Motoman PX2750, Manual

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10.3 Alarm Message List
10-38
4308 VOLTAGE DROP
(CONVERTER)
[Bit Pattern] • Direct current power supply voltage sup-
plied to amplifier for servopack has
become less than143V.
Reason is follows:
• Primary power supply voltage was too low.
• There was open phase.
• Defective converte
• Defective WRCA01circuit boar
• Check the connection for primary side
wiring R,S,T, wire.
• Check that power supply voltage is more
than 170V.
• If the error occurs again, replace the
WRCA01, WRCF01 circuit board, the
converter.
4309 DEFECTIVE
ENCODER INTER-
NAL DATA
Robot/Station
[Axis Data] The internal parameter error for serial
encoder. It is thought the encoder was
abnormal. • Turn the power off then back on. If a
phenomenon occurs again after repeat-
ing this operation several times, replace
the motor (encoder) for axis occurred the
error.
• If the error occurs again, consult with a
YASKAWA representative.
4310 ENCODER OVER-
HEAT
Robot/Station
[Axis Data] The encoder has overheated to 100
degrees. • Check that the ambient temperature is
not too high.
• Check the load again.
• Check the primary power supply voltage
(220V+10%).
• If the error occurs again, replace the
WRCA01 circuit board, the encoder.
4311 ENCODER BACK-UP
ERROR
Robot/Station
[Axis Data] • Because backup power supply voltage for
encoder decreased (less than 2.6V), posi-
tion data of the encoder disappeared.
• Whenever a new motor was used, this
error occurred.
• Reset the alarm. Adjust the home posi-
tion again.
• Check the battery voltage for encoder.
(more than 2.8V)
• Replace the battery.
• If the error occurs again, replace the
encoder.
• Because it is charged the backup con-
denser, don't turn off power supply for a
few minutes.
4312 ENCODER BAT-
TERY ERROR
Robot/Station
[Axis Data] Voltage of backup battery for encoder has
decreased.(less than 2.8V)
(In case leaving this voltage as it is, the
backup error occurs and position data dis
appears.) • Check the battery voltage for encoder.
(more than 2.8V)
• Replace the battery.
4313 SERIAL ENCODER
OVER HEAT
Robot/Station
[Axis Data] The encoder has overheated to 100
degrees. • Check that the ambient temperature is
not too high.
• Check the load again.
• Check the primary power supply voltage
(220V+10%).
• If the error occurs again, replace the
WRCA01 circuit board, the encoder.
4314 SERIAL ENCODER
BATTERY ERROR
Robot/Station
[Axis Data] Voltage of backup battery for encoder has
decreased.(less than 2.8V)(In case leaving
this voltage as it is, the backup error occurs
and position data disappears. • Check the battery voltage for encoder.
(more than 2.8V)
• Replace the battery.
Alarm Message List
Alarm
Number
Message Cause Remedy