INSTALLATION AND MAINTENANCE INSTRUCTIONS
M502M Interface Module
Specifications
Normal Operating Voltage:
EOL Resistance:
Maximum IDC wiring resistance:
External Supply Voltage (between Terminals T3 and T4)
DC Voltage:
Ripple Voltage:
Current:
Temperature Range:
Humidity:
Dimensions:
Accessories:
Before Installing
This information is included as a quick reference installation
guide. Refer to the control panel installation manual for detailed
system information. If the modules will be installed in an exist-
ing operational system, inform the operator and local authority
that the system will be temporarily out of service. Disconnect
power to the control panel before installing the modules.
NOTICE: This manual should be left with the owner/user of this
equipment.
General Description
The M502M Interface Module is intended for use in intelligent,
two-wire systems, where the individual address of each module
is selected using the built-in rotary decade switches. This mod-
ule allows intelligent panels to interface and monitor two-wire
conventional smoke detectors. It transmits the status (normal,
open, or alarm) of one full zone of conventional detectors back
to the control panel. All two-wire detectors being monitored
must be UL compatible with this module. The M502M has a
panel controlled LED indicator.
Compatibility Requirements
To ensure proper operation, these modules shall be connected to
listed compatible system control panels only.
Mounting
The M502M mounts directly to 4" square electrical boxes (see
Figure 2A). The box must have a minimum depth of 2
mounted electrical boxes (SMB500) are available from System
Sensor.
Wiring
NOTE:
All wiring must conform to applicable local codes, ordi-
nances, and regulations. This module is intended for
power-limited wiring only.
1. Install module wiring in accordance with the job drawings and
Compatible Two-wire System Sensor Smoke Detectors for Use with M502M with Zone Identifier A:
Detector
Compatability
Model
1451
2451
2451TH
1400
2400
2400TH
1100
1151
2100
2100T
2151
M500-11-00
15 to 32 VDC
3.9K Ohms
25 Ohms
18-28 volts power limited
0.1 Volts RMS maximum
90mA per module
32˚F to 120˚F (0˚C to 49˚C)
10% to 93% Noncondensing
" H x 4" W x 1
1
4
/
2
SMB500 Electrical Box
Detector
ID
Type
A
Ionization
A
Photoelectric
A
Photoelectric with Thermal
A
Ionization
A
Photoelectric
A
Photoelectric with Thermal
A
Ionization
A
Ionization
A
Photoelectric
A
Photoelectric with Thermal
A
Photoelectric
" D (Mounts to a 4" square by 2
1
/
4
appropriate wiring diagrams.
2. Set the address on the module per job drawings.
3. Secure module to electrical box (supplied by installer), as
shown in Figure 2A.
Figure 1. Controls and indicators:
Figure 2A. Module mounting with barrier:
". Flush
1
/
8
Base
Model
B401/B
B401/B
B401/B
N/A
N/A
N/A
N/A
B110LP/B401
N/A
N/A
B110LP/B401
1
A Division of Pittway
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
" deep box.)
1
/
8
9
0
6 7 8 9
5
4
8
1
3
2
7
1
2
0
TENS
6 7 8 9
5
6
3
4
3
5
4
2
1
0
ONES
ADDRESS
LOOP
Figure 2B:
A78-2610-12
Base
Max
Identifier
Detectors
A
20
A
20
A
20
—
20
—
20
—
20
—
20
A
20
—
20
—
20
A
20
A78-2318-06
A78-2611-10
I56-1179-03
Need help?
Do you have a question about the SYSTEM SENSOR M502M and is the answer not in the manual?
Questions and answers