Chapter 3
Connections
The APG20MK2 allows the connection of two matching input modules and one or more
digital control panels. To guarantee a proper functioning of the system, it is important
that the connection requirements and limitations are always carefully followed.
The required cabling specification is CAT5E (or better) UTP twisted pair cabling. In
situations containing high levels of electromagnetic interference, shielded cable can
improve the performance of the system.
IMPORTANT
Always make sure the devices are powered off when connecting or disconnecting any
of the inputs on the APG20MK2.
The maximum cable length is depending of the number connected input modules on
the bus cabling (depending of the voltage drop on the bus cabling). When only one input
unit is connected, distances up to 300 meters can be achieved. When two input units
are connected, the maximum cable distance is limited to 150 meters.
In case distances higher than 300 meters (or 150 meters with two input modules) are
required, an additional junction box (ARJ03P) with power supply has to be applied to
the system, allowing a total distance of up to 600 meters.
The example diagrams shown on the following page are indicating some connection
diagrams for typical application setups, including their cable length limitations.
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