Re: [Emc-users] Servo tuning problem

[Peter C. W. <pc...@me...>]

On Wed, 1 Jan 2014, Ed wrote:

> Date: Wed, 01 Jan 2014 16:00:26 -0600
> From: Ed <at...@mw...>
> Reply-To: "Enhanced Machine Controller (EMC)"
>     <emc...@li...>
> To: emc...@li...
> Subject: Re: [Emc-users] Servo tuning problem
> 
> On 01/01/2014 03:21 PM, sam sokolik wrote:
>> is one side of the servo wires getting grounded?  Can you check the
>> continuity of the servo brushes to ground?
>>
>> sam
> I checked and none show a short to ground though Z showed 1.6 Ohms
> across the motor leads and reacts the best and Y shows 1.0 Ohm and
> reacts the worst.
>
>
> Ed.
>

Can you disconnect the motors from the drives (with power off of course)
and drive the motors either way with a battery or small DC power supply
and check for same speed either way (might need 6V or so)

This would determine if this is a motor or Drive/HAL/LinuxCNC issue

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Peter Wallace
Mesa Electronics

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