Help! Stepper stalls high speed problem?

tommylight wrote:

rodw wrote:

In the OP's case, the simplest improvement he can make is to increase the motor voltage to move the torque curve upwards. Yes, he may still need to increase the size of his motor in the end, but using a 48v power supply is perfectly matchd with his motor drivers. Take the easy win first.

This is the answer the OP should have gotten, thank you.

As I have said I have converted 2 Warco WM 18. A nema 17 will never work I put a nema 23 on one and the other with a 24 pullies 1.5:1 with power supply at 68V with 80v drives that was with ball screws not acme

Sorry Clive, this have gotten out of hand as many, many times before.
And i agree, i also mentioned changing the motor to a bigger one.
Thank you.

tommylight wrote:

rodw wrote:

In the OP's case, the simplest improvement he can make is to increase the motor voltage to move the torque curve upwards. Yes, he may still need to increase the size of his motor in the end, but using a 48v power supply is perfectly matchd with his motor drivers. Take the easy win first.

This is the answer the OP should have gotten, thank you.

He did in my very first post on this thread...

Yes, i know, but under it is still the statement that voltage quadruples torque, that is still missing the "at higher speeds" parts.
As it stands it is not a valid statement.

As for my cnc I use 24V because when I supply 48 then mototrs become very hot. Of course, there is losses in maximum power but I adjusted the motors for this power. For example:
- reduce maximum pulse/rate
- reduce speed.
When cnc make some process, it doesn't need speed more then 25mm/sec only when moves on G0 command.

aleksamc wrote:

As for my cnc I use 24V because when I supply 48 then mototrs become very hot. 

You might find that 48V with the stepper drivers set to a lower max current gives a better balance. 

Also, stepper motors are allowed to be very hot. Certainly too hot to touch is still fine. The actual limit is something like 105C, though you probably don't want to go that high.