GE NX-8V2 V. TERMINAL DESCRIPTIONS

6 NX-8V2 Control

V. TERMINAL DESCRIPTIONS

TERMINAL DESCRIPTION

R1 House Telephone Ring (Grey).

R Telephone Ring (Red).

T Telephone Tip (Green).

T1 House Telephone Tip (Brown).

EARTH Earth Ground. Connect to a cold water pipe or a 6 to 10 foot driven rod.

AC AC input. Connect to a 16.5V 40 or 50 VA Class ll U.L. approved transformer.

BELL + & BELL

If used as a siren output (default), the speaker rating should be 15 watt at 8 or 16 ohm, or 30/40 watt at 4, 8,

or 16 ohms. If voltage output is selected in location 37, this output becomes voltage output, 12VDC, 1 Amp

maximum load. NOTE: A 3.3K Ω resistor may be required across the bell terminals when a 12 VDC

siren is used. If no resistor is used, you may experience voltage leakage into the siren, which will

cause these devices to output a small signal.

DATA Connect to the data terminal on the keypads and the expanders. Maximum number of devices (keypads +

expanders) is 32. See AMaximum Wire Run@ chart below.

COM Connect to the Common terminal on the keypads and the expanders.

POS Connect to the POS terminal on the keypads and the expanders. Individually, this terminal is limited to 1

Amp. Combined, this terminal and AUX PWR + are limited to 2 amps total current.

SMOKE+ Smoke detector power 12VDC, 1.5 amps maximum (For those jurisdictions which allow the Priority zone to

be used with smoke detectors.)

COM Connect negative wire of powered devices such as motion detectors and smoke detectors.

AUX + Connect positive wire of all powered devices except smoke detectors and keypads. Individually, this terminal

is limited to 1 Amp. Combined, this terminal and KP POS are limited to 2 amps total current.

ZONE 8

Connect to one side of zone 8 loop. Connect the other side to com terminal. Open or short causes alarm.

Zone 8 may be used for a two-wire smoke detector using a 680 Ω E.O.L. resistor. Refer to wiring diagram.

Program location 37, segment 6, option 1.

COM Common (-) terminal for zones 7 & 8. (See the wiring diagram for examples.)

ZONE 7 Connect to one side of zone 7 loop. Connect the other side to COM terminal. Open or short causes alarm.

ZONE 6 - ZONE

Connect as described for zones 7 & 8. Only zone 8 can be a two-wire zone. (See the wiring diagram for

examples.)

AUX 1-AUX 4

Connect negative lead of low current device [relay, LED (install 1KΩ resistor in series with LED), etc.].

Connect positive lead of device to COM. Current is limited to 50mA when output is negative, and 250FA

when output is positive.

(Note: These numbers are for one keypad at the end of the wire. When connecting more than one keypad to the end of the wire, a

higher gauge wire will be required.)

WHEN CONNECTED TO NX-8V2 WHEN CONNECTED TO NX320-E

Length in feet Wire Gauge Wire Gauge

250 24 22

500 20 18

1000 18 16

1500 16 14

2500 14 12