Unipulse DeviceNet F381A, Operation Manual

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149
9 SUPPLEMENTS
149
SUPPLEMENTS
Chapter
9
■
Displacement errors
Error Description
The sensor input signal in performing zero calibration is outside the zero calibration
range.
Check that unwanted force is not applied to the sensor and that there is no break in the
cables and there is no mistake in wiring, and then perform zero calibration again.
[During actual load calibration]
The sensor input signal is outside the actual load calibration range. Or, the same value
as the zero calibration value is input.
Check that load in the actual load calibration range is applied to the sensor and that
there is no break in the cables and there is no mistake in wiring, and then perform
calibration again.
[During equivalent input calibration]
The values input to the rated output and display value are outside the equivalent input
calibration range. Or, "0" is input.
Check that they are not different from the data sheet of the sensor, and then perform
calibration again.
[In the case of standard, line driver spec]
The sensor output pulse count is beyond the F381A internal count range.
Set so that the sensor output pulse count will not go beyond the internal count range.
Also, input the DPM Positioning signal at an appropriate time because inputting the
DPM Positioning signal clears the internal count to zero.
[In the case of voltage input spec]
The sensor input signal is beyond the signal input range.
Set so that the sensor output signal falls within the signal input range.
If the setting is such that the signal falls within the signal input range and the error
cannot still be removed, break(s) in the cables, mistake(s) in wiring, or sensor failure is
considered.
[In the case of standard, line driver spec]
The sensor output pulse count is below the F381A internal count range.
Set so that the sensor output pulse count will not drop below the internal count range.
Also, input the DPM Positioning signal at an appropriate time because inputting the
DPM Positioning signal clears the internal count to zero.
[In the case of voltage input spec]
The sensor input signal is below the signal input range.
Set so that the sensor output signal falls within the signal input range.
If the setting is such that the signal falls within the signal input range and the error
cannot still be removed, break(s) in the cables, mistake(s) in wiring, or sensor failure is
considered.
A signal equivalent to a display value 32000 is input.
It is considered that the displacement is moving beyond the maximum expected
displacement. Perform calibration by setting so that the maximum value of
measurement will not go 32000.
A signal equivalent to a display value below -9999 is input.
It is considered that the displacement is moving below the displacement expected in the
reverse direction.
Perform calibration by setting so that the minimum value of measurement will not drop
below -9999.
The displacement pace is too fast to perform sampling in time, and 10 or more
measurement points of data are skipped.
Adjust the displacement pace so that it will become 10 pieces of data/4000sps or less.
One piece of data corresponds to the Measurement Length/2000.