YASKAWA FS100 - Page 96

9Alarm
DX100 9.4 Alarm Message List
9-9
Alarm
Number
Alarm Name
Sub
Code
Meaning Cause Remedy
20 CPU COMMUNICATION
ERROR
1 No response was sent from the
Main CPU board when the control
power turned ON.
Software operation error
occurred
(1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the controller. Save the CMOS.BIN before
replacement to be safe.
Main CPU board failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the controller. Save the CMOS.BIN before
replacement to be safe.
50 No response was sent from the
servo board #1 when the control
power turned ON.
In this case, the FS100 may make
wrong judgement that a signal
such as external hold signal is
input. However, it is caused by the
communication error with Servo
control board #1. Therefore,
execute the following measure.
Setting error (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the controller. Save the CMOS.BIN before
replacement to be safe.
Connection failure (1)Turn the power OFF then back ON
(2)If the alarm occurs again, replace the controller. Save the CMOS.BIN before
replacement to be safe.
Servo control board failure (1) Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the controller. Save the CMOS.BIN before
replacement to be safe.
Main CPU board failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the controller. Save the CMOS.BIN before
replacement to be safe.
51 No response was sent from the
Servo control board #2 when the
control power turned ON.
Setting error (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the controller. Save the CMOS.BIN before
replacement to be safe.
Connection failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the controller. Save the CMOS.BIN before
replacement to be safe.
Servo control board failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the controller. Save the CMOS.BIN before
replacement to be safe.