4 switch on phase – VEGA VEGAPULS 66 (≥ 2.0.0 - ≤ 3.8) 4 … 20 mA_HART four-wire User Manual
Page 26
Information:
K
eep in mind that the indicating and adjustment module must only be
used in the electronics compartment.
4 ... 20 mA
PE
/ L
/ N
L1 N
GND
1
2
1
2
3
4
4...20mA
IS
Fig. 20: Wiring plan, double chamber housing
1
Power supply
2
Signal output
5.4 Switch on phase
A
fter connecting VEGAPULS 66 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
Switch on phase
26
VEGAPULS
66 • 4 … 20
mA/HART four-wire
5 C
onnecting to power supply
28443
-EN
-090305