29
5 Connecting to power supply
VEGAPULS 66 • 4 … 20 mA/HART - two-wire
28438-EN-170927
1
1
2
Fig. 27: Wiring plan, Ex-d-ia double chamber housing
1 Voltage supply, signal output
5.6 Wiring plan - version IP 66/IP 68, 1 bar
1
2
Fig. 28: Wire assignment, connection cable
1 Brown (+) and blue (-) to power supply or to the processing system
2 Shielding
5.7 Switch-on phase
After connecting VEGAPULS 66 to power supply or after a voltage
recurrence, the instrument carries out a self-check for approx. 30
seconds:
•
Internal check of the electronics
•
Indication of the instrument type, the firmware as well as the sen-
sor TAGs (sensor designation)
•
Output signal jumps briefly (approx. 10 seconds) to the set fault
current
Then the corresponding current is outputted to the cable (the value
corresponds to the actual level as well as the settings already carried
out, e.g. factory setting).
Wiring plan
Wire assignment, con-
nection cable
Switch-on phase
