VEGA VEGAVIB 31-53 - Manual (Page 16)

16 VEGAVIB
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Electrical connection
3 Electrical connection
3.1 Connection instructions
VEGAVIB
Note
Switch off power supply before starting connec-
tion work.
The electrical connection must be carried out
according to the installed oscillator. Connect
supply voltage according to the wiring diagrams
on the following pages.
As a rule, connect VEGAVIB to vessel ground
(PA) or in plastic vessels, to nearest ground
potential. For this purpose, a thread (screw M4 x
5) is provided on the side on the hexagon of the
mounting boss. This connection serves to drain
off electrostatic charges.
In dust-Ex applications or applications acc. to
CENELEC, the PA terminal (on the hexagon of
the mounting boss) must be connected to the
potential equalisation line.
3.2 Wiring plan VEGAVIB
Non-contact electronic switch
(VIB E40 C, E50 C)
1 Housing cover
2 Signal lamp (LED)
3 Terminals
4 A/B switch
5 Potentiometer
6 Instrument housing
7 Cable entry (Pg 13.5)
8 Oscillator
9 Type label oscillator
Power supply:
20 … 250 V AC, 50/60 Hz; 20 … 250 V DC (for
further information see Technical data)
For direct control of relays, contactors, magnet
valves, warning lights, horns, etc. Instrument
must not be operated without connected load
(switching in series), as the oscillator can be
destroyed when connected directly to mains.
Not suitable for connection to low voltage PLC
inputs.
The domestic current is temporarily lowered
below 1 mA after switching off the load so that
the contactors, whose load current is less than
the permanently flowing domestic current of the
electronics, are reliably switched off.
1 2 3
AC L1 N Vessel ground
DC + –
or
DC
– +