Common Problems Chart - Siemens HydroRanger 200 HMI Operating Instructions Manual

10.3

Common problems chart

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