VEGA VEGATRENN 547 V Ex - Manual (Page 5)

VEGATRENN 547 V Ex 5
Product description
1.2 Technical data
Power supply
Operating voltage U
nom
= 24 V AC (20 … 53 V), 50/60 Hz
= 24 V DC (20 … 72 V)
Power consumption approx. 13 W, approx. 18 VA
Fuse 1 A, slow-blow
Signal conditioning instrument circuit
For connection to signal conditioning instrument VEGAMET 514 V,
515 V or
EV-card of VEGALOG 571
Input voltage U
nom
= 25 V DC with VEGAMET
= 24 V DC with EV-card VEGALOG
The signal conditioning instrument circuit must only be connected to instruments with an
operating voltage less than 250 V.
Sensor circuit
Number 2 sensor circuits (both 2 ib-circuits)
Sensors Ultrasonic sensors
VEGASON 83 … 87 FV/GV Ex or Ex0,
radar sensors VEGAPULS 81 F/D Ex or Ex0
Voltage approx. 17 V DC at 85 mA
Current limitation electronically at approx. 85 mA, shortcircuit-proof
Connection line per sensor 4-wire (standard line) * )
Resistance per conductor max. 7,5
Ω
Line length max. 500 m
Sensor circuits, Ex-technical data
Classification [EEx ib] IIB
Max. values (per sensor circuit)
- voltage
U
O
≤
20,05 V
- current I
O
≤
103 mA
- eff
iciency
P
O
≤
2,05 W
Characteristics linear
Max. permissible outer inductance L
a
0,7 mH
Max. permissible outer capacitance C
a
296 nF
The intrinsically safe sensor current circuits are reliably galvanically isolated from the not
intrinsically safe circuits and supply up to a peak value of the nominal voltage of 375 V.
Indicating elements
LED in front plate green on: operating voltage on
* ) screened cable is recommended for electromagnetic interferences.