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23-04-2013 #1
Again, thanks for the info.
Looked at the range of servos you've got, a 750W would work well I think. One other reason why I was looking at DC servos is that I already have a stepper motor, which will need it's driver and a power supply. That means loads of components, wires etc.
Regards,
dsc.
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23-04-2013 #2
Yes the CD422 is the smallest AC servo we do, but can be configured to use the SME60 range of motors that are either 200W or 400W.
Visit Us: www.automationshop.co.uk
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23-04-2013 #3
Gary,
good stuff, looking at the specs the CD422 can do upto 750W, so I'll go for a CD422 + 750W AC SMH80 servo.
Regards,
dsc.
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23-04-2013 #4
That's a big motor, with a 3:1 ratio that would be a continuous torque of 7.17Nm and a peak of 21.33Nm at 1000 RPM.
Thats a big jump up form 400W.Visit Us: www.automationshop.co.uk
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23-04-2013 #5
I know Gary, but with the smaller 400W motor the peak torque is 3.82Nm and with a 2.5:1 ratio, this gives me less than 10Nm peak. From the tests I've done I need around 12Nm, so I'd rather go slightly bigger and later on downgrade. Plus the price difference between the 400W and 750W is almost nothing, size-wise it might matter, so I'll have a think about it.
Regards,
dsc.
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