YASKAWA DX200 Maintenance Manual page 1126

Alarm Name
Alarm Sub
Number
Code
4825 BASE ENABLE
ERROR
4826 CONTACTOR ERROR
(STO)
Meaning Cause
EAXB21 board failure
YSF22 board failure
other
Sub Code: Signifies the Connection failure
control axis number which
detected an error
EAXA21 board failure
EAXB21 board failure
YSF22 board failure
other
Sub Code: Signifies the YPU unit failure
control axis number which
detected an error
Remedy
(1)Reset the alarm.
(2)If the alarm occurs again, replace the EAXB21 board. Save the
CMOS.BIN before replacing the board to be safe.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the YSF22 board. Save the
CMOS.BIN before replacing the board to be safe.
If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
(1)Reset the alarm.
(2)If the alarm occurs again, check the connection and inserting state
of the following cables and connectors.
∙
EAXA21 board CN521(Safety function's jumper connector)
∙
EAXB21 board CN522/523/524(Safety function's jumper connector)
∙
YSF22 board CN217
(1)Reset the alarm.
(2)If the alarm occurs again, replace the EAXA21 board. Save the
CMOS.BIN before replacing the board to be safe.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the EAXB21 board. Save the
CMOS.BIN before replacing the board to be safe.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the YSF22 board. Save the
CMOS.BIN before replacing the board to be safe.
If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
(1)Reset the alarm.
(2)Check if the contactors (1KM and 2KM) are open, and not damaged
by melting or sticking.
(4)If the alarm occurs again, replace the YPU unit. Save the
CMOS.BIN before replacing the unit to be safe.