Goodrive3000 series medium voltage VFD PROFIBUS communication
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9 PROFIBUS communication
9.1 PROFIBUS introduction
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 helps provide effective solutions
for implementing integrated automation and intelligentization of field equipment.
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.
The transmission media of a PROFIBUS fieldbus system are twisted pairs (complying with the RS485
standard), two-wire cables, or optical cables. The baud rate ranges from 9.6 kbit/s to 12 Mbit/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. When no repeaters are used, a maximum of
31 nodes can be connected to one PROFIBUS network segment. When repeaters are used, a maximum
of 127 nodes (including the repeaters and master nodes) can be connected.
In PROFIBUS communication, tokens are transmitted between master nodes or from master nodes to
slave nodes. Single- or multi-master systems are supported. Which node responds to the command of a
master node 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 node 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 node. On PROFIBUS networks, slave
nodes cannot communicate with each other.
The PROFIBUS protocol is described in details in the EN50170 standard. For more information about
PROFIBUS, see the EN50170 standard.
9.2 PROFIBUS-DP communication card
The PROFIBUS-DP communication card we provide, that is, EC-TX103 communication card, is an
optional part of the VFD. The VFD can be connected to a PROFIBUS network by using the
communication card. Then the VFD becomes a slave node on the network. The communication card can:
Send control commands (such as start, stop, and fault reset commands) to the VFD.
Send speed or torque reference signals to the VFD.
Read status values and actual values from the VFD.
Modify VFD parameters.
Note:
EC-TX103 communication card is compatible with all Goodrive3000 series VFD models and VFDs that
support PROFIBUS expansion.
EC-TX103 communication card is compatible with all master nodes that support PROFIBUS-DP.
9.2.1 Communication card model designation
Communication card model:
Содержание GD3000-01-055G-12
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