Rockwell Automation SP120 AC Drive Demo Unit - Manual (Page 5)

Introduction 1-1
C
HAPTER
1
Introduction
This manual describes how to use the SP120 demo unit.
For complete product information, refer to the SP120 AC
Drive Installation and Operation Manual (D2-3456).
1.1 What Is a Variable-Speed Drive?
A variable-speed drive is an electronic device that controls
the speed, torque, horsepower, and direction of an AC or DC
motor.
Variable-speed drives offer:
• Improved process control by enabling you to control
virtually any process variable and to control your process
remotely with electrical interfaces.
• Reduced operating costs by enabling you to match the
motor speed to the load requirements.
• Reduced maintenance by providing a “soft-start” capability
that limits inrush current to reduce stress on mechanical
parts.
1.2 About the SP120 Drive
The SP120 drive is best suited for applications with these
requirements:
• A three-phase 1/4 to 5 HP AC induction motor is used
• 115 V, 230 V, or 460 V input is available
• On-board operator controls are desired