VEGA VEGATRENN 546 Safety barrier type 146 - Manual (Page 3)

Safety barrier type 146, VEGATRENN 546 3
Product description
1 Product description
1.1 Function and configuration
The safety barrier type 146 as well as VEGATRENN
546 are used for intrinsically safe, galvanically
separated supply and for signal transmission for the
following VBUS-sensors
- VEGASON 8. FV Ex / Ex0
- VEGAPULS 64 .V Ex / Ex0.
For this purpose the not-intrinsically safe circuit of the
respective VBUS-signal conditioning instrument is
converted into two intrinsically safe ib-circuits..
The above mentioned sensors can be connected to
the following signal conditioning instruments via safety
barrier type 146 or VEGATRENN 546
- VEGAMET 407 V, 509 V, 514 V and 515 V
- EV-card of VEGALOG 571
1.2 Types
The function of both types is identical, only the
mechanical configuration and the electrical
connection are different.
Safety barrier type 146
The electronics is located in a plastic housing. On the
front side on top there are two screw terminals for the
input and on bottom four screw terminals for the
outputs. The intrinsically safe output circuits are
marked blue on the type plate. On the back of the
instrument an adapter for snap-in fastening on carrier
rail 35 x 7,5 mm (C-profile) acc. to EN 50 022 is
located.
VEGATRENN 546
A complete safety barrier type 146 is mounted on a
19"-module card in European size. The connection is
made via a multipoint plug DIN 41 612. VEGATRENN
546 is provided for use in a 19"-carrier type 596 Ex on
a respectively equipped Ex-module or in a plastic
housing type 589-10 Ex.
not-intrinsically safe
circuit to the signal
conditioning
instrument
ib-circuit to the
sensor
ib-circuit to the
sensor
Fig. 1.1 Block diagram
The safety barriers provide the galvanic separation
between:
- the not-intrinsically safe circuits and the intrinsically
safe circuits
- among the intrinsically safe circuits.
The power required for operation is taken from the
signal circuit of the respective signal conditioning
instrument, a separate external energy is not
necessary.