Main applications of stepper motors
Currently, most stepper motors used in computerized embroidery machines are three-phase hybrid stepper motors. The use of microstepping technology can greatly improve the operating quality of stepper motors, reduce torque fluctuations, suppress oscillations, reduce noise, and improve step resolution.
First, stepper motors are mainly used in some applications with positioning requirements, such as: the worktable of wire cutting, the worktable of a tufting machine (pore positioning), and the packaging machine (fixed length). Basically, they are used in any application involving positioning.
Secondly, it is widely used in ATMs, inkjet printers, engraving machines, photo printers, spraying equipment, medical instruments and equipment, computer peripherals and mass storage devices, precision instruments, industrial control systems, office automation, robots and other fields. It is especially suitable for applications that require stable operation, low noise, fast response, long service life and high output torque.
Third, stepper motors are widely used in textile machinery and equipment such as computerized embroidery machines. The characteristics of this type of stepper motor are low holding torque, fast response speed when frequently starting, low operating noise, stable operation, good control performance, and low overall cost.
Precautions for Stepper Motor Application
1. Stepper motors are used in low-speed applications—the speed should not exceed 1000 revolutions per minute (6666 PPS at 0.9 degrees Celsius). It is best to use them between 1000-3000 PPS (0.9 degrees Celsius). A speed reduction device can be used to make them work within this range. At this time, the motor has high efficiency and low noise.
2. Stepper motors should not be used in full-step mode, as vibration is significant in full-step mode.
3. Due to historical reasons, only motors labeled as 12V can use 12V. The voltage values of other motors are not the drive voltage values. The drive voltage can be selected according to the driver (recommendation: 57BYG uses DC 24V-36V, 86BYG uses DC 50V, and 110BYG uses higher than DC 80V). Of course, in addition to 12V constant voltage drive, other drive power supplies can also be used for 12V, but temperature rise should be considered.
4. For loads with large moments of inertia, a larger frame size motor should be selected.
5. When the motor is under high speed or large inertia load, it is generally not started at the working speed, but gradually increased in frequency to speed up. This prevents the motor from losing steps, reduces noise, and improves the positioning accuracy when stopping.
6. For high precision, mechanical speed reduction, increasing motor speed, or using a driver with high microstepping can be used. A 5-phase motor can also be used, but the price of the entire system is relatively high, there are few manufacturers, and the claim that it is obsolete is layman's talk.
7. The motor should not operate in the vibration zone. If it is necessary to operate in the vibration zone, this can be solved by changing the voltage or current or adding some damping.
8. When the motor is operating below 600PPS (0.9 degrees), it should be driven by a small current, a large inductance, and a low voltage.
9. The principle of selecting the motor first and then the drive should be followed.
