Light Curtain Muting Methods

The terms muting and blanking are frequently used incorrectly.

Light curtain muting methods. This post will help clarify the difference between the two so the correct safety light curtain functionality is chosen and the machine runs safely. In nearly any industry that manufactures a product there are automatic feeder systems and conveyor applications that can be optimized simply by using muting. The second uses control reliable auxiliary circuits or machine controller circuits and would result in the bypassing of the light curtain s output signal. The timer monitoring the 4 seconds shall be a safety related item.

In normal operation if a light curtain detects an object it causes the safety system to stop any hazardous motion in the hazardous area. After 3 seconds the status output and mute function turn off. Also the status output for the mute light changes to green. The value of light curtains is greater than many realize having functions and features relevant for machine safety factory control and productivity.

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. The first method involves using the light curtain controller to initiate the muting and generally results in disabling the sensing field. Four common machine safeguarding flaws and how to avoid them.

When used with a safety light curtain muting enables the safety function to be temporarily. Muting and light curtains. Muting sensors shall be positioned beyond the light curtain in the dangerous area. When enabled a function block is purple with a 3 second count down timer.

The safety light curtain has become so ubiquitous that it is all too easy to regard it as a simple on off device a fail safe fit and forget substitute for protective fencing. First we test the safety light curtain and latch reset with mute off.