User Manual

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Siem ens HRC3.2 – Room controller CM2N6314en
Building Technologies 2016-12-23
· KNX standard cable with 2 twisted pairs for connection of the KNX gateway to all
room controllers (includes 2 spare wires)
· KNX standards must be observed
· No bus termination resistances are required.
As a maximum, the following room devices can be connected to the room controller via
the room bus (as long as the total current does not exceed 300 mA):
- 4 room operator units
- 4 card readers
- 4 card holders
Cables: 2 twisted pairs, max. 0.5mm
2
, screened.
Recommendation: There is normally no need to earth the cable screen.
If the bus cable is routed parallel to mains cables over long distances, we recommend
that the bus cable should be connected, at a point near the room controller, to the
protective earth conductor.
STOP
Caution
Adequate EMC precautions must be taken when installing the equipment.
The room bus and building bus conductors must not be routed in the same
conduit as high voltage conductors.
Commissioning
· Before commissioning, the room controller address (KNX address) must be set,
either from a laptop computer or from an operator unit (external operator/monitoring
unit) connected to service socket J1.
· The controller must be connected to the supply voltage for this purpose.
· In the case of customer-specific applications, the customized application software
must be downloaded either from a laptop connected to service socket J1 or via the
building bus.
· The application can be downloaded to individual room controllers while the bus is in
normal operation.
· The room controllers are already loaded with the standard application on delivery.
It is then only necessary to adjust the parameters with the commissioning software.
KNX building bus
(Terminal block X3)
Wiring
RS485 room bus
(Terminal block X3)
Wiring