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Overview
Essential details:8440-1546 H Woodward Servo Controller
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8440-1546 H Woodward Servo Controller
1) The speed system means that the motor runs according to the given speed instruction.
2) The application of speed control is quite wide: continuous speed control system requiring fast sound seat; Positioning system by upper closed loop; A system that requires multiple column speeds for fast switching.
3) Usually the speed of the servo is given as an analog quantity, that is, the size of the analog amplitude determines the size of the given speed, and the positive and negative determines the motor should be dependent on the speed instruction gain (Pn300).
Matters needing attention
1) The speed loop gain Pn102 is usually set higher to make the whole system respond faster and the motor rigidity will be enhanced. However, a large gain may cause the system to vibrate. Generally, the parameter is set larger when the load inertia is large.
2) Speed loop integration time Pn103, its role is to eliminate the static difference, the larger the value is set, the slower the response, the longer the time to arrive at the instruction. Generally, the greater the load inertia, the greater the integration time should be set.
3) When the upper computer is closed loop, should try not to set soft start deceleration time parameters Pn306, Pn307.
4) If there is no upper computer as a closed loop, it is hoped that the motor will be completely stopped by analog quantity, then zero clamp or proportional control must be used.
5) When the upper machine is used as the position closed loop, the analog quantity cannot be automatically zeroed