Siemens SITRANS LR 300 Guía Para La Puesta En Marcha página 6

SITRANS LR 300 Wiring
HART/mA or
Profibus-PA
RS-485
Modbus, or Dolphin
protocol
Supply voltage ac or dc
Note:
All Input/Output wiring must be shielded for CE compliance, except for supply
voltage.
All field wiring must have insulation suitable for the applied input voltage.
RUN Mode and PROGRAM Mode
The SITRANS LR 300 has two modes of operation: RUN and PROGRAM.
After you complete the installation procedures and power up 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.
RUN Mode Display
Active
Bar Graph
representation of
material level,
0 to 100% of Span
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).
Page EN-4 SITRANS LR 300 – QUICK START MANUAL
1
I O
2
3
A
R
S
4 4
B
8
5
5
COM
6
L2/N
7
L1/+
Confidence Icons
Shield, installed
on IS version only
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
7ML19985QA81