YASKAWA SGMJV User Manual page 310

Alarm Number:
Alarm Name
• For 100-VAC SERVOPACKs:
The AC power supply voltage
exceeded 145 V.
• For 200-VAC SERVOPACKs:
The AC power supply voltage
exceeded 290 V.
• For 400-VAC SERVOPACKs:
The AC power supply voltage
exceeded 580 V.
• For 200-VAC SERVOPACKs:
with DC power supply input:
The DC power supply voltage
exceeded 410 V.
• For 400-VAC SERVOPACKs:
The DC power supply voltage
exceeded 820 V.
A.400:
Overvoltage
The power supply is unstable, or
(Detected in the SER-
was influenced by a lightning
VOPACK main circuit
surge.
power supply section.)
Voltage for AC power supply was
too high during acceleration or
deceleration.
The external regenerative resis-
tance is too high for the actual
operating conditions.
The moment of inertia ratio
exceeded the allowable value.
A SERVOPACK fault occurred.
• For 100-VAC SERVOPACKs:
The AC power supply voltage
is 49 V or less.
• For 200-VAC SERVOPACKs:
The AC power supply voltage
is 120 V or less.
• For 400-VAC SERVOPACKs:
The AC power supply voltage
A.410:
is 240 V or less.
Undervoltage
The power supply voltage
(Detected in the SER-
dropped during operation.
VOPACK main circuit
power supply section.)
Occurrence of instantaneous
power interruption.
The SERVOPACK fuse is blown
out.
A SERVOPACK fault occurred.
A.450:
Main-Circuit A SERVOPACK fault occurred.
Capacitor Overvoltage
Cause Investigative Actions
Measure the power supply voltage.
Measure the power supply voltage.
Check the power supply voltage and
the speed and torque during opera-
tion.
Check the operating conditions and
the regenerative resistance.
Confirm that the moment of inertia
ratio is within the allowable range.
−
Measure the power supply voltage.
Measure the power supply voltage.
Measure the power supply voltage.
−
−
−
9.1 Alarm Displays
(cont'd)
Corrective Actions
Set AC/DC power supply voltage
within the specified range.
Improve the power supply condi-
tions, e.g., by installing a surge
absorber. Then, turn the SERVO-
PACK power supply OFF and ON
again. If the alarm still occurs, the
SERVOPACK may be faulty.
Replace the SERVOPACK.
Set AC power supply voltage within
the specified range.
Select a regenerative resistance
value appropriate for the operating
conditions and load.
Increase the deceleration time, or
reduce the load.
Turn the SERVOPACK's control
power supply OFF and ON again
while the main circuit power supply
is OFF. If the alarm still occurs, the
SERVOPACK may be faulty.
Replace the SERVOPACK.
Set the power supply voltage within
the specified range.
Increase the power supply capacity.
When the instantaneous power cut
hold time (Pn509) is set, decrease
the setting.
Replace the SERVOPACK, con-
nect a reactor, and run the SERVO-
PACK.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
Replace the SERVOPACK.
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