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LT-870 Rev 4
August 2012 Page
1 of 2
SGM-1004A
4 Signal Adder Module
Installation Instructions
Module Mounting Locations
The SGM-1004A may be mounted in the same locations as other adder modules. Refer to Figure 1 below for mounting
locations.
Figure 1: Module Mounting Locations View #1
Terminal and Jumper Locations
Figure 2: Signal Adder Module (SGM-1004A)
Note: Only the last circuit adder module should have a jumper plug on its continuity jumper; all others must be left
without a jumper plug.
Notes:
1. Front plate is not shown.
2. Position reserved for PR-300 or UDACT-300A.
3. Other circuit adder modules may be: FNC-2000 Network Controller Module, DM-1008A Detection Circuit Adder
Module, SGM-1004A Signal Circuit Adder Module, RM-1008A Relay Circuit Adder Module, ALCN-792M
Loop Adder Module
MAIN CHASSIS EXAMPLE
(SEE NOTE 1)
SGM-1004A AND
OTHER CIRCUIT
ADDER MODULES
(SEE NOTE 3)
#6-32 X 1 1/2”
M/F HEX SPACER
SGM-1004A AND
OTHER CIRCUIT
ADDER MODULES
(SEE NOTE 3)
PR-300 CITY TIE MODULE
(SEE NOTE 2)
#6-32 X 1 1/4”
SCREW
UDACT-300A
DIALER MODULE
(SEE NOTE 2)
P1
P3
P4P2
JW1
JW5
JW4
JW3
JW2
J11
1 2 3
ZONE 4
ZONE 3
ZONE 2
ZONE 1
Data Cable to P6 of the
main fire alarm module
or to previous adder
module
Power connector to
P8 main fire alarm
module or to previous
adder module
P1 Data Cable to next
adder module
P3 Power Cable to
next adder module
FIELD WIRING TERMINALS
GREEN SIGNAL LEDs
LT-870 Rev 4
August 2012 Page 2 of 2
Jumpers on the SGM-1004A Signal Adder Module and their functions:
JW1: Remove continuity jumper if this is not the last adder module installed.
JW2, JW3, JW4, JW5 and JW11: Leave these jumpers open.
Components
There are four green LEDs on the board, one for each signal zone. The LED will illuminate or flash following the signal rate
sent to its zone. It will be off when the system is normal and they will illuminate when a signal zone is activated. The LED
does not reflect what is happening on the signal zone, just that it is receiving data to activate that signal zone.
Operation
There are three modes of operation for this module. The basic mode of operation does not involve any bell cut relay or
isolators connected to the signal zones. For this case, leave jumpers JW2, JW3, JW4 and JW5 as they come on pins 2 and
3, and do not make any connection to terminal block J11. The second mode provides bell cut operation which allows the
silencing of the bells. The third mode is used when isolators are to be connected to the signal circuits. For further information
on bell cut relays or isolators, please refer to the specific fire alarm panel manual or the isolator instruction manual.
Jumpers for the Bell Cut Mode
JW2: Place jumper over pins 1 and 2 for the ability to remotely silence the bells on Zone 1.
JW3: Place jumper over pins 1 and 2 for the ability to remotely silence the bells on Zone 2.
JW4: Place jumper over pins 1 and 2 for the ability to remotely silence the bells on Zone 3.
JW5: Place jumper over pins 1 and 2 for the ability to remotely silence the bells on Zone 4.
J11: Wire these terminals to a bell cut relay (for details see QRM-1001 Bell Cut Module Installation and Operating
Instructions, LT-666).
Jumpers for the Isolator Mode
JW2: Place jumper over pins 2 and 3 for the ability to connect an isolator on Zone 1.
JW3: Place jumper over pins 2 and 3 for the ability to connect an isolator on Zone 2.
JW4: Place jumper over pins 2 and 3 for the ability to connect an isolator on Zone 3.
JW5: Place jumper over pins 2 and 3 for the ability to connect an isolator on Zone 4.
J11: Wire these terminals to an alarm relay. These may be tapped if more signal modules are used in this manner.
Note: Jumpers JW2, JW3, JW4 and JW5 are positioned on pins 2 and 3 (right two pins with board
orientation as shown above) from factory.
ATTENTION: Discard jumpers on zones that are not configured for bell cut.
ATTENTION: Discard jumpers on zones that are not configured for isolators or bell cut.
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