SYSTEMSENSOR M502M

500 Series
Intelligent Modules
The System Sensor intelligent module products are
designed to meet a wide range of applications.
Features
•SEMS screws for easing wiring
•Panel controlled status LED (except M501M)
•Analog communications
•Rotary address switches (except M500X)
•Low standby current
Monitor and control modules can be used to supervise and activate
sounders, strobes, door closers, pull stations, waterflow switches,
conventional smoke detectors, and more. Each module is rigorously
designed and tested for electromagnetic compatibility and
environmental reliability, in many cases exceeding industry standards.
Modules are addressed with easy-to-use rotary code switches. Full
size modules mount in standard 4 in × 4 in × 21⁄8 in junction box.
Wiring terminals are easily accessible for troubleshooting.
•Mounts in standard 4˝ junction box
M500M Monitor Module, M501M Mini Monitor Module, and
M500DM Dual Input Monitor Module
System Sensor monitor modules provide an interface to contact
devices, such as security contacts, waterflow switches, or pull
stations. They are capable of Styles A and B supervised wiring to
the load device (M500M device is capable of Style D). Conventional
4-wire smoke detectors can be monitored through their alarm
and trouble contacts, wired as an initiating loop to the module.
In addition to transmitting the supervised state of the monitored
device (normal, open, or short), the full analog supervision
measurement is sent back to the panel. This allows detection of
impedance changes in the supervised loop to the monitored device.
The M500DM module is capable of monitoring two separate Class B
circuits simultaneously, making it ideal for waterflow tamper switch
and flow switch monitoring. The compact size of the M501M module
allows it to fit inside devices or junction boxes behind devices.
Agency Listings
M500X Isolator Module
The M500X Isolator Module is an automatic switch that opens
when the line voltage drops below four volts. Isolator modules
should be spaced between groups of sensors or modules in a loop
to protect the rest of the loop. If a short occurs between any two
isolators, then both isolators immediately switch to an open circuit
state and isolate the devices between them. The remaining units
on the loop continue to fully operate. A maximum of 25 devices are
recommended for each group.
M502M Zone Interface Module
The M502M Zone Interface Module allows intelligent panels to
interface and monitor 2-wire conventional smoke detectors. All
continued
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2-wire detectors being monitored must be UL or ULC compatible
with the module. The M502M module is addressed through the
communication line of an intelligent system. It transmits the status
of one zone of 2-wire detectors to the fire alarm control panel. Status
conditions are reported as normal, open, or alarm. The interface
module supervises the zone of detectors and the connection of the
external power supply.
M500S Control Module
The M500S Control Module provides supervised monitoring of
wiring to load devices that require an external power supply to
operate, such as horns, strobes, or bells. It is capable of Styles Y and
Z supervision. Upon command from the control panel, the M500S
module will disconnect the supervision and connect the external
power supply across the load device. The disconnection of the
supervision provides a verification to the panel that the control relay
actually turned on. The external power supply is always relay isolated
from the communication loop, so that a trouble condition on the
power supply will never interfere with the rest of the system. Full
analog measurement of the supervised wiring is transmitted back to
the panel and can be used to detect impedance changes or other
special test functions.
M500R Relay Module
The M500R Relay Module contains two isolated sets of Form C
contacts, which operate as a DPDT switch. The module allows the
control panel to switch these contacts on command. No supervision
is provided for the notification appliance circuit.
M500DR Dual Audio Riser Module
The M500DR module is a special applications control module that is
designed to supervise a loop of speakers under normal conditions.
When commanded by the control panel, the module then connects
either of two audio amplifier circuits to the speakers. In this way,
two separate audio messages can be broadcast over a single set of
speakers with a single module.
M500FP Firefighter Phone Module
The M500FP module is intended to monitor and control a loop of
firefighter phones. It has the ability to differentiate between normal,
off-hook, and trouble conditions. When taken off-hook, a phone will
immediately receive a ringing tone, and the panel will receive an offhook indication. The panel can then connect that off-hook phone to
the main riser for the system.
500 Series Intelligent Module Specifications
General Specifications
Operating Voltage
Communication Line Loop
Impedance
Temperature Range
Relative Humidity
Shipping Weight
Dimensions
Specifications, M502M
Standby Current
15 to 32 VDC
40 Ω max.
32°F to 120°F (0° to 49°C)
10% to 93% noncondensing
M501M: 1.2 oz (37 g)
Others: 6.3 oz (196 g)
M501M: 2.7 in W × 1.7 in H × 0.5 in D
Others: 4.25 in W × 4.65 in H × 1.1 in D
300 µA max @ 24 VDC (one
communication every 5 sec. with LED
enabled)
External Power Supply
18 to 28 VDC (100 mV ripple max.)
End-of-Line Resistance
3.8 kΩ (included)
External Supply Standby Current 11.5 mA @ 24 VDC (nominal)
External Supply Alarm Current
80 mA @ 24 VDC (nominal)
Specifications, M500R
Standby Current
300 µA max @ 24 VDC (one
communication every 5 sec. with LED
enabled)
LED Current
5.5 mA (with LED latched on)
Relay Contact Ratings
3.0 A @ 30 VDC resistive
0.9 A @ 110 VDC resistive
0.9 A @ 125 VAC resistive
0.5 A @ 125 VAC inductive (PF=.35)
0.7 A @ 75 VAC inductive (PF=.35)
Specifications, M500X
Standby Current
Isolation Impedance
Fault Detection Delay
Fault Detection Threshold
Line Restoration Threshold
Specifications, M500DM
Standby Current
450 µA max.
2.25 kΩ to 2.9 kΩ
250 ms min.
4 Volts
7 Volts
750 µA max. @ 24 VDC (one
communication every 5 sec. with
47k EOL)
Alarm Current
970 µA max. (one communication every
5 sec.); 6 mA (with LED latched on)
End-of-Line Resistance
47 kΩ (two included)
Specifications, M500M, M500S, M501M
Standby Current
400 µA max @ 24 VDC (one
communication every 5 sec. with
47k EOL); 550 µA max @ 24 VDC (one
communication every 5 sec. with
EOL<1k); 5.5 mA (with LED latched on)
End-of-Line Resistance
47 kΩ (included)
Specifications, M500FP
Standby Current
2.4 mA max. (one communication every
5 sec. with LED enabled)
Comm. Line Current
4.0 mA max. (no communication, LED
off, 1200 Ω phone)
Acceptable Phone Resistance
1200 Ω (nominal)
End-of-Line Resistance
3.9 kΩ (included)
3825 Ohio Avenue • St. Charles, IL 60174
Phone: 800-SENSOR2 • Fax: 630-377-6495
©2007 System Sensor.
Product specifications subject to change without notice. Visit systemsensor.com for
current product information, including the latest version of this data sheet.
A05-1029-004 • 10/08 • #2050