Application of Frequency Control Technology in Printing Slotting Die-cutting Machine

It is worth noting that the vector control requires a correct estimation of the motor parameters. That is to say, whether the input motor parameters are correct or not will directly affect the effect of the vector control.
The choice of frequency converter:
After understanding the characteristics of various inverters, we can choose the inverter we need. If open-loop method is adopted, it is better to use ABB's ACS600 type inverter because it adopts DTC direct torque control and its open-loop control accuracy is better than other inverters. If vector control is used, Yaskawa VS-616G5 is used. Frequency converter. In short, the principle of morality to be used to ensure performance, and then consider the price, that is, under the premise of ensuring performance indicators, try to use low-cost inverter.
The circuit design of the system and the setting of various parameters After selecting the inverter, the circuit design of the system shall be carried out. The electrical equipment and electrical wiring of the variable frequency speed control system have been described on the operating instructions of the inverter. The characteristics of the machine, we design its electrical circuit block diagram as follows (Figure 4: Frequency conversion speed control system wiring block diagram);
Power → Circuit Breaker → AC Contactor → AC Reactor → Noise Filter → Inverter → Noise Filter → Variable Frequency Motors Noise Filters can be selected according to the specific conditions (If there is little interference with other electrical equipment, they can be discarded) . Before the variable frequency speed control system is put into use, relevant parameters must be set (in the case of Yaskawa VS616G5 type inverter);
1, motor parameters:
Whether the input motor parameters are correct or not will directly affect the speed control effect (vector control), so the motor parameters must be correctly entered. In addition to the rated voltage, rated current, rated frequency, rated speed, and number of motor poles, these parameters include line resistance, leakage inductance, and so on. For Yaskawa VS616G5 type inverter, it is E1-01-E2-08 parameter. If you do not know the parameters of the motor, you can use the "self-learning" function of the inverter (ie motor identification function) to identify the relevant parameters of the motor by the inverter itself.
The specific steps are as follows:
Drag the device and the motor out → From the learning mode → Enter the motor nameplate parameters (rated voltage, rated current, rated frequency, rated speed, number of motor poles, etc.) → Motor running (self-learning) → Motor stop2, related to the printing press The parameters:
According to the requirements of the printing machine, the relevant parameters need to be modified and set. We set parameters such as acceleration and deceleration time, running output and analog input filtering time; in addition, in order to prevent other personnel from mistakenly changing parameters, it is necessary to set Password so that only professionals who know the password can modify the parameters. When setting the frequency converter parameters, it should be noted that the unclear parameters should not be arbitrarily modified (keeping the factory payment value) in order to avoid unnecessary malfunction. The specific steps for setting related parameters are as follows:
(a) Select environment setting method → ​​Select language → Select hard number access level (recommended) → Exit environment setting mode (b) Select programming mode → Select parameter group → Select corresponding parameter → Modify parameter → Input parameter → Exit programming mode (c) Select environment setting mode → Restore logarithm access level → Set password → Exit environment setting mode → Enter drive mode