Endress+Hauser Proline Promass A 100, Руководство по эксплуатации

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Electrical connection Proline Promass A 100
28 Hauser
EtherNet/IP
EtherNet/IP (on the device side)
3
2
4
1
A0016812
Pin Assignment Coding Plug/
socket
1 + Tx D Socket
2 + Rx
3 - Tx
4 - Rx
7.1.5 Shielding and grounding
The shielding and grounding concept requires compliance with the following:
• Electromagnetic compatibility (EMC)
• Explosion protection
• Personal protection equipment
• National installation regulations and guidelines
• Observe cable specification (→  23).
• Keep the stripped and twisted lengths of cable shield to the ground terminal as short
as possible.
• Seamless cable shielding.
Grounding of the cable shield
To comply with EMC requirements:
• Ensure the cable shield is grounded to the potential matching line at multiple points.
• Connect every local ground terminal to the potential matching line.
NOTICE
In systems without potential matching, the multiple grounding of the cable shield
causes mains frequency equalizing currents!
Damage to the bus cable shield.
‣
Only ground the bus cable shield to either the local ground or the protective ground
at one end.
Optimum electromagnetic compatibility (EMC) of the fieldbus system can only be
guaranteed if the system components and, in particular, the lines are shielded and the
shield forms as complete a cover as possible. A shield coverage of 90% is ideal.
• To ensure an optimum EMC protective effect, connect the shield as often as possible
to the reference ground.
• For reasons of explosion protection, you should refrain from grounding however.