Keba KeContact M20, Quick Start Manual, Page: 106 / 294

M20 Connections and wiring
Brief instructions V1.01
106
© KEBA 2022
4 Connections and wiring
CAUTION!
Fire hazard from transient currents
The shield of the Ethernet interface is not galvanically isolated. If there are
connections to a device outside the building installation or to another
equipotential bonding system, there may be high transient currents. In this
case, use suitable optical transmission of the Ethernet interface.
4.1 Power supply
The KeContact M20 may only be supplied using the power adapter included
in the scope of delivery (in the control cabinet) using the DC-In jack.
The primary supply of the power adapter is the responsibility of the respec-
tive electrician (power connection line not included in the scope of delivery).
The power adapter is to be used in environments with contamination no
greater than contamination level 2 (as per EN 61010-1). All safety notes and
specifications of the power adapter manufacturer must be observed.
Information
Contamination level 2, description according to standard EN 61010-1:
Usually only non-conductive contamination appears; however, temporary
conductivity caused by condensation must be expected on occasion.
4.2 Mounting the antenna
CAUTION!
Danger to life from electromagnetic fields
To adhere to the limit values for people's exposure to electromagnetic fields,
it is necessary to mount the antenna at least 25 cm away from people.
Mounting the antenna directly on the device
To mount the antenna, proceed as follows:
1) Switch off devices connected to the KeContact M20 and disconnect their
power cables.
2) Tighten the antenna ( 2 ) at the antenna connection ( 1 ).