Siemens SITRANS LR 300 Schnellstartanleitung Seite 6

SITRANS LR 300 Wiring
supply voltage ac or dc
RUN Mode and PROGRAM Mode
The SITRANS LR 300 has two modes of operation: RUN and PROGRAM.
When installation is complete and power is first supplied to the SITRANS LR 300, it starts in
RUN mode and detects the distance from the instrument flange to the target in meters. This is
the default start-up display mode.
When you select PROGRAM mode, the SITRANS LR 300 stops responding to the process. It
stores the most recent measurement, and holds the associated readings and mA signal output.
The unit reverts to the parameter last addressed during the previous program session.
When you select RUN mode, the transceiver resumes operation. The reading and mA output
default to the last measurement taken. The reading and associated outputs migrate to the
current process level at a rate controlled by the measurement response (P003).
If the SITRANS LR 300 is left in PROGRAM mode for 10 minutes without input, it automatically
reverts to RUN mode.
RUN Mode Display
representation of
material level,
0 to 100% of Span
PROGRAM Mode Display
parameter value
Page EN-4
Downloaded from www.Manualslib.com
HART/mA or
Profibus-PA
RS-485
Modbus, or Dolphin
protocol
active
bar graph
confidence icons
parameter type
inactive
bar graph
programming indicator
SITRANS LR 300 – QUICK START MANUAL
manuals search engine
shield, installed on
1
IS version only
I O
2
3 A
R
S
4 B 4
8
5
5
COM
6
L2/N
7
L1/+
Reading
Percentage or Units,
dependent on parameter number
blinking "Heartbeat" ,
indicates device is running
Reading Questionable, appears during fail-safe
operation
Auxiliary Reading
= normal reading
= fail-safe operation
index value
Percentage or Units,
dependent on parameter value
blinking "Heartbeat" ,
indicates device is running
EDIT icon indicates new value
being entered
parameter number
7ML19985QA82