We have 230V AC at the wall, which goes through anInverter, which makes three-ph

Question

We have 230V AC at the wall, which goes through anInverter, which makes three-phase 230V AC, which goes througha drum switch ("UP" "OFF" "DOWN"), which goes to themotor.

We have an UP Limit Switch and a DOWN Limit Switch (230V10A).

We would like to produce a simple circuit board to incorporatethe Limit Switches to stop the motor in only the single applicabledirection. (e.g., when the UP Limit Switch is contacted andopens, then the motor will not go up any more but themotor can still go down when the Switch is switched toDOWN)

We cannot simply run one leg of the power through the LimitSwitch as the motor will continue to run even when that leg iskilled (switch opens) on the two remain legs until the InverterOver Current Protection kicks in.

So, we need to know the "component" that the three legsfrom the Drum Switch feed into and is switchable on/off based onthe closed/open condition of the Limit Switch and actsupon all three legs simultaneously to either allow the flow ofpower of all three legs or prevent the flow of power ofall three legs to the Motor.

There seems to be one “however”... we may have todisconnect the common leads within the Drum Switch (which swap thephases) and run separate wires from the UP side andseparate wires from the DOWN side. Otherwise thecomponent above would terminate the power flow (when the LimitSwitch opens) irrespective of UP/DOWN position. So, we needseparate duplicate components / circuits... one for UP and one forDOWN?

Thanks.

Explanation / Answer

your problem sound good but if you can draw a diagram Ishould solve... one other thing what class is it ?

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