DSC RM-2 Manual de Usario
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PRM-2W/4W Polarity Reversal Modules
Installation Instructions
Introduction
The PRM series modules are Polarity-Reversal Modules for use with the FSA series of 2
and 4 wire smoke detectors and smoke alarms with integral sounders. These modules
provide a 'Tandem' connection such that when one smoke detector goes into alarm,
all smoke detector horns will sound. When the control panel is initiated into alarm, it
signals the PRM module to reverse the polarity of the power to the connected smoke
detectors. Upon Power Polarity Reversal, all connected smoke detectors will sound
their integral horn.
Specification (refer to Table 1)
Power Supply (Range) ...........................................................................12-15VDC
Current Draw (Standby) ......................... PRM-2W: 30mA max. / PRM-4W: 10mA
Current Draw (In-Alarm) ......................... PRM-2W: 50mA max. / PRM-4W: 25mA
Smoke Loop Alarm Current.................................................................1.0A (max.)
Operating Environment ..... 0°C-49°C/32°F-120°F (5-93% RH, non-condensing)
Models
PRM-2W ................................................................................. 2-wire (board only)
PRM-2WC.................................................................................. 2-wire (enclosed)
PRM-4W ................................................................................. 4-wire (board only)
PRM-4WC.................................................................................. 4-wire (enclosed)
Interconnection of Smoke Detectors
PRM-2W is for use with FSA-210 series 2-wire smoke detectors with integral horns. This
module includes a Class B/Style B 2-wire smoke detector zone which provides an inter-
face for control panels that do not have a compatible 2-wire smoke detector zone.
Connection of the module to the control panel is a typical 4-wire type where a reset-
table power output and a panel fire zone input is provided. The module provides a
N.O. dry contact as the initiating device for the panel fire zone. The module monitors
the Bell output of the panel to determine when a fire alarm has been initiated in the
panel.
When the module detects a temporal pattern, or a pulsing output on the bell circuit,
it will reverse the power to the connected smoke detectors signaling them to sound
their horns. Alternately, the module can be triggered to reverse the polarity with a dry
contact from the control panel or from an external relay contact that is activated by an
output from the control panel (see Fig. 1 for wiring details).
NOTE: This module can be used with FSA-210 series smoke detectors without an integral
horn and thus provide a compatible interface to control panels that do not have a 'com-
patible' 2-wire smoke detector zone. For this application, the Polarity Reversal function
would not be used.
PRM-4W is for use with the FSA-410 series 4-wire smoke detectors with integral horns.
This module requires resettable power from the control panel. The dry contact(s) in the
smoke detectors are wired directly to the fire zone in the control panel.
The module monitors the Bell output of the panel to determine when a fire alarm has
been initiated in the panel. When the module detects a temporal pattern, or a pulsing
output on the bell circuit, it will reverse the power to the connected smoke detectors
signaling them to sound their horns. Alternately, the module can be triggered to re-
verse the polarity with a dry contact from the control panel or from an external relay
contact that is activated by an output from the control panel. 4-wire smoke detectors
require 'power' supervision.
2
The RM-2 module must be installed beyond the last detector to monitor power to
the detectors. If power fails, the RM-2 will open the detection loop and initiate a
trouble condition in the control panel for that zone (see Fig. 2 for wiring details).
NOTE: The PRM-4W module is also used with the FSA-410(D) series of smoke alarms.
These smoke alarms are only ULC Listed for use in Canada (see Fig. 3 for wiring details).
Installation
Wire module to control panel and smoke detectors (Table 1 and Figure 1, 2 or 3). PRM
modules can be mounted directly in the control panel using the three mounting nylon
standoffs provided. PRM xC modules are equipped with a plastic enclosure for exter-
nal mounting. The plastic enclosure can also be mounted on top of a 2” electrical box
for metal conduit connections. To test the system, activate trigger to verify operation.
Figure 1 - PRM-2W (2-Wire Smoke Detectors)
Maximum operating voltage: 16.40 VDC
Compatibility Identifier: PR200
+12 GND T1 T2 P+ P- C NO EOLR EOLR RL Y1 RLY2
UA398
To Panel
Fire Alarm
Trigger
Bell
Panel EOLR
Relay
Control
Panel
NO
Com
Not Used
A
B
A N/O Contact Closure -
If a short circuit is detected at the trigger inputs, the module will reverse
the polarity on the smoke detector loop.
B Bell Circuit Follower -
If a pulsating voltage or temporal pattern is detected at the trigger input T2,
the module will reverse the polarity on the smoke detector loop.
FSA-210
2-Wire Smoke Detector
Refer to Table 1 for all
model names
* *
* Power Limited, Supervised
Input V12-15
DC
/ 1A (max.)
Use a Listed power supply
for protective signalling
systems or a control unit
auxiliary power output. Power
source shall be regulated,
resettable & Power Limited.
2200 Ohm
(Use DSC model EOLR-3)
Trigger Input Options:
To panel
Fire Zone
Class B / Style B
(IDC)
Trigger connections must be in
conduit (20ft max.) and in the same room
{See Note 1}
{See Note 2}
NOTE 1: The drawing above shows a Bell Output with a switched negative. If the Bell Output is a
switched positive, connect the positive [+] terminal to T2.
NOTE 2: It is important that the zone loop on the control panel is current limited, when used with
a 2-wire loop. Ensure the maximum current of the 2-wire loop on the control panel does not exceed
the rating of the PRM-2W (1A@24V
DC
).
3
Figure 2 - PRM-4W (4-Wire Smoke Detectors)
+12 GND T1 T2 P+ P
UA398
To Panel
Fire Alarm
Trigger
Bell
Control
Panel
Relay
NO
Com
Not Used
A
B
Control Panel
Zone Class B /
Style B (IDC)
(see Note 2)
(Refer to Table 1 for all model names)
FSA-410(S) 4-Wire Smoke
Detectors with Integral Sounder
12V /1ADC
BLK
RED
NO
Panel EOLR
DSC RM-2 Rela y
COM
NC
Refer to the RM-2 Module Installation Instructions for more details
Trigger connections must be in conduit
(20ft max.) and in the same room
* * *Power Limited, Supervised
Input 12 - 15 V
DC
/ 1A (max.)
Use a Listed power supply for
protective signalling systems
or a control unit auxiliary
power output. Power source
shall be regulated, resettable
and Power Limited.
CNO
{Refer to Note 1}
NOTE 1: The drawing above shows a Bell Output with a
switched negative. If the Bell Output is a switched positive,
connect the positive [+] terminal to T2.
NOTE 2: Ensure that the zone loop on the control
panel is current limited, when used with a 2-wire loop.
Ensure the maximum current of the 2-wire loop on
the control panel does not exceed the relay contact
rating of the FSA-410 4-wire Smoke Detector (2A@30V
DC
).
Especificaciones del producto
| Marca: | DSC |
| Categoría: | Detector |
| Modelo: | RM-2 |
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