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Service manual CS3000
Chapter 3: Input board INK-2 3-19
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
Input board INK-2
General
The input board INK-2 is used for getting information about external activities,
which can be used, for example, to control other outputs. The INK-2 board is
controlled by the alarm processor board LPK-2, via the address and data buses
in the back plane. The board also contains a status register for functional
checks.
The INK-2 board is equipped with 24 opto-isolated inputs for 24 VDC/10 mA.
These inputs are divided into six groups, each with four inputs with a common
return conductor.
Handling
Indications
There are two LEDs on the front panel of the board.
No 1 (green) when lit: proper voltage supply.
No 2 (green) when lit: the board is properly polled.
Fuse
The battery voltage is fused. If the fuse is blown a signal is activated in the
back plane. The fuse is accessible on the front panel of the board, and can be
used for disconnecting the power.
Fuse rating: 250 mAT 5x20 mm
Setting the address
The address of the board is set with a DIP-switch (SW1), with 8 switches. The
address bits #2 - #9 are set. Bit #2 is set with SW1-1, and bit #9 with SW1-8.
For more information see Appendix A.
Restarting the board
Remove the fuse from the board to disconnect the power. When the fuse is put
back on, the board is restarted.
Replacing the board
To replace INK-2 follow these steps:
1.
Shut down the central by removing the fuses F3-F6 on the KE-2 rectifier.
WARNING!
The power must be disconnected before the board is removed.
2.
Remove the board and replace it with the new board.
3.
Start up the central by inserting F3+F4 and F5+F6 in that order.
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Salwico INK-2