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Author Topic: Cannot get to 200 IPM  (Read 2860 times)

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Cannot get to 200 IPM
« on: January 04, 2014, 06:31:13 PM »
I have 2 motors on my X axis. I cannot get that axis to 200 IPM. I can get my Y axis with only one motor up to 200 IPM. Motors are kl-223h286-20-8b Drivers Kl 4030 power supply kl-350-36. all by keiling. I also have a smooth stepper usb type running version v17f and mach3 version 3.043.066. Do I need more volts to run the two to 200. Meaning buy another power supply.
Scott
I attached xml file

Offline RICH

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Re: Cannot get to 200 IPM
« Reply #1 on: January 04, 2014, 06:56:28 PM »
Post a link to your power supply and motors.
That will save folks time.

RICH
Re: Cannot get to 200 IPM
« Reply #2 on: January 04, 2014, 07:24:56 PM »
Also, tell us what speed you are getting on X.
John Champlain
Re: Cannot get to 200 IPM
« Reply #3 on: January 04, 2014, 08:01:54 PM »
link to motor 6th one down 425 oz http://www.kelinginc.net/NEMA23Motor.html
link to power supply 36v/9.7a  http://www.kelinginc.net/SwitchingPowerSupply.html

I can get 100 ipm on all axis, 3d machining with no problems. Fastest I can get on the x before stalling 135.

Offline ger21

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Re: Cannot get to 200 IPM
« Reply #4 on: January 04, 2014, 08:38:41 PM »
First, the 425oz Nema 23's are about the slowest ones you can choose, due to their high inductance.

What kind of machine is this, and how are the axis driven?
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: Cannot get to 200 IPM
« Reply #5 on: January 06, 2014, 01:11:13 PM »
Machine is DIY. Axis is direct drive. coupled with a delrin coupler. Lead screw is acme 1/2-10 5 start with delrin anti-backlash nut . Ways are 15 mm Hiwin rail.   
Re: Cannot get to 200 IPM
« Reply #6 on: January 06, 2014, 06:29:36 PM »
I'd look at the voltage when the X axis is moving. I see that the power supply is a switcher and it may simply reduce the output voltage if it asked to supply more than rated current.  I suspect this because you seem to only have the problem with two motors running at the same time. Also has someone else said the motors you have are high inductance so the back emf rises quickly and the torque falls way off as a result.  Lower inductance motors can run faster at the same voltage.

Offline Mogal

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Re: Cannot get to 200 IPM
« Reply #7 on: January 06, 2014, 07:26:21 PM »
I have the same steppers and PSU. (my acme rods are 1/2-10 double starts)
I got the C10 and KL-4030s.

I was having speed issues as well, maxing out at 60ipm before loosing steps.
After much reading I stumbled across this thread:

http://www.cnczone.com/forums/stepper_motors_drives/32284-take_stepper_damper.html

It more then doubled my speeds! Now I'm reliably at 160ipm in my travels.

Chris

Offline RICH

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Re: Cannot get to 200 IPM
« Reply #8 on: January 07, 2014, 05:30:43 AM »
Why is 200 IPM so important to you?

RICH