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    Spindle failed to stop - Arrow 750 - Acramatic A2100 - Kolmorgen drives

    Hi all. Thanks for taking the time to read my query. My spindle will run and stop just fine up to 850rpm but any speed above that and the regen resistor kicks and slows the spindle slightly but then cuts out and allows the spindle to coast to a stop. I have had a look through the parameters and...
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    Arrow 750 - regen resistor glowing red hot.

    I was sitting in front of my Arrow 750 the other day, deburring a part, when the external regen resistor burst into flames. I quickly hit the emergency stop and the flames died down and the resistor cooled off. The next day I was able to make the spindle do its thing. i.e. spin and stop as it...
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    Making parts with Cindy

    Thought I'd show some bits I'm working on with the old girl you lot helped me get up and running after stealing her for £1020 on ebay. She still has her quirks, but I'm making chips for sure! This is Op 1 of a dropout I am machining for a friend. I also made those jaws and Tallon Bites. I'm...
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    Increase memory - Acramatic A2100

    Running into the problem of not having enough storage space in the programme memory. 250kb is the max and I just ran one toolpath from Fusion on a 30mm diameter that came out at 210kb... I've had the odd go at drip-feeding the code, but would be super nice to have more storage space. The hard...
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    Cincinatt Arrow 750 - Spindle alignment - Motionlink software

    Hi All, I recently had the spindle drive repaired on my Cincinnati Arrow 750, Acramatic A2100 Control, Kollmorgen drives. The spindle seems to align correctly during the initial homing of the machine, but when I go make a tool change it comes up with Alarm 39-92 Remedy: Correct device...
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    Cincinatt Arrow 750 - potential spindle drive death

    Hey guys, recently acquired an Arrow 750 and thanks to the grand help from folk on this forum I managed to get it up and running and made few bits with her, but I've now run into spindle problems, it intermittently won't run. The problem just came out of nowhere, or it might be attributed to a...
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    Help transfering files - Acramatic A2100 - Arrow 750

    Hello Practical, around about this time last year I started out my CNC adventure with a little Chinese CNC engraver and Mach 3. Well, I've taken a bit of a step up thanks to some crafty ebaying and a big dose of naivety and got my hands on a... well you already know because you read the title. I...
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