Levelflex M FMP 40 with Foundation Fieldbus
4 Wiring
Hauser
31
4.4
Recommended connection
For maximum EMC protection please observe the following points:
•
The external ground terminal (1) on the transmitter must be connected to ground.
•
The continuity of the cable screening between tapping points must be ensured.
•
If potential equalisation is present between the individual grounding points, ground
the screening at each cable end or connect it to the device housing (as short as pos-
sible).
•
If there are large differences in potential between grounding points, the grounding
should run via a capacitor that is suitable for high frequency use (e.g. ceramic 10 nF/
250 V~).
"
Caution!
Applications, which are subject to the explosion prevention, permit only under special
conditions the repeated grounding of the protective screen , see to EN 60 079-14..
4.5
Post-connection check
After wiring the measuring instrument, perform the following checks:
•
Is the terminal allocation correct (see page 29 ff. and page 30)?
•
Is the cable gland tight?
•
Is the Fieldbus connector screwed tight?
•
Is the housing cover screwed tight?
•
If auxiliary power is available:
Is the instrument ready for operation and does the liquid crystal display show any
value?
1
F12 housing
