Hardy Process Solutions HI 2160RC PLUS, Operation And Installation Manual

Page: 107 / 220

HI 2160RC
PLUS
MANUAL
6-16
Step 12. Start the feeder and immediately start the timer. Material
begins to flow out of the feeder.
Step 13. Stop the feeder after one minute.
Step 14. Check how much material was dispensed in one minute by
looking at the total weight on the display.
Step 15. Clear the total weight and repeat the data gathering process
until you are sure the gathered data is accurate.
Step 16. Calculate the average feed rate value.
Step 17. The average feed rate is the value you need to calculate the
K(p), K(i) and K(d).
Step 18. End of data gathering.
Calculate the
K(pu) value
(initial K(p)
• Formula:
K(pu) = 1500(Max. Feed Rate: lbs/min or 900,000/(Max. Feed
Rate: lbs/hr)
Calculate the
Ultimate
Oscillation Cycle
Time (Tc)
• Formula:
Tc = Ti Averages/20 + .08
Calculate the
Time of Repeat
(Tr)
• Formula:
Tr = Tc x 20/Tiimebase
Calculate the
Three (3)
Control
Constants: K(p),
K(i) and K(d)
• Formulas:
K(p) = K(pu)/1.67
K(i) = 2 x K(p)/Tr
K(d) = 4 x K(i)
Enter the new
Control
Constants
Step 1. Press the Config button. The security message displays.
Step 2. Enter the HI Security Code number.
Step 3. Press the Enter button. The Main Menu appears.
Step 4. Press the down arrow
↓
button until the cursor is to the left of
the TUNING/CONTROL Sub-Menu.
Step 5. Press the Enter button. The TUNING/CONTROL Sub-Menu
appears.
Step 6. Press the down arrow
↓
button until the cursor is to the left of
the first constant K(i). (See Fig. 6-13)
Step 7. Use the numeric keys to enter the calculated constant value
for K(i).
Step 8. Press the Enter button to accept the new K(i) value.