26
Module Settings
Main Fire Alarm Module ( MD- 871A “N” Version Main Chassis)
This main board has one addressable loop and network capability.
JW1
Jumper is removed if a PR-300 or UDACT-300A is installed.
JW2,JW4
Jumpers are Factory Set and should not be changed.
JW5
Normally un-installed, add jumper to silence on-board buzzer.
JW6
Normally installed, remove jumper to enable external power supply supervision.
P1,2
Factory connection to Bridge Rectifier.
P3
Black RS-485 Connector connects to the Adder Loop ALCN-792MISO if used (Address Loops 3 and 4)
P4
Connector for PR-300 Module or UDACT-300A.
P5
Connector for next 8 Conventional Hardwire Circuit Adder Modules (Loop 1).
P6
Connector for first 8 Conventional Hardwire Circuit Adder Modules (Loop 0).
P7
Ethernet jack.
P8
Power Connector for Adder Modules.
P9
RS-232C for Printer or “CRT” Monitor.
P10,11
Connection to 24 VDC Battery. Observe Polarity.
P14
Connector for Display Module.
P15, J1
Connectors for Factory Use.
P16
High speed RS-485 audio link to ANC-5000 Audio Network Controller Module. When connected
provides ARCnet or Fiber Optic audio and telephone communication
P19
Connector for FNC-2000 Fire Network Controller Module.
SW2
DIP Switch for node address.
NAC PWR
24V FWR
input terminals for additional power for signal adder modules.
F1
20 Amp slow blow non-replaceable fuse.
TO CONFIGURE THE FIRE ALARM PANEL USE THE RS-485 CONNECTOR P4 OF THE LAST ADDER LOOP
CONTROLLER MODULE INSTALLED OR IF NOT PRESENT, P3 ON THE FleX-Net
™
MAIN FIRE ALARM MODULE.
Figure 8: Main Fire Alarm Module ( MD- 871A “N” Version Main Chassis) SW2 DI P
Sw itch Node Address Setting on Main Fire Alarm Module
Refer to table in Appendix C: DIP Switch Settings for Node Address Setting. Available addresses are 1 to 63. DIP
Switch SW2-1 is the least significant digit.
Note:
To enable communication from the Main Module to all of the Adder Modules, it is necessary to add a Continuity
Jumper on the last Adder Module in a chain (see the appropriate Module Settings section to verify the location of
the Continuity Jumper on a particular Circuit Adder Module). Only the last circuit adder module should have a
jumper plug on its continuity jumper; all others must be left without a jumper plug.
F1
MAIN FIRE ALARM BOARD
FIELD WIRING TERMINALS
P3
P2 P1
P16
P10 P11
P15
P4
J1
P9
P7
P5
P6
P8
+ BR - +BAT -
NAC PWR
P14
P19
JW1
JW4
JW5
JW6
JW2
SW2
1
8
ON