Windhorse1960
- Jan 11, 2018
- 3
- Joined
- Jan 11, 2018
- Messages
- 3
I'm electrifying an old dumbwaiter and going to utilize a power winch similar to what is used in a garage, with both up and down controls.
At this point I do not have the winch, but "presume" the wired switch to be 12v.; the winch itself is 110v and can lift up to 400#, however the max capacity will never exceed 150# given the size of the car body.
The project would be easy, except that the house has three floors, and we would like to call and send the dumbwaiter to each floor as necessary.
I had planned on the following:
* Each floor has a stop switch to indicated to control which floor the platform is on;
* Each floor's door has a safety switch on the door to prevent any movement if it is open;
* Each floor has an external series of switches to call to that floor or send to another floor.
Therefore the logic is as follows:
3rd Floor
Up to floor 3 (unless position switch already engaged)
Down to floor 2 (unless position switch already engaged)
Down to floor 1 (unless position switch already engaged)
2nd Floor
Up to floor 3 (unless position switch already engaged)
Up or Down to floor 2 (unless position switch already engaged)
Down to floor 1 (unless position switch already engaged)
1st Floor
Up to floor 3 (unless position switch already engaged)
Up to floor 2 (unless position switch already engaged)
Down to floor 1 (unless position switch already engaged)
Simple latching relays for everything would be easy, with the logic of the 2nd floor "Up or Down" being this: if the car was on the 1st floor and the center button was pushed to call it to the 2nd floor, no power would be sent to the winch "down" controller since the car was already on the 1st floor, thus engaging the bottom safety; the "latch" wouldn't take, and the "up" control would engage. Same scenario if the car was on the top floor..
Ancient as I am, I know this could be accomplished with old fashioned latching relays, however I'd like suggestions and schematics for other suggestions with stable and safe logic control.
Please, no Arduino plans... I try to adhere to the KISS principal.
Thanks in advance.
At this point I do not have the winch, but "presume" the wired switch to be 12v.; the winch itself is 110v and can lift up to 400#, however the max capacity will never exceed 150# given the size of the car body.
The project would be easy, except that the house has three floors, and we would like to call and send the dumbwaiter to each floor as necessary.
I had planned on the following:
* Each floor has a stop switch to indicated to control which floor the platform is on;
* Each floor's door has a safety switch on the door to prevent any movement if it is open;
* Each floor has an external series of switches to call to that floor or send to another floor.
Therefore the logic is as follows:
3rd Floor
Up to floor 3 (unless position switch already engaged)
Down to floor 2 (unless position switch already engaged)
Down to floor 1 (unless position switch already engaged)
2nd Floor
Up to floor 3 (unless position switch already engaged)
Up or Down to floor 2 (unless position switch already engaged)
Down to floor 1 (unless position switch already engaged)
1st Floor
Up to floor 3 (unless position switch already engaged)
Up to floor 2 (unless position switch already engaged)
Down to floor 1 (unless position switch already engaged)
Simple latching relays for everything would be easy, with the logic of the 2nd floor "Up or Down" being this: if the car was on the 1st floor and the center button was pushed to call it to the 2nd floor, no power would be sent to the winch "down" controller since the car was already on the 1st floor, thus engaging the bottom safety; the "latch" wouldn't take, and the "up" control would engage. Same scenario if the car was on the top floor..
Ancient as I am, I know this could be accomplished with old fashioned latching relays, however I'd like suggestions and schematics for other suggestions with stable and safe logic control.
Please, no Arduino plans... I try to adhere to the KISS principal.
Thanks in advance.