MTS SWIFT 40 Sensor - Manual (Page 68)

SWIFT 40 Sensors 68
Edit the Calibration File
Setting up the Transducer Interface
C. The AngleOffset value is used when you are operating in encoder
mode (spinning applications). This value is summed with the encoder
output count, and used to address the sine and cosine RAM when the
angle mode is set to 0 (encoder). Negative angles are converted to their
positive equivalent so that the readback value range is 0–360°.
The AngleOffset value is calculated by the TI during the zero process.
At the end of the process it is written to the calibration file.
There is no need to change this calculated value.
D. Edit the value for EncoderSize depending on the SWIFT Sensor being
used.
EncoderSize=0 (Telemetry compatible sensor)
EncoderSize=1 (Slip ring sensor–not Telemetry compatible)
4. Perform this step for non-spinning applications. For spinning applications,
skip to Step 5.
A. Edit the value for ZeroAlgorithm.
The zero algorithm value that you specify will affect the operation of
the Angle Zero and Bridge Zero switches.
Set ZeroAlgorithm=0
B. Edit the value for AngleMode.
Set the AngleMode=1
In this mode, the sine and cosine RAM address is fixed. The encoder is
not used, nor is the encoder offset.
C. Edit the value for AngleFixed.
The AngleFixed value is used for non-spinning applications. This
value addresses the sine and cosine RAM when the angle mode is set to
1 (fixed). Negative angles are converted to their positive equivalent so
that the readback value range is 0–360°.
You may set the fixed angle value when you are operating in fixed
angle mode (non-spinning applications) only if the transducer is rotated
from its correct Fz–Fx orientation on the road simulator. For
installations where the Fz-Fx orientation on the SWIFT cover(s) is
aligned with gravity. The correct setting is:
AngleFixed=0
If the SWIFT is installed at an angle to the desired Fz–Fx output axis,
set the AngleFixed value equal to the installed angle offset in degrees,
with clockwise rotation positive.
For example: AngleFixed = 45.
5. Save the changes and exit the editor.