CLIF-CBUSLC INTERFACE – INSTALLATION & COMMISSIONING INSTRUCTIONS
EN1Z-1026GE51 R0417 18
C-BUS CONNECTION
The CLIF-CBUSLC features an RS485 interfaces to which C-Bus devices can be connected: RS485-1 (consisting of push-in
terminals 24 [GND-1], 25, and 26).
C-Bus Topologies
Via the C-Bus, up to 30 C-Bus devices (e.g., controllers, etc.) can communicate with one another and a PC central. The C-Bus
must be connected via the individual controllers (open ring).
NOTE: Star connection is not allowed, as this might cause uncontrollable line reflections.
Instead of CLIF-CBUSLC Interfaces, C-Bus controllers (e.g., the Excel 500, Excel 100, LION, PANTHER) can also be
connected.
CLIF-
CBUSLC
Excel 100 Excel 500
PANTHER
Fig. 21. C-Bus topology Excel 5000
C-Bus Cables
NOTE: Observe national regulations for C-Bus cables!
For Europe; only shielded cable is permitted.
For the U.S., shielded or unshielded cable can be used.
Cable type Description Recommended for
J-Y-(ST)Y 2 x 2 x 0.8 shielded, twisted pair Europe, inside cabinet
A-Y-(ST)Y 2 x 2 x 0.8 shielded, twisted pair Europe, outside cabinet
AK 3702 unshielded, twisted pair US not approved for Europe
AK 3740A shielded US (low-cost) not approved for Europe
Belden 9842 twisted pair Europe, US also possible
Belden 9841 shielded US
AK 3702 unshielded, twisted pair US not approved for Europe
AK 3740A shielded US (low-cost) not approved for Europe
Table 13. C-Bus cable types
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