ABB ACS880 Series, Руководство по прошивке

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Def / Type
FbEq 16b / 32b Description Name / Range /
Selection No.
100 = 1 / 100 = 1 Gain for PID controller. 0.10 ... 100.00
60.0 s / real32 Defines the integration time for the process PID
controller.
This time needs to be set to the same order of
magnitude as the reaction time of the process being
controlled, otherwise instability will result.
Error/Controller output
Time
Ti
I
O
G x I
G x I
I = controller input (error)
O = controller output
G = gain
Ti = integration time
Note: Setting this value to 0 disables the “I” part,
turning the PID controller into a PD controller.
Set 1 integration
time 40.33
1 = 1 s / 10 = 1 s Integration time. 0.0 ... 32767.0 s
0.000 s / real32 Defines the derivation time of the process PID
controller. The derivative component at the controller
output is calculated on basis of two consecutive error
values (E
K-1
and E
K
) according to the following formula:
PID DERIV TIME × (E
K
- E
K-1
)/ T
S
, in which
T
S
= 2 ms sample time
E = Error = Process reference - process feedback.
Set 1 derivation time 40.34
1000 = 1 s / 1000 = 1
s Derivation time. 0.000 ... 10.000 s
Parameters 427