Eaton Corporation announces the availability of the DS6 line of reduced-voltage, solid-state, soft-start controllers designed for customers who require reliable and efficient soft starting of three-phase motors.
The DS6, which is available for current ranges from 40 to 180 amps, can be used to upgrade existing systems that are currently using wye-delta, autotransformers or across-the-line National Electrical Manufacturers Association (NEMA) and International Electrotechnical Commission (IEC) starters. Because of its small size, the DS6 can provide customers with the benefits of soft starting, without necessitating a change in enclosure sizes or additional assemblies.
The DS6 is designed to be wired in the three-phase line feeding the three-motor input leads as is done for typical across-the-line starting. Using silicon controlled rectifiers (SCR) to ramp the voltage to the motor, the DS6 provides smooth acceleration and deceleration of the load reducing wear on belts, gears, chains, clutches, shafts and bearings. Used often with high-friction loads, soft-stop control is often critical for applications where an abrupt stop of the load may cause system or product damage.
Once the motor is started, the internal run bypass contactor closes, resulting in the motor running directly across the line. The internal-run bypass contactor significantly reduces heat generation when compared to non-bypass starters, thereby reducing enclosure sizes and cooling requirements while maximizing the life of all the devices in the enclosure. The bypass contactor directly connects the motor line and improves system efficiency by reducing internal power losses.
The DS6 family includes a variety of additional benefits and features:
–Light-Emitting Diode (LED) displays device status and provides fault indication
–Variable ramp times and voltage control (torque control) settings provide unlimited starting configurations, allowing for application flexibility
–Minimizes the peak in-rush current’s stress on the power system
–Minimizes peak starting torque to reduce mechanical system wear and damage
–24 volts of direct current control module enhance personnel and equipment safety
–Multiple protective features, including over/under temperature and bypass dropout
Filed Under: Electronics • electrical, Motion control • motor controls