Goodrive3000 series medium voltage VFD
PROFIBUS communication
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optical fiber conductors to increase the high-speed transmission distance. Two types of optical fiber conductors can be
used. One is low-cost plastic fiber conductors that can be used when the transmission distance is shorter than 50 meters;
and the other is glass fiber conductors that can be used when the transmission distance is shorter than 1 kilometer.
PROFIBUS bus connection diagram
A B GND
PROFIBUS
master node
A B SHLD
EC-TX-103
VFD
A B SHLD
EC-TX-103
VFD
Figure 9-1 Standard PROFIBUS connection
Figure 9-1 shows the terminal wiring. The cables are standard PROFIBUS cables, each consisting of a twisted pair and
shield layer. The shield layers of PROFIBUS cables are directly grounded on all nodes. You can select a proper grounding
mode based on the actual situation on site.
Wiring precautions:
When connecting the nodes, ensure that the data cables are not twisted. For systems to be used in
environments with strong electromagnetic radiation, you need to use cables with shield layers to improve
electromagnetic compatibility (EMC).
If the shielded braided or shielded foiled cable is used, connect the two ends of it to the protective ground
and use the 360-degree reliable grounding to ensure high conductivity. In addition, data cables need to be
separated from high-voltage cables.
When the data transmission rate is higher than 500 kbit/s, do not use short stubs, but use the plugs
available in the market to connect the data input and output cables. In addition, the DB9 plug to the
communication card can be connected or disconnected at any time without interrupting data
communication of other nodes.
9.3.3 System configuration
1. System setup
Master station and VFD should be configured so that the master station can communicate with the communication card
after correctly installing EC-TX103 communication card.
Each PROFIBUS subsidiary station on the PROFIBUS bus need to have "device description document" named GSD file
which used to describe the characteristics of PROFIBUS-DP devices. GSD file contains all defined parameters, including
the supported baud rate, information length, amount of input/output data, meaning of diagnostic data.
You can download the GSD file of EC-TX103 communication card from our website to the corresponding subdirectory on
the configuration tool software. For specific operations and PROFIBUS system configuration, please refer to relevant
system configuration software instructions.
Parameter
number
Parameter
name
Optional
setting
Default
Remarks
0
Module type Read only
PROFIBUS-DP
This parameter shows communication
module type detected by VFD; users can
not adjust this parameter. If this parameter
