HBM S9M, Инструкция по монтажу, Страница: 18 / 72

S9M
18
A3019-5.0 en/de/fr HBM
6 Electrical connection
The following can be connected for measurement signal conditioning:
S
Carrier-frequency amplifier
S
DC amplifier
designed for strain gage measurement systems.
The S9M force transducer is delivered with six-wire circuitry.
6.1 Connection with six-wire circuitry
When transducers designed with a six-wire configuration are connected to
amplifiers with a four-wire configuration, the sense leads of the transducer
must be connected to the corresponding supply leads: Identification (+) with
(+) and identification (-) with (-).
(white)
(black)
(gray)
Excitation voltage (
)
)
(green)
(red)
(-)
Excitation voltage (
*
)
Sense (
*
)
Measurement signal (
)
)
(blue)
Sense (
)
)
Measurement signal (
*
)
Shielding/drain wire, connected to enclosure ground
Fig. 6.1 Pin assignment of S9M in six-wire circuit
With this cable assignment, the output voltage at the measuring amplifier is
positive in the pressure direction when the transducer is loaded.
The transducers are delivered with a 7.6m cable with free ends as standard.
The connection cable shielding is connected to the transducer housing. The
transducers with free cable ends must be fitted with CE norm connectors and
the shielding connected extensively. With other connection techniques, an
EMC-proof screen should be applied in the wire area and this screen should
also be connected extensively (see also HBM Greenline Information, brochure
i1577).
6.2 Shortening the cable
As the transducer connection uses a six-wire configuration, you can shorten
the 6-wire transducer cable without affecting the measurement accuracy.