Selection of Power Supply for Stepper Motor and Stepper Drive
The stepper drive is designed for different specifications of stepper motors, and the driving products with different signal specifications have different working voltages, such as:
For the two-phase hybrid stepper motors of series 20/28/35/39/42, we recommend our EO432 or ES4D driver with a rated working voltage of 12-30VDC and 12-50VDC. We recommend using a working power supply voltage of 24VDC. For special applications, 12VDC can be used directly;
For the 57/60 series two-phase hybrid stepper motors, it is recommended to use drivers such as EO542/EO556, with a rated working voltage of 20-50VDC and a recommended working power supply voltage of 24-36VDC;
For two-phase hybrid stepper motors such as 57/60, users need higher voltage to run at high speeds. It is recommended to use the EO556 high-performance version or ES6D driver, with a rated working voltage of 12-50VDC or 24-80VDC. It is recommended to use a working power supply voltage of 48VDC, and the output current of the driver should be set one level lower than the rated current of the motor;
For the 86 series two-phase hybrid stepper motor, if using a switching power supply, it is recommended to use the EO872/ES8D driver with a rated operating voltage of 24-80VDC and a recommended operating power supply voltage of 48-60VDC;
For the 86 series two-phase hybrid stepper motor, if a linear power supply is used, it is recommended to use the EO860AH/ES8AH driver with a rated working voltage of 20-80VAC and a recommended working power supply voltage of 48-60VAC;
For the 110/130 series two-phase hybrid stepper motors, it is recommended to drive DM2272 with a rated working voltage of 220VAC and a recommended working power supply voltage of 110-220VAC. If the input power supply voltage is 220VAC, it is recommended to add a 220/180 input transformer;
When selecting a matching power supply, users should choose it based on the rated working voltage range of the driver. If users want to work under higher voltage conditions, they should ensure that the peak voltage ripple of the driver does not exceed the highest rated voltage of the driver. Users can reduce the current ripple by increasing the capacity of the power supply and the filtering capacitor or external electrolytic capacitor for power rectification. When selecting a power supply, users should consider that under emergency braking conditions, the motor will generate a large pump up voltage, and ensure that the power supply voltage of the driver does not exceed its maximum allowable working voltage.
If using a regulated switching power supply, attention should be paid to setting the output current range of the switching power supply to the maximum.
Users must pay attention to:
1) When wiring, be careful not to reverse connect the positive and negative poles of the power supply;
2) It is best to use a non regulated power supply;
3) When using a non regulated power supply, the current output capacity of the power supply should be greater than 60% of the driver's set current;
4) When using a regulated switching power supply, the output current of the power supply should be greater than or equal to the working current of the driver;
5) To reduce costs, two or three drives can share the same power supply, but it should be ensured that the power supply is sufficiently large.
The power of the power supply principle: power greater than voltage*motor rated current*0.7W,for example:48V*6A*0.7W equal to 202W,so a 300W,350W and 400w is enough.