Light Curtain Muting Methods

Muting and light curtains.

Light curtain muting methods.

The value of light curtains is greater than many realize having functions and features relevant for machine safety factory control and productivity. 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 second uses control reliable auxiliary circuits or machine controller circuits and would result in the bypassing of the light curtain s output signal. When enabled a function block is purple with a 3 second count down timer.

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 used with a safety light curtain muting enables the safety function to be temporarily. Four common machine safeguarding flaws and how to avoid them. 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.

Also the status output for the mute light changes to green. Next lets test the mute function. Muting shall be desabled as soon as the light curtain is cleared and not later than 4 seconds max. 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 sensors shall be positioned beyond the light curtain in the dangerous area. The first method involves using the light curtain controller to initiate the muting and generally results in disabling the sensing field. First we test the safety light curtain and latch reset with mute off. From the instant the first of the two muting sensors is cleared.

The terms muting and blanking are frequently used incorrectly. 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.