dickieus
Member
I have just been given a situation where I need to synchronize 2 belt speeds. The original system used a set of 8 Prox switches on each belt looking at a wheel with one slot feeding to siemens logic blocks.
What I was given was the Prox inputs to digital inputs on a micrologix 1500. they are taking the word on 8 bits and srnding it to an interger file. Problem is the numbers can never be the same.
To match speeds they are trying to use an NEQ instruction and then if not equal add or subtract 1. This they are sending to an analog output.
I'm open to any ideas.
P.S. the master belt has a "jerk". The thinking is the prox system would be better than using encoders and HSC.
P.P.S. They also are adding an analog tacho-generator to the mix.
What I was given was the Prox inputs to digital inputs on a micrologix 1500. they are taking the word on 8 bits and srnding it to an interger file. Problem is the numbers can never be the same.
To match speeds they are trying to use an NEQ instruction and then if not equal add or subtract 1. This they are sending to an analog output.
I'm open to any ideas.
P.S. the master belt has a "jerk". The thinking is the prox system would be better than using encoders and HSC.
P.P.S. They also are adding an analog tacho-generator to the mix.