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Connecting
5.3 Connecting up
Load cell
SIWAREX WL280
RN-S SA
SIWAREX WL290
DB-S CA
Procedure
Note
Measurement errors
Observe the warnings concerning extending or shortening the connecting cables in section
→ Lengthening and shortening the connecting cable (Page 35).
If at all possible, do not shorten the connecting cables in a four-wire system.
Note
No calibration approval
In scales requiring official calibration, the connecting cables for load cells in a four-wire system
must not be shortened or lengthened.
1. Connect the recommended grounding cables: → Planning (Page 31)
2. Connect the load cells in accordance with the connection principle and with reference to the
specified signal assignments: → Connecting principle (Page 26)
3. For load cells with a four-wire system, position the wire jumpers in the junction box as
follows:
Table 5-2
Wire jumper
1
2
Note
Malfunction
If the wire jumpers are missing, the SIWAREX weighing module signals a wire break.
30
EXC+
EXC-
Pink
Gray
Red
Black
Wire jumpers for load cells with four-wire system
Function/color of connecting cable
SIG+
SIG-
Brown
White
Green
White
From terminal
EXC-
EXC+
Operating Instructions, 07/2024, A5E02199611B-14
Sense+
Sense-
n.a.
n.a.
n.a.
n.a.
To terminal
SENSE-
SENSE+
SIWAREX WL200
Shield not
connected
to the load
cell body
Trans‐
parent
Trans‐
parent
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