What is the meaning of 'uni directional control' for electromechanical brakes?

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The discussion centers on the concept of 'uni directional control' in electromechanical brakes, specifically the SB-70B24-E32S model from Thomson Linear. Contrary to initial assumptions, uni directional control does not imply that the brake can only operate in one direction; rather, it allows the brake to engage in the direction of the shaft's movement when used dynamically. The brake can function bi-directionally, meaning it can apply braking torque in both clockwise and counterclockwise directions, depending on the shaft's rotation. The product does not come with specific controls, and users typically manage the brake by removing power when braking is required.

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Shady99
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hello i have a system consisting of bi directional rotating shaft.i would like to integrate a brake in the system for stopping the shaft.
i m interested in an electromechanical brake in thomas linear compnay's catalogue(http://www.thomsonlinear.com/en/product/SB-70B24-E32S).
They have mentioned that the brake has uni directional control.
what does that refer to. please help.
 
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uni means one, so the unit can only brake in one direction. ie it can apply an anti clockwise braking torque but not a clockwise braking torque (or vice versa).
 
Actually i have asked the company's application engineer. He said otherwise. The full text below for all to benefit:
1st email:Part number SB-70B24-E32S is a brake only. Thomson does not offer any controls for this brake either and we are unsure what specifications you are speaking of below that speak of unidirectional control since the SB series brake will run both clockwise and counterclockwise or in other words, bi-directional.There are not any specifications in Thomson literature that speak of a control for these units. Could you please clarify exactly what assistance you require?Thanks,
2nd Email:uni directional control is just a feature of the product meaning that you can control it to brake in the direction it is moving. It is just a way to word that if you are moving one direction that is the direction it will brake if you are using it dynamically. If you are using the brake as a holding brake then this would not apply. This is not saying that Thomson offers a control for the unit or that one is required. Many people just choose to wire the unit up and remove power when the braking is necessary.
 

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