Connecting The Knx Bus - Siemens LOGO! CMK2000 Operating Instructions Manual

NOTICE
Do not violate the minimum bending radius limit of the Ethernet cable, otherwise this will
result in attenuation of the shielding effect. Furthermore there is a danger that the cable
shield will break.
Note
We recommend using RJ45 connectors from the Siemens FastConnect system as the plug-
in connectors for the Ethernet cabling.
6.5

Connecting the KNX bus

The CMK2000 is connected to the KNX bus using the red/black KNX terminal.
Note
• Only the red-black core pair is used; the white-yellow core pair is not connected.
• Do not connect the shield of the KNX cable.
NOTICE
Do not use electrically conductive objects such as screwdrivers to lever out the KNX
terminal. Otherwise there is a danger that the two KNX pins may short-circuit and thus
destroy the KNX bus.
CMK2000
Operating Instructions, 11/2015, A5E34877550B/001
①
Red terminal (+), red cable
②
Black terminal (-), black cable
Recommended bus cables:
YCYM (2 x 2 x 0.8 mm
•
J-Y(ST)Y (2 x 2 x 0.8 mm
•
JH(St)H (2 x 2 x 0.8 mm
•
A-2Y(L)2Y or A-2YF(L)2Y
•
Stripping length: 5 mm
6.5 Connecting the KNX bus
)
2
)
2
)
2
Connection
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