How to measure of paper line speed using DP820 installed on AC800M?
Greetings
I am trying to measure production line speed using incremental encoder connected to DP820/TU810 on Compact AC800M controller. the case is that I do mange to count the encoder pulses, also I do mange to do reset to the counter accumulated value, the frequency is fixed all the time at a value equal to 50% of full scale frequency range (i.e. if the full scale is 100 the value all time is 50.0), I do think that there is missing something in the setting ... kindly advice
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Hi,
We need to know the CPR(cycles per revolution) of the encoder to calculate rpm of the motor. Use the below formula f(kHz) = (cycles/rev)*(rev/sec)/1000
Further if you require to calculate the distance(paper length) then use the eqn.
(PPR) / (2*pi*radius of shaft) = pulses per inch
Hope this information helps you..
by osama malhy Rank: 1051 on 10/26/2012 7:50:42 PM | Like (0) | Report
i would say , can i do that using the setting of the DP820?
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