
FARADAY, LLC
446994 ISSUE I REV. A
PAGE 1 OF 1
Main
Termination
Board
Loop/Signal
Expansion
Board
Screws (6)
INSTALLATION INSTRUCTIONS AND WIRING FOR
LOOP/SIGNAL EXPANSION BOARD
CAT. NO. LSE-1 P/N 12505
The 12505 Loop/Signal Expansion Board is an optional module for the 12500, 12530 or 12540 Fire Alarm
System Control Unit. The Loop/Signal Expansion Board provi des 4 Class B (Style Y) NACs. A 12504
Class A Adapter may be added to convert to 4 Class A (Style Z) NACs. A 12502A Loop Driver Board may
be added to provide 2 analog/addressable loops. One 12505 Loop/Signal Expansion Board may be
mounted in the enclosure above the Main Termination Board. If more than one expansion board is used, the
extended enclosure is required.
PARTS SUPPLIED
1
12505
Loop/Signal Expansion Board
6
29529-11
Screws, 6x32 ¼”
1
446651
Cable Assembly, 34 pin 12”
4
942676
Resistors, 4.7K Ohm 1/2W
1
446994
Instruction Sheet
12505 WIRING
Step 1.) Installation is to be done by qualified personnel
who have thoroughly read and understood this
instruction sheet.
Step 2.) Disconnect all power into system, including
batteries.
Step 3.) Mount Loop/Signal Expansion Board with six
screws (P/N 29529-11) as shown.
NOTE:
The Loop/Signal Expansion Board must
be the top expansion board.
NOTE:
The Loop/Signal Expansion Board
connector P5 must be aligned with the circuit
board connector below.
Step 4.) Connect cable assembly(s) (P/N 446651) from
the Main Logic Board connector P1 or the
previous expansion board connector to the
Loop/Signal Expansion Board connector P2.
Step 5.) Attach conduit and run wires as required.
Step 6.) Connect wires to the fire alarm system control
unit as required.
Step 7.) Apply power to system.
Step 8.) Check for proper operation of functions.
12505 MOUNTING
NOTES:
1.)
Units to be installed in accordance with all local
electrical codes.
2.)
Terminal block will accept a maximum of #12
AWG wiring.
3.)
See Owners Manual for compatible devices.
TB
WJ4
TB4
WJ3
P
1
P
P50
LOOP3
P51
LOOP
TB1
WJ1
TB2
WJ2
STY
STY
LOOP
BOAR
INSTALL
4 -
4 +
4 -
I
O
A- A+ B- B+ +
-
NAC
NAC
C+
C-
D+
D-
+
-
3 +
3 -
3 +
3 -
I
O
4 +
Set Jumper P51
for Loop #4
Style 4 or 6/7
Set Jumper P50
f or Loop #3
Style 4 or 6/7
Set Jumper
P1 for Loop
Driver Board
Installed
Typical Wiring
Notification Appliance Circuit
Style Y, Class B
Supervised & Power Limited
See Owners Manual P/N 446987
for Compatible Devices and wiring
information
Typical Optional External
24VDC Nominal Input,
3 Amp max.
Use 12408 Auxiliary
Power Supply.
For NACs A & B, Cut
Jumpers WJ1 & 2.
For NACs C & D, Cut
Jumpers WJ3 & 4.
(Must be in the same
room and wired in
conduit.)
NAC Ratings:
Alarm Voltage: 24VDC nominal
Ma Standby Current: 3.4 mA
Max Alarm Current: 1.5A
Max Ripple: 1.5VAC
Max Wire Loop Voltage Drop: 1.0VDC
Typical Wiring
Addressable
Device Circuit
Style 4, 6 or 7
Supervised
Power Limited
See Owners Manual
P/N 446987 for
Compatible Devices and
wiring information.
Addressable
Device Circuit #4
NAC A
Addressable
Device Circuit #3
NAC C
NAC B
Optional
Power
Input for
NACs C
& D
Optiona
l Power
Input for
NACs A
& B
NAC D
Faraday
P/N 10812
4.7K 1/2W
Содержание MPC-1500 Plus
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