7 switch on phase – VEGA VEGAPULS 66 (≥ 2.0.0 - ≤ 3.8) standpipe ver. Profibus PA User Manual

Page 24

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background image

1

1

2

Fig. 18: Wiring plan double chamber housing Ex d

1

Voltage supply/Signal output

5.6 Wiring plan - version IP 66/IP 68, 1 bar

+

-

1

2

Fig. 19: Wire assignment, connection cable

1

brown (+) and blue (-) to power supply or to the processing system

2

Shielding

5.7 Switch on phase

After VEGAPULS 66 is connected to voltage supply or after voltage
recurrence, the instrument carries out a self-check for approx. 30
seconds. The following steps are carried out:

l

Internal check of the electronics

l

Indication of the instrument type, the firmware as well as the
sensor TAGs (sensor designation)

l

Status byte goes briefly to fault value

Then the current measured value will be displayed and the
corresponding digital output signal will be outputted to the cable.

1)

1)

The values correspond to the actual measured level as well as to the set-
tings already carried out, e.g. default setting.

Wiring plan

Wire assignment, con-
nection cable

Switch on phase

24

VEGAPULS

66 standpipe version • Profibus PA

5 Connecting to power supply

28743

-EN

-090305

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