Electrical Connection; Connection In A Six-Wire Configuration; Connection In A Four-Wire Configuration - HBM RSCC Notice De Montage

14
6

Electrical connection

The following can be connected for measurement signal conditioning:
 Carrier‐frequency amplifiers
 DC amplifiers
designed for strain gauge measurement systems.
The RSCC load cell is delivered with a six‐wire configuration.
6.1 Connection in a six‐wire configuration
Fig. 6.1: RSCC pin assignment in a six‐wire circuit
With this cable assignment, the output voltage at the measuring amplifier is
positive in the tensile direction when the load cell is loaded.
The transducers are delivered with a 7.6 m cable with free ends as standard.
The transducer cable can be shortened as required if the transducer is
connected to an amplifier with a six‐wire configuration. RSCC type load cells
are also optionally available with 12 m and 20 m cable lengths.
The connection cable shielding is connected to the transducer housing.
Transducers with free cable ends must be fitted with connectors complying
with EMC guidelines. The shielding must be connected extensively. With other
connection techniques, an EMC‐proof shield should be applied in the wire
area and this shielding should also be connected extensively (also see HBM
Greenline Information, brochure i1577).
6.2 Connection in a four‐wire configuration
When load cells with a six‐wire configuration are connected to amplifiers with
a four‐wire configuration, the sense leads of the load cells must be connected
to the relevant excitation voltage leads: (+) with (+) marking and (-) with (-)
marking, see Fig. 6.1. This measure also reduces the cable resistance of the
excitation voltage leads However, there will be a voltage loss on the supply
HBM
(gray) Sense lead (*)
(black) Excitation voltage (*)
(white) Measurement signal ())
(blue) Excitation voltage ())
(green) Sense lead ())
(red) Measurement signal (*)
(-) Shielding/drain wire, connected to enclosure ground
RSCC
A3018-3.2 en/de/fr