VEGA VEGABAR 51 Foundation Fieldbus - Manual (Page 25)

25
5 Connecting to power supply
VEGABAR 51 • Foundation Fieldbus
36715-EN-130321
I2C
Display
1
1 2 5 6 7 8
Fig. 21: Wiring plan external electronics
1 Voltage supply
5.8 Switch-on phase
After VEGABAR 51 is connected to voltage supply or after voltage
recurrence, the instrument carries out a self-check for approx. 30
seconds. The following steps are carried out:
•
Internal check of the electronics
•
Indication of the instrument type, the firmware as well as the sen-
sor TAGs (sensor designation)
•
Status byte goes briefly to fault value
Then the current measured value will be displayed and the corre-
sponding digital output signal will be outputted to the cable. 2)
Wiring plan external
electronics
Switch-on phase
2) The values correspond to the actual measured level as well as to the settings
already carried out, e.g. default setting.