Switch-On Phase - Siemens SITRANS LG260 Operating Instructions Manual

Supplementary electron-
ics - Additional current
output
22
To make a second measured value available for use, you can use the
supplementary electronics "Additional current output".
Both current outputs are passive and need a power supply.
Fig. 14: Terminal compartment, double chamber housing, supplementary elec-
tronics "Additional current output"
1 First current output (I) - Voltage supply and signal output, sensor (HART)
2 Additional current output (II) - Voltage supply and signal output (without
HART)
3 Ground terminal for connection of the cable screen
5.5

Switch-on phase

After SITRANS LG260 is connected to the bus system, the instrument
carries out a self-test for approx. 30 seconds. The following steps are
carried out:
•
Internal check of the electronics
•
Indication of a status message, e.g. "F 105 Determine measured
value" on the display or PC
•
Status byte goes briefly to fault value
Then the actual measured value is outputted to the signal cable. The
value takes into account settings that have already been carried out,
e.g. default setting.
SITRANS LG260 - Operating Instructions
I
4...20mA
+
1
2
( ) (-)
3
1
I I
4...20mA
+
7 8
( ) (-)
2
PBD-51041059