Electrical Connection; Connection With Six-Wire Configuration; Connection With Four-Wire Configuration - HBM PW15PH serie Montageanleitung

PW15PH...
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Electrical connection

The following can be connected for measurement signal conditioning:
 Carrier‐frequency amplifier
 DC amplifier
designed for strain gauge measurement systems.
The load cells are supplied in the standard version with an 8‐pin plug in a
six‐wire configuration. The load cells are optionally available with a hygienic
design connection cable or with different cable lengths.
4.1 Connection with six
2
3
4
5
Fig. 4.1: Connector pin assignment
With this connector pin assignment, the output voltage at the measuring amp­
lifier is positive when the transducer is loaded (see Fig. 3.1). The connection
assignment for the cables available as accessories can be found in Section 7
on page 16.
4.2 Connection with four
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 supply leads: Identification (+) with (+) and identi­
fication (-) with (-), 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.
A3392-1.0 en/de/fr
wire configuration
‐
8
Plug
1
Plug
Plug
7
Plug
Plug
Plug
6
Plug
Plug
wire configuration
‐
‐
in contact 1 = Measurement signal (+)
‐
in contact 2 = vacant
‐
in contact 3 = Sense lead (+)
‐
in contact 4 = vacant
‐
in contact 5 = Sense lead (-)
‐
in contact 6 = Excitation voltage (-)
‐
in contact 7 = Excitation voltage (+)
‐
in contact 8 = Measurement signal (-)
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HBM