Hi every one,
we have today a problem that need experts to be resolved.
roller shutter is used today in every home and may be controlled via electronic design without relay.
the idea is to destribute phase between the motor wich have two coil with common point.
there is any one who have expertise with this?
the problem::
when switching phase (line) all the system works perfectely but if the limit switch of the motor (roller shutter) is reached the triac can not be controlled any more. when other directions coil is powred with the second triac we obtain two powred coil at the same time then motor is breaking with hight current ICC consumption.

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2. we will be thankful for ​

 

Your schematic does not show the limit switches. Without knowing how you have connected the limit switches we can't say why it does not work.

Les.

 

It would seem that you have the L.S. wired wrong, if you disable one of the Triacs at the right point it should still allow the other to work for reverse, also there should be no conflict of powering two at once?
Max.

 

One other point. The way you have drawn your schematic it should not work at all. Your opto triac is shorting MT1 to the gate. You would normally connect the output of the opto triac between the gate and MT2 via a limiting resistor. This is for a resistive load. Application note AN-780A suggests a different method of connection for an inductive load.

Les.