MTS Series 793 - Manual (Page 206)

About Feedback Signal Offset
The Auto Offset control in the Station Manager application zeros the output of the conditioner without shifting
the electrical zero reference of the conditioner. An auto offset can be applied to the current control feedback
with station pressure applied.
For example, suppose your LVDT output is 1 cm when the actuator is at its null, midstroke position. You can
compensate for this positive LVDT output by offsetting the feedback signal –1 cm. The actual displacement
value (Current Value) is now zero.
Usable range
Because the range centers around the calibrated electrical zero of the sensor, an offset limits the usable
range in the direction you shift it. For example, in a ±2 cm range, offsetting the signal -1 cm from its zero
position results in control ranges of +1 cm on the positive side and –3 cm on the negative side.
Item Callout
Sensor Voltage 1
Conditioner 2
Gain 3
Electrical Zero 4
Electrical zero is only available on certain types of conditioners.
Conditioner Voltage 5
Controller/Application 6
Digital Signal 7
Offset 8
206 MTS Series 793 Control Software
Station Setup