ABB REC650 - Page 551

IEC09000390-1-en.vsd
Power supply fault
Watchdog
TX overflow
Master resp.
Supply fault
ReBoot I/O
Internal Fail (CPU)
Power supply
module
I/O nodes
CEM
AND
Fault
Fault
Fault
INTERNAL
FAIL
I/O nodes = BIO
xxxx = Inverted signal
IEC09000390 V1 EN
Figure 263: Hardware self-supervision, potential-free contact
1MRK 511 287-UEN A Section 15
Basic IED functions
545
Technical manual