General Appendix C: Troubleshooting; Common Problems Chart - Siemens MAG 1100 Operating Instructions Manual

General Appendix C: Troubleshooting

Many of the parameters and techniques described here require extensive
Note:
knowledge of ultrasonic technologies and Siemens Milltronics echo processing
software. Use this information with caution.
If the setup becomes too confusing use P999 to reset and start again.

Common Problems Chart

Symptom
Display blank, transducer
not pulsing.
No response to program-
mer.
Displays Short and tb:(#).
Displays Open and tb:(#).
Displays LOE.
Displays Error and tb:(#).
Displays EEEE
Reading fluctuates while
material level is still (or
vice versa).
Reading is fixed, regard-
less of the actual mate-
rial level.
Material level reported is
always incorrect by the
same amount.
Measurement accuracy
improves as level nears
transducer.
Reading is erratic, with
little or no relation to
material level.
7ML19981FB05 MultiRanger 100/200 – INSTRUCTION MANUAL
Cause
No power.
Obstructed infrared interface,
defective programmer.
Short circuited transducer cable,
or defective transducer at indi-
cated terminal block number.
Transducer not connected or con-
nection reversed.
Open circuited transducer cable,
or defective transducer at indi-
cated terminal block number.
Weak or non-existent echo.
Wrong transducer selected
(P004).
Transducer connected in "two
wire" method.
Transducer connected back-
wards.
Value too large to display in 4 or 5
characters.
Incorrect measurement stabiliza-
tion.
Transducer acoustic beam
obstructed, standpipe too nar-
row, or transducer ringing (reads
over 100%).
Incorrect Empty (zero) reference
for level operation
(P001 = 1).
Incorrect Sound Velocity used for
distance calculation.
True echo too weak or wrong
echo being processed.
Action
Check power supply, wiring, or
power fuse.
Check programmer usage:
15 cm (6") from faceplate
pointed at upper target.
Repair or replace as necessary.
Check connection to displayed ter-
minal blocks.
Repair or replace as necessary.
Relocate and/or re-aim transducer
at material.
Proceed to Measurement Difficul-
ties.
Verify transducer type and re-enter
value.
Do not tie white and shield together.
Use all three terminal blocks.
Reverse black and white wires on
terminal block.
Select larger Units (P005), or lower
Convert Reading (P061).
Alter Maximum Process Speed
(P003) or damping (P704) accord-
Maximum Process Speed
ingly. See
Relocate and / or re-aim transducer
at material level or object.
Proceed to Measurement Difficul-
ties below.
Transducer Ringing
See also:
See Empty (P006), Reading Offset
(P063), Offset Calibration (P650), &
Offset Correction (P652).
Use a transducer with a built-in tem-
perature sensor or a TS-3 tempera-
ture sensor.
Sound Velocity
See .
Relocate and / or re-aim transducer
at material.
Check noise parameters. See
Problems
.
.
.
Noise
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