I am no guru in the field of electrical circuits so please keep your replies down to earth and excuse any failings in my wording, thanks.
I wish to build a machine that consists of a 3 phase a/c motor driving a very slow reduction gearbox.
The gearbox in turn will rotate a shaft with an arm attached to it.
The arm will never rotate more than 180 degrees.
I need for the arm to have a home base with a limit switch to stop at HOME.
I need a 2nd limit switch which can be moved to STOP the arm rotation at a selected point for degrees of movement.
I would like to think there is a circuit that will allow the arm to be initiated by me manually thru a switch mentioned in the next line.
I have visions of this switch being a reversible 3 phase barrel/tumbler style with a lever arm.
I also envisage that when the arm reaches the predetermined limit and the circuit is switched OFF, then by me moving the barrel lever to the reserve setting that the arm will automatically initiate and return to HOME unless I stop it manually before it reaches HOME.
The other question, can this be done cheaply?
I can source a tumbler reversible switch and already have the motor and reduction gearbox.
I figure that I will need a pair appropriate limit switches, but not sure what else maybe needed to achieve what I seek.
Oh, power supply is from mains power and I have 3 power wires, an earth and a neutral at my disposal...
Any input will be much appreciated.
Thanks, Russ.
I wish to build a machine that consists of a 3 phase a/c motor driving a very slow reduction gearbox.
The gearbox in turn will rotate a shaft with an arm attached to it.
The arm will never rotate more than 180 degrees.
I need for the arm to have a home base with a limit switch to stop at HOME.
I need a 2nd limit switch which can be moved to STOP the arm rotation at a selected point for degrees of movement.
I would like to think there is a circuit that will allow the arm to be initiated by me manually thru a switch mentioned in the next line.
I have visions of this switch being a reversible 3 phase barrel/tumbler style with a lever arm.
I also envisage that when the arm reaches the predetermined limit and the circuit is switched OFF, then by me moving the barrel lever to the reserve setting that the arm will automatically initiate and return to HOME unless I stop it manually before it reaches HOME.
The other question, can this be done cheaply?
I can source a tumbler reversible switch and already have the motor and reduction gearbox.
I figure that I will need a pair appropriate limit switches, but not sure what else maybe needed to achieve what I seek.
Oh, power supply is from mains power and I have 3 power wires, an earth and a neutral at my disposal...
Any input will be much appreciated.
Thanks, Russ.