YASKAWA Sigma-V Series User Manual page 260

Alarm Number:
Alarm Name
(Alarm Description)
The converter's main circuit
power supply was 240 V or
lower.
The power supply voltage
dropped during operation.
Occurrence of instantaneous
A.410:
power interruption.
Undervoltage
(Detected in the SER-
VOPACK main circuit
The converter fuse is blown out.
power supply section.)
The
converter are open.
A fault occurred in the SERVO-
PACK or converter.
The Converter fan stopped (The
FAN STOP indicator on the con-
verter is lit.).
An error was detected in the mag-
netic contactor inside the con-
verter. (The CHRG-ERR
indicator on the converter lights
when the power supply is turned
ON.)
Overheating was detected in the
heat sink in the converter (The
OVERHEAT indicator on the
converter is lit.).
A.42A:
Converter error
The DC output voltage from the
converter is not correct. (The
CHRG-ERR indicator on the con-
verter is lit.)
The timing of inputting the con-
trol power supplies is incorrect.
The wiring between the SERVO-
PACK and converter is incorrect
or the connection is faulty.
The connection of the I/O signals
(CN901) between the SERVO-
PACK and converter is faulty.
A fault occurred in the converter. −
The fuse in the SERVOPACK is
A.450:
blown out.
Main-Circuit
Capacitor Overvoltage
A fault occurred in the SERVO-
PACK or converter.
Cause
Measure the power supply voltage.
Measure the power supply voltage.
Measure the power supply voltage.
−
1 and 2 terminals of the Check the
the converter.
−
Check for foreign matter or debris
inside the converter.
Check to see if you can hear the
magnetic contactor operate when
the power supply is turned ON.
Check the ambient temperature,
check for an overload, and check
the installation method.
Measure the power supply voltage
and the output voltage.
Measure the power supply voltage
waveform when the power supply is
turned ON and OFF.
Check the timing of inputting the
control power supplies.
Check the wiring.
Check the connection of CN901.
Check to see if this alarm occurs
when the main circuit power supply
is turned ON.
−
Investigative Actions
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 converter, connect a
reactor, and run the SERVOPACK
and converter.
1 and 2 terminals on Correctly connect the
terminals on the converter.
The SERVOPACK or converter
may be faulty. Replace the SERVO-
PACK or converter.
Remove foreign matter or debris
from the converter. If the alarm still
occurs, the SERVOPACK or con-
verter may be faulty. Replace the
SERVOPACK or converter.
If the power supply voltage is cor-
rect but no sound is heard when the
power supply is turned ON, the con-
verter may be faulty. Replace the
converter.
Review the ambient temperature,
load conditions, and installation
conditions.
If the output voltage is not consis-
tent with the power supply voltage,
the converter may be faulty.
Replace the converter.
If the voltage waveform is not sta-
ble, take suitable measures to make
it stable.
Input the control power supplies
simultaneously.
Correctly connect the SERVO-
PACK and converter to each other.
Correctly connect CN901.
Replace the converter.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
Replace the SERVOPACK or con-
verter.
8.1 Alarm Displays
(cont'd)
Corrective Actions
1 and 2
8-11
8