YASKAWA FS100 Maintenance Manual page 233

Alarm Alarm Name Sub
Number Code
4308 VOLTAGE DROP
(CONVERTER)
4309 DEFECTIVE ENCODER
INTERNAL DATA
4310 ENCODER OVERHEAT
Meaning Cause
Connection failure
Module failure
Sub Code: Signifies the physical Voltage failure
No. of converter in which the
alarm occurred
Connection failure
Module failure (converter)
Servo control board failure
Sub Code: Signifies the axis in Connection failure
which the alarm occurred
Module failure (encoder)
Sub Code: Signifies the axis in Overheated encoder
which the alarm occurred
High ambient temperature
Module failure (encoder)
Remedy
(1)Reset the alarm
(2)If the alarm occurs again, check the connection and inserting state of the
following cables and connectors.
{Robot axis}
·Cable between encoders
{External axis}
·Cable between encoders
(3)If the alarm occurs again, replace controller
(motor) (1)Reset the alarm
(2)If the alarm occurs again, replace the motor.
Check if the primary power supply voltage is dropping.
(1)Reset the alarm
(2)If the alarm occurs again, replace controller. Save the CMOS.BIN before
replace controller to be safe.
(1)Reset the alarm
(2)If the alarm occurs again, replace controller. Save the CMOS.BIN before
replace controller to be safe.
(1)Reset the alarm
(2)If the alarm occurs again, replace controller. Save the CMOS.BIN before
replace controller to be safe.
(1)Reset the alarm
(2)If the alarm occurs again, check the connection and inserting state of the
following cables and connectors.
{Robot axis}
·Cable between encoders
{External axis}
·Cable between encoders
(3)If the alarm occurs again, replace controller
(1)Reset the alarm
(2)If the alarm occurs again, replace the encoder.
Turn OFF the power supply for about 10 minutes.
Adjust the ambient temperature to 40°C or less.
(1)Reset the alarm
(2)If the alarm occurs again, replace the encoder.
233 of 348