Vega Remote parameter adjustment and remote maintenance User Manual download pdf (Page 3)

2 Connection plics® sensor

With

this version, connection of VEGACONNECT 3 is carried out via

the I²C interface integrated in the sensor. This is the easiest and

fastest way to make a connection. The housing cover of the sensor

cannot be closed when VEGACONNECT 3 is connected.

Note:

Use this conne

ction variant only if the connection is to be short-term, in

a dry environment and not in an Ex-area.

Fig. 2: Connection

plics

series via I²C interface

1 Analogue telephone connection (not applicable in case of GSM radio

modem)

2 Standard analogue modem or GSM radio modem

3 Special cable, art. no.: MODEM.KX

4 VEGACONNECT 3

5 I²C adapter (in the scope of delivery of VEGACONNECT 3)

6 Sensor from the plics® serie

With this version, connection of VEGACONNECT 3 is carried out via

the HART protocol and the supply cable of the sensor. Hence, the

connection can be made at any point between power supply/

processing system and sensor.

This version can also be used for connection in Ex

-areas. The modem

and VEGACONNECT 3 themselves must not be located in Ex-area.

If the resistance of the connected processing system is less than

230 Ω, the digital adjustment signal is extremely damped or short-

circuited. Digital communication with the PC is then no longer possible.

With low impedance processing systems, a resistance of approx.

230 Ω must be integrated into the 4 … 20 mA connection cable. The

connection can be either carried out in parallel to the sensor or via the

resistor.

Connection to the sen-

sor (I²C)

Connection to cable

(HART)

Remote parameter adjustment and remote maintenance • Conﬁguration and

connection 3

2 Connection plics® sensor

23051-EN-090302

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Vega Remote parameter adjustment and remote maintenance User Manual Page 3