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Installation and start-up
Actuators KNX R4 16 A and KNX R8 16 A
• Version: 28.05.2020 • Technical changes and errors excepted.
Follow the guidelines and standards for SELV electric circuits
while installing and cable laying of the KNX connection and
inputs!
The physical address is assigned by the KNX software. There is a button with a control
LED for this on the actuator.
2.3.1. Insulation properties of the clamp groups
The
Actuators KNX R4 16 A and KNX R8 16 A
are assigned to Overvoltage cate-
gory III and Pollution degree 2 or 3 according to EN60664-1. According to this classifi-
cation,
between 250 V power cables and FELV 4 kV surge voltage resistance and
between 250 V power cables and SELV 6 kV surge voltage resistance
must be provided. This provision must be observed during the installation.
With single insulation,
at pollution degree 2 a voltage of 400 V AC and
at pollution degree 3 a voltage of 250 V AC
is allowed between two channels.
KNX R4 16 A:
Neighbouring clamp groups may not be used with mixed
voltages, as there is only single insulation between them.
Non-labelled clamps (X) may not be used, to avoid influencing the insulation proper-
ties!
Fig. 3 KNX R4 16 A Insulation properties of the clamp groups
Insulation 4 kV (single insulation)
