YASKAWA DX100 Maintenance Manual page 121

Alarm Alarm Name Sub
Number Code
0020 CPU 1
COMMUNICATION
ERROR
20
Meaning Cause
No response was sent from the Software operation
YCP01 board when the control error occurred
power turned ON.
Connection failure
YCP01 board failure (1)Turn the power OFF then back ON.
YIF board failure
No response was sent from the Setting error
optional board #1 when the control
power turned ON.
Connection failure
Remedy
(1)Turn the power OFF then back ON.
(2)If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence status
(operating procedure).
(1)Turn the power OFF then back ON.
(2)If the alarm occurs again, check the connection and insertion of the
following connectors.
·
The PCI connector of YCP01 board
· The PCI connector of the YIF01 board
(2)If the alarm occurs again, replace the YCP01 board. Save the CMOS.BIN
before replace the board to be safe. Replace the YCP01 board, and then
remove
the CF from the failure YCP01 board to insert it into the new YCP01 board.
(1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the YIF01 board. Save the CMOS.BIN
before replace the board to be safe. Replace the YIF01 board, and then load
the CMOS.BIN saved before alarm occurred.
(1)Check the following settings.
· Optional board setting in maintenance mode
(1)Turn the power OFF then back ON.
(2)If the alarm occurs again, check the connection and insertion of the
following connector.
· The PCI connector of YCP02 board