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Essential details：DDC4-10-40020 DUPLOMATIC servo drive
Instead of simple amplification, the PLC output is just a square wave, while the driver output is a sine wave. The pulse of PLC can be understood as the work instruction of the servo drive, like the work instruction of the leader, the servo drive is the director who works for the leader, the leader requires the director to do so, and the specific how to do the director still needs to use his own brain. The servo driver can be understood as an AC power supply that can meet the work of the servo motor. When it drives the servo motor, it is not a simple amplification of the PLC pulse directly, but an understanding of what these pulses do, and then simulates the output sine wave through PWM to control the work of the servo motor.
DDC4-10-40020
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sunny He
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DDC4-10-40020 DUPLOMATIC servo drive
General PLC pulse, is PLS pulse, that is, pulse width and interval is a fixed square wave, the number of this square wave, can be understood as “step”, that is, a pulse down, the servo motor to take “one step” (that is, how much rotation Angle), so the more the number of pulse square waves, the more the rotation Angle of the servo motor. Therefore, the servo driver must output the waveform that can make the servo motor rotate how much Angle, but the servo motor can not be simply completed by the motor structure like the stepper motor, it needs to have a position ring to do the closed loop, that is, the pulse of the encoder measures how much the current motor Angle changes, and then adjusts the output voltage and output frequency through PID.
