7
Wiring Information
Cables and Wiring
Excellent locations to run cables include:
• Roof
space
•
False ceilings/ bulkhead area
•
Through and/or around external walls
• Under
fl oors (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.
MAXIMUM CABLE LENGTH TO ROOM STATIONS
NUMBER OF STATIONS ALLOWED
100 yards
1 Room Station
50 yards
2 Room Stations
33 yards
3 Room Stations
25 yards
4 Room Stations
Cable Type and Confi guration
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 confi gured 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 DOOR STATIONS
NUMBER OF STATIONS ALLOWED
80 yards
1 Door Station
MASTER STATION CONNECTION
VIDEO DOOR STATION
NON-VIDEO DOOR STATION
ROOM STATION
WIRING
POS
Green White
Green White
Green White
Cat-5/6
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
Optional Video Signal
Brown White
Cat-5/6
Optional Video Ground
Brown
