Linear VMC-1 manual Wiring Information, Cables and Wiring, Maximum Length for Cable Runs

Wiring Information

Cables and Wiring

Excellent locations to run cables include:

•Roof space

•False ceilings/ bulkhead area

•Through and/or around external walls

•Under floors (subject to access being available)

•Underground in conduit

✓NOTE: Keep Intercom cables far from any AC wiring. Avoid running intercom cable in parallel to AC or any other type of wiring. Avoid placing joins or splices in cables. Locate cables where there is access for future servicing.

Maximum Length for Cable Runs

The system can be “home-run wired” from a central point or “daisy chained” from station to station. However, the number of stations on a daisy chain run governs the overall length of the run. The tables below show the relationship between the length on a cable run and the number of room stations permitted and the maximum cable run to a Door Station.

✓NOTE: The tables are based on the use of Cat-5 or Cat-6 cable. Where required, the wire lengths maximum distances can be doubled by running 12 AWG speaker wire in parallel with the POS & NEG wires. It is important that the POS and NEG wires are balanced in terms of the type of wire and the number of wires being used - i.e. if a Cat-5 wire and 12 AWG speaker wire are being used for the positive connection, a Cat-5 wire and a 12 AWG speaker wire should also be used for the negative connection.

Cable Type and Configuration

The general intercom functions for VMC1 can be cabled using Cat-5 or Cat-6 cables. If required, 6-conductor telephone cables can be used provided the system is configured for 6-wire operation.

Be sure to clearly tag all cables to identify any damaged cables or other system faults. See the table below for Cat-5 wire color recommendations.

ROOM STATIONS SHOULD

BE AT LEAST TEN FEET

APART FROM ONE

ANOTHER

MAXIMUM CABLE LENGTH TO ROOM STATIONS

NUMBER OF STATIONS ALLOWED

100yards

50yards

33yards

25yards

1 Room Station

2 Room Stations

3 Room Stations

4 Room Stations

MAXIMUM CABLE LENGTH TO DOOR STATIONS

NUMBER OF STATIONS ALLOWED

80 yards

1 Door Station

MASTER STATION CONNECTION	VIDEO DOOR STATION	NON-VIDEO DOOR STATION	ROOM STATION
POS	Green White	Green White	Green White
NEG	Green	Green	Green
TC	Orange White	Orange White	Orange White
VLC			Orange
VLCx	Orange	Orange
COM1	Blue White	Blue White	Blue White
COM2	Blue	Blue	Blue
MUS1			Brown White
MUS2			Brown
VIDx	Signal
GND	Ground
AUX			Yellow
Optional Video Signal	Brown White
Optional Video Ground	Brown

WIRING

Cat-5/6

Optional

Cat-5/6

7