Vari-speed R400 Series- 176B400 N

NOTE: THIS IS THE NEW- UDATED VERSION

The Vari-Speed R400 is a full-wave DC regenerative control that provides high performance four quadrant speed and torque control. The R400 solid state controller converts single phase AC line power into an adjustable DC power to control 1/4 to 2, or 5 horsepower DC motors. 

The Vari-Speed R400 flexible design is easily select-able for speed or torque mode, tachometer voltage, dual voltage and for horsepower size. The R400 is designed with today's most desirable features including isolated input signals, status indicators, alarm outputs.

 When performing frequent directional changes, the R400 transfers excess system energy back to the AC line rather than wasting additional energy by the use of a dynamic brake resistor. 

Regenerative DC drives are able to provide complete control of a DC motor's speed and torque simultaneously. A regenerative drive has the capability of producing torque in either braking or motoring modes, while operating a motor's speed in a consistent direction of rotation.

The capability to provide braking torque is a result of the drive's ability to operate in all for quadrants of the motor's speed/torque curve. A four-quad DC drive's ability to operate in a regenerative mode is primarily provided by the additional power section included in the design.

Four additional SCR devices are utilized in comparison to a standard NEMA Code K-type converter. These four additional components allow for the complete control of both the voltage and current flow to the armature of the DC motor, thus controlling both the speed and torque.