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Barcon LHC/PPC (HART)
Installation
Cable connection
18
2.5
Electrical connection
Transposed, screened two-wire cabling is recommended for the connecting cable.
Max. wire diameter: 2.5 mm
The power supply voltage is:
•
Non-Ex: 11.5 V... 45 V DC
•
Ex i area: 11.5 V ... 30 V DC
Internal protection circuits against reverse polarity, HF interference and overvoltage
peaks.
A test signal can be measured using the terminal plugs for this purpose without
interrupting measurement.
•
Unscrew the cover
•
If present, remove the retainer ring with digital display. In addition:
- Push up the latch with the arrow until the grip of the retaining ring is
audibly released.
- Loosen the retainer ring carefully to prevent the display cable from
breaking. The plug of the display can remain plugged in.
•
Insert the cable through the cable entry
•
Connect the cable wires as shown in the connection diagram.
•
Where appropriate, replace the retainer ring with digital display.The grip of
the retainer ring clips in with an audible click.
•
Screw down the cover
To loosen the holder from the electronic
insert, push latch with arrow upwards.
Fig.2.11:
Lifting off the display and removing the retaining ring
Observe all local regulations for applications in the EEx i area!
Fig.2.12:
Graph showing load
2
permanently attached cable
R/Ω
1522
1000
840
500
0
11.5
20
30
45
U/V
Standard
EEx ia IIC T6
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