VariSpeed R400

VariSpeed R400 Series Overview

The VariSpeed R400 series is a family of 2 HP DC motor control drives produced by Danfoss and Graham. These thyristor-based (SCR) drives regulate the speed and torque of DC motors by providing adjustable armature voltage and current, with models offering separate field control for extended motor management. Configurations accept AC input power (selectable 115V or 220V) and deliver adjustable DC output for armature control.

Features

• 2 HP DC motor speed and torque regulation
• Adjustable DC armature voltage output
• Selectable current limiting
• Available with or without field control

Applications

These drives are commonly used in paper processing equipment, material handling, and general industrial machinery requiring precise DC motor speed control.