Siemens inverter M430 frequency given programming - Database & Sql Blog Articles

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Check the data to say that the frequency given signal has current and voltage signals. For example, the frequency of 0-10V is given to the frequency of 0-50HZ. When the plc programming frequency is given, it is necessary to convert. The given frequency should be 50HZ multiplied. Is it correct to divide the signal word by 10V (50*word/10)? Is the voltage signal given by the frequency 100V? It seems that there is no, but I can see that the program given by the frequency is as shown in the figure. I think the meaning is 0-100V corresponding to 0-60HZ, I don't know if it is right, please advise the expert. I have asked this picture before, but it has not been resolved. Is the frequency given not only a value, can it be set at any time during the debugging process? It is still a value, once the programming is given, it will be done once and for all. Did not touch the scene, did not touch the inverter, just see the program involved.
Frequency converter frequency reference A: You only need to set the highest frequency P1082 and the lowest frequency P1080 and the reference frequency P2000. The given value 0-10V will be automatically calibrated. For example, suppose your lowest frequency is 0Hz and the highest frequency is 100hz. That is to say, 0V corresponds to 0Hz, 10V corresponds to 100Hz, and there is a linear change between them. Of course, you can also calibrate a dead zone to suppress zero drift. For you to set the value through the program, you can directly suppress the given value in the program. Upper and lower limits. As for the speed can be calculated according to the synchronous speed: 60f / p = synchronous speed, the actual speed will be slightly lower than this value, if there is a slip rate, you can accurately calculate the speed of 60f / p at 100Hz ( 1-s) = rotor speed, but be careful that when the motor is above the rated frequency of the motor, the motor is in constant power operation and the torque will decrease as the speed increases.

1, in the plc programming frequency given, is it necessary to convert, the given frequency should be 50HZ multiplied by the signal word and then divided by 10V (50 * word / 10) -
It needs to be converted, but it is not as troublesome as you think. Just need to give a relative white component of a frequency value. For example: If you want to give a frequency value of 40HZ, and the reference frequency is 50HZ, then your PLC only needs to give: 40X16384/50. (Refer to the reference frequency is 50HZ, that is, the inverter parameters: P2000=50, 16384 corresponds to 100%)
2. Is the voltage signal given by the frequency 100V?
Of course, there is no possibility. Otherwise, the analog input port of the inverter is not damaged by high voltage.
3, frequency given is not only a value, is in the debugging process, can be set at any time? Or is it a value, once the programming is given, it will be done once and for all -
The frequency reference can be fixed and can be set at any time during the debugging process. The setting of this given value is actually a very flexible process.