MTS SWIFT 40 Sensor - Manual (Page 63)

Select a Zero Method
SWIFT 40 Sensors Setting up the Transducer Interface 63
3 Use this algorithm
if you do not need
to mechanically
level the SWIFT
sensor
The transducer is
unloaded during
the zero process.
(AngleMode=0)
Both the Angle Zero and Bridge Zero buttons are functional. This
algorithm will perform both angle zero and bridge zero processes.
In the Bridge Zero process,
the TI will average the data
and remove the DC offset by
setting the zero DACs to the
average value. In the Angle Zero process, the TI
will collect one revolution of raw
bridge data, perform a peak/valley
analysis via sine curve fit for X1, X2,
Z1, Z2, and determine the angle that
will result in positive Z facing
upward.
This process assumes that the wheel
is hanging, so that the peak vehicle Z
axis is read 180° out of phase
(transducer peaks are the weight of
the wheel, in a downward direction).
The angle determined is then shifted
by 180°.
4 This is the
recommended
algorithm for
spinning
applications.
You will need to
mechanically level
the SWIFT sensor
The transducer is
unloaded during
the zero process.
(AngleMode=0)
Both the Angle Zero and Bridge Zero buttons are functional. This
algorithm will perform both angle zero and bridge zero processes.
The Bridge Zero button is pressed when the Z beam is facing up.
The Angle Zero button is pressed after the sensor is rotated 90° in
either the plus or minus direction.
Using the data collected from these two positions, all bridge zeros and
angle zeros are computed.
Zero Algorithm Values Defined (part 2 of 2)
Z ERO A LGORITHM W HEN TO U SE B RIDGE Z ERO A NGLE Z ERO