MTS SWIFT 40 Sensor User Manual
Page 88
SWIFT 40 Sensors
88
Test Track Vehicle
Installing the Transducer
5. Verify that the calibration file is set up correctly for your testing application.
A.
Download the spinning calibration file (xxxxxs.cal) to the computer
from the MTS Disk that corresponds to the serial number of the
transducer that you are setting up.
B.
If necessary, modify the zero algorithm and angle mode to fit the
application/use requirements as described in
C.
The EncoderSize parameter should be omitted or set to EncoderSize=1
D.
Download the calibration file to the TI box.
Note
If it becomes necessary to change the zero algorithm or angle mode
after downloading the file to the TI, you can do so by using the
TISETZERO utility, as described in
, “TISETZERO – Transducer Interface
6. Put the vehicle on a lift or jack up the corner of the vehicle on which the
SWIFT sensor is mounted.
Important
Place wheel chocks under the wheels on the ground or otherwise
restrain the vehicle to prevent it from moving.
7. Push the Bridge Zero button. Only the Bridge Zero indicator will light.
8. Gently spin by hand, the wheel on the opposite side of the vehicle for two
revolutions. Be careful not to allow the wheel to stop or reverse direction.
This will cause the wheel you are zeroing to spin without load.
Note
For rear wheels or wheels where this cannot be done, carefully spin the
wheel to be zeroed by gently contacting only the hub adapter bolted to
the SWIFT sensor.
9. Stop spinning the wheel when the Bridge Zero indicator begins to blink at a
rate of 4 Hz and continues blinking for about one minute.
The Bridge Zero indicator will then turn off, indicating completion of the
Bridge Zero procedure.
10. Perform the Angle Zero procedure.
Use a digital inclinometer to zero the angle on the transducer, then rotate the
tire to zero the strain gage bridges.
A.
Rotate the tire one full revolution so that the encoder will pass the zero
index mark at least once.
Note
The encoder has a red dot on the mounting flange connected to the slip-
ring bracket and a black dot on the slip-ring connector housing where it
interfaces with the mounting flange. These dots, when aligned next to
each other, indicate the index mark is under the encoder sensor.