System Sensor M502M User Manual
M502m interface module
SS-460-003
1
I56-3854-001
M502M Interface Module
INSTALLATION AND MAINTENANCE INSTRUCTIONS
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
www.systemsensor.com
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 existing
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 module
allows intelligent panels to interface and monitor two-wire con-
ventional 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
1
⁄
8
˝. Surface mounted
electrical boxes (SMB500) are available from System Sensor.
Figure 1. Controls and indicators:
Figure 2A. Module mount-
ing with barrier:
Specifications
Normal Operating Voltage:
15 to 32 VDC
Maximum Current Draw:
5.1mA (LED on)
Average Operating Current:
300µA, 1 communication and 1 LED flash every 5 seconds, 3.9k eol
EOL Resistance:
3.9K Ohms
Maximum IDC wiring resistance:
25 Ohms
IDC Supply Voltage (between Terminals T10 and T11)
Regulated DC Voltage:
24 VDC power limited
Ripple Voltage:
0.1 Volts RMS maximum
Current:
90mA per module
Temperature Range:
32˚F to 120˚F (0˚C to 49˚C)
Humidity:
10% to 93% Non-condensing
Dimensions:
4
1
⁄
2
˝ H x 4˝ W x 1
1
⁄
4
˝ D (Mounts to a 4˝ square by 2
1
⁄
8
˝ deep box.)
Accessories:
SMB500 Electrical Box
Wiring
NOTE: All wiring must conform to applicable local codes, ordi-
nances, and regulations. This module is intended for power-lim-
ited wiring only.
1. Install module wiring in accordance with the job drawings
and 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.
Compatible Two-wire System Sensor Smoke Detectors for Use with M502M with Zone Identifier A:
Detector
Compatibility
Detector
Base
Base
Max
Model
ID
Type
Model
Identifier
Detectors
1451
A
Ionization
B401/B
A
20
2451
A
Photoelectric
B401/B
A
20
2451TH
A
Photoelectric with Thermal
B401/B
A
20
1400
A
Ionization
N/A
—
20
2400
A
Photoelectric
N/A
—
20
2400TH
A
Photoelectric with Thermal
N/A
—
20
1100
A
Ionization
N/A
—
20
1151
A
Ionization
B110LP/B401
A
20
2100
A
Photoelectric
N/A
—
20
2100T
A
Photoelectric with Thermal
N/A
—
20
2151
A
Photoelectric
B110LP/B401
A
20
*Used in combination with MTL isolator model MTL3043.
C0450-03
Figure 2B:
C0218-03
C0449-03
I56-3854-00
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