On Wed, 2 Nov 2011, Andrew wrote:
> Date: Wed, 2 Nov 2011 21:59:56 +0200
> From: Andrew <[email protected]>
> Reply-To: EMC developers <[email protected]>
> To: EMC developers <[email protected]>
> Subject: Re: [Emc-developers] Linear scales
>
> 2011/11/2 Peter C. Wallace <[email protected]>
>
>>> Should I just multiply 5.9 * 1m/s to get the voltage or it's more
>>> complicated and other parameters involved?
>>
>> Since that is RMS you need the Square root of 2 in there so 8.3V minimum.
>> but
>> you also need to get the peak current through the winding resistance at
>> maximum velocity to you need to add 6.9 Amps x 3.4 Ohms = ~24V so about 32V
>> overall
>>
>> Peter, thank you very much!
> I guess, HV version of 7i39 fits better here?
Yes its quite close (7.5 A current limit) 48V should get you to about 3M/S
at max force (maybe when you have a mistake!)
>
> Andrew
>
Peter Wallace
Mesa Electronics
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