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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 2 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.
Immediately exit any environment that causes an alarm condition on the sensor. Failure to do so may result in serious injury or death.
3.5 Interfacing Macurco Sensors
3.5.1
DVP-120
Macurco sensors with current loop outputs may be used with the DVP-120. See
Macurco gas transducers. See specific information on other manufacturer's transducers.
Power connections to Macurco sensors used with the DVP-120 are polarity-insensitive (no polarity) since a bridge rectifier is connected
to the power input terminals. All sensors used with the DVP-120 panel employ screw clamp terminal blocks for power and signal
connections. The polarity of the current loop connections is marked on the printed circuit board of the sensor.
3.5.2
DVP-120B
The Macurco MRS-485 Adapter converts the Macurco 6-Series 4-20mA analog output to a digital output for use with the DVP-120B and
other addressable network systems
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
13
(meters)
61
103
147
215
http://www.macurco.com
for information on compatible
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