Starting and Stopping Options

Allen-Bradley Smart Motor Controllers provide ample design flexibility to meet the needs of a host of production applications. To help identify which controllers offer the standard and optional start/stop features described on the following pages, use the following code: SMC-2      SMC PLUS      SMC Dialog Plus
Soft Start By reducing starting torque surges, Soft Start provides smooth, stepless motor acceleration while minimizing damage to gears, couplings and belts.
Soft Start with Selectable Kickstart Activate the Selectable Kickstart function to provide an extra pulse of torque. This optional feature is ideal for overcoming stiction wherever high-friction loads are encountered.
Current Limit Start Current Limit starting is designed for applications that require the in-rush current to be limited during acceleration. Selectable Kickstart is also available with the Current Limit Start.
Dual Ramp Start Available exclusively on the SMC Dialog Plus controller, Dual Ramp Start allows you to choose between two separate Soft Start profiles with independently adjustable ramp times and torque settings. It’s designed for applications with varying loads, two speed requirements and reversing.
Full Voltage Start In the Full Voltage Start mode, the SMC performs like a solid-state contactor, achieving full in-rush current and locked rotor torque.
Soft Stop The Soft Stop option extends the stopping time to minimize load shifting or spillage.
Pump Control The SMC controller's unique, interactive Pump Control is designed to reduce fluid surges in pumping systems. It provides closed loop acceleration and deceleration control of centrifugal pump motors without need for feedback devices.
Preset Slow Speed The Preset Slow Speed option furnishes two jog speeds to facilitate process set-up and alignment. These speeds are available in both the forward and reverse direction without a reversing contactor.
SMB™ Smart Motor Braking SMB Smart Motor Braking stops a motor quickly for improved operation cycle times and increased productivity. Braking control with automatic zero speed shut-off is fully integrated into the controller’s compact design.
Accu-Stop™ Position Control Accu-Stop position control provides rapid braking to a slow speed and then braking to a stop. This option facilitates cost-effective general positioning control.
Slow Speed w/Braking Slow Speed with Braking combines the benefits of SMB Smart Motor Braking and Preset Slow Speed for applications requiring slow set-up speeds and braking to a full stop.