Logic Diagram - ABB REL 501-C1 2.5 Technical Reference Manual

5.3
Self supervision with internal event recorder
(INT)

Logic diagram

Power supply fault
Power supply
W atchdog
I/O nodes
TX overflow
Master resp.
Supply fault
ReBoot I/O
Checksum fault
A/D conv.
module
Main CPU
Supply fault
Parameter check
I/O nodes = BIM, BOM, IOM
PSM, MIM or DCM
DSP = Digital Signal Processor
xxxx = Inverted signal
Figure 13: Hardware self-supervision, potential-free alarm contact.
Fault
module
Fault
Fault
Fault
Common functions
&
INTERNAL
FAIL
99000034.vsd
Chapter 3
41