Specifications

Page 71
FIREFINDER SERIES II INSTALLATION, COMMISSIONING &
OPERATION
13.2 Communications Extender Board (BRD82LTB)
The Communications Extender Board is mounted inside the FACP and provides protected RS485
communications and 27VDC to the SmartTerminal Termination Board/s and LCD/s and LED
Mimics.
CH16
CN18
RN17
RN20
LOOP COMMS
BRD82LTB2
TB1
TB4
M1
M2
CN2
CN5
CN4
COMMUNICATIONS EXTENDER BOARD
FACP MAIN
BOARD
RJ45
CABLE
TO AVAILABLE 27VDC
CONNECTOR (3 WAY)
SHIELDED COMMS CABLE
SHIELD
+24VDC
C15
C12
ZD2
ZD3
TH2
TH1
L2 L1
L6
RS485 OUT
COM
-
+
TO NEXT SmartTerminal
or LED MIMIC
0V
+24V
CN3
0V
IN
27VDC
IN OUT
OUT
CN20
Figure 95: Communications Extender Board PCB Layout
MAIN CONTROL BOARD (BRD85MBA)
FACP FRONT PANEL CONTROL (BRD85CTLA)
CN3
EXPANSION LEDS
CN21
CN20
TH1
CN8
CN1
CN6
D13
D14
CN3
BZ1
CN5
CN2
CN7
CN11
CH16
CH15
CH6 CH8
CH2
CH1
CN16
CN14
CN18
R17
TP3
RN17
RN20
CN4
CN10
CN15
CN13
CN17
c
ba
4 3 2
BRIGADE I/F
FRONT PANELEXPANSION LEDS
EXPANSION PANEL
MODEM
27V IN
PRINTER
PSU MONITOR
LOOP COMMS
1
+
CN1
CN2
1
SLAVE CPU
(302-6692)
CH8
CN1
CN2
1
CH8
CN1
CN2
1
SLAVE CPU
(302-6692)
SLAVE CPU
(302-6692)
U15
CN2
a b
c
U11
U10
U14
U13
CPU BOARD
(BRD85CPU)
CN1
25/11/2005
BRD82LTB2
TB1
TB4
M1
M2
CN2
CN5
CN4
TERMINATION BOARD No.1 ( BRD82LTB2 )
COMMUNICATIONS EXTENDER BOARD
( ITEM NUMBER 159 - 0129 )
FACP CABINET
SmartTerminal 1
SmartTerminal 2
(IF FITTED)
RJ45
CABLE
TO AVAILABLE 27VDC
CONNECTOR (3 WAY)
SHIELDED COMMS CABLE
SHIELD
TO NEXT LCDA
MAXIMUM OF 30
LK1 MUST BE FITTED TO
THE LAST BOARD ON
THE COMMS BUS
+24VDC
TERMINATION BOARD No.2 ( BRD82LTB2 )
TO
LCD
TO
LCD
CN1
0V
POWER OUT
POWER IN
+24V
RS485
IN
RS485
OUT
03/05/2006 BRD82LTB2-
TB2
TB1
TB4
TB3
LK1 NOT FITTED
COM
-
+
COM
-
+
0V
+24V
CN1
0V
POWER OUT
POWER IN
+24V
RS485 IN
RS485 OUT
03/05/2006 BRD82LTB2-
TB2
TB1
TB4
TB3
COM
-
+
COM
-
+
0V
+24V
C15
C12
ZD2
ZD3
TH2
TH1
L2 L1
L6
RS485 OUT
COM
-
+
POWER OUT
0V
+2 4V
CN3
+24V
0V
VDC
IN
VDC
OUT
0V
Figure 96: Connecting the SmartTerminal to the FACP