In material handling applications material is allowed to pass through the protective field without shutting down the machine.
Light curtain muting examples.
Some typical muting applications include but are not limited to.
For this purpose muting sensors are installed on both sides of the light curtain which determine in which cases to activate muting.
Muting shall be desabled as soon as the light curtain is cleared and not later than 4 seconds max.
Muting light curtain monitoring relays allow the automatic temporary suspension of the safety function if certain conditions are met.
First we test the safety light curtain and latch reset with mute off.
In addition to muting these modules monitor up to three light curtains with presence.
Also the status output for the mute light changes to green.
It is not to be confused with blanking or bypassing.
If the light curtain is muted then the demand on the light curtain is ignored if the muting sensors and light curtain are broken in the proper order.
Safety light curtains with muting area monitoring by means of safety light curtains.
Important this application example is for advanced users and assumes that you are trained and experienced in safety system requirements.
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.
A brief controlled deactivation of the light curtains muting ensures.
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 is the intentional suppression of the protective function of light curtains the light curtain is muted temporarily.
Light curtain is violated muting the light curtain using f cpu freeing of workpieces sequential muting with 4 muting sensors 2 sensor pairs is implemented in the application example.
Usually safety light curtains with vertical detection zones.
After 3 seconds the status output and mute function turn off.
As an example muting a light curtain would ignore the light curtain safety function.
The timer monitoring the 4 seconds shall be a safety related item.
From the instant the first of the two muting sensors is cleared.
When enabled a function block is purple with a 3 second count down timer.
For the transport direction of the workpiece both directions are permitted.
The temporary automatic suspension of a safety function during the non hazardous portion of the process machine cycle.
Muting differentiation between humans and machine lock application blanking european version.
Photoelectric retro reflective sensors are used as muting sensors.
