Vacon NX series - Page 245

Hz
t
PID output
Error value
D-part
I-part
I-part
D-part
P-part=5 Hz
Error=10%
D-part
P-part= -5 Hz
Error= -10%
Fig. 28: PID output curve with the values of Example 2
EXAMPLE 3
Given values:
P2.1.12, P = 100%
P2.1.13, I-time = 0.00 s
P2.1.14, D-time = 1.00 sMin freq. = 0 Hz
Error value (setpoint – process value) = ±10%/sMax freq. = 50 Hz
As the error value increases, also the PID output increases according to the set values (D-
time = 1.00s).
Hz
t
PID output
Error value
D-part=10%=5.00 Hz
-10%/s
D-part
D-part
D-part= -10%= -5.00 Hz
P-part=100% *PID error = 5.00 Hz/s
1.00 s
10%
Fig. 29: PID output with the values of Example 3
133 PRESET SPEED 8 4 (2.1.22)
134 PRESET SPEED 9 4 (2.1.23)
PARAMETER DESCRIPTIONS VACON · 245
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