SPECIAL DESIGNS Electrically-controlled Centrifugal Brake An electrically-controlled centrifugal brake allows braking at speeds below the operating speed of the system that is to be braked. When power is not applied, the brake disc of a spring-loaded brake and the brake drum of a centrifugal brake are not free to rotate. When the engagement speed, which is below the normal operating speed, is exceeded, the centrifugal brake applies a braking torque. Electromagnetic brake in combination with a centrifugal brake This version is used for lowering loads at a defined speed with no electric power applied (power failure in the system). In normal operation, the load is held by the electromagnetic brake. Power failure causes the electromagnetic brake to release. To prevent the uncontrolled descent of the load, the centrifugal brake operates to lower the load at a defined speed. Centrifugal clutch with electromagnetic brake and belt drive In this case the centrifugal clutch is used to start a heavily-loaded machine. This protects the drive, which can accelerate at no-load until the engagement speed is reached. Power is transmitted by V-belts. When the drive is switched off, the electromagnetic brake can be used to bring it to a standstill. Electromagnetic brake in combination with a centrifugal brake This version is used for lowering loads at a defined speed with no electric power applied (power failure in the system). In normal operation, the load is held by the electromagnetic brake. Power failure causes the electromagnetic brake to release. To prevent the uncontrolled descent of the load, the centrifugal brake operates to lower the load at a defined speed. Centrifugal brake "SUCO-ZERO" This brake is used to bring a system quickly to a standstill if a pre-defined speed is exceeded. The system can then be reset manually to its original condition. Self-inducing electromagnetic clutch A belt pulley driven by an internal combustion engine is fitted with permanent magnets and serves as the rotor of a generator. The stator consists of a pack of laminations with copper windings. The electric current induced in the win-dings is fed to the coil of an electromag-netic clutch. This switches automatically at a certain speed to connect the drive to a machine (in this case via a timing-belt pulley). Where necessary, it is possible for the electromagnetic clutch to be switched on or off at any speed manually or by a control system.