Stopping Safely with ServoStop

STOBER Drives emergency brake protects machinery, improves workplace safety

ServoStop

Sometimes an assembly line has to be stopped– RIGHT NOW!– to ensure the safety of employees and protect manufacturing machinery.

STOBER Drives, Inc. of Maysville, Kentucky, has an emergency braking system called ServoStop, which provides safe braking at emergency stops and during power outages.

“It’s an attention grabber,” said Adam Mellenkamp, ServoStop product manager for Stober. “Everyone we show it to may not be able to use it right now, but can think of a situation where they could have used it in the past. It was originally designed for a safety application where you need redundant braking.

ServoStop can be mounted on almost all common servomotors, giving it endless applications in factories universally, and is an integral part of STOBER’s ServoFit gear reducers. It has a plug-in coupling for simple motor removal, no matter what position the braked axis is in, and prevents gravity-affected axes from sinking or crashing.

“If you need a brake, this is the ‘easy button’ to get it,” said Mellenkamp. “You won’t need another supplier to adapt it. The ServoStop is also extremely compact due to its integration into the gear unit.”

Providing safe braking can be difficult as well as dangerous, especially when machinery incorporates vertical axes– which is common in material handling for robotics or machine tools industries.

These situations can be caused by a cut-off of drive power due to a problem in the machine controller, power failure, or brake failure in the motor, said Mellenkamp. “While other brakes can allow sliding, ServoStop can brake at full speed, prevent accidental sliding or falling of vertical axes with gravity load, and provide reliable braking during emergencies and power failures.”

Advantages of the ServoStop are that it is easy to remove motors, even with load; it is backlash-free and smooth-running; it offers frictional shaft to hub for high torque; and provides a compact design for low inertia.

For more information on ServoStop, visit http://www.stober.com/motion_control/servo_stop/.

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