Siemens HydroRanger 200 HMI, Руководство по эксплуатации

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Diagnosing and troubleshooting
10.3 Common problems chart
HydroRanger 200 HMI
Operating Instructions, 06/2018, A5E36281317-AC
283
10.3 Common problems chart
Symptom Possible cause Action
Display blank, trans-
ducer not pulsing
No power, incorrect
power
Check mains voltage at terminals; Check fuse;
Check wiring connections; Check wiring.
Display blank, trans-
ducer is pulsing
Loose or disconnected
display cable
Reconnect display cable.
Display active,
transducer not puls-
ing
Incorrect transducer
connections or wiring;
Incorrect transducer
selection (or set to NO
Transducer); Transducer
has been disabled
through the software.
Verify terminal connections; Check transducer field
wiring; Check any junction box connections; Check
that transducer is enabled [see Transducer (2.1.5.)
(Page 164)].
Reading fluctuates
while material level
is still
Material level is chang-
ing
Visually verify, if possible.
Strong false echoes Determine source of false echoes; Relocate trans-
ducer to avoid source.
Incorrect damping Adjust damping. See Response rate (2.3.4.)
(Page 174).
Improper echo algorithm
selection
Set algorithm to default. If no improvement, try a
different algorithm. See Algorithm (2.11.2.2.)
(Page 222).
High noise levels Verify source and minimize. See Noise problems
(Page 286).
Weak echo Determine cause; Check noise, confidence, and
echo strength. See Echo quality (3.2.11.)
(Page 262).
Foam on surface of
material
Eliminate source of foaming; Use stilling well.
Rapid temperature
changes
Use an external temperature sensor. See Temper-
ature source (2.11.1.4.) (Page 219).
Faulty temperature sen-
sor
Verify operation; Replace if required, or use fixed
temperature. See Temperature source (2.11.1.4.)
(Page 219).
Vapours If fluctuation is unacceptable, consider an alterna-
tive technology. Contact your Siemens representa-
tive.
Reading is fixed, but
material level
changes or reading
does not follow ma-
terial level
Incorrect speed of re-
sponse
Verify response speed setting is adequate for pro-
cess. See Response rate (2.3.4.) (Page 174) (set
in the Quick Start Wizard).
Loss of Echo condition
(LOE)
Check Noise, Echo Strength, Confidence. See
Echo quality (3.2.11.) (Page 262).
Check LOE Timer is not set too short. See LOE
timer (2.4.2.) (Page 177).
Agitator blade stopped in
front of transducer (false
echo)
Ensure agitator is running.
Foam on surface of
material
Eliminate source of foaming. Use stilling well.