Hi Again,
I have a pool wall line that I would like to update. It consists of a payout reel, corrugator, 2 punch presses, a shear, and a take-up reel. The line originally had a 1000ppr line driven encoder on the corrugator which was connected by chain and sprockets. It has a micrologix 1500 using HSC function file with 79 in an integer file moved to the HSC.ACC for pulse per inch conversion.
The line ran ok, but we changed the corrugator and now the same 1000ppr encoder is directly face mounted to the end of the corrugator shaft roller(1:1). The corrugator moves 46.5" of material per revolution, so 1000 pulses = 46.5" or 21.505 pulses per inch.
The lengths we run vary from 500" to 1200" and are allowed a max. 1" variance.
I need to know the best way to improve the accuracy for these long lengths and how can I use floating values for the pulse per inch conversion?
The program is attached. I didn't create this program. I would have allowed lengths to be entered instead of a value for every length with a corresponding calibration file.
Thanks,
Lou
I have a pool wall line that I would like to update. It consists of a payout reel, corrugator, 2 punch presses, a shear, and a take-up reel. The line originally had a 1000ppr line driven encoder on the corrugator which was connected by chain and sprockets. It has a micrologix 1500 using HSC function file with 79 in an integer file moved to the HSC.ACC for pulse per inch conversion.
The line ran ok, but we changed the corrugator and now the same 1000ppr encoder is directly face mounted to the end of the corrugator shaft roller(1:1). The corrugator moves 46.5" of material per revolution, so 1000 pulses = 46.5" or 21.505 pulses per inch.
The lengths we run vary from 500" to 1200" and are allowed a max. 1" variance.
I need to know the best way to improve the accuracy for these long lengths and how can I use floating values for the pulse per inch conversion?
The program is attached. I didn't create this program. I would have allowed lengths to be entered instead of a value for every length with a corresponding calibration file.
Thanks,
Lou