How can I detect rotary motion in CNC machines using a standard method?

[vbdev]

Hello everybody,

I am basically in computer & electronics field. In one of my project, I want to get the status of the motor of cnc machines (to detect whether it is running or not). Speed is not important. Presently I am using proximity sensor near the motor shaft. I get pulses when motor is running. Then I have to convert these pulses to a continuous signal.

I am looking for some simple mechanical arrangement to detect linear or rotary motion. So that a limit switch will operate when motor is running.

Thanks.

 

[Jobrag]

There must be something controlling the motor which at some stage in the controller tells the motor to run can you piggyback onto that signal.

 

[vbdev]

Thanks Jobrag. Yes, such signal is available on some machines. But as my product is used with different types of CNC machines, every time I have to find such signal which is difficult.

Thats why I have decided to use a standard method which will work for any machine. I got one tip to use centrifugal switch, I will see whether it is possible or not.

 

[vbdev]

Thanks Jobrag. Yes, such signal is available on some machines. But as my product is used with different types of CNC machines, every time I have to find such signal which is difficult.

Thats why I have decided to use a standard method which will work for any machine. I got one tip to use centrifugal switch, I will see whether it is possible or not.