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5.4 Integral-Action Component of the Speed Controller
The capacitor C27 is responsible for the integral-action component of the speed controller
(see Figure 17).
The standard value of C27 is 220nF.
5.5 Direct Voltage Amplification of the Speed Controller
The resistor R71 is intended for modifying the static rigidity (see Figure 17). The rigidity
decreases with increasing resistor value. The standard value is 330Ohm.
5.6 Derivative-Action Component in the Tachometer Feedback
By inserting a resistor (R80) normally not provided with components and a capacitor (C25),
a differential action can be given for special requests to the control of the tachometer
feedback.