Mains Power Connection; Fan Relay Connection; Alarm Relay Connection; 12-Series Line Voltage - Macurco CX-6 Manuel D'instructions

Macurco CX-xx Manual (Rev-1.0) Eng
3.3.1.1

Mains Power Connection

Connect the CX-6 to Class 2 listed power supply only. It is suggested to use a separate transformer for powering the
unit or units because of possible interferences from other devices on the same power supply. Connect the CX-6 to
the control cables with terminal plugs. When making connections, make sure the power is off. There are two
terminals for Power: 12 to 24 VAC or 12 to 32 VDC, with no polarity preference
Ensure that the wire cannot be easily pulled from the connector. Plug the modular connection into the Fan/Power
connection and ensure that it latches into the header properly.
3.3.1.2

Fan Relay Connection

All of the SPDT Fan relay terminals are available at the Fan/Power modular connector. Each Fan relay terminal
normally open, common and normally closed (NO, COM and NC) can accommodate a wire size 12 to 22 AWG. To
install the wiring for the relays, disconnect the connector from the header. 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. Plug the modular connection into the Fan/Power connection and
ensure that it latches into the header properly.
3.3.1.3

Alarm Relay Connection

The external alarm connections (A and B) are available at the Alarm modular connector. There is no polarity for
these connections. To install the wiring for the alarm contacts, disconnect the connector from the header on the
detector. 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. When the wires are
connected, seat the modular connector into the header ensuring that the latch engages.
3.3.1.4 4-20 mA Signal Connection
The positive and negative 4-20mA signal connections (+ and -) are available at the 4-20mA modular connector, a 2-
position connector. To install the wiring for the 4-20 mA contacts, disconnect the connector from the header on the
detector. 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. When the wires are
connected, seat the modular connector into the header ensuring that the latch engages.

3.3.2 12-Series Line Voltage

With the exception of the safety ground, all field wiring is completed via modular connectors (provided). After
wiring, simply plug the modular connectors into the matching connectors on the back side of the detector.
NOTE: 22 to 12 AWG wire shall be used. Wire used shall meet the temperature range of the detector i.e. 0°F to 125°
F (-18°C to 52°C).
3.3.2.1 Power Connection
Mains connections should be done in accordance with National and Local Electrical Codes. Only qualified personnel
should connect Mains power to any device. Macurco recommends a minimum wire size of AWG18 and the wire
insulator must be rated for 140°F (60°C) service. The modular connector will accept wire from 12 to 22 AWG.
The safety ground wire should be secured to the ground screw of the metal electrical box. Tighten the screw and
make sure the wire is snug. Ensure that the wire cannot be pulled out from under the screw.
REV – 1.1 [34-2900-0512-0 ] 19 | P a g e