I have a ty-50af 2 wire 220v ac synchronous motor (4w 2.5/3r/min cw/ccw) that I am wanting to operate.
These motors are used in a lot of cheap appliances including tray motors in my incubators. So far I have made other motor driving options for my incubator tilt and roller trays.
(1) L298 brushed gearbox DC 12v (single and gang tray, open and closed loop)
(2) L298 stepper motor 12v (single and gang tray, open and closed loop)
(3) PCA9685 servo SG-5010 12v
But the lure of simple and cheap strikes again and so far I have found very little on ways of controlling this type of motor.
I am open to suggestions of other ways of achieving the objective of "simply and safely" controlling the TY-50AF. (relative term )
A 2 wire AC motor is not reversible, are they?
I HAVE reversed shaded pole fan motors by pulling the end bells and reversing the stator, but that would be tough to automate.
The motors operation is a function of "Runtime" {3 rev min (1080 deg) / 60 seconds = angular position } and direction traveled [method yet unknown].
I am not sure if using a H bridge circuit would control the direction.
Now to address your comment JRemmington.
"I am open to suggestions of other ways of achieving the objective of "simply and safely" controlling the direction of the shaft rotation of the TY-50AF."
The objective was to ask more experienced members of the Arduino forum community specifically in the motors section, IF they knew of "simpler more effective methods or pathways" to controlling / operating (both software structure and hardware architecture) the ty-50af 2 wire 220v ac synchronous motor.
I hope I have clearly clarified where I am coming from?
The following link is the best explanation I have found so far. This link gives a good break down on what the motor is and its internals.
quoting directly from the first link
" Which basically means, its a high torque motor, moves very slowly (approx. 2.5 revolutions per minute), and can rotate counter-clockwise (CCW) or clockwise (CW). This mode is also known as "free", I guess since the motor is free to turn in either direction when power is applied. The direction can usually be influenced by applying a pressure to the output shaft in one direction or another. The motor should then rotate in the direction that is easiest for it to move. "
So I have just tested and confirmed that the TY-50AF motor will from it's start position, randomly travel in either clock wise or counter clockwise rotation.
In my instance, for the motor I am using; The motor will lockup and hum if too difficult to move in the direction of travel. My motor did not progress as per robert davidsons last observation.
I have since assembled the tray motor and observed how the motor and the tray interact.
The tray will allow a full 360 degree rotation and the eccentric reciprocates in a similar yet different fashion to how outsider first suggested. (horizontal not vertical direction). This means that the tray design counts on the fact, no one knows which direction the motor shaft will turn.
From all the applications I have researched so far I am finding that synchronous motors are only put in applications where they need to turn a mechanism and that direction is irrelevant.
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