Siemens SITRANS LUT400 - Common Problems Chart

SITRANS LUT400
Operating Instructions, 07/2019, A5E33329501-AC
273
General Fault Codes
Code / LUI
Icon
Code /
PDM Icon
Meaning
Corrective Action
131
131 Parameter backup did not suc-
ceed.
Communication or file system
problems.
Repair required. Contact your
local Siemens representative.
132
132
User input required.
Serial numbers mismatch.
Manually force recovery. (Set
parameter Backup Control
(3.3.2.) (Page 246).)
133 133
Simulation Enabled. Simulation is active.
Enable or disable simulation via
LUI (Level Simulation Enable
(3.4.1.1.) (Page 258),Discrete
Input 1 (3.4.2.1.) (Page 259),
Discrete Input 2 (3.4.2.2.)
(Page 259)).
11.4 Common Problems Chart
Symptom
Possible Cause
Action
Display blank, transduc-
er not pulsing
No power, incorrect power Check mains voltage at terminals;
Check fuse;
Check wiring connections;
Check wiring.
Display blank, transduc-
er is pulsing
Loose or disconnected
display cable
Reconnect display cable.
Display active, trans-
ducer not pulsing
Incorrect transducer con-
nections or wiring;
Incorrect transducer se-
lection (or set to NO
Transducer);
Transducer has been
disabled through the soft-
ware
Verify terminal connections;
Check transducer field wiring;
Check any junction box connections;
Check that transducer is enabled (see Trans-
ducer Enable (3.3.1.) (Page 245))
Reading fluctuates while
material level is still
Material level is changing
Visually verify, if possible.
Strong false echoes Determine source of false echoes; Relocate
transducer to avoid source.
Incorrect damping Adjust damping. See Damping Filter (2.3.3.)
(Page 174).
Improper echo Algorithm
selection
Set algorithm to default. If no improvement,
try a different algorithm. See Algorithm
(2.12.2.1.) (Page 220).
High noise levels Verify source and minimize. See Noise Prob-
lems (Page 276).