YASKAWA JUSP-MD D01A Series User Manual page 300

Alarm Number:
Alarm Name
(Alarm Description)
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 supply to the SERVO-
PACK and converter 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.
The order of phases U, V, and W
in the servomotor wiring is incor-
rect.
A reference value exceeding the
overspeed detection level was
input.
A.510:
Overspeed
The motor speed exceeded the
(The servomotor speed
maximum.
exceeds the maximum.)
A fault occurred in the multi-
winding drive unit, SERVO-
PACK, or converter.
The encoder output pulse fre-
quency exceeded the limit.
A.511:
The encoder output pulse output
Overspeed of Encoder
frequency exceeded the limit
Output Pulse Rate
because the motor speed was too
high.
Cause Investigative Actions
Check for foreign matter or debris
inside the converter.
Check to see if you can hear the
magnetic contactor operate when
the main circuit 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 main circuit power
supply voltage waveform when the
power supply is turned ON and
OFF.
Check the timing of inputting the
control power supply to the SER-
VOPACK and converter.
Check the wiring.
Check the connection of CN901.
Check to see if this alarm occurs
when the main circuit power supply
is turned ON.
−
Check the motor wiring.
Check the input value.
Check the motor speed waveform.
−
Check the encoder output pulse set-
ting.
Check the encoder output pulse out-
put setting and motor speed.
9.1 Alarm Displays
(cont'd)
Corrective Actions
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 supply
simultaneously to the SERVO-
PACK and converter.
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.
Confirm that the servomotor is cor-
rectly wired.
Reduce the reference value or adjust
the gain.
Reduce the speed reference input
gain, adjust the servo gain, or recon-
sider the operating conditions.
A fault may have occurred in the
multi-winding drive unit, SERVO-
PACK, or converter. Replace the
multi-winding drive unit, SERVO-
PACK, or converter.
Decrease the setting of the encoder
output pulse (Pn212).
Decrease the motor speed.
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