OkiePC
Lifetime Supporting Member
Allen Bradley makes great PLCs, we end users love them so much, we think, "All their other stuff must pretty good...", but in some cases, we'd be wrong.
The speed regulation is marketed as a "percent at base speed*", but it is technically an RPM value that should be considered the max error at all listed speed ranges..., right?
So, if you can measure the fact that they can't meet those published specs...that's heavy ammunition for a settlement, full refund, something big to compensate you, the CUSTOMER, for your expen$e$.
Keith, thanks for the FOC info, I will try to follow that when I get to work.
Dick, thanks for bringing the motor math to the discussion, what about gearing and load inertia? Do those factors need to be mathematized?
The speed regulation is marketed as a "percent at base speed*", but it is technically an RPM value that should be considered the max error at all listed speed ranges..., right?
So, if you can measure the fact that they can't meet those published specs...that's heavy ammunition for a settlement, full refund, something big to compensate you, the CUSTOMER, for your expen$e$.
Keith, thanks for the FOC info, I will try to follow that when I get to work.
Dick, thanks for bringing the motor math to the discussion, what about gearing and load inertia? Do those factors need to be mathematized?
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