Light Curtain Muting Standard

Setup of a muting light curtain.

Light curtain muting standard. Our standard s difficulty here is that 1910 217 c 3 iii d allows muting on the upstroke and this application requires muting during over a much longer portion of the cycle. After 3 seconds the status output and mute function turn off. When there is no access for persons but the access for products must be available a muting light curtain offers a perfect solution. Next lets test the mute function.

In normal operation if a light curtain detects an object it causes the safety system to stop any hazardous motion in the hazardous area. Muting light curtain monitoring relays allow the automatic temporary suspension of the safety function if certain conditions are met. 10 to 30 v off voltage. With a muting light screen access to a hazardous area is temporarily disabled muting allowing products to enter the hazardous area.

When enabled a function block is purple with a 3 second count down timer. Muting shall be desabled as soon as the light curtain is cleared and not later than 4 seconds max. 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 sensors shall be positioned beyond the light curtain in the dangerous area.

Has a standard for this type of safeguarding device that is light curtains does 29 cfr 1910 212 now kick in. Also the status output for the mute light changes to green. At this point the light curtain is muted with the die no more than 1 4 above the workpiece or automatically turned off. Osha was asked now that the u s.

First we test the safety light curtain and latch reset with mute off. Muting for most of the stroke is required since the tooling will interrupt the light curtain during normal stroking of the press. 29 cfr 1910 212 states point of operation. A safety light curtain shields a hazardous area for people s access.

Muting allows the stock to bend and the operator to move through the light plane without stopping the press brake slide. This post will help clarify the difference between the two so the correct safety light curtain functionality is chosen and the machine runs safely. When using a pnp output cable. From the instant the first of the two muting sensors is cleared.

Open or 0 to 3 v short circuit current. 10 to 230 ma can be connected. The timer monitoring the 4 seconds shall be a safety related item. The terms muting and blanking are frequently used incorrectly.

Edm input wait input reset input muting input 1 2 override input. 10 ma with edm.