Potter Nohmi MOM-4 User manual

MKT. #8830003 - REV A
3/11
PRINTED IN USA PAGE 1 OF 3
MOM-4
MONITORED OUTPUT MODULE
Potter Electric Signal Company, LLC • St. Louis, MO • Cust Service: 866-956-1211 • Tech Support: 866-240-1870 • Canada: 888-882-1833 • www.pottersignal.com
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 OUT+, OUT- 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 OUT+, OUT- may damage the module.
If this should occur, the performance of the Addressable Module
must be veried.
For more information refer to 5403556, PFC-8060/8500 Installation,
Operation and Programming Manual.
Description
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 OUT+, OUT- 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 condi-
tion, 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.
Installation
Figure : Installation into the compatible electrical box
Features
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

MKT. #8830003 - REV A
3/11
PRINTED IN USA PAGE 2 OF 3
MOM-4
MONITORED OUTPUT MODULE
When connecting the above-described module-to-module for NAC synchronization:
The interconnection between equipment shall be within a common enclosure.1.
The circuit connections extended to additional re alarm control unit equipment shall be made within 20 feet(6.1m) of each other and be 2.
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.
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 Func-•
tions for that zone.
Figure 3: Output Connected to a Releasing Device
ReleasingDevice
S+
S- OUT +
LED
JP1
S LC  Loop Endoflinedevice
5.1k ohm1/2W
SelectDC
24VDC(+)
24VDC(- )
24VDC(+)
24VDC(- )
FromFACPor
pre vious module
Tothenextmodule
24+
24-
OUT -
FromFACPor
pre vious module
Tothenextmodule
S+
S- OUT +
LED
JP1
S LC  Loop
+
-
+
-
+
-
Endoflineresistor
5.1k ohm1/2W
SelectDC
24VDC(+)
24VDC(- )
24VDC(+)
24VDC(- )
FromFACPor
pre vious module
Tothenextmodule
24+
24-
OUT -
FromFACPor
pre vious module
Tothenextmodule
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 diagram
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
Figure 2: Output Connected to a Notication Appliance Circuit