VEGA VEGATOR 536 Ex - Manual (Page 8)

8 VEGATOR 536 Ex
Electrical connection
3 Electrical connection
Danger
Please switch off the power supply before
starting connection. Connect mains voltage
according to the following diagram.
When connecting to the supply voltage or
reconnecting the sensor, the instrument
passes a function test. See also 5.1 Recur-
ring test acc. to WHG.
In addition, two transistor outputs are avail-
able switching synchronously with the relays.
Reset of alarm functions
Sensor 1
1 2 3
2
4
6
8
12
20
28
24
22
10
14
16
18
30
32
d b z
26 Ex-separat-
ing chamber
Sensor
channel 1
Module with multipoint connector acc. to
DIN 41 612 for carrier (rear view)
You can use the fail safe relay of VEGATOR
536 Ex as second level relay for a signaller
(horn etc.). To deactivate the connected
signaller (horn, lamp etc.) in case of a level
alarm (e.g. reaching of the max. permissible
level), an additional key (opener) can be
connected to VEGATOR 536 Ex. This key can
deactivate a level alarm. In case of failure
(e.g. line break), the alarm is not deleted.
When the key is connected, the fail safe relay
has the same function as the level relay, how-
ever the fail safe relay can be reset by
pressing the key for reset of alarm functions.
When, on reaching the max. level, e.g. an
acoustic warning system is activated, this
can be switched off by pressing the key for
reset of alarm functions. The second output
(level relay) still signals the reaching of the
max. level to the processing system.
Note
If very strong electromagnetic interferences
are expected, we recommend the use of
screened cable. The screening of the cable
must only be earthed on one sensor end. The
following connection plans show the
currentless condition.