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Digital Dosing Units
48
If a current signal is available (0 - 20 mA) calculate the frequency output of the extruder for the
lower / upper working area using the formula:
Frequency [Hz] = Input current [mA] x 10000 [Hz]
20 [mA]
Note the data:
Min. input frequency = __________ Hz
Max. input frequency = __________ Hz
Calculate the span factor using the formula:
Span factor [Hz / rpm] = Frequency [Hz]____________
Rotational speed of the extruder [rpm]x 10
Note the data:
Span factor = __________
Determining the Configuration Value
Extrusion (Constant or Proportional):
Mark the functions required. Use the numerical value indicated and insert it in the empty field if
applicable. Total the figures for configuration value.
Optional raw material level probe installed . . . . . . . . . . . . . . . . . . . . 1 ___
Optional additive level probe installed . . . . . . . . . . . . . . . . . . . . . . . .2 ___
Optional blending unit installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 ___
Totalizer displayed in lb (kg default) . . . . . . . . . . . . . . . . . . . . . . . . . 16 ___
Extruder throughput 1-6500 g/min . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
or
Extruder throughput (1-6500 g/min) X 10 . . . . . . . . . . . . . . . . . . . 32 ___
or
Extruder throughput (1-6500 g/min) / 10 . . . . . . . . . . . . . . . . . . . . . .128 ___
(NOTE: the throughput selections above determine placement of the decimal point on the
display)
External run/stop signal controls dosing . . . . . . . . . . . . . . . . . . . . . . 64 ___
Mounting on Mico mixing hopper . . . . . . . . . . . . . . . . . . . . . . . . . . . 256 ___