Janus MOM-4 User manual

DS1124 Revised: 10-Sep-2018
MOM-4
Monitored Output Module
© 2011 Janus Fire Systems. All rights reserved (4/2011) Janus Fire Systems® is a registered trademark of Janus Fire Systems.
The MOM-4 module provides a programmable source of power to control and operate output
devices including notication appliances and releasing devices. Additionally, it continuously
supervises wiring connected to terminals A+, A- for open or short circuits and 24+ and 24- when
24VDC is applied.
MOM-4 employs one red LED to indicate the status. In normal condition, the LED ashes. When the
output is activated, the LED will turn on constantly. In case of trouble, the LED will turn off.
Since the system allows maximum 13 LEDs on devices to turn on constantly, if system already has
13 lighted LEDs on devices, MOM-4 will not turn on the LED and keep ashing even if the output
of MOM-4 is activated.
P/N 99239
• 24 VDC Monitored Output Control
• 5.1k ohm EOL
• NAC or Releasing Control
• LED indicates activation of module
• All terminals are power limited
• Listed with Potter/Amseco®, Gentex®, & Cooper
Wheelock® sync modules and devices
• Maximum standby and alarm current 250 μA
• For JFS-A Series control panels or JFS-IP Series control
panels using Nohmi protocol
Features
Description
Figure 1: Installation into the compatible electrical box
Installation

DS1124 Revised: 10-Sep-2018
The following modules can be used when the NACs are synchronized:
• SM-12/24 (Wheelock)
• DSM-12/24 (Wheelock)
• SMD10-3A (Amseco)
Note: Refer to respective Module manuals about connection method, connectable NACs
Each addressable module, smoke sensor, heat detector and combination sensor/detector must have
the address set before connecting the device to the SLC loop. The address is set using the hand held
device programmer or the addressing feature on the control panel.
Before connecting a device to the SLC loop, take the following precautions to prevent potential damage
to SLC or device. Verify the following:
1. Power to the device is removed.
2. Field wiring is correctly installed.
3. Field wiring has no open or short circuits.
Document discrepancies and notify appropriate personnel.
When connecting the above-described module-to-module for NAC synchronization:
1. The interconnection between equipment shall be within a common enclosure.
2. The circuit connections extended to additional re alarm control unit equipment shall be made
within 20 feet (6.1m) of each other and be enclosed within conduit or equivalently protected
against mechanical injury.
When NACs are connected to MOM-4 module, each MOM-4 module shall be separated by short
circuit isolators (SCI) to avoid inuence from a short-circuit of the SLC Signal Line Circuit.
Wiring Diagram
Setting the Address
Figure 2: Output Connected to a Notication Appliance Circuit
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SLC loop wiring (signal line circuit) is power limited. Power supply for terminals 24+ and 24- must
be power limited, so that the wiring for terminals A+, A- is power-limited. All terminals should be
wired in accordance with the requirements of NFPA 70 (NEC) and NFPA 72 (National Fire Alarm
Code). Failure to follow the wiring diagrams in the following pages will cause the system to not
operate as intended. For further information, refer to the control panel installation instructions.
There is a possibility that the relay in MOM-4 module has been accidentally set to “latched”
position during shipment. THE SIGNAL LINE CIRCUIT (SLC) MUST BE CONNECTED BEFORE
CONNECTING 24VDC. If power is applied to the terminals 24+ and 24- and the relay is latched,
a short circuit of wires connected to terminals A+, A- may damage the module. If this should
occur, the performance of the Addressable Module must be veried.

DS1124 Revised: 10-Sep-2018
Connection as a Releasing Module
• In the case of using a solenoid valve of NN100 system, connect wires to wiring cable #1 and #3 of
the valve, and the soak time setting of the relevant address shall be congured as “5” seconds on
the program.
• Only one Releasing Device can be connected per MOM-4 module.
• The Manual Release Function immediately activates the Suppression System in the same zone. It
overrides Delay Time and Abort Functions for that zone.
Figure 3: Output Connected to a Releasing Device
Before connecting an output device, connect the module to the SLC loop and reset it with the
FACP. This is necessary to ensure that the internal relay is unlatched. Connection of the module
with this relay in the latched state will activate the output device possibly causing damage.
Wiring (Continued)
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DS1124 Revised: 10-Sep-2018
1102 Rupcich Drive
Millennium Park
Crown Point, IN 46307
TEL: [phone] FAX: [phone]
e-mail: info@janusresystems.com
www.janusresystems.com
The seller makes no warranties, express or implied, including, but not limited to, the implied warranties of merchantability and
tness for a particular purpose, except as expressly stated in the seller’s sales contract or sales acknowledgment form. Every
attempt is made to keep our product information up-to-date and accurate. All specic applications cannot be covered, nor can
all requirements be anticipated. All specications are subject to change without notice.
Note: Approvals/Listings maintained by and manufactured by Potter Electric Signal Company.
Ordering Information
Model Number Description P/N
MOM-4 Monitored Output Module 99239
N/A EOL Resistor/Diode Assembly for Releasing Circuit 18712
SMD10-3A Sync Module 18710
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