mark roberts
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You would need a new vfd if you want it to run 240v in. You would also have to check the motor is dual voltage
- Thread starter Joe84
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Hopefuldave
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Re the VFD, I hacked an ABB to think it has 480v (within its spec) when run from 240 - if it's out of warranty you only need worry about 1) whether it has the (usual) two banlks of reservoir capacitors and 2) whether it has phase loss sensing* that'll shut it down. The actual mod (if 1) is ok) costs a few pence, but needs a drill and a soldering iron among your tools, and a brass bolt, washers and nuts... It does invalidate all approvals, possibly causes a bit of radio interference, may contribute to Gerbil Warming for all I know! The reservoir capacitors have a bit of a harder time, usually when they get a bit "end-of-life" it'll start throwing up undervoltage alarms so you know when to order a set of replacements....
Dave H. (the other one)
*if so, the book will tell you there's an error message that says it's lost a phase
Interesting ... 240v to 480v transformer on the input or voltage doubler with caps & diodes?
Hopefuldave
Intergalactic pot-mender
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Assuming two reservoir capacitors in series to make the rating (very common!), find the common point where + of one joins - of the other, find a nice big area of copper connected, apply the neutral (I put a 2BA brass nut and bolt through a drilled hole, soldered to the copper,, then a ring terminal and washer and nut) - the bridge rectifier will do the voltage doubling for you, charging each cap to around 320v (peak) but only for half a cycle (wise to take live to two of the phase inputs as it's kinder to the rectifier diodes) - hence they have a bit of a harder life! The ABB I hacked is rated for 5HP, motor power is 3HP, so far no problems
My RPC has a transformer feeding it to power mill/TIG/Big Drill, also a bit of a hack - old oil-cooled welder (which turned out not to have a 415v tap to use as an autotransformer, dammit!) with the welding winding stripped off, 3D printed bobbin and new 415v secondary - also no problems so far
Dave H. (the other one)
addjunkie
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Is that connection diagram for the vfd?
@addjunkie yea it's inside the casing, but I've a feeling it's the one diagram for for both units I.e either the 3phase or single phase.
addjunkie
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Id be looking for a manual for what you have, before buying another with a 240v input. And Id not be running a lathe at 3000rpm until I was fully sure what I was doing. The crashes are always bigger at speed with cars, bikes and lathes
HughF
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Dickson tool posts are skip fodder in my opinion. Hateful things that never do up tight and have far too many sticky out bits to skin your knuckles on. Wedge style aloris copy or multifix are the only way to go imho.
I've got the manual, I don't think it will be of any use to me tbh, I'll have a buddy that works around 3phase industrial setups take a look for me.
As for the 3000rpm the variator was removed so I'll be lucky to see 2000rpm maybe.
I'll be taking it slow though anyway, that's if I ever get any tooling first!
Agroshield
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As you are recommending these to him, could you suggest sources from which he could obtain them. In particular, in recent years, the Multifx stuff has been hard to obtain at a reasonable price. We do not want to send him off looking for a white elephant.
HughF
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Wedge style aloris comes from either rdg or chronos. And the fake multifix come from AliExpress.
Agroshield
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It states D3 camlock but says it fits a Student or Master, which are not D1-3.
The product code is a Sanou one for D1-3, so hopefully, it is only an incorrect fitment description.
HughF
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Sell the dickson to someone with more money than sense on ebay, and buy yourself a wedge type - that's a decision made for you right there
.... p.s, you're welcome
addjunkie
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Im not a fan of the Dickinson either……Sell the dickson to someone with more money than sense on ebay, and buy yourself a wedge type - that's a decision made for you right there
E T
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Apparently PeWe tools in Germany make a good quality mutifix style toolpost.
Not very cheap, but affordable.
No hands on experience though.
Not very cheap, but affordable.
No hands on experience though.
Schnellwechselhalter nach Multifix System
Wir haben uns hochgradig auf Messsysteme für Dreh-, Fräs- Bohrmaschinen sowie auf Schnellwechselhaltersysteme (nach System Multifix) spezialisiert.
pewetools.de
I might have to do thatSell the dickson to someone with more money than sense on ebay, and buy yourself a wedge type - that's a decision made for you right there
