Connecting Clif-Cbuslc Via Rs485-1 To C-Bus - Honeywell Centra Line CLIF-CBUSLC Installation & Commissioning Instructions

Connecting CLIF-CBUSLC via RS485-1 to C-Bus

NOTE: Always power each CLIF-CBUSLC and the connected C-Bus devices via separate transformers.
NOTE: The max. C-Bus cable length is 1200 m (4000 ft).
NOTE: If any devices are not electrically isolated, signal ground connection is recommended. See section "RS485 Standard"
on pg. 11.
NOTE: If the CLIF-CBUSLC is connected at either of the line's two ends, an additional termination resistor (RT = 120 Ohm) is
necessary.
NOTE: Regardless of the position of the CLIF-CBUSLC along the C-Bus, the 3-position switch must be set to MID.
Example: CLIF-CBUSLC and Connected C-Bus Devices
NOTE!
R
T
120 OHM
24 25 26
GND-1
+5V
ISO
47 kOHM
RS485-1 (+) RS485-1 (-)
CLIF-CBUSLC
= C-BUS DEVICE #1
1 2
F1
24 V
230 V
Fig. 22. Connection of a CLIF-CBUSLC via its RS485-1 interface to a C-Bus
CLIF-CBUSLC INTERFACE – INSTALLATION & COMMISSIONING INSTRUCTIONS
RS485-1
C-BUS
GND-1
DEVICE #2
47 kOHM
MID
NOTE!
L
C-BUS
DEVICE #3 DEVICE #N-1
19
C-BUS C-BUS
DEVICE #N
EN1Z-1026GE51 R0417