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Terminal description – Interlogix NX-8 User Manual

Page 57

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NX-8 Control

57

TERMINAL DESCRIPTION

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 25, 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 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.

KP 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.

KP COM

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

KP POS

Connect to the POS terminal on the keypads and the expanders. This terminal and AUX PWR +

are limited to 1 amp total current when added together.

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 PWR+

Connect positive wire of all powered devices except smoke detectors and keypads. This terminal

and KP POS are limited to 1 amp total current when added together.

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 E.O.L. resistor. W3

must be set for two-wire smoke detector loop. For normal zone operation, W4 must be set.

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 1

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

diagram for examples.)

AUX 4 –

AUX 1

Connect negative lead of low current device [relay, LED(install 1k resistor in series with LED),

etc.]. Connect positive lead of device to AUX PWR +. Current is limited to 50mA when output is

negative, and 250 A when output is positive.

NETWORX KEYPAD MAXIMUM WIRE RUN

(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-8

WHEN CONNECTED TO NX-320

Length in feet

Wire Gauge

Wire Gauge

250

24

22

500

20

18

1000

18

16

1500

16

14

2500

14

12