MTS SWIFT 30 Sensor - Manual (Page 104)

SWIFT 30 Sensors 104
Road Simulator
Installing the Transducer
Zeroing the Transducer Interface
Non-spinning method
For the non-spinning zero method, the calibration file should be configured:
ZeroAlgorithm=0
AngleMode=1
These settings are maintained over power cycles, so once a system mode is set
up, there is no need to re-enter them.
This system zero method samples all eight input bridges at the time the zero
buttons are pressed.
1. Press the Bridge Zero button.
When the Bridge Zero button is pressed, the Zero indicator lights, and the
TI starts to zero out the input bridges.
2. The Bridge Zero indicator starts blinking (at about 4 Hz rate).
The input bridges are zeroed by adjusting the internal bridge zero DAC,
until the measured bridge signal is as close to zero as possible. This is
performed for all eight bridges, and the results are saved in non-volatile
RAM. These values are then restored for subsequent power-ups. This zero
method will zero out any existing offsets seen at the inputs to the TI.
3. The Zero indicator turns off when a successful zero process is finished.
At this point, the new bridge and angle zeroes are loaded into the transducer.
Note The transducer should be installed in such a position that the orientation
labeling is consistent with the reference orientation. In most cases, this
means installing it so the labels are upright. If an additional angle
correction is required after installation, you will need to measure the
angle from zero, and then enter a new offset value for the AngleFixed in
the TI calibration file (see earlier instructions in
, “Edit the Calibration
File,” on page 66).