7ML19985CN01 Milltronics SF 500 - INSTRUCTION MANUAL Page 61
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PID Control
Figure 1
Figure 2
Figure 3
5. Once the P term value is set to give the control output of the SF 500 consistent
oscillation and the error is at its minimum, turn the pre-feeder off.
6. The I term value can now be set. Begin by entering the default value of 0.2.
7. Restart the pre-feeder (test weights or chains still applied) and feed rate setpoint
entered.
8. Again observe the oscillation of the control output. Compare results to the figures 4,5
and 6 below.
P term is too high
SETPOINT
SETPOINT
P term is too low
SETPOINT
P term is correctly set