Troubleshooting; Maintenance - Siemens Milltronics Pointek ULS200 Quick Start Manual

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.
fail-safe mode
1
2
3*
* 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

Probable causes are:
material or object in contact with sensor face
Pointek ULS200 is not perpendicular to the material
surface
change in level too fast
material out of range
foam on liquid surface
too much dust or interference from material filling
high level of vibration in the mounting structure
material inside blanking zone or below range limit

Maintenance

Pointek ULS200 requires no maintenance or cleaning.
Unit Repair and Excluded Liability
For detailed information, please see the inside back cover.
A5E32268616
high and high-high low and low-low
high on
low off
hold hold
The echo is not reliable and Pointek ULS200 is waiting for a valid echo
before updating the measurement.
Pointek ULS200 – QUICK START MANUAL
function
off
on
hold
Remedy
lower material level or raise Pointek ULS200
check Pointek ULS200 mounting
if angle of repose is too steep, angle Pointek
ULS200 mounting
adjust speed of response
acceptable on some high level switch applications
mount Pointek ULS200 via stilling well or pipe
relocate Pointek ULS200
relocate Pointek ULS200 or limit vibration
adjust blanking or range limit
Fail-safe default after prolonged Loss Of Echo.
Investigate the probable causes listed above.
reading
hold
hold
hold
Page EN-17