ABB AC 800M User Manual page 82

Shielding and data line connection
The capacitor shall have the following requirements:
•
•
•
For PROFIBUS PA only shielded wires should be used. The shield should be
hard-grounded at the Linking Device or the power link module and on all field
devices. For intrinsically safe applications a potential compensation between the
safe and hazardous areas is required.
If there is no potential compensation between the safe and hazardous areas, there
is a possibility of capacitive grounding on the LD 800P Linking Device/Power
Link Module.
82
solid dielectricum (for example ceramic)
C < 10 nF
isolation voltage > 1,5 kV
PROFIBUS PA
-
+
PROFIBUS DP
Section 3 Fieldbus Topologies
-
+
Field device
Power Link Module
PL 810 or PL 890
Shield/FE
- DC 24 V
+ DC 24 V
3BDS009029R5001 B