Cleveland Motion Controls ULTRA ISC CANTILEVER TRANSDUCER CLTSCM REV AA - Manual (Page 9)

MAN-70445-0 R EV AA U LTRA S ERIES ISC C ANTILEVER T RANSDUCER T ECHNICAL M ANUAL
1 P RODUCT O VERVIEW
1.1 G ENERAL D ESCRIPTION
The Ultra Series Integrated Signal Conditioning (ISC) Cantilever tension transducer (see Figure 1) outputs
a +/- 10 VDC signal for reporting signals from strain gage-based load cells. Ultra ISC transducers include
an Integrated Signal Conditioner (ISC) that is coupled directly to the “Ultra” type load cell employing
semiconductor strain gages. This local processing reduces the signal degradation due to long wires to the
driving displays or recording devices. Note: Customer must supply Roll shaft and bearings.
Because the output stage is free to float, voltage differences on the output side of the
tension transducer with respect to protective earth ground.
Figure 1 Ultra Series Integrated Signal Conditioning (ISC) Cantilever Transducer
The Integrated Signal Conditioning (ISC) amplifier has a separate ground reference (common) for the output
signals. The ground used by the output circuits is electrically separate from the ground return for the fixed
24Vdc supply. The 24Vdc supply input is protected against reverse polarity.
The Integrated Signal Conditioning (ISC) Amplifier uses an embedded Instrumentation Amplifier (IA) to
amplify the millivolt level signals generated by the strain gage bridge, while effectively rejecting common-
mode noise. Low drift Surface Mount Technology (SMT) components, Multi-layer Printed Circuit Boards
(PCB) and optimum circuit topologies are incorporated to promote load cell signal integrity.
The Amplifier gain is adjustable over a 9.6:1 range to allow span calibration of the analog outputs.
A precision low voltage excitation source is provided for exciting the strain gage elements in the internal
strain-gage bridge.
The use of galvanic isolation can aid in reducing noise pickup caused by ground loops in the field wiring and
accommodates only limited voltage gradients between input and output sections of the application wiring.
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