31
5 Connecting to power supply
LBR • Two-wire 4 … 20 mA/HART
62273-EN-200520
5
1
2
+
( )
(-)
6 7 8
4...20mA
2
3
4
1
Fig. 28: Electronics and connection compartment - single chamber housing
1 Voltage supply, signal output
2 For display and adjustment module or interface adapter
3 For external display and adjustment unit
4 Ground terminal for connection of the cable screening
5.4 Switch-on phase
After connection of the device to power supply, the device first carries
out a self-test:
•
Internal check of the electronics
•
Indication of the status message "
F 105 Determine measured
value
" on the display or PC
•
The output signal jumps briefly to the set fault current
Then the actual measured value is output to the signal cable. The
value takes into account settings that have already been carried out,
e.g. default setting.
Electronics and connec-
tion compartment
