What is the meaning of the step motor drive half flow setting and attenuation setting?
Stepping drive half flow is mainly in order to reduce the heating of the motor, are generally used in stepping driving system constant current control, which means great electric motor and motionless, flows through the winding current were set according to the current work, such motor in standby, will serious fever, if adopting automatic flow, can significantly reduce the fever when standby. Some drives now have a current size of half a stream and a half current, such as innast's EZM552. The attenuation is mainly aimed at the actuator of the control method of the hysteresis loop, which is divided into fast decay and slow decay. The electric inductance of general motors is more slowly and less than the hour, and if it is a large inductance motor, it will be much more.
Slower than 1:30 has a strong self-locking ability, especially one. The external thrust is 10KG, which is 10/49 = 0.204 KG by the force of the decelerator to the step motor, and if the force of the step motor is more than 0.5 KG/CM, the half flow setting is fully available. The current setting of the attenuated current depends on the setting current size of the step motor itself. (according to the attenuation of adjustable drive) as an example, the current to drive the stepper motor to the case by the maximum current, the attenuation of electric current can be set to 50% or less, if the stepper motor current is small, can set the attenuation ratio of 50% or more.
The current set 0.5 or 0.8 A, the rest set 50% and half stream, the fine fraction if the speed is slow, set 16 segmentation. The attenuation setting is also set up 50%. The mode of attenuation is the result of the four transistors that have been advanced or delayed in the sequence of the driver output of the step motor. Decay time setting refers to the stepper motor stalling after a few seconds (average 0.5 3 seconds), rated current of the motor supply attenuation, without attenuation 75% 100%, 50%, 25%, and several. Mainly is to reduce the motor stopped noise, be quiet after the motor has stopped, and energy saving. Usually the above function, if the stepper motor drives, motor stop automatically after attenuation function of rated current, it could really set the motor stopped, how many seconds delay (s) into the attenuation function automatically. Stepper motor, is actually a generator, spinning process will produce inductive electromotive force, when applied voltage disappears will sub there will be a braking effect on both ends of the motor winding, not short sub is inertia. This is reflected in high speed characteristics (no braking high-speed connection) or low speed properties (vibration).
Stepper motor half flow setting refers to, when you need to step motor work, it is all the work flow, and when you do not need it, in order to keep as external forces lead to stepper motor twist or turn. Need to set it a small amount of current to maintain your moment balance, the can, according to the actual situation, set up corresponding strength and attenuation mean, from the time of maximum torque to the minimum torque or decay. In order to balance your machine, it is not an impact or sudden braking. I hope you understand.
