YASKAWA DX100 Maintenance Manual page 322

Alarm Alarm Name Sub
Number Code
1555 ENCODER BACK-
UP
ERROR(SERVO2)
1556 DEFECTIVE
ENCODER IN-
DATA(SV2)
Meaning Cause
Setting error
Module
failure(motor)
Module
failure(SERVOPACK
)
Voltage failure
Connection failure
Module
failure(encoder)
Module
failure(SERVOPACK
)
Module
failure(encoder)
Module
failure(SERVOPACK
)
Remedy
Check the settings for manipulator motion condition (influence by external
force, load condition).
(1)Reset the alarm.(In case of major alarm, turn the power OFF then back
ON.)
(2)If the alarm occurs again, replace the motor.
(1)Reset the alarm.(In case of major alarm, turn the power OFF then back
ON.)
(2)If the alarm occurs again, replace the SERVOPACK.
Check the voltage of the encoder backup battery.
Check the insertion and connection of the followings.
· Encoder backup battery
· Between encoders
(1)Reset the alarm.(In case of major alarm, turn the power OFF then back
ON.)
(2)If the alarm occurs again, replace the encoder.
(1)Reset the alarm.(In case of major alarm, turn the power OFF then back
ON.)
(2)If the alarm occurs again, replace the SERVOPACK.
(1)Reset the alarm.(In case of major alarm, turn the power OFF then back
ON.)
(2)If the alarm occurs again, replace the encoder.
(1)Reset the alarm.(In case of major alarm, turn the power OFF then back
ON.)
(2)If the alarm occurs again, replace the SERVOPACK.