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Issue 6
TERMINATIONS AND CONNECTIONS Continued
Termination
Board
Function Description Compact
Terminal
39 BGM Zone 4 select ( Close to 0V to access or P5 pin 7
40 BGM Zone 3 select via 4k7 potentiometer P5 pin 6
41 BGM Zone 2 select if remote volume control P5 pin 5
42 BGM Zone 1 select Is required ) P5 pin 4
43 BGM Ground 0V P5 pin 3
44 BGM Audio line - P5 pin 2
45 BGM Audio line + P5 pin 1
46 BUSY Zone 1 busy Closes to 0V if zone 1 is in use P7 pin 1
47 BUSY Zone 2 busy Closes to 0V if zone 2 is in use P7 pin 2
48 BUSY Zone 3 busy Closes to 0V if zone 3 is in use P7 pin 3
49 BUSY Zone 4 busy Closes to 0V if zone 4 is in use P7 pin 4
50 BUSY Common busy Closes to 0V if any zone is in use P7 pin 5
51 Link to unused fire microphone select inputs P7 pin 7
52 Surv Sync Close to 0V for continuous surveillance sync. P7 pin 8
53 F/P Evac zone 1 + P8 pin 1
54 F/P Evac zone 1 – ( Sounder circuit interface with internal P8 pin 2
55 F/P Evac zone 2 + end of line Resistors. Reverse polarity P8 pin 3
56 F/P Evac zone 2 - for alarm condition. + - shown for the active P8 pin 4
57 F/P Evac zone 3 + i.e. alarm condition. ) P8 pin 5
58 F/P Evac zone 3 – P8 pin 6
59 F/P Evac zone 4 + ** See note below re EOL resistor values ** P8 pin 7
60 F/P Evac zone 4 – P8 pin 8
61 F/P Reset + P9 pin 7
62 F/P Reset - P9 pin 8
63 F/P Alert all + P9 pin 5
64 F/P Alert all - P9 pin 6
65 F/P Aux O/P Closes to 0V if either fire mic or alarm is in use P9 pin 4
66 F/P Common fault relay output n/o P9 pin 1
67 F/P Common fault relay output common P9 pin 2
68 F/P Common fault relay output n/c P9 pin 3
69 RS 485 data +
70 RS 485 data –
71 Ground 0V
72 Ground 0V
Note The total End Of Line resistor value is a combination of two resistors in series - one is
fitted on the Termination Panel and the other is fitted inside the BVCOM.
By Default, the resistor fitted inside the BVCOM is 2K2.
For values larger than 2K2, the resistor on the termination panel should be changed
(i.e. fitting a 2K7 on the panel would give approximately 5K overall).
For values smaller than 2K2 the resistor on the termination panel should be linked out
and the resistor in the BVCOM changed to the required value.
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