VFD-Variable frequency drives for my beautiful drill- advice please (1 Viewer)

[bubble63]

I have a fantastic old Elliot pillar drill

but its 3 phase
I had been using it on a converter that I rescued [brand new] from a skip [I think it may have been a VFD but not sure]
After years of great service the converter started to trip the main earth leakage so I returned to that place, a skip
So... I need to run my 3 phase drill on my 240 single phase supply

Straight forward 3 phase converters are more than the drill is worth

Would this unit below do it?
Link Removed

I have searched and found people just using capacitors but that seems a bit heath robinson

Any advice from the collective appreciated

 

[hchris]

should be fine as long as your motor is duel voltage 410v and 220v three phase if it is you will need to change some links in the motor if it's been run on 415v three phase.
Post a picture of the motor plate and the connections in the terminal box of the motor.

Chris

 

[Jaws]

A bit of lateral thinking.. Why not replace the motor ?
That is what I did on my lathe.. Plenty around ( lots on eBay and cheaper than the converter ! )

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[jockaneezer]

I put a single phase motor on my Elliot years ago, it also has a foot mounted switch which is a real boon.
When you look at modern offerings of Chinese machine tools you have to wonder how many of them will stand the test of time ?
I am on the look out for a converter for my recently acquired surface grinder as the motor is integral with the head casting so can't be changed.

 

[bubble63]

A bit of lateral thinking.. Why not replace the motor ?
That is what I did on my lathe.. Plenty around ( lots on eBay and cheaper than the converter ! )

The shaft is a awkward size.
I can only find a motor that fits at a cost of £180 plus switch

The cheap machine mart ones are metric

Hey ho

 

[Jaws]

The shaft is a awkward size.
I can only find a motor that fits at a cost of £180 plus switch

The cheap machine mart ones are metric

Hey ho

What is the HP and is it belt drive or is it cog drive ?

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[MikeD]

I put a single phase motor on my pillar drill - Not as much power but works a treat.

 

[bubble63]

What is the HP and is it belt drive or is it cog drive ?

I'll have a look tomorrow

 

[Enword]

What is the HP and is it belt drive or is it cog drive ?

Belt

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[bubble63]

Belt

LOL
Yep it's a belt
It was the HP I was going to look at

 

[Enword]

LOL
Yep it's a belt
It was the HP I was going to look at

Damn good Drill's

 

[Jaws]

Ok.. in that case why not get a replacement motor ( as I said, several on fleabay both old and new ) and if need be get a replacement pulley wheel ?
They are cheap as chips and can even get new ones with no hole drilled at all, so you can drill the shaft hole your self and cut the key way.. no worries
I am away tomorrow but I do have a couple of motors sitting around.. I doubt they will be the right power to be honest but if one of them is, you can have it for postage costs..

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[Steve and Denise]

I hae a spare 220 single phase motor and switch from my lathe if you want I will photo and mesure the shaft.

 

[tonyidle]

I changed the1ph motor on my pillar drill to 3ph just so I could use a VFD. No belt shifting, smooth running, soft start, braking, instant reverse, no comparison. Stick to your original idea - if you have been used to VFD going to 1ph will feel like a step backwards.

 

[bubble63]

I hae a spare 220 single phase motor and switch from my lathe if you want I will photo and mesure the shaft.

my motor is foot mounted. 15.8mm = 5/8"shaft
1/2 hp
neil

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[bubble63]

I changed the1ph motor on my pillar drill to 3ph just so I could use a VFD. No belt shifting, smooth running, soft start, braking, instant reverse, no comparison. Stick to your original idea - if you have been used to VFD going to 1ph will feel like a step backwards.

Its funny but thats where I started
I don't have a wiring diagram for the motor, does the wire polarity matter, motor terminals are labeled 1 to 6 with links on three of them?

 

[bubble63]

What is the HP and is it belt drive or is it cog drive ?

1/2hp belt 5/8 shaft

 

[andyman]

After years of great service the converter started to trip the main earth leakage so I returned to that place, a skip
If your supply is on a RCD it is not uncommon for it trip when using a VFD.
Sometimes it will trip sometimes it won't.
So a new VFD may not solve the issue you mayneed to change the RCD.

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[Steve and Denise]

This one is1/4kw but has a 15.8 shaft comp with Fwd/Rev switch

 

[bubble63]

Thanks Steve
I am away for the weekend now so can I get back to you on Monday

Neil

 

[jockaneezer]

My motor's 550 Watts ( roughly 3/4 hp) and 2800 RPM. I run it mostly on the second smallest motor pulley and just toggle between hi and lo on the gearbox, does most things I want but like Tony says a VFD would be of benefit.

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[Jaws]

Neither of the motors I have are any good.. both rated at 1/4 horse :-( Sorry

 

[bubble63]

Neither of the motors I have are any good.. both rated at 1/4 horse :-( Sorry

No probs John
Thanks for looking

 

[bubble63]

View attachment 140731 View attachment 140732 This one is1/4kw but has a 15.8 shaft comp with Fwd/Rev switch

Haven't forgot you
Back now I will have a shufty

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[bubble63]

so an update..
After thinking long and hard and been offered a motor [thank you!]
I have ordered one of these
Link Removed
and some 4 core cable

question , is there any particular way to connect the three phases to the motor as I have never worked on 3 phase?

N

 

[andyman]

Are you sure this is single phase to three phase.

 

[bubble63]

Eerr yes I think so , why?

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[andyman]

It doesn't say single to three phase. Very cheap if it is.

 

[hilldweller]

It doesn't say single to three phase. Very cheap if it is.

Scroll down, look at the schematic.

 

[bubble63]

that was what i went from, but I agree its not mega clear

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