Electrical Connection; Connection With A Six-Wire Configuration; Connection With A Four-Wire Configuration - HBM PW29 Série Notice De Montage

PW29
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Electrical connection

The following can be connected for measurement signal conditioning:
w Carrier‐frequency amplifier
w DC amplifier
designed for strain gage measurement systems.
In the standard version, the transducers come supplied with a 3 m cable with
a 6‐pin Pancon plug in a six‐wire configuration.
4.1 Connection with a six‐wire configuration
Schematic diagram of a Pancon plug (CE100F26‐6), 6‐pin
Fig. 4.1: Connection with a 6‐wire cable (choice of 3 m or 6 m lengths)
With this cable assignment, the output voltage at the amplifier is positive when
the transducer is loaded (see Fig.3.1).
4.2 Connection with a four‐wire configuration
When transducers with a six‐wire configuration are connected to amplifiers
with a four‐wire configuration, the sense leads of the transducer must be con-
nected to the corresponding excitation voltage leads: (+) with (+) marking and
(-) with (-) marking, see Fig. 4.1. This measure also reduces the cable resist-
ance of the excitation voltage leads. However, there will be a voltage loss on
the supply leads due to the cable resistance that is still present and not com-
pensated for by the six‐wire configuration. A large part of this loss can be
eliminated by a calibration, however, the temperature‐dependent part remains.
The TK value given in the specifications for the transducer therefore does not
c
apply for the cable and transducer combination when connection is with a
four‐wire configuration; the cable percentage must be added.
A3313-1.0 en/de/fr
Shield (yellow) = cable shield
connected to load cell body
Plug‐in contact 1 (white) = measurement signal (+)
Plug‐in contact 2 (red) = measurement signal (-)
Plug‐in contact 3 (black) = excitation voltage (-)
Plug‐in contact 4 (blue) = excitation voltage (+)
Plug‐in contact 5 (green) = sense lead (+)
Plug‐in contact 6 (gray) = sense lead (-)
blue marking
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HBM