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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.
Produktspecifikationer
| Varumärke: | DSC |
| Kategori: | Detektor |
| Modell: | RM-2 |
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