Connections Using The Four-Wire Technique; Cable Extensions; Operation - HBM C16M Serie Montageanleitung

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CAUTION
Overloading in a single load cell can no longer be detected from the out­
put signal.
4.2 Connections using the four‐wire technique
With connections to amplifiers using the four‐wire technique the cores BU
(blue) and GN (green) should be connected together, as should BK (black)
and GR (grey). Please take in accound that this causes deviations to the sen­
sitivity and the temperature coefficient of sensitivity that this causes.

4.3 Cable extensions

Cable extensions must be screened and of low capacitance. We recommend
the use of HBM cables which satisfy these requirements. With cable exten­
sions it should be ensured that a proper connection is provided with low con­
tact resistances and good insulation.
When using the six‐wire technique, the effects of resistance changes in the
extension cable are compensated. If you extend the cable with the four-wire
technique, the sensitivity deviation can be rectified by adjustment. Tempera­
ture effects though are only compensated with the operation using the six-
wire technique.
The load cell connecting cable should be routed so that any condensed water
or dampness forming on the cable can drip off. lt must not be led to the load
cell. In addition, it must be ensured that no dampness can penetrate the open
end of the cable.
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Operation

• Transverse forces during operation, which do not act in the direction of the
guide arm, should be avoided.
• The play on the transverse guide arm should be checked regularly and ad­
justed if necessary.
• The play in the tank removal lock should be set to 2 mm.
• The weighing modules without tank removal lock should not be completely
relieved of the Ioad (the load transfer elements lift off).
HBM
C16M...
A1268-2.1 en/de/es