred in
A.EC9:
Gate Drive Error 2
(An error
occurred in the
gate drive circuit.)
A.EF9:
INDEXER Alarm
A.F10:
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.)
A.F50:
Servomotor Main
Circuit Cable Dis-
connection
(The Servomotor
did not operate or
power was not
supplied to the
Servomotor even
though the /S-ON
signal was input
when the Servo-
motor was ready
to receive it.)
3-232
Possible Cause
The delay between
activation of the
/HWBB1 and Measure the time delay
/HWBB2 input sig- between the /HWBB1
nals for the HWBB and /HWBB2 signals.
was ten second or
longer.
A failure occurred in
–
the SERVOPACK.
–
the SERVOPACK.
Use the SigmaWin+ to
An alarm occurred in
identify the INDEXER
the INDEXER.
alarm.
The three-phase
Check the power sup-
power supply wiring is
ply wiring.
not correct.
Measure the voltage for
The three-phase
each phase of the
power supply is
three-phase power sup-
unbalanced.
ply.
A single-phase power
supply was input with-
Check the power sup-
out specifying a sig-
ply and the parameter
nal-phase AC power
setting.
supply input (Pn00B =
n.1).
A failure occurred in
–
the SERVOPACK.
A failure occurred in
–
the SERVOPACK.
The wiring is not cor-
rect or there is a faulty
Check the wiring.
contact in the motor
wiring.
Confirmation
The output signal circuits
or devices for /HWBB1
and /HWBB2 or the SER-
VOPACK input signal cir-
cuits may be faulty.
Alternatively, the input sig-
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.
Use the correction for the
INDEXER alarm.
Make sure that the power
supply is correctly wired.
Balance the power sup-
ply by changing phases.
Match the parameter set-
ting to the power supply.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
Make sure that the Servo-
motor is correctly wired.
Continued from previous page.
Correction Reference
–
–
–
*1
*1
–
*1
–
–
*1
Continued on next page.