Siemens sitrans LU01 User Manual
Page 97
7ML19985BE02
SITRANS LU01 – INSTRUCTION MANUAL
Page 91
mm
mmm
Te
c
hnical Ref
e
re
nce
Parameter Settings for Point # 1
With process control equipment disabled, enter the RUN mode to monitor system
performance and alarm programming. Otherwise, perform a Reading Measurement
simulation (P920).
When satisfied with system performance and programming:
•
connect a high alarm indicator to Relay #1 (see P100 = 4).
•
connect a low alarm indicator to Relay #2.
•
connect a high high alarm indicator and filling equipment stop/start control to
Relay #3.
•
connect a low low alarm indicator to Relay # 4.
(Note that relays are de-energized in power off and alarm conditions).
For cement applications (or any very dusty dry solids), measurement difficulties during
vessel filling are common. For this example (assume the maximum filling rate), failsafe
operates as follows:
e.g.
Number
Description
Instructions
P001
Operation
Enter "1" for
level
.
P002
Material
Enter "2" for
solid
.
P003
Measurement Response
Enter "1" for
slow
(0.1 m/min).
P004
Transducer
Enter "107" for
XLT-30
.
P005
Units
No entry required, (preset for
metres
).
P006
Empty
Enter "30" for transducer face to Empty equals
30.00
metres
.
P007
Span
No entry required, (preset to
29.01 metres
).
P070
Failsafe Timer
Enter "2" for failsafe activation after
2 minutes
without
a valid echo.
P071
Failsafe Material Level
Enter "HI" for
advance to Span on "LOE"
.
P072
Failsafe Advance
No entry required. (preset to
restricted
).
P100
Relay Set Up
Enter "4" for
High, Low, High High, and Low Low
alarm
relays.
P101
High
Alarm
Enter "25" for
High
Alarm at
25.00 m
.
P102
Low
Alarm
Enter "10" for
Low
Alarm at
10.00 m
.
P103
High
High
Alarm
Enter "27" for
High
High
Alarm at
27.00 m
.
P104
Low
Low
Alarm
Enter "5" for
Low
Low
Alarm at
5.000 m
.
09:15 am
Echo lost at 6.00 m, low alarm is still on, failsafe coundown begins
09:17 am
Failsafe activated,
actual level = 6.16 m,
reported level = 6.00 m.
09:57 am
Low alarm off,
actual level = 9.36 m,
reported level = 10.00 m.
12:27 am
High alarm on,
actual level = 21.36 m,
reported level = 25.00 m.
12:47 am
Infeed stopped,
actual level = 22.96 m,
reported level = 27.00 m.