Pepperl+Fuchs LUC-M Series Parts list manual

BA 240O/98/en/01.10
52027993
185572 01/10 01
Valid as of software version
V 01.04.00 (amplifier)
V 01.04.00 (communication)
Ultrasonic Level Sensor
LUC-M** with HART/4 mA ... 20 mA and
PROFIBUS PA
Description of instrument functions
LUC-M10
LUC-M20
LUC-M30
LUC-M40

LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
Short instructions
DOCT-0843A 01/2010 185572
2
Short instructions
Contents of the operating instructions
This operating instrucitons contain all functions of the LUC-M** operating menu. All
types of devices and all communication variants (HART and PROFIBUS PA) are consid-
ered.
Information on mounting, wiring, trouble shooting and maintenance can be found in the
following documents which are supplied together with the instrument:
• BA 237O/98/en (HART)
• BA 238O/98/en (PROFIBUS PA)
E
+
-
+
E
+
-
F
L
D
E
E
E
-
... ...
KA 183O/98/a2/04.05
52027994
185587 04/05 00
BD
... ...
100%
0%
100 (HART)
2457 (PA)
333 (HART)
33333 (PA)
... ...
... ...
LUC-M** - Quick setup
- dome
ceiling
- horizontal
cyl.
- bypass
...
- unknown
- liquid
- > 4 mm
- < 4 mm
- standard
- calm
surface
agitator
- add.
...
input E
(see sketch)
input F
(see sketch)
- ok
- too small
- too big
- unknown
- manual
(see sketch)
000
measured value
group
selection
00
basic setup
01
saf
ety settings
0C
system
parameter
0E
envelope curve
04
linearisation
05
e
xtended calibr.
06
output (HART, FF)
profibus param.(PA)
0A
diagnostics
0A0
present
error
002
tank shape
004
process
cond.
005
empty
calibr.
006
full
calibr.
008
dist./
meas. value
051
check
distance
003
medium
property
052 053
008
dist./
meas. value
0E1
plot settings
0E2
recording
curve
0A1
previous
error
0A4
unlock
parameter
03
temperature
09
display
092
language
BD: blocking distance
0A3
reset
0C0
tag no.
059
blocking
distance
BD is
displayed
(see sketch)
Contrast: + or +
52027994
range of
mapping
start
mapping
confirm
or specify
range
suggestion
displayed
D and L are

LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
Table of Contents
DOCT-0843A 01/2010 185572
3
Short instructions . . . . . . . . . . . . . . . . . . . . . 2
1 Notes on use . . . . . . . . . . . . . . . . . . . . . 5
1.1 Using the table of contents to locate a
function description . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Using the graphic of the function menu to
locate a function description . . . . . . . . . . . . . . . . . . 5
1.3 Using the index of the function menu to
locate a function description . . . . . . . . . . . . . . . . . . 5
1.4 General structure of the operating menu. . . . . . . . . 6
1.5 Display and operating elements . . . . . . . . . . . . . . . 7
1.6 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2 Function menu LUC-M** . . . . . . . . . . . 11
3 Function group "basic setup" (00). . . 13
3.1 Function "measured value" (000) . . . . . . . . . . . . . 13
3.2 Function "tank shape" (002) . . . . . . . . . . . . . . . . . 13
3.3 Function "medium property" (003). . . . . . . . . . . . . 14
3.4 Function "process cond." (004) . . . . . . . . . . . . . . . 14
3.5 Function "empty calibr." (005) . . . . . . . . . . . . . . . . 16
3.6 Function "blocking dist." (059). . . . . . . . . . . . . . . . 16
3.7 Function "full calibr." (006). . . . . . . . . . . . . . . . . . . 17
3.8 Display (008) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.9 Function "check distance" (051) . . . . . . . . . . . . . . 18
3.10 Function "range of mapping" (052) . . . . . . . . . . . . 19
3.11 Funktion "start mapping" (053) . . . . . . . . . . . . . . . 19
3.12 Display (008) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4 Function group
"safety settings" (01). . . . . . . . . . . . . . 21
4.1 Function "output on alarm" (010). . . . . . . . . . . . . . 21
4.2 Function "output on alarm" (011), HART only . . . . 22
4.3 Function "outp. echo loss" (012) . . . . . . . . . . . . . . 23
4.4 Function "ramp %span/min" (013). . . . . . . . . . . . . 24
4.5 Function "delay time" (014) . . . . . . . . . . . . . . . . . . 24
4.6 Function "safety distance" (015) . . . . . . . . . . . . . . 24
4.7 Function "in safety dist." (016). . . . . . . . . . . . . . . . 25
4.8 Function "ackn. alarm" (017) . . . . . . . . . . . . . . . . . 26
5 Function group "temperature" (03) . . 27
5.1 Function "measured temp." (030) . . . . . . . . . . . . . 27
5.2 Function "max. temp. limit" (031). . . . . . . . . . . . . . 27
5.3 Function "max. meas. temp." (032) . . . . . . . . . . . . 27
5.4 Function "react high temp." (033) . . . . . . . . . . . . . 28
5.5 Function "defect temp. sens." (034) . . . . . . . . . . . 28
6 Function group "linearisation" (04) . . 29
6.1 Function "level/ullage" (040) . . . . . . . . . . . . . . . . . 29
6.2 Function "linearisation" (041). . . . . . . . . . . . . . . . . 30
6.3 Function "customer unit" (042) . . . . . . . . . . . . . . . 33
6.4 Function "table no." (043) . . . . . . . . . . . . . . . . . . . 34
6.5 Function "input level" (044) . . . . . . . . . . . . . . . . . . 34
6.6 Function "input volume" (045) . . . . . . . . . . . . . . . . 35
6.7 Function "max. scale" (046). . . . . . . . . . . . . . . . . . 35
6.8 Function "diameter vessel" (047). . . . . . . . . . . . . . 35
7 Function group
"extended calibr." (05). . . . . . . . . . . . . 36
7.1 Function "selection" (050). . . . . . . . . . . . . . . . . . . . 36
7.2 Function "check distance" (051) . . . . . . . . . . . . . . . 36
7.3 Function "range of mapping" (052). . . . . . . . . . . . . 37
7.4 Function "start mapping" (053) . . . . . . . . . . . . . . . . 37
7.5 Function "pres. map dist." (054) . . . . . . . . . . . . . . . 38
7.6 Function "cust. tank map" (055) . . . . . . . . . . . . . . . 38
7.7 Function "echo quality" (056) . . . . . . . . . . . . . . . . . 39
7.8 Function "offset" (057) . . . . . . . . . . . . . . . . . . . . . . 39
7.9 Function "output damping" (058) . . . . . . . . . . . . . . 39
7.10 Function "blocking dist." (059) . . . . . . . . . . . . . . . . 40
8 Function group "output" (06) and
"profibus param." (06). . . . . . . . . . . . . 41
8.1 Function "commun. address" (060), HART only. . . 41
8.2 Function "instrument addr." (060),
PROFIBUS PA only . . . . . . . . . . . . . . . . . . . . . . . . 41
8.3 Function "no. of preambels" (061), HART only. . . . 41
8.4 Function "ident number" (061),
PROFIBUS PA only . . . . . . . . . . . . . . . . . . . . . . . . 42
8.5 Function "thres. main val." (062), HART only . . . . . 42
8.6 Function "set unit to bus" (062),
PROFIBUS PA only . . . . . . . . . . . . . . . . . . . . . . . . 43
8.7 Function "curr. output mode" (063),
HART only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
8.8 Function "out value" (063),
PROFIBUS PA only . . . . . . . . . . . . . . . . . . . . . . . . 44
8.9 Function "fixed cur. value" (064), HART only . . . . . 44
8.10 Function "out status" (064),
PROFIBUS PA only . . . . . . . . . . . . . . . . . . . . . . . . 44
8.11 Function "simulation" (065). . . . . . . . . . . . . . . . . . . 45
8.12 Function "simulation value" (066). . . . . . . . . . . . . . 46
8.13 Function "output current" (067), HART only . . . . . . 46
8.14 Function "2nd cyclic value" (067),
PROFIBUS PA only . . . . . . . . . . . . . . . . . . . . . . . . 46
8.15 Function "4mA value" (068), HART only . . . . . . . . 46
8.16 Function "select v0h0" (068),
PROFIBUS PA only . . . . . . . . . . . . . . . . . . . . . . . . 47
8.17 Function "20mA value" (069), HART only . . . . . . . 47
8.18 Function "display value" (069),
PROFIBUS PA only . . . . . . . . . . . . . . . . . . . . . . . . 47
9 Function group
"envelope curve" (0E) . . . . . . . . . . . . . 48
9.1 Function "plot settings" (0E1) . . . . . . . . . . . . . . . . . 48
9.2 Function "recording curve" (0E2) . . . . . . . . . . . . . . 48
9.3 Function "envelope curve display" (0E3) . . . . . . . . 49
10 Function group "display" (09) . . . . . . 51
10.1 Function "language" (092) . . . . . . . . . . . . . . . . . . . 51
10.2 Function "back to home" (093) . . . . . . . . . . . . . . . . 51
10.3 Function "format display" (094) . . . . . . . . . . . . . . . 52
10.4 Function "no.of decimals" (095) . . . . . . . . . . . . . . . 52
10.5 Function "sep. character" (096) . . . . . . . . . . . . . . . 52
10.6 Function "display test" (097). . . . . . . . . . . . . . . . . . 52

LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
Table of Contents
DOCT-0843A 01/2010 185572
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11 Function group "diagnostics" (0A) . . . 53
11.1 Function "present error" (0A0) . . . . . . . . . . . . . . . 53
11.2 Function "previous error" (0A1) . . . . . . . . . . . . . . 53
11.3 Function "clear last error" (0A2) . . . . . . . . . . . . . . 53
11.4 Function "reset" (0A3). . . . . . . . . . . . . . . . . . . . . . 54
11.5 Function "unlock parameter" (0A4). . . . . . . . . . . . 55
11.6 Function "measured dist." (0A5) . . . . . . . . . . . . . . 56
11.7 Function "measured level" (0A6) . . . . . . . . . . . . . 57
11.8 Function "detection window" (0A7) . . . . . . . . . . . . 57
11.9 Function "application par." (0A8) . . . . . . . . . . . . . 58
12 Function group
"system parameters" (0C) . . . . . . . . . . 59
12.1 Function "tag no." (0C0) . . . . . . . . . . . . . . . . . . . . 59
12.2 Function "Profile Version" (0C1),
PROFIBUS PA only . . . . . . . . . . . . . . . . . . . . . . . 59
12.3 Function "protocol+sw-no." (0C2) . . . . . . . . . . . . . 59
12.4 Function "serial no." (0C4) . . . . . . . . . . . . . . . . . . 60
12.5 Function "distance unit" (0C5) . . . . . . . . . . . . . . . 60
12.6 Function "temperature unit" (0C6) . . . . . . . . . . . . 61
12.7 Function "download mode" (0C8) . . . . . . . . . . . . . 61
13 Function group "service" (0D). . . . . . . 61
14 Signal evaluation. . . . . . . . . . . . . . . . . . 62
14.1 Envelope curve . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
14.2 Interference echo suppression (tank mapping) . . . 63
14.3 Floating Average Curve (FAC) . . . . . . . . . . . . . . . 64
15 Trouble shooting. . . . . . . . . . . . . . . . . . 65
15.1 System error messages. . . . . . . . . . . . . . . . . . . . . 65
15.2 Application errors . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Index function menu . . . . . . . . . . . . . . . . . . 73

LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
Notes on use
DOCT-0843A 01/2010 185572
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1 Notes on use
You have various options for accessing the descriptions of instrument functions or how
to enter parameters.
1.1 Using the table of contents to locate a function description
All the functions are listed in the table of contents sorted by function group (e. g.
"basic setup", "safety settings", etc.). You can access a more detailed description of a
function by using a page reference.
The table of contents is on page 3.
1.2 Using the graphic of the function menu to locate a function
description
This guides you step by step from the highest level, the function groups, to the exact
function description you require.
All the available function groups and instrument functions are listed in the table
(see page 11). Select your required function group or function. You can access an exact
description of the function group or function by using a page reference.
1.3 Using the index of the function menu to locate a function
description
To simplify navigation within the function menu, each function has a position which is
shown in the display. You can access each function via a page reference in the function
menu index (see page 73) which lists all the function names alphabetically and
numerically.

LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
Notes on use
DOCT-0843A 01/2010 185572
6
1.4 General structure of the operating menu
The operating menu is made up of two levels:
•Function groups (00, 01, 03, …, 0C, 0E):
The individual operating Selection of the instrument are split up roughly into different
function groups. The function groups that are available include, e. g.: "basic
setup", "safety settings", "output", "display", etc.
•Functions (001, 002, 003, …, 0E2, 0E3):
Each function group consists of one or more functions. The functions perform the
actual operation or parameterisation of the instrument. Numerical values can be
entered here and parameters can be selected and saved. The available functions
of the "basic setup" (00) function group include, e. g.: "tank shape" (002),
"medium property" (003), "process cond." (004), "empty calibr." (005), etc.
If, for example, the application of the instrument is to be changed, carry out the following
procedure:
1. Select the "basic setup" (00) function group.
2. Select the "tank shape" (002) function (where the existing tank shape is selected).
1.4.1 Identifying the functions
For simple orientation within the function menus (see page 11 ff.), for each function a
position is shown on the display.
The first two digits identify the function group:
The third digit numbers the individual functions within the function group:
Hereafter the position is always given in brackets (e. g. "tank shape" (002)) after the
described function.
• basic setup 00
• safety settings 01
• temperature 03
…
• basic setup 00 • tank shape 002
• medium property 003
• process cond. 004
…
function
function group

LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
Notes on use
DOCT-0843A 01/2010 185572
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1.5 Display and operating elements
1.5.1 Display
Liquid crystal display (LCD):
Four lines with 20 characters each. Display contrast adjustable through key
combination.
ENDRESS+HAUSER
MICROPILOTII
IP65
OrderCode:
Ser.-No.:
Messbereich
Measuringrange
U16...36VDC
4...20mA
max.20m
MadeinGermany Maulburg
T>70C:
At>85C
E
+
–
LCD
(Liquid crystal display)
Symbols 3 keys
Snap-fit
Bargraph
Selection list
Help texts
Envelope
curve
Label
Label
Position in menu
Position in menu
Value Unit Symbol
Measured value
display
Group selection
Function with
free parameter
Envelope curve
display

LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
Notes on use
DOCT-0843A 01/2010 185572
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1.5.2 Display symbols
The following table describes the symbols that appear on the liquid crystal display:
1.5.3 Key assignment
The operating elements are located inside the housing and are accessible for operation
by opening the lid of the housing.
Function of the keys
Symbol Meaning
ALARM_SYMBOL
This alarm symbol appears when the instrument is in an alarm state. If the symbol flashes, this
indicates a warning.
LOCK_SYMBOL
This lock symbol appears when the instrument is locked, i. e. if no input is possible.
COM_SYMBOL
This communication symbol appears when a data transmission via e. g. HART or
PROFIBUS PA is in progress.
Key(s) Meaning
Oor VNavigate upwards in the selection list
Edit numeric value within a function
Sor WNavigate downwards in the selection list
Edit numeric value within a function
Xor ZNavigate to the left within a function group
FNavigate to the right within a function group, confirmation
Oand F
or
Sand F
Contrast settings of the LCD
Oand Sand F
Hardware lock/unlock
After a hardware lock, an operation of the instrument via display or
communication is not possible!
The hardware can only be unlocked via the display. An unlock parameter must be
entered to do so.

LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
Notes on use
DOCT-0843A 01/2010 185572
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1.5.4 Operation using the on-site display LUC-Z15
1. Change from Measured Value Display to Group Selection by pressing F.
2. Press Sor Oto select the required Function Group and confirm by pressing F.
The active selection is marked by a in front of the menu text.
3. Activate Edit mode with Oor S.
Selection menus
a) Select the required Parameter in selected function with Sor O.
b) Fconfirms selection →appears in front of the selected parameter.
c) Fconfirms the edited value →system quits edit mode.
d) Oand S(= Q) interrupts selection →system quits edit mode.
Typing in numerals and text
a) Press Oor Sto edit the first character of the numeral/text.
b) Fpositions the cursor at the next character →continue with a) until you have
completed your input.
c) If a ↵symbol appears at the cursor, press Fto accept the value entered →
system quits edit mode.
d) If a ←symbol appears at the cursor, press Fto return to the previous character
(e. g. for correction of entries).
e) Oand S(= Q) interrupts selection; →system quits edit mode.
4. Press Fto select the next function.
5. Press Oand S(= Q) once →return to previous function.
Press Oand S(= Q) twice →return to Group Selection.
6. Press Oand S(= Q) to return to Measured value display.
E
+
–
XX
X
X
S
SS
OOO
FF
>3 s
F
...
2x
...
...

LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
Notes on use
DOCT-0843A 01/2010 185572
10
1.6 Commissioning
1.6.1 Switching on the measuring device
When the instrument is switched on for the first time, the following messages appear on
the display:

After 5 s, the following message appears
After 5 s or after you have pressed Fthe
following message appears
Select the language
(this message appears the first time the
instrument is switched on)

Select the basic unit
(this message appears the first time the
instrument is switched on)

The current measured value is displayed
After Fis pressed, you reach the group
selection.
This selection enables you to perform the basic
setup
E
+
–

LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
Function menu LUC-M**
DOCT-0843A 01/2010 185572
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2 Function menu LUC-M**
Function group Function Description
basic setup 00 measured value 000 page 13
(see page 13) tank shape 002 page 13
medium property 003 page 14
process cond. 004 page 14
empty calibr. 005 page 16
blocking dist. 059 page 16
full calibr. 006 page 17
display 008 page 17
check distance 051 page 18
range of mapping 052 page 19
start mapping 053 page 19
display 008 page 20
safety settings 01 output on alarm 010 page 21
(see page 21) output on alarm (HART only) 011 page 22
outp. echo loss 012 page 23
ramp %span/min 013 page 24
delay time 014 page 24
safety distance 015 page 24
in safety dist. 016 page 25
ackn. alarm 017 page 26
temperature 03 measured temp. 030 page 27
(see page 27) max. temp. limit 031 page 27
max. meas. temp. 032 page 27
react high temp. 033 page 28
defect temp. sens. 034 page 28
linearisation 04 level/ullage 040 page 29
(see page 29) linearisation 041 page 30
customer unit 042 page 33
table no. 043 page 34
input level 044 page 34
input volume 045 page 35
max. scale 046 page 35
diameter vessel 047 page 35
extended calibr. 05 selection 050 page 36
(see page 36) check distance 051 page 36
range of mapping 052 page 37
start mapping 053 page 37
pres. map dist. 054 page 38
cust. tank map 055 page 38
echo quality 056 page 39
offset 057 page 39
output damping 058 page 39
blocking dist. 059 page 40

LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
Function menu LUC-M**
DOCT-0843A 01/2010 185572
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Function group Function Description
output 06 commun. address (HART only) 060 page 41
profibus param. 06 instrument addr. (PROFIBUS PA only) 060 page 41
PROFIBUS PA only
(see page 41)
no. of preambels (HART only) 061 page 41
ident number (PROFIBUS PA only) 061 page 42
thres. main val. (HART only) 062 page 42
set unit to bus (PROFIBUS PA only) 062 page 43
current output mode (HART only) 063 page 43
out value (PROFIBUS PA only) 063 page 44
fixed cur. value (HART only) 064 page 44
out status (PROFIBUS PA only) 064 page 44
simulation 065 page 45
simulation value 066 page 46
output current (HART only) 067 page 46
2nd cyclic value (PROFIBUS PA only) 067 page 46
4mA value (HART only) 068 page 46
select v0h0 (PROFIBUS PA only) 068 page 47
20mA value (HART only) 069 page 47
display value (PROFIBUS PA only) 069 page 47
envelope curve 0E plot settings 0E1 page 48
(see page 48) recording curve 0E2 page 48
envelope curve display 0E3 page 49
display 09 language 092 page 51
(see page 51) back to home 093 page 51
format display 094 page 52
no.of decimals 095 page 52
sep. character 096 page 52
display test 097 page 52
diagnostics 0A present error 0A0 page 53
(see page 53) previous error 0A1 page 53
clear last error 0A2 page 53
reset 0A3 page 54
unlock parameter 0A4 page 55
measured dist. 0A5 page 56
measured level 0A6 page 57
detection window 0A7 page 57
application par. 0A8 page 58
system parameter 0C tag no. 0C0 page 59
(see page 59) Profile Version (PROFIBUS PA only) 0C1 page 59
protocol+sw-no. 0C2 page 59
serial no. 0C4 page 60
distance unit 0C5 page 60
temperature unit 0C6 page 61
download mode 0C8 page 61
service 0D page 61

LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
Function group "basic setup" (00)
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3 Function group "basic setup" (00)
3.1 Function "measured value" (000)
This function displays the current measured value in the selected unit (see "customer
unit" (042) function). The number of places after decimal point can be selected in the
"no.of decimals" (095) function.
3.2 Function "tank shape" (002)
This function is used to select the tank shape.
Selection:

E
+
–

E
+
–

E
+
–
dome ceiling
sphere
horizontal cyl.
no ceiling
e. g. dumps, open levels
chanels, weirs
flat ceiling
bypass stilling well
(ultrasonic guide pipe)

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Function group "basic setup" (00)
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3.3 Function "medium property" (003)
This function is used to set the medium properties:
Selection:
•unknown (e. g. pasty media such as greases, creams, gels etc.)
•liquid
• solid, grain size < 4mm (fine)
• solid, grain size > 4mm (coarse)
3.4 Function "process cond." (004)
For this function, you have the following options:

E
+
–

E
+
–

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Standard liquids Calm surface Turb. surface
For all fluid applications which do not fit in any
of the following groups.
Storage tanks with immersion tube or bottom
filling
Storage/accumulation tanks with uneven
surface due to free filling, mixing nozzles or
small bottom stirrers.
The filters and output damping are set to
average values.
The averaging filters and output damping are
set to large values.
- stable measured value
- accurate measurement
- slow reaction time
Special filters for stabilising the input signal
are activated.
- stable measured value
- medium reaction time
Add. agitator Fast change Standard solid
Moving surfaces (poss. with vortex formation)
due to agitators
Rapid level change, particularly in small tanks For all bulk solids applications which do not fit
in any of the following groups.
Special filters for stabilising the input signal
are set to large values.
- stable measured value
- medium reaction time
The averaging filters are set to small values.
- rapid reaction time
- possibly unstable measured value
The filter and output damping are set to
average values.
Solid dusty Conveyor belt Test:no filter
Dusty bulk solids Bulk solids with rapid level change All the filters can be switched off for purposes
of service and diagnosis.
The filters are set to detect even relatively
weak signals.
The averaging filters are set to small values.
- rapid reaction time
- possibly unstable measured value
All filters off

LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
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3.5 Function "empty calibr." (005)
This function is used to enter the distance from the sensor membrane (reference point
of the measurement) to the minimum level (= zero).
"Caution!
For dish bottoms or conical outlets, the zero point should be no lower than the point at
which the radar beam hits the bottom of the tank.
3.6 Function "blocking dist." (059)
In this function the blocking distance is displayed. Level echoes within the blocking
distance can not be detected by the LUC-M**. Make sure that the maximum level will
never run into the blocking distance.

