[CAD_CAM_EDM_DRO] AC Servo's (Leadwell update)

In message <42FEA29D.8000409@...>, Jon Elson
<elson@...> writes

Jon

>>Drives do seem to have a 10v analogue input, Marked up in the manual For
>>Testing Only.
>>
>>
>Well, a bunch of the drives have 10 V analog input for current limiting.
>But, if it has a bipolar input for velocity command, then you should be in
>business if you can just put the drive in test mode.

Well powered the machine up today.

Seems to me the fault actually lies in the Spindle drive (Mitsubishi
FR-SFJ-2-2.2). Due to the comms protocol between all the drives, if
one faults they all fault into E-Stop.

VFD appears totally dead though it's getting it's 220 3p ok.

I think this is going to be pretty costly to replace like for like.
I'll test the motor on another inverter next week. Bypassing the
control.

I found some servo drives handled by a local firm, which I may make some
enquiries about.

http://www.elmomc.com/products/elmo-digital-servo-drives-main.htm

Any opinions or experience of these?

Work ahead!

Wayne....
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Wayne M Weedon Email: wayne@...
Fdos Design Poole UK
Tel +44-1202-677025 Fax +44-1202-770515 Mobile: 07774 439915

Specialists in small batch & Production Mechanical/Electrical Engineering
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