MTS SWIFT 20 Ultra Sensor - Manual (Page 136)

SWIFT 20 Sensors 136 Troubleshooting
The gains have been
changed in the calibration
file. As the bridges are shunted, the eight raw bridge
outputs pass through the TI box and have the
calibration gains applied to them. If the
calibration file has been changed or modified,
the six bridge 10 V outputs will reflect this. Use
the TIXFER utility to verify that the calibration
settings portion of the calibration file matches
the original, and download the original to TI if
needed.
Data acquisition
configuration, settings,
offset, or scaling is
incorrect, changed, or
inconsistent Investigate the data acquisition system to verify
that it is configured properly.
The output signal polarity
is incorrect The OutputPolarities
setting is incorrect The TI electronics can be set to change the
polarities of the outputs. The polarity of the
loads as noted on the cover labeling will be with
the TI electronics calibration file
OutputPolarities = 40.
You can change these output polarity as noted in
the section “Edit the Calibration File” in
“Setting up the Transducer Interface.”
Reference Angle is 180° off. If the reference angle is 180° off, the output
polarity of some channels may appear to be
reversed. The reference angle can be verified as
described later in this table.
Reference Angle is
incorrect Spinning Zero was incorrect Zero Procedure Error: For spinning applications
with auto-zero for both bridge zero and angle
zero (ZeroAngle=3, AngleMode=0): Verify
that the zeroing procedure was done correctly as
noted in this manual, with no load or contact on
the tire other than the weight of the tire, and that
all contact was on the inner diameter only.
Spinning Zero was done
with anti-rotate device not
attached, or attached with
orientation different than
test set-up. Make sure that the anti-rotate and slip ring
assembly are securely fastened during the
spinning zero procedure. If the anti-rotate or slip
ring is removed or rotated from the transducer,
rezeroing the transducer angle is required.
Troubleshooting Guide (part 10 of 14)
Symptom Possible Causes Solution