BERTHOLD TECHNOLOGIES Uni-Probe LB 490 - Uni-Probe with Intrinsically Safe Signal Output Profibus PA; FOUNDATION

Uni-Probe LB 490
BERTHOLD TECHNOLOGIES GmbH & Co. KG
2 – 209
Volume 2 3 Electrical Installation
2
3.7 Uni-Probe with Intrinsically Safe Signal
Output Profibus PA / FOUNDATION
™
Fieldbus
The following special information is valid for the devices:
•ProfibusPA
– LB 490 Uni-Probe ID no. 50040-XXX
– LB 490 Super-Sens ID no. 53214-057 … -064
– LB 490 Tower-Sens ID no. 50250-057 … -064
•FOUNDATION
™
Fieldbus
– LB 490 Uni-Probe ID no. 50041-XXX
– LB 490 Super-Sens ID no. 53214-033
… -040
– LB 490 Tower-Sens ID no. 50250-033 … -040
3.7.1 Design
Uni-Probe
The Uni-Probe version with intrinsically safe current output is
equipped with a pre-assembled cable for the current output as
standard. The cable has a length of 20 m. The cable has to be con-
nected in accordance with the valid installation regulations.
The cable ends are prepared and numbered.
Figure 3-13 Uni-Probeconnection cable
Terminal box Ex i for cable extension
If 20 m cable are not enough to reach the next distribution cabinet,
you may use an intrinsically safe terminal box (ID no. 49546) to
extend the cable. See also "3.5.3 Terminal Box" on page 2–198.
Wire 1 (+)
Wire 2 ()
Wire 3 (S) Screen