ED-1-3-21 Adjustable roller arm type ed safety limit switch

Description

The ED series safety limit switches conform to EN 50047 and have been developed to provide a range of options including plastic

cases in various sizes, a choice of snap-acting, slow break/make with 2 contact configurations and a choice of actuator heads.

The ED series offers the option of rotating the head in 90 ° increments before installation to allow ease of mounting.

Highly limit switches can be used in other applications other than guard doors, for example on moving machine beds, crane arms,

lifts, elevators, etc.

Operation of these limit switches is achieved by the sliding action of the guard or other moving object deflecting the plunger or lever.

For safety applications it is important that upon actuation, the guard or other moving objects should not pass completely over the

switch and allow the plunger or lever to return to its original position.

Features

• Conforms to EN (TUV) standards corresponding to the CE marking

• Positive opening operation of NC (Normally Closed) contacts conforming to

IEC /EN 60947-5-1

• Double insulation makes ground terminal unnecessary

(Bears marking)

• Wide standard operating temperature range: -25 ° C to 80 ° C

• Full range of actuator heads and levers suitable for safety applications

• Sealing up to IP 67

• Wide switch variations, (Snap action and slow action basic switches)

• International conduit sizes

Positive Opening Mechanism

1NC/1NO Contact (Snap-action)

Conforms to EN60947-5-1 Positive Opening

If metal deposition between mating contacts occurs on the NC contact side, they can be pulled apart by the shearing force and tensile

force generated when the safety cam or plunger engages the movable contact blade. When the safety cam or plunger is moved in the

direction of the black arrow the Limit Switch releases.