Servo system pg crossover ratio defined

The PG divide output is the distance that feeds back the actual positioning of the motor, triangle.

Represents a line drive. The number of pulses output at the PG cross-division output when the motor rotates for 1 revolution is related to the PN210 setting value.

Check whether the motor knows whether the command pulse has been executed, and you can see whether the positioning completion signal is output.

Or call 400-821-3680, Yaskawa Inverter & Servo Technology**. Hope!

err: Command pulse frequency doubling anomaly protection:

The number of command pulses rotated 1 revolution, the frequency division and frequency doubling ratio set by the 1st and 4th instruction division frequency doubling numerators, and the instruction division frequency doubling denominator are incorrect.

The assigned multiplier value for each instruction pulse exceeds the equivalent of about 157 mpps (10,000 r.m. for a 20-bit encoder).

The command pulse input is sparse.

False counting is caused by noise mixing in the input of the command pulse.

Processing: Set the multiplier ratio of the instruction division to a range of 1 1000 1000 times, and set it to a small value as much as possible.

Confirm the pulse input.

If possible, use a serial drive line.

Try setting the command pulse input max setting to less than 1000 and set the digital filter to active.

The vast majority of servo systems do not have the function of frequency crossover; The frequency division ratio (frequency division ratio) of the servo drive refers to the "number of steps" that the motor needs to take to complete the inherent step angle of the whole step after the servo motor (the resolution of the encoder) is "subdivided" (this is the same as the subdivision concept of the stepper motor), to put it bluntly, the frequency division is to "amplify" the inherent resolution of the encoder, for example, the inherent resolution of the encoder is 2000 lines, and if there is no frequency division function, the inherent step angle of the motor is 360° 2000=, That is, a pulse can make the motor turn; If there is a frequency division function, when the frequency division multiple is 2, the "number of steps" required for the motor to turn the inherent step angle is 2, that is, the motor needs 2 pulses to turn at this time, then the real step angle at this time is that the motor only needs to turn the encoder to send a feedback pulse to the driver, then the motor rotates once, and the encoder sends 360 ° feedback pulses to the driver, and the real resolution of the encoder is 4000 lines at this time, and the resolution is magnified by 2 times), Therefore, the use of frequency division technology can improve the angular accuracy (resolution) of the motor; After the frequency division, because the real step angle is reduced, so the host computer sends the same number of pulses, the angular displacement of the motor is reduced when the frequency division is relative to the non-frequency division, then the motor speed is also relatively slow down (the time corresponding to the angular displacement is determined by the pulse frequency sent by the host computer), so the speed of the servo motor can also be adjusted by using the frequency division (but it should be noted that if the number of pulses sent by the host computer is not changed, the motor positioning will be inaccurate, and the position will deviate).

A differential circuit is only used for more precise control.

Servo drives, also known as "servo controllers" and "servo amplifiers", are a kind of controller used to control servo motors, which is similar to the role of inverters acting on ordinary AC motors, which is a part of the servo system and is mainly used in high-precision positioning systems.

Servo drives are widely used in the field of injection molding machines, textile machinery, packaging machinery, CNC machine tools, etc.

Do you say the encoder's crossover output? If so, then the output frequency of the encoder Dividing Ratio = Actual Output Frequency.

Crossovers are usually used in conjunction with counting units.

The precrossover ratio works before the value of the counting unit changes (if the counter is not prescaled and the counter is added by 1 when each rising edge arrives, and now a prescaler with a crossover ratio of 1:2 is used, then the counter will not be added by 1 until both rising edges arrive).

The postscaler functions the same as the prescaler, except that it works after the counter value changes. For example, if the TMR2 rear divider is not used, once the counter overflows, it will be immediately set to TMR2IF, but if there is a 1:2 rear divider, it must be set twice after overflowing.

The vast majority of servo systems.

When there is no crossover function, the crossover multiple is 1 by default;

If the servo does not have a frequency division function, the actual number of pulses required for one revolution of the motor is equal to that of the encoder.

The resolution, which is fixed; If there is a frequency division function, then the actual number of pulses required for one turn of the motor = the resolution of the encoder Frequency division multiple, for example, the resolution of the encoder is 2048 lines, and the frequency division multiple is 2, then the actual number of pulses required for one turn of the motor = 2048 2 = 4096, that is, if the frequency is not divided, 2048 pulses can make the motor rotate once, and after the frequency division, 2048 pulses can only make the motor rotate half a turn;

From this, it can be concluded that the frequency division is for the resolution of the encoder, and the frequency division is for the feedback of the encoder to the servo drive.

The number of pulses is further subdivided (i.e., the resolution of the encoder is amplified), so the angular accuracy of the motor can be improved by using frequency division. The larger the frequency division multiple, the more pulses the motor needs to be compared to the non-frequency division, and the motor speed will be slower. The opposite is the faster, so the use of frequency division can also be on the servo motor.

Speed regulation (but if you do not modify the number of pulses sent by the host computer, the positioning will be inaccurate, and the position will be deviated).

A differential circuit is only used for more precise control.

It's how many times the output of the frequency divider,

The frequency division in the numerical control system is generally not adjusted, compared with the manual, each is different, for example, the default is 1, you change it to 10, and the pulse becomes one-tenth of the original. The location is not allowed to indicate your drive.

The parameters are incorrect, and the pulse emitted by the numerical control corresponds to the coordinate axis.

display, for example, is a pulse.

Of course you can, 32-bit counting, 2 to the 32nd power.