{"id":55,"count":1,"description":"A \"Normally Open\" brake is a unit that is <strong>disengaged<\/strong> in its default, de-energized state. In this state, the shaft is free to rotate without any braking force being applied. To activate the brake and stop or hold the load, power must be supplied.    This is often referred to as a \"power-applied\" or \"energize-to-engage\" brake.    The principle of operation is the inverse of a spring-applied (fail-safe) brake:  <ul>   \t<li><strong>\u00c9tat par d\u00e9faut (Alimentation coup\u00e9e) :<\/strong>\u00a0There is no force\u2014or only a very light release spring force\u2014acting on the friction disc. The brake is \"open,\" and the shaft is free.<\/li>   \t<li><strong>\u00c9tat de freinage (Alimentation activ\u00e9e) :<\/strong>\u00a0L'\u00e9nergie (g\u00e9n\u00e9ralement la pression hydraulique, la pression pneumatique ou un courant \u00e9lectrique cr\u00e9ant un champ magn\u00e9tique) est activement appliqu\u00e9e pour g\u00e9n\u00e9rer une force de serrage sur le disque de friction, engageant le frein et cr\u00e9ant un couple de freinage.<\/li>  <\/ul>  <strong>Crucial Safety Implication:<\/strong> A \"Normally Open\" brake is <strong>pas s\u00fbr en cas de d\u00e9faillance<\/strong>. If there is a loss of control power or system pressure, the braking force is lost, and the brake will disengage.    <strong>Primary Applications:<\/strong> Because they are not fail-safe, \"Normally Open\" brakes are used for specific service or process control functions, not for critical safety holding:  <ul>   \t<li><strong>Contr\u00f4le de tension :<\/strong>\u00a0In unwind stands for materials like paper, steel, or wire, a \"Normally Open\" pneumatic or electric brake can apply a continuous and precisely modulated amount of drag to maintain constant tension in the material as it is unspooled.<\/li>   \t<li><strong>Freinage dynamique du service :<\/strong>\u00a0Ils sont utilis\u00e9s comme frein de service principal dans les applications o\u00f9 un frein d'urgence ou de stationnement s\u00e9par\u00e9 et s\u00e9curis\u00e9 est \u00e9galement install\u00e9. Par exemple, les freins de service sur un v\u00e9hicule ou un chariot en mouvement.<\/li>   \t<li><strong>Dynamom\u00e8tres :<\/strong>\u00a0Utilis\u00e9 pour appliquer une charge variable et contr\u00f4l\u00e9e afin de tester la performance des moteurs et des moteurs \u00e9lectriques.<\/li>  <\/ul>  In summary, \"Normally Open\" describes a brake that requires power to stop a load. Its function is primarily for controlled, in-process braking, and it is fundamentally unsuitable for applications where a load must be safely held in the event of a power failure.","link":"https:\/\/www.takebrakes.com\/fr\/tag\/normally-open\/","name":"Ouvert normalement","slug":"normally-open","taxonomy":"post_tag","meta":[],"_links":{"self":[{"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/tags\/55","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/tags"}],"about":[{"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/taxonomies\/post_tag"}],"wp:post_type":[{"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/posts?tags=55"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}