Goodrive3000 series medium voltage VFD
PROFIBUS communication
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9 PROFIBUS communication
9.1 PROFIBUS introduction
(1) PROFIBUS is an international open fieldbus standard that can implement data exchange between various automation
components. It is widely applicable to automation in various industries, such as the manufacturing, process, building,
transportation, and power industries. It provides effective solutions for implementing integrated automation and
intelligentization of field devices.
(2) PROFIBUS consists of three mutually compatible components, namely PROFIBUS-Decentralised Peripherals (DP),
PROFIBUS-Process Automation (PA), and PROFIBUS-Fieldbus Message Specification (FMS). It adopts the master/slave
mode and is generally used for periodic data exchange between VFD devices.
(3) The transmission media of a PROFIBUS field bus are twisted pairs (complying with the RS-485 standard), paired
cables, or optical cables. The baud rate ranges from 9.6kbit/s to 12Mbit/s. The maximum length of a fieldbus cable must
be within the range of 100 meters to 1200 meters, and the specific length depends on the selected transmission rate (see
the chapter of "Technical Data"). A maximum of 31 nodes can be connected to one PROFIBUS network segment when no
repeater is used. If repeaters are used, a maximum of 127 nodes (including the repeaters and master nodes) can be
connected.
(4) In PROFIBUS communication, tokens are transmitted between master nodes or by master nodes to slave nodes.
Single-master or multi-master systems are supported. The node to respond to the command of a master is selected by the
master node, generally a programmable logic controller (PLC). For cyclic master/slave user data transmission and
non-cyclic master-master data transmission, a master can also transmit commands to multiple nodes in broadcast mode.
When the broadcast mode is adopted, the nodes do not need to transmit feedback signals to the master. On PROFIBUS
networks, nodes cannot communicate with each other.
(5) The PROFIBUS protocol is described in details in the EN50170 standard. For details, refer to the EN50170 standard.
9.2 PROFIBUS-DP communication card
EC-TX103 communication card is an optional device to VFD which makes VFD connected to PROFIBUS network. In
PROFIBUSN network, VFD is a subsidiary device. The following functions can be completed with EC-TX103
communication card:
Send control commands to the VFD (start, stop, fault reset, etc.).
Send speed or given torque signal to the VFD.
Read state and actual values from the VFD.
Modify VFD parameter value.
For commands supported by the VFD, see VFD operation manual.
Note:
1.
EC-TX103 communication card is compatible with all Goodrive3000 series VFD models and VFDs that
support PROFIBUS expansion.
2.
EC-TX103 communication card is compatible with all master nodes that support PROFIBUS-DP.
9.2.1 Naming rule
Communication card model:
EC
–
TX 1 03
①
②
③
④