TORSPEC EDDY CURRENT BRAKES
The Torspec International Inc. has a full range of Eddy Current Brakes (ECB). In eddy current brakes the drag force is an electromagnetic force between a magnet and nearby conductive objects in relative motion due to eddy currents induced in the conductor through electromagnetic induction. The Torspec ECB provides a self-contained, air-cooled, frictionless means of providing retarding torques for industrial and process systems. The brakes are available with a full range of control systems to suit every need from centrifuge decanter, web tension control to dynamometers. They can be torque-controlled over a wide range and can have speed-responsive systems for some processes.
Features of TORSPEC Brakes:
- Continuous retarding Torques up to 192 Nm (143 lb-ft)
- Continuous Braking Speeds up to 6000 rpm.
- A range of 7 sizes*.
- Air-cooled, frictionless operation-no wears, no routine maintenance; ease installation and maintenance.
- Belt drive, direct drive or flange-mounted to a gearbox.
- Tacho-generator incorporated for speed control and speed indication.
- Brakes can be driving in either direction (clockwise or counterclockwise).
Control Systems for TORSPEC Brakes:
- Speed control braking to maintain a set speed.
- Overspeed braking in association with a suitable control signal.
- “Open loop” torque control with a stabilization system.
- “Closed loop” torque control from a transducer signal.
- Cyclic variation of torque, either gradual or step function.
- Web tension control on reel unwind or capstan.
Typical Applications for TORSPEC Brakes:
- Control of scroll speed in continuous-process decanters centrifuges.
- Dynamometers for production and research testing.
- Simulation of dynamic loading.
- Overspeed braking for over-running loads.
- Unwind web tension control from stock reel.
- Nip roll or capstan web tension control.
TORSPEC Variable Speed Drives used as brakes:
- The standard Eddy Current Brake will not provide retarding torque at zero speed so, where full braking effect is required below 200-300 rpm, the TORSPEC Drive can be run with the motor operating in reverse direction to the process. This provides braking torque through zero speed.
- For applications where alternate drive and braking are required, the TORSPEC Drive can be fitted with a brake motor.
- In certain cases it is possible to provide braking effect by causing the motor to run above its synchronized speed. This creates a regeneration system so that the braking torque is used to drive the motor. This system is used for reels, which have to be driven up to speed then braked.