Soft starters cut wiring times

22 November 2012

Savings in wiring time and costs are said to be benefits offered by new versions of the DS7 soft starters from Eaton’s electrical sector which feature built-in interfaces for the SmartWire-DT panel wiring system.

The SmartWire-DT panel wiring system negate the need for conventional control wiring, using instead plug-in connections that make wiring errors almost impossible.

The complete DS7 range, which covers power ratings from 1.5 kW to 110 kW at 400V, is available in versions that incorporate SmartWire-DT interfaces. In all cases, the SmartWire-DT connection allows start-stop control of the soft starter, provides the control supply, and allows read/write access to key operating parameters.

In addition, the soft starter can transmit diagnostic data and status messages via the SmartWire-DT connection, and this information can be accessed either by the control system or, without taking the soft starter out of service, by a laptop computer as an aid to commissioning and servicing.

All Eaton DS7 soft starters incorporate a patented asymmetrical trigger control technology which eliminates the dc components in the motor current that are produced by conventional two-phase controlled soft starters. This allows the motor to start more smoothly and with less vibration, and start-up times can be minimised.


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