E
+
–
Empty calibration
100 %
0 %
E
E:

E
+
–

LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
Function group "basic setup" (00)
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3.7 Function "full calibr." (006)
This function is used to enter the distance from the minimum level to the maximum level
(= span).
"Caution!
The maximum level may not project into the blocking distance (BD). If the blocking
distance is compromised, it may cause device malfunction.
After basic calibration, enter a safety distance (SD) in the "safety distance" (015)
function. If the level is within this safety distance, the LUC-M** signals a warning or an
alarm, depending on your selection in the "in safety distance" (016) function.
3.8 Display (008)
The distance measured from the sensor membrane to the product surface and the
level calculated with the aid of the empty calibration are displayed. Check whether the
values correspond to the actual level or the actual distance. The following cases can
occur:
• Distance correct – level correct continue with the next function,
"check distance" (051).
• Distance correct – level incorrect check "empty calibr." (005).
• Distance incorrect – level incorrect continue with the next function,
"check distance" (051).

E
+
–
Full calibration (span)
Blocking distance
Safety distance
100 %
0 %
F
BD
SD
F:
BD:
SD:

E
+
–

LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
Function group "basic setup" (00)
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3.9 Function "check distance" (051)
This function triggers the mapping of interference echoes. To do so, the measured
distance must be compared with the actual distance to the product surface. The
following options are available for selection:
Selection:
• distance = ok
• dist. too small
• dist. too big
• dist. unknown
• manual
distance = ok
• Mapping is carried out up to the currently measured echo.
• The range to be suppressed is suggested in the "range of mapping" (052)
function.
Anyway, it is wise to carry out a mapping even in this case.
dist. too small
• At the moment, an interference is being evaluated.
• Therefore, a mapping is carried out including the presently measured echoes.
• The range to be suppressed is suggested in the "range of mapping" (052)
function.
dist. too big
• This error cannot be remedied by interference echo mapping.
• Check the application parameters (002), (003), (004) and "empty calibr." (005).

E
+
–
distance too small distance = ok

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dist. unknown
If the actual distance is not known, no mapping can be carried out.
manual
A mapping is also possible by manual entry of the range to be suppressed. This entry is
made in the "range of mapping" (052) function.
"Caution!
The range of mapping must end 0.5 m (20 in) before the echo of the actual level. For an
empty tank, do not enter E, but E - 0.5 m (20 in).
3.10 Function "range of mapping" (052)
This function displays the suggested range of mapping. The reference point is always
the sensor membrane. This value can be edited by the operator.
For manual mapping, the default value is: 0 m.
3.11 Funktion "start mapping" (053)
This function is used to start the interference echo mapping up to the distance given in
"range of mapping" (052).
Selection:
"Caution!
If a mapping already exists, it is overwriten up to the distance specified in
"range of mapping" (052). Beyond this value the existing mapping remains
unchanged.

E
+
–

E
+
–
•off:no mapping is carried out
• on: mapping is started

LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
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3.12 Display (008)
The distance measured from the reference point to the product surface and the level
calculated with the aid of the empty alignment are displayed again. Check whether the
values correspond to the actual level or the actual distance. The following cases can
occur:
• Distance correct – level correct basic setup completed.
• Distance incorrect – level incorrect a further interference echo mapping must be
carried out "check distance" (051).
• Distance correct – level incorrect check "empty calibr." (005).
!Note!
After the basic setup, an evaluation of the measurement with the aid of the envelope
curve ("evelope curve" (0E) function group) is recommended.

E
+
–

After 3 s, the following message appears
E
+
–