Operations; Power Up; Display Turned "On - Macurco CX-6 Manuel D'instructions

Macurco CX-xx Manual (Rev-1.0) Eng
The Line (L) and Neutral (N) wires should be stripped 1/4 in. (6.5 mm), insert the wire into the "L" and "N" wire
positions of the modular Fan/Power connector and tighten the screw clamp. 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.
3.3.2.2 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.
3.3.2.3 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.
3.3.2.4 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.

4 Operations

4.1 Power up

The CX-xx cycles through an internal self-test cycle for the first minute that it is powered. The unit will execute the
test cycle any time power is dropped and reapplied (i.e. power failure).
During the self-test cycle the unit will:
• Display the firmware version number, then count down from 60 to 0 (if the display setting is "On").
The alarm relay will be activated for 10 seconds and the fan relay for 60 seconds during the power-up cycle
•
(if PUt is ON).
• The indicator light (LED) will flash green during the self-test cycle.
• 4-20mA will ramp up to 16mA during the warmup (if 420 is ON and PUt is ON).
• At the end of the 1-minute cycle, the unit will take its first sample of the air and the indicator light will turn
solid green.

4.2 Display turned "On"

With the display ("dSP") setting turned "On", the detector will operate as follows:
REV – 1.1 [34-2900-0512-0 ] 20 | P a g e