Light Curtain Muting Standard

Muting sensors shall be positioned beyond the light curtain in the dangerous area.

Light curtain muting standard.

At this point the light curtain is muted with the die no more than 1 4 above the workpiece or automatically turned off. After 3 seconds the status output and mute function turn off. With a muting light screen access to a hazardous area is temporarily disabled muting allowing products to enter the hazardous area. Muting shall be desabled as soon as the light curtain is cleared and not later than 4 seconds max.

29 cfr 1910 212 states point of operation. From the instant the first of the two muting sensors is cleared. 10 to 30 v off voltage. Muting light curtain monitoring relays allow the automatic temporary suspension of the safety function if certain conditions are met.

Also the status output for the mute light changes to green. First we test the safety light curtain and latch reset with mute off. In normal operation if a light curtain detects an object it causes the safety system to stop any hazardous motion in the hazardous area. Open or 0 to 3 v short circuit current.

This post will help clarify the difference between the two so the correct safety light curtain functionality is chosen and the machine runs safely. Has a standard for this type of safeguarding device that is light curtains does 29 cfr 1910 212 now kick in. Osha was asked now that the u s. Next lets test the mute function.

Light curtain with muting two sensor l type and configurable safety relay introduction light curtains are used to detect attempted access to a hazardous area. Muting allows the stock to bend and the operator to move through the light plane without stopping the press brake slide. When enabled a function block is purple with a 3 second count down timer. In material handling applications material is allowed to pass through the protective field without shutting down the machine.

A safety light curtain shields a hazardous area for people s access. The terms muting and blanking are frequently used incorrectly. 10 ma with edm. Muting for most of the stroke is required since the tooling will interrupt the light curtain during normal stroking of the press.

Setup of a muting light curtain. Edm input wait input reset input muting input 1 2 override input. The timer monitoring the 4 seconds shall be a safety related item. When using a pnp output cable.

When there is no access for persons but the access for products must be available a muting light curtain offers a perfect solution. 10 to 230 ma can be connected.