MTS WIFT Mini Transducer Interface - Manual (Page 64)

SWIFT ® Mini TI 64
Zero the Transducer Interface
Installation
Zero the Transducer Interface
For fixed mode
For the non-spinning (fixed) zero method, use the TI2Xfer to download the fixed
calibration file (serialnumberf.ca)l to the appropriate TI box. The angle mode in
the calibration file should be:
AngleMode=1
Rotate the transducer such that the orientation labeling is consistent with the
reference orientation. In most cases, this means rotating the transducer 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 the new value for the AngleFixed in
the TI calibration file (see earlier instructions
, “Edit the Calibration File,” on
page 48).
Zeroing the transducer in fixed mode can be performed before or after connecting
the adapter plate to the spindle housing.
• Perform zero before connecting the adapter plate to the spindle housing if
you want to zero the transducer without the effects of the vehicle load on the
transducer.
With the transducer oriented as described above press Zero on the TI
Box.Repeat for each transducer.
• Perform zero after connecting the adapter plate to the spindle housing if you
want to apply the vehicle load to the transducer before you zero the
transducer.
With installation complete and the vehicle load on the transducers, press the
Zero button on each TI Box.
For spinning mode
For the spinning zero method, use the TI2Xfer to download the spinning
calibration file (serialnumbers.cal) to the appropriate TI box. The angle mode in
the calibration file should be:
AngleMode=0
This zero method samples all eight input bridges at four 90° intervals (that is at
0°, 90°, 180°, and 270°). After the data is taken, all eight input channels are
analyzed for signal offsets, and the X and Z input channels are analyzed to
determine the angular zero point.
1. Rotate the adapter plate with the transducer attached one full revolution so
that the encoder passes the zero index mark.
This must be done with the TI powered on and the transducer cable
connected.
Note The encoder has a dot on the mounting flange connected to the slip-ring
bracket and another 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.