VEGA VEGAWELL 72 4 … 20 mA_HART - Manual (Page 19)

connected directly to the internal ground terminal. The ground
terminal outside on the housing must be connected to the
potential equalisation.
I f potential equalisation currents are expected, the connection
on the processing side must be made via a ceramic capacitor
(
e. g. 1 nF, 1500 V). The low frequency potential equalisation
currents are thus suppressed, but the protective effect against
high frequency interference signals remains.
T
ake note of the corresponding installation regulations for Ex
applications.
5 .2 Connection procedure
P
roceed as follows:
1 W ire the connection cable up to the connection compart-
ment. The bending radius must be at least 25 mm. 3)
2 C onnect the wire ends to the screw terminals according to
the wiring plan
P
roceed as follows:
1 S nap connection housing onto the carrier rail or screw it to
the mounting plate
2 L
oosen the cover screws and remove the cover
3 L ead the cable through the cable gland into the connection
housing
4 L
oosen the screws with a screwdriver
5 I
nsert the wire ends into the open terminals according to
the wiring plan
6 T
ighten the screws with a screwdriver
7 C
heck the hold of the wires in the terminals by lightly
pulling on them
8 T ighten the compression nut of the cable entry. The seal
ring must completely encircle the cable
9 C onnect the supply cable according to steps 3 to 8
10 S crew the housing cover on
T he electrical connection is finished.
P
roceed as follows:
3) T he connection cable is already preconfectioned. After shortening the ca-
ble, fasten the type plate with support again to the cable.
Select connec-
tion cable for Ex
applications
Direct connection
Via VEGABOX 02 or VE-
GADIS 12
Via the housing
VEGAWELL 72 • 4 … 20 mA/HART 19
5 C onnecting to power supply
27630
-
EN
-080806