LED Diagnostic Table:
LED
ON
OFF
Power (Green)
Normal operation
Loss of power to MOM5
Trigger (Green) MOM5 triggered (alarm condition)
MOM5 in standby (non-alarm condition)
Outputs (Red)
Output tripped due to a short circuit or overload condition
Normal operation
Terminal Identification:
Terminal
Function/Description
Legend
-- DC Input +
12 or 24VDC from power supply.
Trigger
This circuit is supervised by a 2.2 K EOL resistor. Initiating a short or open will
cause power to be dropped to all terminals marked Pos. (+) DC output (standby)
and supply power to all terminals marked Pos (+) DC output (alarm).
Input Neg (--),
Applying voltage to terminals marked Neg(-) input Pos (+) FACP signaling output in
Pos (+)
polarity shown will yield the same results as initiating trigger (mentioned above).
Neg (--) 1 thru 5
Supplies constant negative (-) voltage.
Pos (+) DC output (alarm)
Supplies positive (+) voltage when dry input or fire alarm (wet) trigger input.
Pos (+) DC output
Supplies positive (+) voltage in normal condition.
(standby)
Power is removed when either input trigger is activated.
N.C., C, N.O.
When the MOM5 is triggered the C and N.O. terminals will close and the
Dry output
C and N.C. terminals will open. This output is used to trip auxiliary devices.
e.g. HVAC Shutdown, Elevator Recall etc...
N.C., C, N.O.
Form “C” contacts used for signaling when no voltage is present at -- DC input +
Power Fail
terminals. Under normal conditions, terminals N.O. and C are open, N.C. and C are
closed. A occurance of trouble condition causes N.O. and C to closed and
N.C. and C to open.
Fig. 1
Typical Application Diagrams:
TRIGGER
NEG (-) INPUT POS (+)
EOL 2.2K
(+)
(-)
DC VOLTAGE INPUT
FROM FACP
SIGNALING
OUTPUT OR ACCESS
CONTROL DEVICE
N.C. INPUT FROM
FACP OR ACCESS
CONTROL DEVICE
TRIGGER
NEG (-) INPUT POS (+)
EOL 2.2K
(+)
(-)
DC VOLTAGE INPUT
FROM FACP
SIGNALING
OUTPUT OR ACCESS
CONTROL DEVICE
N.O. INPUT FROM
FACP OR ACCESS
CONTROL DEVICE
MOM5 module shown with wet and/or dry normally closed
trigger inputs (Non-Latching):
MOM5 module shown with wet and/or dry normally
open trigger inputs (Non-Latching):
2
