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

To install the wiring for the relays, disconnect the connector from the header on the PCB. Strip the insulation of each wire back
approximately 1/4 in. (6.5 mm), insert the bare wire into the terminal and tighten the screw clamp. Ensure that the wire cannot easily be
pulled from the connector.
2.6 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 of 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 sickness or death.
2.7

Interfacing Macurco Sensors

DVP-120
Macurco sensors with current loop outputs may be used with the DVP-120. See macurco.com for information on compatible 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. Polarity of the current loop connections is marked on the printed circuit board of the sensor.
Figure 2-7 Horn & Strobe Connector
Maximum Run Length (ft.)
Wire gauge
(feet)
24 200
22 340
20 480
18 850
Table 2-3 Wire gauge for Horn & Strobe functions
! WARNING
11
(meters)
61
103
147
215