Profibus Dp - WEG CFW-09 User Manual

8.12.2 Profibus DP

CHAPTER 8 - CFW-09 OPTIONS AND ACCESSORIES
Introduction
The inverter that is fitted with the Profibus DP Kit operates in slave mode,
allowing the reading/writing of their parameters through a master. The inverter
does not start the communication with other nodes, it only answers to the
master controls. A twisted pair of copper cable realizes the connection of the
Fieldbus (RS-485) allowing the data transmission at rates between 9.6 kbits/s
and 12 Mbits/s. Figure 8.39 show a general view of a Profibus DP network.
PROFIBUS DP
Master
Figure 8.39 - Profibus DP network
- Fieldbus Type: PROFIBUS DP EN 50170 (DIN 19245)
Physical Interface
- Transmission means: Profibus bus bar line, type A or B as specified in
EN50170.
- Topology: Master-Slave communication.
- Insulation: the bus is supplied by DC/DC inverter and isolated galvanically
from remaining electronics and the signals A and B are isolated by means
of optocouplers.
- It allows the connection/disconnection of only one node without affecting
the network.
Fieldbus connector of the inverter user
- Connector D-sub 9 pins - female.
- Pins:
Pin Name
1 Not connected
2 Not connected
3 B-Line
4 Not connected
5 GND
6 + 5 V
7 Not connected
8 A-Line
9 Not connected
Frame
Shield
Table 8.15 - Pin connection (DB9) to the Profibus DP
Personal
Computer with
RS-232
Configuration
Software
DP
PROFIBUS DP
slave node #1
PROFIBUS DP
slave node #2
Function
RxD/TxD positive, according to
specification RS-485
0 V isolated against RS-485 circuit
5 V isolated against RS-485 circuit
RxD/TxD negative, according to
specification RS-485
Connected to the ground protection (PE)
PROFIBUS DP
slave node #n
-
-
-
-
-
281