Page 43
FIREFINDER SERIES II
INSTALLATION,
COMMISSIONING
&
OPERATION
11.5 16 Way Input Board (302-677)
Opto-Inputs:
Up to 16 inputs can be connected to the 16 Way Input Board. These inputs are
required to be voltage free contacts as shown below.
1 2
COMCOM
3 4 5 6 7
8 9 10 1112 13 14 15 16
CN1
TB2
TB3
TB4
TB5
TB6
U4
U1
U2
U5
U7
U8
U9
U10
U11
U12
U13
U14
U15
U16
U6
U3
TB1
3
0
2
-6
7
70
AS AN EXAMPLE
INPUTS 1 AND 16 CONNECTED TO
VOLTAGE-FREE CONTACTS
TO CN3 OF
302-6720
Figure 56: 16 Way Input Board
11.6 Serial Relay Board (302-732)
Relay Outputs:
Each Serial Relay Board communicates with the Main Controller via the Serial Bus
and is fitted with eight 1A relays fitted with voltage free contacts. A maximum of 8 boards can be
daisy chained together per Controller.
+27VDC
C3
CN4
R3
C1
R2
R1
U4
C4
C2
U1
U2
CN3
CN1
RL1
MOV1
MOV3
M
OV
1
7
TB2
TB1
D3
RL8
RL7
RL6
RL5
RL4
RL3
RL2
MOV2
D1
D2
D4
D5
D6
D7
MOV4
MOV5
MOV6
MOV7
MOV8
MOV9
MOV10
MOV11
MOV12
MOV13
MOV14
MOV15
MOV16
D8
CN2
U3
N
12
36
POWER
N/0
C
N/C
O/P 1
N/0
C
O/P 2
N/C
N/0
C
O/P 3
N/C
N/0
C
O/P 4
N/C
N/0
C
O/P 5
N/C
N/0
C
O/P 6
N/C
N/0
C
O/P 7
N/C
N/0
C
O/P 8
N/C
302-732 JAN 02
I N
O U T
C
NC
NO
///
C
NC
NO
///
C
NC
NO
///
C
NC
NO
///
C
NC
NO
///
C
NC
NO
///
C
NC
NO
///
C
NC
NO
///
To CN3 of
Main Controller,
other Serial Boards,
LED Mimic or
Valve Display
Boards
To CN1 ( IN ) of
next Serial Board
+-
Figure 57: Serial Relay Board