Service manual CS3000
Chapter 3: Relay board ARK-2 3-17
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
1. EPLD/PIO
The EPLD/PIO includes I/O-circuit to the microprocessor and a programmable
circuit for all output, input and supervising functions on the board.
2. DC/DC-converter
The DC/DC-circuit converts the battery voltage of the back plane to 5 VDC,
which is fed to circuits on the board.
3. Panel-LED
The panel-LED is flashing when the board is being polled by the LPK.
4. Panel-switch
The panel-switch is used for manually resetting the alarm devices after a basic-
alarm.
5. Alarm device output
Three programmable, fused and fault-supervised alarm device outputs.
6. Power supply output
Two fused and fault supervised outputs for power supply to external devices.
7. Relay output
Three programmable, fused and potential free relay outputs.
8. Fire/fault output
One current-sinking programmable output for FIRE and one for FAULT.
9. GA-logic
The GA-logic controls the GA-output and the alarm device outputs depending
on the GA-input and pulsed output selection.
10. DIP-switch
The DIP-switch is used for setting a continuous/intermittent function of the
outputs 5 and 7 above.
11. GA-relay output
One fused and potential free relay output, which follows the GA-input.
12. GA-input
Input for connection of GA push button.
13. GA intermittent signal output
Input for connection of external intermittent signal for the GA.
14. External fuse fault input
Input for indication of fuse fault in external devices.
15. BASIC-ALARM input
16. Opto-isolated inputs
Four opto-isolated inputs for external signals.
17. Micro processor bus
Connection of micro processor bus to the LPK.
