Yokogawa digitalYEWFLO (DY) - Manual (Page 96)

TROUBLESHOOTING
IM 1F2B4-01-YIA
Page 91
The software configuration flow chart is a simplified diagram, some details are left out for clarity.
Figure 6.2.2: Software Configuration
1. The flow rate frequency is input to the CPU and displayed in parameter G01.
2. The Noise Judge then discriminates whether this signal is flow rate or noise, based on the
settings of B08 (Min. Density) and H06 (Noise Judge). If noise judge determines the signal to
be flow, it is passed to Low Cut.
3. The Low Cut function (performed by H07 L.C. Flow rate) determines if the signal frequency
is greater than that input at H07, the Low Cut Flow rate. If the signal exceeds Low Cut, it is
then passed on to be computed into an actual flow rate and appropriately scaled for output
and totalization.
4. The resulting flow signal is then smoothed according to the damping value set in parameter
B53.
5. Error correction functions are applied to the damped flow signal. Refer to the appropriate
How to listing for details.
6. From this point the CPU calculates the appropriate values for analog and pulse output, and/or
for totalization and rate display.