Vistaquest N7227V5 Manuel d'utilisateur télécharger pdf (Page 15)

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Section 3. INSTALLING REMOTE KEYPADS

This section lists the wired keypads that may be used and provides

instructions for wiring and mounting the keypads.

A preliminary check-out procedure is also provided to ensure that the

connected keypads are functioning properly in the system.

Keypads That May Be Used

• Fixed-Word Display: 4127, 4137AD, 6127, 6128, 6137

• Alpha Display: 5137AD, 6138, 6139

• Up to 4 keypads, independent of auxiliary power considerations (you may

need to use an auxiliary power supply if the 500mA aux. output is

exceeded)

If you are going to use a 4285 Phone module, you MUST use addressable

keypads (4137AD, 5137AD, 6128, 6137, 6138, 6139) in the system, but set to

the non-addressable mode (address 31).

Wiring To The Keypads

1. Determine wire gauge by referring to the wiring length/gauge chart below.

For devices (Keypads, RF Receivers, etc.) connected to a single 4-wire

run, determine the current drawn by all units connected to the single wire

run, then refer to the Wiring Run chart to determine the maximum wire

length that can be safely used for each wire size. Current draw for all

devices can be found in the

SPECIFICATIONS AND ACCESSORIES

section.

Note: Refer to “Auxiliary Device Current Draw Worksheet” in the

FINAL

POWER UP

section for current draw for all keypads.

Maximum wire lengths for any device that is homerun to the control can also

be determined from the chart, based on the current draw of that device

alone.

Wiring Run Chart For Devices* Drawing Aux Power From The Control (12V+ & 12V–)

TOTAL CURRENT DRAWN BY ALL DEVICES CONNECTED TO A SINGLE WIRE RUN

Wire Size 50mA or less 100mA 300mA 500mA

#22 500 ft (152m) 250 ft (76m) 80 ft (24m) 50 ft (15m)

#20 750 ft (228.6m) 380 ft (116m) 130 ft (39.6m) 80 ft (24m)

#18 1300 ft (396m) 650 ft (198m) 220 ft (67m) 130 ft (39.6m)

#16 1500 ft (457m) 1000 ft (305m) 330 ft (100.5m) 200 ft (70m)

* Includes Keypads, RF Receivers, Relay Units, or 4285 Phone module.

The length of all wire runs must not exceed 1500 feet (457m) when

unshielded quad conductor cable is used (750 feet if shielded cable is used).

This restriction is due to the capacitive effect

on the data lines

when quad

cable is used.

2. Run field wiring from the control to the keypads (using standard 4-

conductor twisted wire cable using the wire gauge determined in step 1).

3. Connect remote Keypads to terminals 4, 5, 6, and 7 on the control board,

as shown in Figure 5.

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 87 88

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Vistaquest N7227V5 Manuel d'utilisateur Page 15

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