We have a saw at work that uses an incremental encoder, photo eye and Omron CQM1 PLC to determine the depth of the cut. Each time the saw is started, the photo eye zero's the encoder value and fom there it starts, cuts about 30 parts and stops.
The circular blade of the saw's diameter varies between 250-300mm. What I'm trying to do is to get it to work with out the photo eye.
Is there some current sensing device that I can use to measure the drive Amps of the saw and detect when it is cutting into the part? If I can do this, I can move the saw slowly forward till it detects it's cutting the part and zero it then.
Any other methods or suggestions would be appreciated.
Thanks.
The circular blade of the saw's diameter varies between 250-300mm. What I'm trying to do is to get it to work with out the photo eye.
Is there some current sensing device that I can use to measure the drive Amps of the saw and detect when it is cutting into the part? If I can do this, I can move the saw slowly forward till it detects it's cutting the part and zero it then.
Any other methods or suggestions would be appreciated.
Thanks.