Light Curtain Muting Methods

When enabled a function block is purple with a 3 second count down timer.

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. First we test the safety light curtain and latch reset with mute off. The first method involves using the light curtain controller to initiate the muting and generally results in disabling the sensing field. The second uses control reliable auxiliary circuits or machine controller circuits and would result in the bypassing of the light curtain s output signal.

After 3 seconds the status output and mute function turn off. Four common machine safeguarding flaws and how to avoid them. Muting sensors shall be positioned beyond the light curtain in the dangerous area. In nearly any industry that manufactures a product there are automatic feeder systems and conveyor applications that can be optimized simply by using muting.

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 terms muting and blanking are frequently used incorrectly. From the instant the first of the two muting sensors is cleared. Next lets test the mute function.

Safety light curtains can be used in a variety of different modes such as muting blanking and floating blanking depending on the needs of the application. 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. When used with a safety light curtain muting enables the safety function to be temporarily. In normal operation if a light curtain detects an object it causes the safety system to stop any hazardous motion in the hazardous area.

The timer monitoring the 4 seconds shall be a safety related item. Also the status output for the mute light changes to green.