Rockwell Automation 1440-TPS02-01RB XM-320 Position Module - Manual (Page 56)

Publication GMSI10-UM005C-EN-P - May 2010
48 Configuration Parameters
Calibration Bias Sets the zero or green position. The zero position is
the normal operating position. Setting the zero
position compensates for the static gap. This allows
the module to display only the displacement around
the zero position.
Use one of the formulas below to calculate the
Calibration Bias. The formula that you use depends
on the Upscale setting and whether Fault High and
Fault Low are both less than or equal to zero (0).
Upscale set to “Towards” Formula
Calibration bias = Transducer DC Bias +
(Sensitivity x Calibration Offset) x sin (Target
Angle)
Upscale set to “Away” Formula
Calibration Bias = Transducer DC Bias -
(Sensitivity x Calibration Offset) x sin (Target
Angle)
If Fault High and Fault Low are both less than or
equal to 0, use one of these formulas:
Upscale set to “Towards” Formula
Calibration bias = Transducer DC Bias -
(Sensitivity x Calibration Offset) x sin (Target
Angle)
Upscale set to “Away” Formula
Calibration Bias = Transducer DC Bias +
(Sensitivity x Calibration Offset) x sin (Target
Angle)
Volts
Note: Check with the manufacturer
about operating thrust position and
acceptable tolerances before making
any adjustments.
Calculate Bias (XM Serial
Configuration Utility only) Automatically calculates the Calibration Bias
value.
Channel Parameters
Parameter Name Description Values/Comments