P regulator
0
20
40
60
80
100
0 10 20 30 40 50 60
Kp
Output (%)
4 %
2 %
1 %
0.5 %
Speed range
Because of the characteristic above, it is recommended to use the full range of the output to avoid an unsta-
ble regulation. If the output range used is too small, a small regulation deviation will cause a rather big output
change. This is shown in the diagram below.
1% regulation
deviation
5 20
mA
k
P
10 2515
k
P
A 1 % regulation deviation occurs. With the Kp setting adjusted, the deviation causes the output to change 20
%. The table shows that the output of the AGC 110 changes relatively much if the maximum speed range is
low.
Max. speed range Output change Output change in % of max. speed range
50 % 20 % 20/50*100 % 40
100 % 20 % 20/100*10 % 20
Dynamic regulation area
The diagram below shows the dynamic regulation area at given values of Kp. The dynamic area will be small-
er if the Kp is adjusted to a higher value.
AGC 100 Designer's Reference Handbook
4189340766 UK
PID controller (AGC 110 only)
DEIF A/S Page 142 of 152
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