Member postings for Ian Parkin

My supplier calls them weld on hubs

I’m in sheffield if you get stuck

Try bolting the vice to the table and make sure that the table is locked to the pillar

Sorry stand corrected but cheapest in the Uk seems to be £700 from china £350 so hardly Lidl price territory

Can you show a link to a plasma/welder?

Nigel b

plasma cutters and welders are very different in operation and currents I’m not aware of any dual purpose machines at all

plasma’s are generally in these small hobby machines only 40 amp

mig welders you want 80+

It will be interesting as to what turns up in store as the description is all mig wireless welder and the pics all plasma cutter

Edited By Ian Parkin on 12/01/2020 18:47:41

Why is this Steviegtr?

Well those photos are of a plasma cutter

Steviegtr

so just to be clear

a 750watt motor running delta connected to a single phase VFD outputting 240v

and a 750 watt motor running star to a VFD outputting 415v but fed from 415 3 phase

which one has more starting torque? And why?

And Like NDIY i have run many 415v star connected motors of a single phase VFD outputting 240v with no apparent detriment

Your thermal overload may only be thermostat in the windings it’s hard to see from your photo how many wires dive into the motor itself

your current is marked as 6.9 so you need an overload say about 7.5 or so

I wouldn’t bother with any washers on that job if you have bought cap head screws (alum) allen heads?

i would use a touch of locktite on the threads

Clive

the round cylinder mounted on the side is a capacitor which kicks the motor to start in the right direction.

that motor you have is a French one ..they always seem to be able to do things electrically differently than anyone else.

the switch is a contactor with a rotary start switch and it only relies on the plug fuse for overload protection

a modern starter has a thermal adjustable trip to protect the motor better.

its best to look after that motor as it will be difficult to replace.. as its double ended ?

Clive

you can wire in as many stop switches as you desire in series with the stop switch in the diagram.

its always best to put an overload in as well with a motor (although one wasn’t there with original switch)

I didn’t mean a pendant coming down from the ceiling (though nothing wrong with that) just a small box with start and stop buttons on a trailing wire and a magnetic base so it can be stuck somewhere convenient whilst you use the part of the combination machine you need

The original switch is a nvr so Daveb,s suggestion won’t work.

i would replace the switch with a contactor and then place as many fixed stop switches around the machines as you feel you need

then have a start and stop switch on a pendant that you can place next to the particular machine you are using

The idea of having fixed stops is so you can be sure you can get to one in a panic if the pendant moves

Edited By Ian Parkin on 03/01/2020 06:16:42

Mark Atkinson

this is the one you need

They seem quite rare on ebay they tend to go for north of £50

not sure what burnard would want?

Ask NDIY to knock you one up in a spare minute

They are fx series

Steve

i’m sure that the battery’s have been totally flat for years

the dates on the ones i removed were 95 and 03

machines been switched off every night for years

Mike

no nothing.... backup or means

just strange that 2 machines in different locations have done the same within days of each other after working fine for years

just coincidence?

we will have to get machines agents in

Edited By Ian Parkin on 02/12/2019 21:15:17

Has anyone any experience with Mitsubishi plcs

i have 2 machines both very different which have both got the same problem

the plc isn’t running and the prog light is flashing.

both batteries were long dead operators say they been like that for years.

i have replaced battery’s so that error has gone

both machines have operated for years perfectly well one for 25 years the other 15 years

do they lose the program? Is that what’s happened here?

Did you start the lathe with the red ball hanging over the end of the splash tray and start power feeding towards the chuck?