Service manual CS3000
Chapter 3: Loop processor board SPK-2 3-5
The circuit boards of the central unit
Document no.:
S-4-007.875/E
Prepared:
1995-03-17 Fia
Revision:
R4 2004-03-15 BM
© 2002, Consilium Marine AB
Block diagram
Model 3
SPK-2 Model 3 can be split into three functions: Power supply, loop and processor
with memory. The power supply provides the board with loop power and power for
the logic and the processors. The loop part contains electronics for two loops and
handles power supply for the loop and sending/transmitting of IDA and NOSE
messages. The processor controls the loops and communicates with the LPK via the
RS485 channel of the back plane.
The whole board is galvanically isolated from the CS3000 rack.
