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MTS SWIFT 10 MC Sensor User Manual

Page 108

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SWIFT 10 MC Sensors

108

Troubleshooting

The shunt reference values

were changed.

Use the TI2XFER program to upload the

current calibration file. Check the file to verify

that the variables ShuntDeltaRef are the same
as shown on the original calibration file

provided by MTS. The eight ShuntDeltaMeas

values should read approximately 0.85 V.

The shunt tolerance is not

set correctly.

Use the TI2XFER program to upload the

current calibration file. The ShuntTolerance

value should be set at 2, indicating an allowable
shunt variation of 2%. If this value is changed to

zero or a very small number, the difference

between the reference and the current shunt
measurement may fall outside of this tolerance

and be read as a shunt failure.

Transducer cable problems.

If the ShuntDeltaMeas values are not the same
as (or within tolerance of the ShuntDeltaRef

values), note which shunt values are not the

same.

If all values are not correct, check the signal

cable and power supply connections to ensure
the cables are undamaged and fastened securely.

Shunt mapping may be

incorrect that is, the wrong
calibration file is loaded in

the TI box or the shunt

mapping information in the
loaded file was changes

Use the TI2XFER program to upload the

current calibration file. Check the file to verify
that the variables Shunt#Bridge= are the same

as shown on the original calibration file

provided by MTS.

Shunt Calibration as
Recorded by External Data
Acquisition is incorrect or
inconsistent. (The internal
shunt check in the TI
electronics verifies each of
the eight individual
bridges, but it is the six
bridge 10 V output that you
can record if desired.)

The gains have been

changed in the calibration
file.

As the bridges are shunted, the 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 bridge 10 V outputs will reflect this. Use the

TI2XFER 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 Polarity setting for one

or more axes is incorrect

Check the polarity for each axis in the

calibration file and compare it with the desired

configuration as described in the

, “Edit the

Calibration File,”

on page 53

Troubleshooting Guide (part 7 of 10)

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