Best Performance in the 1-40 HP adjustable speed drive class
Smooth, responsive and highly reliable, the AS Drive with tachometer feedback lets you control speed within 1/2 percent for load changes from no load to full load. You also get a full 34 to 1 speed range and 250 percent of rated motor torque — great for starting and momentary overload conditions.

Dynamatic® AS/FAS Drives

Cutaway illustration reveals the durable simplicity of our Eddy Current design
Control, motor, and clutch in one
200% rated torque on start up
Easy installation
Tachometer feedback
Permanently lubricated bearings
Available in single phase or 3-phase
Easily add gears or brakes
Flexible modifications
PLC compatible
Interfacing the Dynamatic AS drive with a computer control system is a snap. The controller interfaces easily with PLC systems.
Designed for reliable adjustable speed performance
A look inside the Dynamatic AS drive tells you why it’s the leader in adjustable speed drive applications.
- Simple design
- High performance & reliability
- Only 4 bearings to maintain
- Few points of friction for long-lasting equipment
- Quick turnaround time from order to delivery
- 2:1 longevity vs. VFD
- Approx. 250% starting motor torque
- No expensive spares
- One simple controller
Uses
- Spindle
- Turn table
- Take-ups/Rewinds
Small, simple controller
The entire SCR controller consists of one printed circuit board. It’s interchangeable among a wide horsepower range of drives to reduce your inventory and save money. We test every controller for 100% usability before it leaves our factory.
AS Drives – Dynamatic Eddy Current, Friction & Spring Set Brakes
There are three brakes options, that can be mounted as an additional optional part, on either the clutch end or motor end of a standard horizontal AS Drive.
- Eddy Current Brake is an adjustable torque brake used to decelerate the drive.
- Friction Brake is an electromagnetic brake that uses friction to decelerate and stop the drive.
- Spring Set Brake is a failsafe/emergency brake to decelerate, stop and hold the drive.
Contact one of our engineers to learn if the addition brake options are right for your application.