Re: Need source for DC axis motors
Also Tach's were also originally used on DC motor/drives, these had two loops to tune, the inner loop (tach) and the outer loop position loop This resulted in voltage feedback mode rather than the now preferred current/torque mode.
The AMC AMC BE25A20 are nice transconductance/torque mode drives, but they have +-10v analogue input control, however.
They are very easy to integrate with the right controller that has the right analogue output signal as they are non-intelligent drives, just simply amplifiers.
The DC treadmill motors that are made by Johnson make nice servo motors with the addition of an encoder, as they have a rear shaft also to accommodate it.
AMC have, or at least had some drives that were capable of using these.
A little bit of a pity, AMC has dropped many of their products in favour of digital control. Together with Galil, made a nice control system.
CNC, Mechatronics Integration and Custom Machine Design
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