How to measure Frequency (speed) using DP820
i do have an AC800M (Compact )having DP820 , it is required to maesure Speed(Frequency) of a line attached to Incremental encoder (250 pulse/rev) , i could read counted number of pulses but the freqeuncy all time equal (50.0) which is the 50% of the full scale , is thier is any setting need to be adjusted?
in the S800 i/o manual is talking about the freqeuncy is measured from that equation
where to find Fr , Sx and Sr?
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