VEGA VEGATRENN 546 Safety barrier type 146 - Manual (Page 7)

Safety barrier type 146, VEGATRENN 546 7
2
28
24
22
30
32
d b z
+
–
6
10
12
20
16
18
4
8
14
26
+
–
+
–
Electrical connection
3 Electrical connection
3.1 Erection instructions
Please observe the following instructions for erection:
- Parts of the measuring system are subjected to the
special conditions and information in the conformity
certificates (the respective conformity certificates
are attached to the instruments).
- VEGATRENN 546 must be erected such that a
protection of at leat IP 20 acc. to IEC 144 (529) is
reached. Due to respective installation in a carrier
BGT 596 Ex of VEGA and respective installation of
the carrier, the requirement is met.
- Between the connection parts of intrinsically safe
and not-intrinsically safe circuits a separation wall
must be provided, so that a min. distance of 50 mm
is ensured. By using module type 596 Ex of VEGA
this requirement is met.
- If VEGALOG 571 with EV-input card is used as
signal conditioning instrument, max. 5 safety
barriers can be connected.
- Safety barrier and signal conditioning instrument
must only be used outside hazardous areas.
- Only one sensor must be connected to each safety
barrier.
In addition the respectively valid errection and
operating regulations must be observed. E.g. the
DIN/VDE-regulations prescribe that the connection
lines between safety barrier and sensor must be
permanently marked along their entire length. If
covers are coloured, light-blue must be used.
3.2 Wiring instruction
The not intrinsically safe input of the safety barrier is
connected via a standard two-wire line to the signal
conditioning instrument. If electromagnetic
interferences have to be expected, screened cable
should be used. The screen should only be earthed at
one end of the signal conditioning instrument.
The wiring of the intrinsically safe outputs of the safety
barrier with radar or pulse-echo sensors (in hazardous
areas) must be carried out acc. to the valid erection
regulations. Furthermore the special conditions and
information in the conformity certificates must be
observed.
3.3 Wiring plan
Safety barrier type 146
Screw terminals
VEGATRENN 546
Multipoint plug
–
12
+
11
Ex
OUT 2
+
3
–
4
OUT 1
+
1
–
2
IN
+
11
–
12
+
1
–
2
+
3
–
4
+
–
+
–
+
–
not intrinsically safe input circuit
(from signal conditioning
instrument)
intrinsically safe output circuit 1
(to the sensor)
intrinsically safe output circuit 2
(to the sensor)
not intrinsically safe input circuit
(from signal conditioning
instrument)
intrinsically safe output circuit 1
(to the sensor)
intrinsically safe output circuit 2
(to the sensor)