VEGA VEGAPULS 68 (≥ 2.0.0 - ≤ 3.8) 4 … 20 mA_HART two-wire - Manual (Page 35)

1
1 2
Fig. 31: Wiring plan double chamber housing Ex d
1 Voltage supply/Signal output
5.6 Wiring plan - version IP 66/IP 68, 1 bar
+
-
1
2
Fig. 32: Wire assignment, connection cable
1 brown (+) and blue (-) to power supply or to the processing system
2 Shielding
5.7 Switch on phase
A fter connecting VEGAPULS 68 to power supply or after a voltage
recurrence, the instrument carries out a self-check for approx. 30
seconds:
l I nternal check of the electronics
l I ndication of the instrument type, the firmware as well as the
sensor TAGs (sensor designation)
l O utput signal jumps briefly (approx. 10 seconds) to the set fault
current
T hen 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
VEGAPULS 68 • 4 … 20 mA/HART two-wire 35
5 C onnecting to power supply
29261
-EN
-090305