博文

目前显示的是 十一月, 2019的博文

How to size stepper motor power supplies?

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Stepper motors are sensitive to the performance of their power supplies. Stepper motor power supplies can affect: When sizing a power supply, keep the above points in mind and remember that the drive type and method of operation influence which power supply is most suitable. Manufacturers offer integrated linear stepper motors that combine drives and controllers. This one by AMCI takes a power supply of 3.4 A. When sizing a power supply, ensure that enough power is available when needed — but remember that an overly large supply wastes power. Note that when it comes to a motor’s rated voltage versus voltage supply, there’s not much concern unless the power supply runs near the drive’s maximum rating. If this is indeed the case, then there’s a risk when decelerating the motor. The load’s momentum stores energy that must be dissipated. The drive can’t do this, so the energy returns to the CNC power supply . This in some cases can overload the power supply and make it fail. So e...

FAQ About Stepping Motors and Power Supplies

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We get a lot of questions about what stepper motors and CNC power supplies to use, so we've started this page. A lot of this information is scattered over the rest of the wiki, but it's nice to pull it together in one place. General NEMA17 versus NEMA23 TinyG is capable of delivering 2 amps per winding, and 2.5 amps per winding with cooling. Given that, we have never found a NEMA17 that would not work with TinyG, and almost every NEMA23 we have tried will work if rated up to about 3 amps per winding (with the caveat that you might not get full power if it calls for more than 2.5 amps). We also routinely run NEMA34 's, but not at full power and therefore not in high mechanical load situations. What's with the motor's rated voltage? The question comes up - can I run a motor with a rated voltage of 4.2 volts (for example) with a 24 volt supply? Will this burn out the motor? The motor's rated voltage is irrelevant and can be ignored. Any stepper motor...