Endress+Hauser RID16 Bedienungsanleitung Seite 37

RID16
Always use cable glands with good EMC properties, where possible with wrapround cable
shielding (Iris spring). This requires minimum differences in potential, and possibly potential
equalization.
• The shielding of the PA cable may not be interrupted.
• The shielding connection must always be kept as short as possible.
Ideally cable glands with Iris springs should be used to connect the shield. The Iris spring, which
is located inside the gland, connects the shield to the T-box housing. The shielding braid is
located under the Iris spring.
When the armored thread is screwed tight, the Iris spring is pressed against the shield, thereby
establishing a conductive connection between the shield and the metal housing.
A junction box or a plug-in connection must be considered part of the shielding (Faraday shield).
This applies in particular to remote boxes if such boxes are connected to a PROFIBUS® PA device
via a plug-in cable. In such cases, you must use a metal connector where the cable shielding is
connected to the connector housing (e.g. pre-terminated cables).
Abb. 9: Connectors for connection to the PROFIBUS® PA fieldbus
A Fieldbus connector
B Field indicator
C Connector on the housing (male)
Technical data for connector:
• IP 67 degree of protection (NEMA 4x)
• Ambient temperature range: –40 to +105 °C (–40 to +221 °F)
Endress+Hauser
D 7/8" connector
1 Brown wire: PA+ (terminal 1)
2 Green-yellow wire: grounding
3 Blue wire: PA- (terminal 2)
4 Gray wire: shielding
5 Positioning key
Pin assignment / color codes
D M12 connector
1 Gray wire: shielding
2 Brown wire: PA+ (terminal 1)
3 Blue wire: PA- (terminal 2)
4 Green-yellow wire: grounding
5 Positioning key
Wiring
A0021545
37