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27-04-2014 #7
If the spindle is a simple on/off, then you won't need an analogue output.
However the top left board looks very like a KB drive of some form, and there are wires connected to the terminals that would normally have a speed potentiometer connected (they can be controlled either with a potentiometer, or via an isolated 0-10V feed). IIRC the ID/Model label would normally be on the face of the heatsink pointing towards the side of the case/opposite side of the bit where the SCRs are bolted on.
And having just checked the wiring diagrams ( Denford Software & Machines • View topic - MicroRouter Compact 2002 - 2004 Circuit Diagram ), it does use a 0-10V analogue signal. The Baldor controllers that Denford use, are pretty good things and have quite a bit of Inputs and Outputs, including analogue. It's just a shame they cost so much. I think the cost of an upgrade from the model in your router, to the lastest USB version is over £1200. I happen to have the latest USB version in my Novamill, and I've got no plans to swap it as it just works with no issues, and I've just added a coolant relay with minimal hassle.
Another issue I notice in the wiring diagrams, is the micro routers don't have a 24V DC supply. They simply use 24V AC relays, and feed 24V AC into the Baldor, which has it's own onboard rectifier/regulators. Both my Novamill and Cyclone have linear supplies, so they must of gone for the cheaper option when doing the micro routers.
That creates the issue of getting a stable 24V DC supply for any new controller. Cheap option would be a 24V DC din rail switched mode supply, but the ideal option to minimise noise would be a 24V DC linear supply.
Rectifing the existing the 24V AC isn't that viable an option, as you would still need to regulate it down to a consistent 24V DC. AC stuff is usually far more tolerant of voltage variations than DC, which usually has pretty strict voltage tolerance.Avoiding the rubbish customer service from AluminiumWarehouse since July '13.
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