A5E32268616 Pointek ULS200 – QUICK START MANUAL Page EN-17
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English
Fail-Safe Mode
In the event that a loss of echo condition exceeds the fail-safe timer (speed of response
variable), ? appears in the display; and if a relay is assigned to LOE (alarm function
option), it is engaged. This function must be used with the Output Function on
page 14.
* Factory setting
Fail-Safe Timer
The fail-safe timer allows the user to vary the waiting period from the time of a loss of
echo or operating fault condition begins, until the fail-safe default is effected. The waiting
period is adjustable from 1 to 15 minutes, in 1 minute increments.
Units
The units of the measurement reading can be selected as follows:
1 = metres, m (Factory setting)
2 = feet, ft
The selected units are also applicable to the Blanking and Relay adjustments.
Troubleshooting
The echo is not reliable and Pointek ULS200 is waiting for a valid echo
before updating the measurement.
Maintenance
Pointek ULS200 requires no maintenance or cleaning.
Unit Repair and Excluded Liability
For detailed information, please see the inside back cover.
fail-safe mode function reading
high and high-high low and low-low
1 high on off hold
2 low off on hold
3* hold hold hold hold
Probable causes are: Remedy
material or object in contact with sensor face lower material level or raise Pointek ULS200
Pointek ULS200 is not perpendicular to the material
surface
check Pointek ULS200 mounting
if angle of repose is too steep, angle Pointek
ULS200 mounting
change in level too fast adjust speed of response
material out of range acceptable on some high level switch applications
foam on liquid surface mount Pointek ULS200 via stilling well or pipe
too much dust or interference from material filling relocate Pointek ULS200
high level of vibration in the mounting structure relocate Pointek ULS200 or limit vibration
material inside blanking zone or below range limit adjust blanking or range limit
Fail-safe default after prolonged Loss Of Echo.
Investigate the probable causes listed above.
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