SI-EtherCAT User Guide
7
Issue Number: 2
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2
Introduction
2.1
Products covered by this User Guide
This User Guide covers the SI-EtherCAT option module .Both the SI-Ethernet module and the
onboard Ethernet interface offer the same functionality.
The SI-EtherCAT is an option module that provides EtherCAT connectivity and can be installed to
the following drives:
•
Unidrive M200 / M201 (sizes 2 to 9)
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Unidrive M300 (sizes 2 to 9)
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Unidrive M400 (sizes 2 to 9)
•
Unidrive M600 (sizes 3 to 11)
•
Unidrive M700 / M701 / M702 (sizes 3 to 11)
2.2
What is EtherCAT?
EtherCAT is an open high performance Ethernet-based fieldbus system that overcomes the system
limitations of other Ethernet solutions. The Ethernet packet is no longer received, then interpreted
and copied as process data at every connection; instead the Ethernet frame is processed on the fly.
The development goal of EtherCAT was to apply Ethernet to automation applications that require
short data update times (also called cycle times) with low communication jitter (for synchronization
purposes) and low hardware costs. Typical application fields for EtherCAT are machine controls
(e.g. semiconductor tools, metal forming, packaging, injection moulding, assembly systems,
printing machines, robotics and many others).
2.3
About SI-EtherCAT
SI-EtherCAT is a option module that enables the Control Techniques Unidrive M range of variable
speed drives to be connected to an EtherCAT network as a slave device. It can be used in a variety
of applications, from those requiring accurate synchronization and precise motion control, to those
where ease of use and open loop control are appropriate.
2.4
Features
•
Standard RJ45 with support for shielded twisted pair, half-duplex / full-duplex and 10 Mbs / 100
Mbs connectivity
•
Dual 100 Mbps EtherCAT interfaces for use in line topologies i.e. daisy chaining
•
Supports the Unidrive M drives range
•
Control loop synchronization
•
Control cycle times down to 250 µs
•
Configured Station Alias
•
CANopen over EtherCAT (CoE) which includes:
•
Support of CANopen CiA402
•
Cyclic sync position mode
•
Interpolated position mode
•
Velocity mode
•
Homing mode
•
One transmit and one receive PDOs
•
SDO access to all profile objects and drive parameters
•
Cyclic sync velocity mode
•
Cyclic sync torque mode
Summary of Contents for SI-EtherCAT
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