Cleveland Motion Controls ULTRA ISC SERIES SLIM CELL TRANSDUCER REV AA - Manual (Page 9)

MAN-70434-0 R EV AA U LTRA ISC S ERIES S LIM C ELL T RANSDUCER
1 P RODUCT O VERVIEW
1.1 G ENERAL D ESCRIPTION
The Ultra Series Integrated Signal Conditioning (ISC) 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) amplifier 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.
Because the output stage is free to float, be aware of voltage differences on the output
side of the tension transducer with respect to protective earth ground.
Figure 1 Ultra Series Integrated Signal Conditioning (ISC) Tension Transducer
The Integrated Signal Conditioning (ISC) tension transducer 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) tension transducer 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 limited voltage gradients between input and output sections of the
application wiring.
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