Practical application cases of drives

A physical picture ：

Application circuit diagram ：

 

Additional explanation ：

q01 and q02 Connected to the plc On the output port of

The holding brake system signal of the stepping motor is connected to plc Of q66 On

k1 It's a plc Intermediate relay for control , It is used to control the power supply of the drive

Two 2.2k The resistance of is directly welded in the circuit

The dial switch will 6.7.8 Set to on

The meaning of this setting can be found in the chart

sw123 yes off, that peak=4.2,rms=3

sw4 yes off, So it's half flow mode

sw5 yes off,678 yes on, that pulse yes 400

The common Yang connection method is adopted here ,plc Control direction and pulse , No enable is used .

peak： Maximum current of the driver , Usually, the maximum current of the driver is slightly greater than the nominal current of the motor . If the driver current is selected to be small , When the load is relatively large, you will lose your step . The driver current is too high ： The greater the inertia 、 Inductance increase , There will be impulse when the motor is running , Cause system imbalance . This is selected according to the actual needs .

rms：peak Is the peak current ,rms Is the mean current , General drives such as EZM552,peak=1.4*rms, There are also some people who press 1.2 Design by multiple relation .

pulse\rev： The number of pulses required for one revolution , Or stepping motor resolution

One 、 speed control
    The running speed of the stepping motor is proportional to the input pulse speed . Fast pulse speed , The motor speed is fast ; The pulse speed is slow , The motor speed is slow .
    The speed of the motor (RPM) And pulse speed (PPS, also called Hz) The relationship is as follows ：
    speed (RPM)= Pulse speed (PPS or Hz)*60( Stepping motor division number / circle )
    
explain ：
1.RPM Is the speed unit of general motor , namely rev/min, Is the number of revolutions of the motor per minute ;PPS For stepping 、 The speed unit of the servo motor , namely pulse per second, Is the number of pulses sent per second .
2. because RPM And PPS Different units of , Therefore, in the process of conversion, you should first put PPS Seconds multiplied by 60 Change to minutes .
3. Stepping motor division number / circle , It also represents the number of pulses that must be sent to make the motor rotate for more than one turn .
4. The disassembled unit of the above formula is ：rev/min=pulse/sec*60*1/ Number of divisions

example ： Five phase half step angle 0.36° when ( namely 1000 Division / circle )
(1) The speed of the motor is 600RPM when , It is equivalent to the pulse speed 10000PPS;
(2) Pulse speed 3000PPS, It is equivalent to the rotating speed 180RPM;

Two 、 position control
  The stepper motor does not require a position sensor (Sensor), The amount of movement can be determined according to the number of pulses input , And deliver the copy to the designated location smoothly and correctly . And the amount of movement , It is determined according to the resolution of the motor and the number of input pulses . Number of pulses (Pulse) The relationship between and the amount of movement is as follows ：
    Position movement amount (°)= Stepper motor resolution (°)* Enter the number of pulses
  example ： Two phase full step angle 1.8° when
  When the input 1000 Number of pulses ( namely 1000Pulse), At this time, the movement amount will be 1800°, Just for 5 circle .

Link to the original text ：https://blog.csdn.net/lvyiwuhen/article/details/122068519