The circuit connection of the electric hoist machine?
In addition, a limit switch should be installed to ensure that the electric gourd is in place and it can stop working. In order to insure, the limit switch should also be loaded, and the limit switch is installed in the back of the limit switch, which protects when the limit switch fails.
As long as the upper contactor (rich) is always open, connect to both ends of the open button. This way, press the upbutton, loosen the button, keep the connection open by the contactor, and the electric gourd is still running up.
Hello: "Does the contactor have a constant closing contact?" ... There is. However, it is necessary to open auxiliary contacts frequently. As long as the road map is made, it can be "up or down". "How much more can we do?" Two contacts, two buttons, two limit switches, two limit switches. According to the circuit diagram, it is the automatic, downward controller. In order to ensure the safe operation of the dish, you should also install a chain in the entrance hall door to prevent the personnel from being injured.
