Cumberland 074-11772, Owner'S Manual

Page: 30 / 102

Chapter 3: Basic connections
IMPORTANT: The communication network must be installed in a daisy chain topology. Consult the
wiring diagrams to see the maximum cable distance according to the wire gauge.
IMPORTANT: The recommended installation wire gauge is 18 AWG (diameter of 1.02mm or cross
sectional area of 0.82mm 2 ) when using communication wires at a length of 4000 feet
(1200 meters). The cable must be twisted pair and shielded.
WARNING
Installation must only be performed by qualified service personnel.
NOTICE
When tightening small terminal blocks, use a torque between 4.43lbf*in
(0.5N*m) and 5.2lbf*in (0.6 N*m) to fasten a wire gauge from 16AWG (diameter of
1.29mm or cross sectional area of 1.30mm
2 ) to 18AWG (diameter of 1.02mm or
cross sectional area of 0.82mm 2 ).
The communication network must be installed in a daisy chain topology. The order of the wires is
very important. At both ends of network, the End-of-Line must be activated. If the wiring can’t be
done in a single chain, you might need to deactivate the end-of-line (EOL) resistor to improve com-
munication. AP/Cumberland does not warranty the proper operation if the topology network is not
daisy chain.
Figure 3-1 Daisy Chain Topology
Connecting a loadcell
There is a possibility to connect up to 8 loadcells with to EDGE Bin Scale 3 Wires LC . A 5V voltage refer-
ence of 200mA maximum is available for all outputs SIG+ (LC(x) - SIG+). The outputs LC(x) – SIG+ are
the excitation voltage for the loadcell. The signal SIG- is the feedback of the loadcell.
NOTE: A minimum wire gage of 24 AWG (diameter of 0.51mm or cross sectional area of 0.20mm 2 ) is
required for a proper operating. The maximum cable length allowed (including cable extensions)
is 50ft. (15m). The cable must be twisted and shielded.
30 891–00577 EDGE Bin Scale 3 Wires LC