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  #1  
Old Sun 25 October 2009, 19:37
jehayes
Just call me: Joe #53
 
Whidbey Island, Washington
United States of America
Advice on Wantai Motors

Any advice on the suitability of these motors and drivers? My very uninformed reading of the specs on the motor is that they are close to the favored Oriental Motor at about half the price (or even less when you consider the driver is included.)

Thoughts anyone?

Thanks

Joe

http://cgi.ebay.com/ebaymotors/2-PCS...Q5fAccessories
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  #2  
Old Sun 25 October 2009, 21:56
Richards
Just call me: Mike
 
South Jordan, UT
United States of America
The motors are rated at 20mH inductance. 32 X SQRT(20) = 143VDC. The stepper drivers are only rated at 45VDC. I wouldn't buy the motors and drivers without some serious testing first. From a casual glance, I think that you would be disappointed.
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  #3  
Old Mon 26 October 2009, 11:39
jehayes
Just call me: Joe #53
 
Whidbey Island, Washington
United States of America
Thanks, that is the kind of expert advice I needed. (You can tell I am a stranger (woodworker) in a strange land (electronics) here).

Joe
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  #4  
Old Tue 19 January 2010, 15:37
iclazion
Just call me: Leonard
 
Pretoria
South Africa
Aaahh well R8000 wasted wow that was really quick to be honest. Will let you know what happens when I have them. Pitty I did not find this topic sooner.
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  #5  
Old Tue 19 January 2010, 17:26
iclazion
Just call me: Leonard
 
Pretoria
South Africa
Motors x 4 : http://www.wantmotor.com/ProductsVie...&pid=75&sid=80
General Specifications:
Step Accuracy : +-5%
Temperature Rise : 80C Max
Ambient Temprature Range : 20C ~+50C
Insulation Resistance : 100MΩ Min.50V DC
Dielectric Strength : 500V AD 1minute

Electrical Specifications:
Model number : 85BYGH450D-007
Step angel : 1.8
Motor Length (mm) 94
Voltage Rated : 6.4V
Current Rated : 2A
Phase Resistance : 3.2 Ω
Phase Inductance : 15mH
Holding Torque : 4.4 N.m / 873oz-in “as per forum suggestion anything bigger than 1000oz-in should rather consider a servo. So I made sure to keep it between 800 and 1000.
Lead Wire : 8
Rotor Inertia : 1.7 kg. c㎡
Motor Weight : 3kg

Step Motor Driver: http://www.wantmotor.com/ProductsVie...&pid=75&sid=82
Model Number : 2D-2H086MB
14 selectable resolutions
Supply voltage up to +80VDC
Suitable for-2-phase and 4-phase motors
Output current up to 5.86A
Dip switch current setting 8different values
Optically isolated input signals
Pulse frequency up to 200KHz
Automatic idle-current reduction
Small size (107*97*48),Weight:1KG
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  #6  
Old Tue 19 January 2010, 20:38
riesvantwisk
Just call me: Ries #46
 
Quito
Ecuador
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@all,

if you want to go for a cheaper route then search in the forums, some people have successfully used the motion king motors (50usd each, not including transport) with cheaper gecko drivers, or even the drivers that motionking also is selling.

In reality, buy something that is 'approved' here at mechmate and tested by people here in the forum, or make sure you know what you are doing, but don't go cheap by buying something at ebay!

I strongly suggest check the website www.pmdx.com they have some nice offers, not a lot more expensive then the ebay offers, but more reliable and tested.

Ries
PS: I don't want to sound negative here, or judge your knowledge, I just want to prevent disapointments.
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  #7  
Old Wed 20 January 2010, 05:41
KenC
Just call me: Ken
 
Klang
Malaysia
I second Ries's suggestion. I got stuck at the moment because I misjudge my ability
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