Area Of Applicability; General Information; Technical Data; Non-Intrinsically Safe Circuits - Vega TRENN 149A Ex Indicaciones De Seguridad

Safety instructions

1 Area of applicability

These safety instructions apply to the Ex separator VEGATRENN 149A Ex according to the EC type
approval certificate PTB 00 ATEX 2061 with 2nd supplement (certification number on the type label).

2 General information

The Ex separator VEGATRENN 149A Ex is an electrical associated apparatus that serves as power
supply for intrinsically safe 4 ... 20 mA/HART sensors. In addition, it ensures safe electrical
separation of the intrinsically safe circuit from the non-intrinsically safe circuit. The sensor signal
current is transmitted linearly to the output.
If the VEGATRENN 149A Ex is used for power supply of intrinsically safe sensors that are installed
and operated in hazardous areas, the general Ex mounting instructions EN 60079-14 as well as these
safety instructions have to be observed.
The operating instructions as well as the valid Ex mounting regulations and standards for electrical
equipment must be observed.
The installation of explosion-endangered systems must always be carried out by qualified personnel.

3 Technical data

The VEGATRENN 149A Ex includes non-intrinsically safe circuits and an intrinsically safe circuit.

3.1 Non-intrinsically safe circuits

Voltage supply (terminals +/-; L/N/PE)
Supply voltage
Output current (terminals O+H/O-; O+/O-)
Range
Reference voltage Um

3.2 Intrinsically safe circuit

Sensor input (terminals I+/I-)
Type of input
max. terminal voltage U
max. current I
O
max. power P
O
Characteristics curve
8
O
20 ... 250 V AC, 50/60 Hz, 20 ... 250 V DC
4 ... 20 mA
250 V AC
active (sensor is powered by VEGATRENN)
27.3 V
87.6 mA
597 mW
linear
VEGATRENN 149A Ex