Technical information

1 – INTRODUCTION
General Overview
6
1.4 General Overview of a Reduced Voltage Starter
The RediStart MX motor starter is a microprocessor-controlled starter for single or three-phase induction motors. The starter can be
custom designed for specific applications. A few of the features are:
• Solid state design.
• Reduced voltage starting and soft stopping.
• Closed-loop motor current control, power control, torque control.
• Programmable motor protection.
• Programmable operating parameters.
• Programmable metering.
Each starter can operate within applied line voltage and frequency values of 100VAC to 600VAC (optional 1000VAC) and 23 to
72Hz.
The starter can be programmed for any motor FLA and all of the common motor service factors. It enables operators to control both
motor acceleration and deceleration. It can also protect the motor and its load from damage that could be caused by incorrect phase
order wiring.
The starter continually monitors the amount of current being delivered to the motor. This protects the motor from overheating or
drawing excess current. The starter automatically stops the motor if the Phase to Phase line current is not within acceptable ranges or
if the current is lost in a line.
Features The enhanced engineering features of the starter include:
• Multiple frame sizes
• Universal voltage operation
• Universal frequency operation
• Programmable motor overload multiplier
• Controlled acceleration and deceleration
• Phase rotation protection
• Regulated current control
• Electronic motor thermal overload protection
• Electronic over/under current protection
• Single phase protection
• Line-to-line current imbalance protection
• Stalled motor protection
• Programmable metering
• Passcode protected
• Programmable Relays
• Analog output with digital offset and span adjustment
• Analog input with digital offset and span adjustment