Soft starter designed to control AC induction motors

AutomationDirect’s Stellar SR55 series of solid-state soft starters are designed to control three-phase AC induction motors and use thyristors in all three motor phases for controlled, reduced voltage motor starting and stopping.
By AutomationDirect June 23, 2015

AutomationDirect’s Stellar SR55 series of solid-state soft starters are designed to control three-phase AC induction motors and use thyristors in all three motor phases for controlled, reduced voltage motor starting and stopping. Courtesy: AutomationDirec

AutomationDirect’s Stellar SR55 series of solid-state soft starters are designed to control three-phase AC induction motors. The SR55 full-featured solid-state soft starters are available in three frame sizes. They are digital and provide full motor overload protection and use thyristors in all three motor phases for controlled, reduced voltage motor starting and stopping. The SR55 soft starters are designed for use in general purpose soft start motor control applications where traditional across-the-line starting or wye-delta starting would typically be appropriate and are ideal in applications requiring lower inrush currents.

The SR55 series features 24 Vdc, 110 or 230 Vac selectable control voltage, as well as adjustable motor start and stop times. These units are equipped with a touchscreen with a menu structure, a quick automatic application setup feature, built-in SCR failure protection, and full data logging. SR55 soft starters also feature integrated Modbus RTU, or optional Modbus TCP or Ethernet/IP communication, as well as programmable analog I/O, digital inputs and relay outputs for remote control. The IP20-rated Stellar SR55 soft starters are panel-mountable with optional finger guards (for frame sizes 1 and 2 soft starters) and are suitable for a variety of motor loads.

AutomationDirect

www.automationdirect.com 

– Edited by CFE Media. See more Control Engineering motor and drive products.

Want this article on your website? Click here to sign up for a free account in ContentStream® and make that happen.