Dead Front
Mounting Plate
DACT BD
OR
CITY BD
NAC BD
OR
RELAY BD
LED DISPLAY
RECTIFIER
XFORMER
BATTERY
BATTERY
(optional)
XFORMER
(optional)
T/B
NAC
Power
VB-
VB+
Exp.
Wiring
NAC
Expansion
MAIN BOARD
Main
Display
Network
Card
BAT+
Service / Printer
Port
Expansion
Module
TB5-6 Pos
Terminal Block
Vbell 3
Vbell 2
Vbell 1
BAT-
Bridge -
DISPLAY HARNESS
DISPLAY BD
NAC BD
OR
RELAY BD
TB1
TB2
TB3
TB4
+ - + - + -
SGM-2200-2 NAC EXPANDER
FX-2200 Back Box
Figure 1. SGM-2200-2 NAC Expander Installation
CON1
CON2
Connector for VB+/VB-
Plated Mounting Hole
for Lockwasher
