5-24 Operation MN1903
9. Usingt he check boxes below the graph,
select the Measured velocity and Demand
velocitytraces.
Measuredvelocity
Demandvelocity
Figure15 - Correct value of KVELFF
Itmay be nec essary to make changes to the calculated v alue of KVELFF.If the trace for
Measuredv elocity appears above the trace for Demand veloc ity,reduc e the value of KVELFF.
Ifthe trac e for Measured velocity appears below the trace for D emand velocity, increase the
valueof KVELFF. Repeat the test after each change. When the two trac es appear on top of
eachother (approximately), the correct value for KVELFF has been found as shown in
Figure11.