ABB NPBA-12 Installation And Startup Manual page 20

Chapter 4 – Electrical Installation
PROFIBUS Wiring
Examples
A
PROFIBUS
MASTER
GND
B
PROFIBUS
MASTER
GND
Figure 4-3 Connection diagram for the standard PROFIBUS cable. Only connection (B) enables the
removal of the intermediate module without disturbing the bus.
4-4
The PROFIBUS cable shield may be directly earthed at one station
only. At other stations the cable shield should be earthed via an
RC filter.
There are two wiring examples below for standard PROFIBUS cable
consisting of a twisted pair and screen.
A
B
A
B
NPBA-12
A B A B
X1 1 2 3 4
X2
5 6 7 8
NPBA-12
A B A B
X1 1 2 3 4
X2
5 6 7 8
NPBA-12 Installation and Start-up Guide
NPBA-12
A B A B
X1
1 2 3 4
X2
5 6 7 8
NPBA-12
A B A B
X1
1 2 3 4
X2
5 6 7 8