Siemens sitrans PROBE LU - Configuration and GSD File; PROFIBUS Address and Bus Termination; Power Demands Calculation

A5E32337695 SITRANS Probe LU (HART) – OPERATING INSTRUCTIONS Page 17
Operation
Operating the SITRANS Probe LU
SITRANS Probe LU has two modes of operation: RUN and PROGRAM.
RUN Mode
SITRANS Probe LU automatically starts in RUN mode when power is applied, and detects
the material level. The primary reading displays the material level (in meters) referenced
from Empty (process empty level). This is the default start-up display mode.
System status is displayed on the LCD, or on a remote communications terminal.
Display
1 – Primary Reading (displays level, distance, or volume (or flow
1
), in either units or
percent)
2 – Secondary Reading (displays Parameter number for Auxiliary Reading
2
)
3 – Echo status indicator: Reliable Echo or Unreliable Echo
4 – Units or Percent
5 – Active bar graph represents material level
6 – Auxiliary Reading (depending on the parameter selected, it displays milliAmp value,
distance or confidence, with units where applicable)
If the echo confidence drops below the echo confidence threshold
3
, the failsafe timer
starts running. When the timer expires, the letters LOE alternate with the reading every
two seconds, and the Reliable Echo indicator is replaced by the Unreliable Echo indicator.
When a valid reading is received, the level reading display returns to normal operation.
1.
See P050 Vessel (or Channel) Shape on page 35, for details on displaying flow instead of
volume.
2.
Press to display the auxiliary reading field when in RUN mode.
3.
See P804 Confidence Threshold on page 57 for more detail.
m
m
Normal operation Fail-safe operation
1
3
5
4
6
1
3
6
2
5
4