YASKAWA SGD7S-1R9D Product Manual page 498

15.2 Alarm Displays
15.2.2 Troubleshooting Alarms
Alarm Code:
Alarm Name
410 hex:
Undervoltage
(Detected in the
main circuit
power supply
section of the
SERVOPACK.)
450 hex:
Main-Circuit
Capacitor Over-
voltage (The
capacitor in the
main circuit has
deteriorated or is
faulty.)
510 hex:
Overspeed
(The motor
exceeded the
maximum speed.)
511 hex:
Encoder Output
Pulse Overspeed
15-18
Possible Cause
The power supply
Measure the power
voltage went below
supply voltage.
the specified range.
The power supply
Measure the power
voltage dropped
supply voltage.
during operation.
A momentary power Measure the power
interruption occurred. supply voltage.
The SERVOPACK
–
fuse is blown out.
A failure occurred in
–
the SERVOPACK.
A failure occurred in
–
the SERVOPACK.
The order of phases
U, V, and W in the Check the wiring of the
motor wiring is not Servomotor.
correct.
A reference value that
exceeded the over- Check the input refer-
speed detection level ence.
was input.
The motor exceeded Check the waveform of
the maximum speed. the motor speed.
A failure occurred in
–
the SERVOPACK.
The encoder output
Check the encoder out-
pulse frequency
put pulse setting.
exceeded the limit.
The encoder output
pulse frequency Check the encoder out-
exceeded the limit put pulse setting and
because the motor the motor speed.
speed was too high.
Confirmation
Set the power supply volt-
age within the specified
range.
Increase the power supply
capacity.
If you have changed the
setting of Pn509 (2509
hex) (Momentary Power
Interruption Hold Time),
decrease the setting.
Replace the SERVO-
PACK and connect a
reactor to the DC Reac-
tor terminals ( 1 and
on the SERVOPACK.
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
Replace the SERVO-
PACK.
Make sure that the Servo-
motor is correctly wired.
Reduce the reference
value. Or, adjust the gain.
Reduce the speed refer-
ence input gain and
adjust the servo gain. Or,
reconsider the operating
conditions.
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
Decrease the setting of
Pn212 (2212 hex)
(Encoder Output Pulses)
or Pn281 (2281 hex)
(Encoder Output Resolu-
tion).
Reduce the motor speed.
Continued from previous page.
Correction Reference
–
–
page 6-14
–
2)
–
–
–
−
–
page 6-23
–
Continued on next page.