YASKAWA DX100 Maintenance Manual page 176

Alarm Alarm Name Sub
Number Code
3
Meaning Cause
Connection failure
Board failure(I/O
module)
YIF board failure
The I/O module connected to the Setting error
serial bus #3 is different from the
function of the set I/O module.
Connection failure
Remedy
(1)Turn the power OFF then back ON.
(2)If the alarm occurs again, check the connection and insertion of the
following cables and connectors.
· The MII communications cable which I/O module of the corresponding node
number
· (In case of MII communications last station) Terminator
· 24V power of the corresponding I/O module
(1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the following board. Save the
CMOS.BIN before replace the board to be safe.
(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.
· The rotary switch setting which specifies slot numbers of each I/O module
· I/O module settings 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 cables and connectors.
· The MII communications cable which I/O module of the corresponding node
number
· (In case of MII communications last station) Terminator
· 24V power of the corresponding I/O module