AGC Designer’s Reference Handbook
DEIF A/S Page 131 of 168
Signal length
The signal length is calculated compared to the adjusted period time. In the drawing below the
effect of the proportional regulator is indicated.
In this example we have a 2 percent regulation deviation and an adjusted value of the KP = 200.
The calculated regulator value of the unit is 40%. Now the pulse length can be calculated with a
period time = 2500 ms:
The length of the period time will never be shorter than the adjusted ON time. The P regulator
causes the relay output to activate. The I regulator has the same effect on the relay output as
described on page 126 concerning the reset time t
N
.
P-regulator
0
200
400
600
800
1000
1200
0 20 40 60 80 100 120
regulator value
kP
8%
4%
2%
1% 0,5%
ms
te
PERIODDEVIATION
10002500*100/40
*100/
=
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