Limaco ULM-3D Series, Руководство по эксплуатации и установке

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Failure Cause Troubleshooting method
- a small amplitude of re-
flected signal – application
on products with low dielec-
tric conductivity, applica-
tion on bulk products, elec-
tronic unit failure Make spectrum recordings (see cl.
7.3.), send it to the technical sup-
port. Follow further recommenda-
tions.
- signal loss - sudden
changes in the properties of
reflecting surface: foaming,
bulk product collapses,
overlapping of the measur-
ing beam with the product
flow Provided for reference, when a sta-
ble reflected signal appears and the
process normalizes, the current sig-
nal should restore. If this does not
happen, make spectrum recordings
(see cl. 7.3.) and send it to the tech-
nical support.
4-20 mA sig-
nal does not
correspond to
the actual val-
ue of the mo-
nitored varia-
ble. The malfunction of level
transmitter electronic unit Check the current signal perfor-
mance by emulation (cl. 7.2). In
case of non-conformance, send the
device for repair.
4-20 mA sig-
nal does not
correspond to
the actual val-
ue of the mo-
nitored varia-
ble, the elec-
tronic unit is
in good work-
ing order Incorrect initial settings of
key measurement parame-
ters (cl. 6.3.), violated in-
stallation requirements (cl.
4). Make spectrum recordings (see cl.
7.3.), send it to the technical sup-
port. Follow further recommenda-
tions.
No RS-485
connection in
the presence
of 4-20 mA
signal The electrical connection of
the line is damaged. Check and restore the line or elimi-
nate non-compliance with the re-
quirements and connection diagram
(see cl. 5).
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RE_ULM3DX_18_02_20