General Information On Video-Bus; Installation - sks Basic Line 2012 Handbuch

1. General Information on 2-Wire Video-Bus
Loop resistance from distributor to telephone inside station may only be a maximum of 8Ω. From
distribution to door station loop resistance may not exceed 6Ω.
The maximum distance between door station and last indoor station may not exceed 200 m.
BUS Voltage has to be between 22... 25V.
Twisted pair wire is to be used for Bus lines and also for all other shown functions. The
recommended wire is: JY (St) Y in 0.8 mm. If required the shield is to be statically grounded.
Up to three stations may be configured using one identical address (parallel operation).
In case of radial layout of wiring or if long distances have to be covered hubs are required.
Using additional switch modules it is, for example, possible to actuate light sensors, automatic door
openers or other functions.
For the installation it is mandatory to adhere to the VDE 0100 und VDE 0800 guidelines.
(Germany)

2. Installation

Hazard of electrical strike and burns to persons, as well as damage of equipment and malfunctions.
Observe VDE 0100 and VDE 0800 guidelines during installation. (Germany)
Countermeasures:
Before beginning any work, deactivate and disconnect all energized electrical wires.
Secure the switched off/ disconnected lines against erreneous reconnection.
Use a measuring device to make sure that the wires are deenergized.
Cover up any adjacent, energized or conducting components.
All work and all electrical connections must comply with the national provisions for the country in
question and must be performed by appropriately trained personnel.
DIN VDE 0100 must be observed and complied with in devices with a 230V connection
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