MTS SWIFT 30 Sensor - Manual (Page 133)

SWIFT 30 Sensors Troubleshooting 133
The data acquisition scales
are set incorrectly.
Check that the data acquisition scales are set
correctly. The full scale calibration range is
shown on the Calibration Report, with 10 V =
Full Scale (unless you requested custom
calibration output before calibration at MTS).
With the TI turned on and all cables from the
SWIFT transducer to TI connected, use a
handheld DVM to check the output on
individual channels while they are being loaded
to make sure that the output at the TI box and
data acquisition correlate. (Use the BNC
connectors located at the back panel of the TI.)
Output levels are much
higher or lower than
expected. (Continued) The transducer was zeroed
with load applied (or a
different load than the
intended tare weight for
non-spinning applications
only).
Rezero the TI, being careful not to touch or load
the transducer during the zeroing procedure.
A zero offset is present in
the data.
See Zero Offset on the previous pages of this
Troubleshooting Guide.
Shunt Calibration indicator
light blinks after shunt
calibration (Shunt
Calibration Failed) The shunt cables are not
connected, or are damaged,
or their connectors are not
secured.
Check that the shunt connectors were securely
installed during the shunt calibration procedure.
Verify that the cables are not nicked, cut, or
damaged, and that no connector pins are
damaged. Make sure that pins shown in the
cable drawings are securely positioned in the
connector.
The signal cable is not
connected to the SWIFT
transducer.
During a shunt calibration, the shunt cables
provide the shunt across the individual bridges,
but the outputs that are verified in the TI come
from the output signal cable. Check that the
output signal cable is not damaged and is
securely fastened to both the TI and the
transducer.
Troubleshooting Guide (part 6 of 12)
S YMPTOM P OSSIBLE C AUSES S OLUTION