Switch-On Phase - Siemens SITRANS LG260 Operating Instructions Manual

PBD-51041057
Both current outputs are passive and need a power supply.
Fig. 20: Terminal compartment, double chamber housing, supplementary elec-
tronics - additional current output
1 First current output (I) - Voltage supply and signal output (HART)
2 Second current output (II) - Voltage supply and signal output (without HART)
3 Ground terminal for connection of the cable screen
5.8

Switch-on phase

After connecting the instrument to power supply or after a voltage
recurrence, the instrument carries out a self-check for approx. 30 s:
•
Internal check of the electronics
•
Indication of the instrument type, hardware and software version,
measurement loop name on the display or PC
•
Indication of the status message "F 105 Determine measured
value" on the display or PC
•
The output signal jumps to the set fault current
As soon as a plausible measured value is found, the corresponding
current is outputted to the signal cable. The value corresponds to the
actual level as well as the settings already carried out, e.g. factory
setting.
SITRANS LG260 - Operating Instructions
I
4...20mA
+
1
2
( ) (-)
3
1
I I
4...20mA
+
7 8
( ) (-)
2
25