andrew2022
New Member
this is more electrical than electronics, but im sure someone will know how to do this. there is a lift in a 3-floor building. it is controled by a switch outside only. no switches inside the lift. what i need is a way to stop the motor when its level with the floor. i know how i can start/stop the motor but not sure how to get it to stop exactly where i want it.
another problem is the switch to call the lift on the second floor. it needs to know where the lift is (either up or down) so it knows which way to turn the motor. from the top and bottom, this is easy to do.
any1 kno of a way to do this? itll prob have to slow down as it comes near to the floor, but how can i do this? . the motor is 3 phase 400V
another problem is the switch to call the lift on the second floor. it needs to know where the lift is (either up or down) so it knows which way to turn the motor. from the top and bottom, this is easy to do.
any1 kno of a way to do this? itll prob have to slow down as it comes near to the floor, but how can i do this? . the motor is 3 phase 400V