Connection Procedure; Wiring Plan - Vega VEGAMET 381 Ex Instrucción De Servicio

Select connection cable for Ex applications
Take note of the corresponding installation
regulations for Ex applications. In particular,
make sure that no potential equalisation
currents flow over the cable screen. In case
of grounding on both sides this can be
achieved by the use of a capacitor or a
separate potential equalisation.

5.2 Connection procedure

Proceed as follows:
1 Mount VEGAMET 381 Ex
2 Connect sensor cable to terminal 1 and 2, and
where applicable, connect the screen
3 Connect power supply (switched off) to termi-
nal 5 and 6
4 If necessary, connect fail safe and operating
relay as well as current output
The electrical connection is finished.
After connection, it is absolutely necessary
to plug the blue Ex separating chamber to
terminals 1 and 2 (sensor input). This
ensures the required distance of at least
50 mm (1.97 in) to other instruments.
1 Place the Ex separating chamber as shown
below on the terminals of the sensor input
2 Lead the sensor cable towards the front and
out of the Ex separating chamber
3 Push the Ex separating chamber towards the
front until you hear it snap in
VEGAMET 381 Ex
Connecting to voltage supply

5.3 Wiring plan

Overview
+ -
1
1 2
1 2
18 17 16 15 14 13 12 11 10 9 8 7 6 5
3
Fig. 13: Terminal assignment VEGAMET 381 Ex
1 Meas. data input/sensor power supply with sockets
for VEGACONNECT
2 Current output
3 Fail safe relay
4 Relay 2
5 Relay 1
6 Voltage supply
+ -
2
3 4
1
2
on
%
N- L1+
4 5 6
23