Variable speed starter now includes CANopen connectivity
30 January 2016
Eaton is expanding its range of PowerXL DE1 variable speed starters with the DE11. In addition to providing the Modbus interface as standard and the option for SmartWire DT, the new range also offers an option to directly connect to CANopen.
The variable speed starter is a new device category that Eaton recently introduced to the market. When it comes to requirements for minimum degrees of efficiency, such as for pump and fan applications, processes and equipment often require electronic variable speed control.
In many cases, however, variable frequency drives are often excessive in terms of their functionality and too complex to operate, while motor starters are easy to use but have limited functionality. The variable speed starter bridges this gap and combines the advantages of both devices.
Just like the DE1, the DE11 enables variable speed control for applications up to 7.5kW, and is similar to a contactor or motor starter with the option of ‘out-of-the-box’ operation without needing to set parameters. In the new DE11 configuration level, plug-in control terminals enable pre-assembly, which saves time and effort for mechanical engineers and control cabinet builders - straight from batch production.
The user can install the device either horizontally or vertically. Since the width of the device corresponds to a standard motor starter, it can generally be replaced directly. This also means that retrofitting projects will be straightforward.
Equipped with ‘trip-free design’, the variable speed starter provides the highest levels of availability. As well as these features, the device is able to detect regenerative energy recovery from motors and automatically monitor it; it has an automatic restart function, dc braking function, dc control in the event of imbalance, automatic switching frequency reduction at high load or at high ambient temperatures; internal motor and short-circuit protection and direct thermistor motor protection. The device is also ready for use without de-rating, at up to 60°C.
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