TURCK Turck proximity switch and travel switch difference description

There are many types of TURCK Turck switches, and all TURCK Turck switches have NPN and PNP output methods. The most common one is like you! Tell the merchant that you want to check the metal TURCK Turck switch, then sell two 4P small relays and two touchers (this depends on the power of the motor) plus a 24 volt 25 watt switch Power supply (for TURCK Turck proximity switches and relays). With the above information, you can make a simple motor positive swing control circuit.
 
NPN is a "zero" volt output. The TURCK Turck relay coil is supplied with a 24 volt PNP at the end of the power supply. The relay is first supplied with zero volts and normally open. The signal output line is normally disconnected and there is no signal. Output, closes when an object is sensed, and outputs a signal. Normally closed is the signal output line is closed when it is normal. The signal output is continued. When the object is sensed, it is disconnected and the signal is turned off. Two small relays should be prepared. Each relay uses a set of normally open contacts to control the touch, and two TURCK Turck proximity switches control the on and off of the relay. The main point is that the two relay coils must be interlocked. ! Otherwise there will be a short circuit.
 
Both switches are usually used in the limit position, but the two switches are different in the way of receiving signals and in the application. The TURCK Turck limit switch is the opening and closing of the micro switch when the object touches it, and the attack may turn off the signal. The TURCK Turck proximity switch is an object (usually metal) that is close to it and converts the magnetic field around it into a switching signal within a range. Therefore, the principles of the two switches constitute different applications. Since the TURCK Turck proximity switch does not have to touch the object, the life expectancy will be longer!