SR44 Series Offers Smooth Acceleration
AutomationDirect's line of Stellar soft starters now includes the SR44 series of solid-state soft starters to control three-phase AC induction motors. The fully digital SR44 soft starters use thyristors in all three motor phases to provide controlled reduced voltage motor control for smooth acceleration/deceleration and reduced mechanical shock and starting stress. The SR44 series features 115 or 230 VAC selectable control voltage, as well as easily and separately adjustable motor start and stop times. The automatic application setup feature fully configures the starter for specific applications with one entry. The advanced energy-saving optimizing mode improves motor efficiency and power while delivering the demanded torque at low rpm. These fully programmable units are equipped with six-button keypads with two-line, 32-character displays; programmable I/O for remote control applications include a single digital input and two relay outputs. An optional Modbus communication card and remote keypad are also available. Suitable for a variety of motor loads, Stellar SR44 soft starters can be used for motor reversing, with external contactors, and can be connected "in-delta", allowing for use of a smaller soft starter.
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