Service manual CS3000 Chapter 3: Loop processor board SPK-2 3-1
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
Chapter 3: The circuit boards of the central unit
Loop processor board SPK-2
The loop processor boad SPK-2 exists in three different models. Model 1 and
model 2 differs only in the exterior of the front panel, whereas Model 3 has an own
block diagram.
General
The loop processor board SPK-2 controls and supervises two detector loops with
analogue and addressable detectors. The detectors are constantly polled in order to
detect faults or changes in alarm status. Detector-initiated alarms are also
recognised and verified. The events are reported to the LPK-2 and proper hardware
signals are then activated.
Handling
Indications
Model 1 There are nine LEDs on the front panel of the board.
No 1 (green) when lit:proper voltage supply.
No 2 (yellow) when lit:fault in loop #1.
No 3 (red) when lit:fire alarm in loop #1.
No 4 (yellow) when lit:fault in loop #2.
No 5 (red) when lit:fire alarm in loop #2.
No 6 (yellow) when lit:local processor failure
No 7 (in service mode) will flash synchronously with the central unit’s
communication with the loop-PCB.
No 8, 9 (in service mode) will flash synchronously with polling of the
loop-units
Model 2 & 3 There are eight LEDs on the front panel of the board.
No 1 (green) when lit:proper voltage supply.
No 2 (yellow) when lit:local processor failure.
No 3, 4 (green) (in service mode) will flash synchronously with polling of the
loop-units
No 5 (yellow) when lit:fault in loop #1.
No 6 (red) when lit:fire alarm in loop #1.
No 7 (yellow) when lit:fault in loop #2.
No 8 (red) when lit:fire alarm in loop #2.
