Endress+Hauser Gammapilot M FMG60 - Potential equalization

Gammapilot M FMG60 with FOUNDATION Fieldbus Wiring
Endress+Hauser 25
4.5 Foundation Fieldbus cable specifications
Twisted, shielded pairs must be used. The cable specifications can be taken from the FF specification
or IEC 61158-2. The following cable types can be used, for example:
Non-Ex-area:
• Siemens 6XV1 830-5BH10,
• Belden 3076F,
• Kerpen CEL-PE/OSCR/PVC/FRLA FB-02YS(ST)YFL.
Ex-area:
• Siemens 6XV1 830-5AH10,
• Belden 3076F,
• Kerpen CEL-PE/OSCR/PVC/FRLA FB-02YS(ST)YFL.
4.6 Foundation Fieldbus terminal voltage
The following values are the voltages across the terminals directly at the device:
Approx. 11 mA for the range of voltages given above.
4.7 Potential equalization
"
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.
Type Minimum
terminal voltage
Maximum
terminal voltage
standard 9 V 32 V
EEx ia (FISCO model) 9 V 17.5 V
EEx ia (Entity concept) 9 V 24 V
For maximum EMC protection please observe
the following points:
• The external ground terminal on the
transmitter must be connected to ground.
The cable should be kept as short as possible
for optimum electromagnetic compatibility.
The use of a grounding strip is ideal.
• The continuity of the cable shielding between
tapping points must be ensured.
• If potential equalization is present between
the individual grounding points, ground the
shielding at each cable end or connect it to the
device housing (as short as possible).
• 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&).
L00-FMG60xxx-04-00-00-xx-004
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