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The M302 Monitor Module
2.11 The M302 Monitor Module
The M302 Monitor Module is an addressable module that interfaces and monitors UL compatible conventional 2-
wire smoke detectors. Refer to the Fire•Lite Device Compatibility Document. The supervised circuit may be wired
as NFPA Style B or Style D.
Communications SLC Loop Connections
Connect the MS-9200 Communications SLC loop to M302 Terminals 1(-) and 2(+). The M302 occupies one module
address on the loop. Use rotary switches on the M302 to set the module to the required loop address.
NFPA Style B Initiating Device Circuit
Connect 2-wire smoke detectors to M302 Terminals 6(B-) and 7(B+) as illustrated in Figure 2-21, "Style B Circuit
using M302," on page 39. IDC installation wiring must not exceed 25 ohms, 12-18 AWG (0.75 - 3.25 mm
Use a 3.9K ohm ELR across the last initiating device.
NFPA Style D Initiating Device Circuit
Connect 2-wire smoke detectors to M302 Terminals 6(B-) and 9(D-), 7(B+) and 8(D+) as illustrated in Figure 2-22,
"Style D Circuit using M302," on page 40. IDC installation wiring must not exceed 25 ohms, 12-18 AWG (0.75 -
2
3.25 mm
) wire.
Power Connections
Power must be switched 24 VDC isolated, regulated, filtered and battery backed. Connect to M302 Terminals 3(-)
and 4(+) as illustrated in Figure 2-21, "Style B Circuit using M302," on page 39 and Figure 2-22, "Style D Circuit
using M302," on page 40.
Test Switch
The M302 includes a magnetic test switch sensor located near the center front of the module. Activation of this
switch by test magnet P/N M02-04-00 will cause an open circuit indication in the Style B/D loop.
M302 Monitor Module Notes
IDC and power connections are supervised by the M302 and reported to the MS-9200
1.
Maximum current in alarm is 90 mA power-limited
2.
See "Power Supply Calculations" on page 77, for power supply calculations
3.
36
Document #50428
Rev.C1
2/15/99
Status LED
Rotary Decade Address Switches
Magnet Test Position
P/N 50428:C1
2
) wire.
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