Hawk MiniWave Ultrasonic Level Series, Руководство пользователя

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Troubleshooting
MiniWave User Manual
10
Unit is displaying incorrect distance
• Confirm display mode is suitable.
Space is measured from Sensor face to measured level.
Material is measured from Low Level to measured level.
• If unit is measuring too deep increase Sensitivity .
If the unit continues to measure too deep, increase
WaveBoost
• If unit is measuring too high, reduce Sensitivity and
ensure WaveBoost is set to 0.
• Check if material is present to be measured. Unit
will output and display FailSafe reading if it cannot
detect a level within range.
PLC indication does not match measurement
• Connect a Multimeter in series with the powered
loop. Compare the 'mA' diagnostic on the display
with the mA reading on the loop. If these values do
not match, disconnect the loop wires and measure
the resistance across the loop. This should not
exceed specification.
• Confirm
High Level
and
Low Level
are set to the
same values in MiniWave and control system.
Analogue trend is erratic/unstable
• Increase ' Damping ' value for smoother trends.
• Choose a slower ' Tracking ' speed.
• Check there are no objects interfering with the
transit pulse in the application (such as ladders and
cross beams).
Unit is locked up or flat line measurement
• Confirm there is material within measurement
range, the unit may go to Failsafe if there is no flat
level available.
• If the unit is locked to a high level perform
Mapping
for distance beyond false echoes.
• If the unit is locked higher than the real level check
for objects interfering with the transit pulse in the
application (such as ladders and cross beams).
Lower the Sensitivity/WaveBoost . Re-locate the
installation to avoid the interfering object.
• If the unit is locked lower than the real level confirm
the application is not within
Blanking distance.
Increase Sensitivity/WaveBoost until unit
measures correct level.
•
Tracking speed may be too slow for the application.
Increase Tracking speed.
AutoSet fails
• Increase ' Sensitivity ' to a higher value.
• Allow the unit to run for a longer time (one minute).
Re-attempt the AutoSet.
• Increase
WaveBoost and re-
attempt the AutoSet.
• Set High and Low level manually in 'Setup' menu.
If problems persist, install replacement
MiniWave in the application.
'Bench test' the problem unit in a controlled
environment.
Difficult applications may be required a low
frequency Acoustic Wave device. Contact
HAWK for information about the Sultan series.