Specifications

Page 25
FIREFINDER SERIES II INSTALLATION, COMMISSIONING &
OPERATION
5.4 16/16 Input / Output Board
The Input / Output Board is connected to the slave CPU via CN1 and acts as the interface between
the Slave CPU, 8 Way Relay Board and the 16 Way Opto Input Board.
Dependant on the panel configuration a maximum of 8 Input / Output boards can be daisy chained
together.
TO 8 WAY RELAY BOARDS
TO 16 WAY OPTO
INPUT BOARD
TO CONTROL IN OF
NEXT
INPUT / OUTPUT BOARD
OR
FAN CONTROL BOARD
MAXIMUM OF 8
BOARDS PER
SLAVE CPU
+27V
IN
OUT
CN2
CONTROL OUT
302-6720 1/98
POWER
CTRL
CN3 I/P 1-16
CN4 O/P 9-16
IN
CN5 O/P 1-8
CTRL
OUT
U2
U7
CN7
CN6
0V +V
CN2
+5V
CN1
U8
U1
U4
U3
U5
U6
+
-
+
-
1 2
U9
TO CN1 OF THE
SLAVE CPU
Figure 23: 16 / 16 Input / Output Board
5.5 8 Way Relay Board
Relay Outputs: Each 8 Way Relay Board is fitted with either eight 1A, RL1 to 8, or 5A, RL9 to 16,
relays with voltage free contacts which can be used for control (e.g. releasing doors) or monitoring
(e.g. driving indicators, door open / closed) purposes.
CN1
TB2
TB1
RL9
N/O
C
N/C
RL10
N/O
C
N/C
RL16
N/O
C
N/C
RL15
N/O
C
N/C
RL14
N/O
C
N/C
RL13
N/O
C
N/C
RL12
N/O
C
N/C
RL11
N/O
C
N/C
O/P 1
N/CCN/0
302-676x
O/P 2
N/0 C N/C
O/P 3
N/0 C N/C
O/P 4
N/0 C N/C
O/P 5
N/0 C N/C
O/P 6
N/0 C N/C
O/P 7
N/0 C N/C
O/P 8
N/0 C N/C
TO CN4
OR CN5
OR THE
16/16 I/O
BOARD
RL1
RL2
RL3 RL4 RL5 RL6
RL7 RL8
5 Amp Version
Legend
1 Amp Version
RL9
N/O
C
N/C
RL1
Figure 24: 8 Way Relay Board with 1A Relays Fitted