Horn & Strobe Connection; Interfacing Macurco Sensors - Macurco DVP-120C User Instructions

Macurco DVP-120C Manual
3.2.5 Horn & Strobe Connection
The external horn and strobe connections are available at the modular connector S H (see Figure 2 for details). S H
as a 4-position connector, similar to the sensor interface connectors.
To install the wiring for the horn or strobe, disconnect the connector from the header on the PCB. Strip the
insulation off each wire back approximately 0.25 in. (6 mm), insert the bare wire into the terminal and tighten the
screw clamp. Ensure that the wire cannot easily be pulled from the connector. When all wires are connected, seat
the modular connector into the PCB header; ensure that the latch engages. Refer to Table 3-3 for recommended
wire gauge vs. run length for the horn & strobe functions (maximum 2.5-volt drop in the wire). The Strobe and Horn
circuits are Class 2 control circuits, so Class 2 conductors should be used.
For UL 2017, DVP-120C was tested with one Listed Horn/Strobe model 78-2900-0211-X where X represents lens
cover color, R for red lens cover, G for green lens cover, B for blue lens cover, O for amber lens cover, C for clear lens
cover.
Immediately exit any environment that causes an alarm condition on the sensor.

3.2.6 Interfacing Macurco Sensors

Macurco sensors with current loop outputs may be used with the DVP-120C. See www.macurco.com for information
on compatible Macurco gas transducers. See specific information on other manufacturer's transducers.
REV – 1.0
Figure 3-8 Horn & Strobe Connector
Maximum Run Length
Wire gauge
(feet)
24 200
22 340
20 480
18 850
Table 3-3 Wire gauge for Horn & Strobe functions
WARNING
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(meters)
61
103
147
215
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