Inductive limit switch IM18 utilizes proximity distance sensing control, no collision to avoid the disadvantage of easy damage. No standby power supply, good air tightness, long service life, the use of inductive principle, so that the internal switch action, to achieve the purpose of contact on and off, to achieve the control of the external circuit. Overcome the mechanical collision switch exists in the poor contact, easy to damage and other characteristics.
Limit switches, also known as travel limit switches, are used to control the travel of mechanical equipment and limit protection. In practice, the travel limit switch is installed in a prearranged position, and when the module mounted on the mechanical moving parts hits the travel switch, the contacts of the travel limit switch act to realize the switching of the circuit. Therefore, a limit switch is an electrical appliance that switches circuits according to the travel position of a moving part. Limit switches are widely used in various types of machine tools and lifting machines to control their travel and carry out terminal limit protection. In the elevator control circuit, but also the use of travel limit switches to control the speed of the switching car door, automatic opening and closing of the door limit, car up and down limit protection.
Limit switch is used to limit the movement of mechanical equipment limit position of the electrical switch. This switch has contact and non-contact. Contact type is more intuitive, mechanical equipment moving parts, the installation of the upper limit switch, and its relative movement of the fixed point on the installation of the limit position of the block, or the opposite installation position. When the mechanical contacts of the limit switch touches the block, change the control circuit, the machinery will stop running or change the operation. Due to the inertial movement of the machinery, this type of travel switch has a certain "over-travel" to protect the switch from damage.