Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: Cncman2nv on October 21, 2009, 09:19:37 AM
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I have a smooth stepper running automation direct servo system and the trouble I'm having is unable to get over a 500 rpm with the servo motor
even with the max speed set to 3000rpm in sure servo soft and max speed in mach set to 3000 even went as far as setting the steps per unit to
30000 per unit there was a little change but still not right so if any has any ideas pls let me know
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Have you got the frequency in the SS Plugin set high enough?
Hood
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Ya I think so SS plugin rate is set @ 1MHZ also the motor is just set up on the bench i dint actually need 30000 steps per unit i was trying to get extream results the step per u dosent seam to matter after 10000
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Can you hook up a PC to these drives and work from software? I can do that with the drives I have so can tune them without even having Mach connected if I wished. The reason I am wondering is if you can then you could check its working to 3000RPM from the drive as you may be limiting a setting such as the max current etc.
Hood
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Ya I have the config software for the AD drives and I can manual jog the motor @ 3000 rpm thru the config software
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Do you have a scope to see what the SS is putting out?
Also check that you dont have any electronic gearing set in the drive.
Hood
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i looked at the electronic gearing and is set at 1:1 ratio the SS works great for Stepper motors but could i have the wiring between the ss and AD drive not right ware the AD drive See only 1/2 the pluses from the SS controller
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It may be that you have the drive wired incorrectly for single ended Step/Dir signals.
Hood
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I have a smooth stepper running automation direct servo system and the trouble I'm having is unable to get over a 500 rpm with the servo motor
even with the max speed set to 3000rpm in sure servo soft and max speed in mach set to 3000 even went as far as setting the steps per unit to
30000 per unit there was a little change but still not right so if any has any ideas pls let me know
Are you using a breakout board? If so, which one?
Regards,
Ray L.
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the only BOB I'm using is just a plane db25 pin from the SS ribbon cable and the AD zip link board
How should the AD drive be wired for a SS board Because I think i have it wired for single ended Step/Dir signals
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How should the AD drive be wired for a SS board Because I think i have it wired for single ended Step/Dir signals
Afraid I have no idea, you will have to refer to the Sure Servo manual. With the drives I use they can be set up single ended or differential, it is possible the Sure Servo ones require a parameter set .
Hood
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There is an Error in the Sure Servo manual, the written doc on the Optos is wrong, the PIC of the opto wiring is correct.
scott
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Here is a picture of the current wiring I have chosen to use from the AD servo manual pls check this and see if it is the correct one to use
thanks for the help
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Seems to be fine although I would possibly have thought the common should have been tied to the - inputs.
Hood