Interlogix NX-8E Installation Manual Manuel d'utilisateur télécharger pdf (Page 67)

Chapter 3: Reporting codes

NX-8E Control Panel Installation Manual 63

Voltage tables

The following tables show normal values for control panel voltages. if these

values are incorrect, you may experience trouble or fault conditions.

Table 11: Phone or power voltage values

Phone or power voltage

Value

T to R and T1 to R1

50 VDC not communicating (on hook)

T to R

7 VDC communicating (off hook)

T1 to R1

0 VDC communicating (line seized)

AC to AC

17.5 VAC

Data to common

6 VDC nominal (1.5 to 10 V, fluctuates)

Keypad positive to common

13.5 VDC

Aux power to common

13.5 VDC

Battery to battery

13.5 VDC

Table 12: Zone voltages ( 10%)

Zone condition

Value

Zones, not doubled

Open

13 VDC

Good (3.3 kohm resistor)

6.6 VDC

Shorted

0 VDC

Two-wire smoke (680 ohm resistor)

10.75 VDC

Zones, doubled

Open

13 VDC

Only low zone OK (3.74 kohm resistor)

7 VDC

Only high zone OK (6398 kohm resistor)

9 VDC

Both high and low zones OK

5.5 VDC

Shorted

0 VDC

Normally open zones (such as four-wire smoke)

Use low zone resistor (3.74 kohm resistor).

Cannot use the corresponding high zone.

1 2 ... 62 63 64 65 66 67 68 69 70 71 72 ... 112 113

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Interlogix NX-8E Installation Manual Manuel d'utilisateur Page 67

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