SCS Series Manual —
P/N 15712:L 7/18/16
45
SCS-8⁄SCE-8 Installation
The SCS⁄SCE
Back side of board
EIA-485 In (–)
EIA-485 Out (–)
EIA-485 Out (+)
EIA-485 In (+)
Not Used
Not Used
Common In (–)
Common Out (–)
Power In (+24 VDC)
Power Out (+24 VDC)
Earth Ground
Figure 3.13 SCS-8 Terminals
EIA-485 (–)
EIA-485 (+)
First SCS-8 or Annunciator _ _ _ _Last SCS-8
Dipswitch 8 ON
TB2
FACP/Network
Annunciator
EIA-485 (–)
EIA-485 (+)
FACP/Network
Annunciator
TB2
TB2
TB2
First SCS-8 or Annunciator _ _ __Last Annunciator
ELR installed
Terminate with
120 ohms if required.
–
–
+
+
–
–
+
+
–
–
+
+
–
–
+
+
ELR
Part #
71244
Figure 3.14 Wiring Two or More Smoke Control Stations (SCS-8)/Annunciators
Fire Alarm Control Panel
24 VDC Power
(12 to 18 AWG )
Two-wire EIA-485 Circuit
(Maximum of 6,000 feet)
SCS-8
Note: The
AM2020/AFP1010
control panels can
support two EIA-485
circuits, each capable
of spanning 6,000
feet @ 16 AWG
(refer to
The
AM2020/AFP1010
Installation Manual
).
Figure 3.15 EIA-485 and Power Wiring