Bradbury series 40 4 post lift manual

[alfapat]

Ah OK ! I think I got that hp wrong, sorry , in fact I don’t know where I got that from .
Ok so it’s star from what you say, how many amps would that be on start up load and can a VSD do this please. To add I have no power source at the moment so would a gen do it.

 

[ruud00000]

If i read correctly the plate says 220 or 240 V, not 380V? So a 220V generator that supplies well over 2.2kW peak and 9.15A should work. Since this is not 380 but 220 you should not use star but delta configuration, as far as I know. A 12A 2.2kW 220V 1-phase to 3-phase VFD should work for this.

 

[alfapat]

Ok thanks , the plate is a little blurred , and does read of my original pic it does read v 220-380 then directly accross v 240-415 , why is that , I ‘m confused a little!

 

[ruud00000]

That would mean the motor is designed to run on either 220 or 380 V. Which means if you have 380V supply you choose to wire star configuration and if you have 220V you choose for wiring in delta configuration. 380 V would be preferred, for more torque, but if not available 220V will do.

 

[armalites]

I run my 3ph 4 post on a VFD. Normally there will be switches on the hydraulic valve that you will need to use to operate the VFD. You will also need to make sure the motor turns in the correct direction.

 

[alfapat]

Ok , great , I feel like I’m getting somewhere. The VFD I bought is a 12amp input , so not sure if it’s enough. What VFD have you used or using please.Please see below, what is your power supply to your VFD. 16 amp? Thanks for your help so far , I will probably be back!

 

[armalites]

You just need to buy a VFD to match the motor but I would advise getting a bit of head room. So you have a 2.2kw motor you need to get a 2.2kw at the very very least but ideally the next one up. Ramp motors don't run for long periods but they do start up with a full load.

They have a huge array of settings and whilst you can get them running with minimal config there are some settings that will need to be tweaked.

My VFD is configured to run my 2 post and 4 post. They both run a different set of parameters speed wise and I have a switch to switch between the two.

Mine is a Jaguar IMO I-drive which cost quite a bit when I bought it. You couldn't buy them for £60 like you can now.

 

[alfapat]

Are these the swtches you mean to operate the hydraulic valve, please . This is the standard box on the Bradbury as it stands.

 

[armalites]

Unfortunately a VFD isn't going to get you up and running(unless you spend a chunk of money on a plug and play model). All the VFD will do is drive the motor once you've put it in the correct configuration. You are going to have the same issues I had on my 2 post. All the controls are electronic and will most likely be 24V so you will need to get a 1ph 230/24v transformer to run the controls that trigger the contactor and use that to trigger the VFD to drive the motor. You will need to have a good idea how the system works or have a wiring diagram to have a chance of getting it to work.

My 4 post has a simple hydraulic valve with a lever and micro switches so it was pretty simple

 

[alfapat]

OK, thanks , This system also has a hydraulic valve , just to let it down , so it sounds more involved. Just a bit different, now so will have to think further , ......confused somewhat.

 

[armalites]

The valve will have a solenoid on it, as you say that is what lowers the ramp. There will 24v triggering the contactor that would normally power the motor. One you get your head round it's all pretty simple. 24v controls are part of the CE coding. My 2 post has 24v AC and DC just to add to the confusion.

In simple terms originally the ramp would have 3ph coming in. 1 or 2ph will be powering a transformer to provide 24v. The switches then feed 24v to the release valve and locks or contactor which in turn run the pump. Assuming it's the same as my 2 post. The 24v will also control the limit switches.

What I tried to do is configure mine by changing as little of the original config as possible to it would be easy to go back to 3ph if I ever got rid(yea right like that's ever going to happen )

From a test point of view you can just run the motor/pump direct from the VFD to check everything works. It should have a manual release on the valve but if it has mechanical safety locks that are electronic controlled you may need to operate these manually to.

 

[alfapat]

A minefield !

 

[alfapat]

So my VFD ARRIVED AND THE SUPPLIER SAYS IT UNSUITABLE FOR MY NEEDS!
Fair enough so my option would be to find a single phase motor , change the contactor if its a 400v to 230v and change the transformer from 400-230v /24v for safety switches .

It would take a large generator though so My workshop has a number of 13amp circuits including a 16 amp one . Take one of them and combine them with the 16amp This would fulfil the load requirement at 32 amps fused, Am I thinking correctly?

 

[armalites]

It's all pretty simple once you get your head round it. My 240/24V transformer cost about £20 from a local electrical wholesaler.

Are you able to send the VFD back and get a higher output one?

 

[alfapat]

I think from talking around its still a VFD would be the simplest, but no the same supplier could not supply a suitable one . I am able to get a refund , deling with chinese solutions can be dodgy , so I will look at UK .
Can you , or are you able to tell me what sort of Invertor I should be looking at given the information on the motor plate. (thread 21)

 

[alfapat]

I have found this invertor , is this the kind of power I should be looking for , its on RS Online ; Seimens 6SL3211-0AB22-2UA1 G110 ANALOG 200V1 PH 2.2KW ......A bit pricey but can be found cheaper.

 

[armalites]

When I bought my IMO I-drive I bought it from these people.

www.powercapacitors.co.uk

They were very helpful and had a good laugh because they'd never had anyone who had read the instruction manual before purchasing.

Mine is still wired up in a temporary fashion and is in an open barn. It remains on 24/7 and has been like that for probably 10 years and has never missed a beat.

 

[alfapat]

Ok I have now made up my mind to source an invertor, I have left it to someone local.

Can anyone suggest a reasonable priced Solenoid for the upper limit safety switch , I have tested it over 12v but is reluctant to draw in to operate untill I coax it . It maybe better with 24v , I am only suspecting a fault , because there has been a tie wrap installed to over-ride its function. Ill post a pic later once my google has updated

 

[alfapat]

View attachment 180624 To add further to my last note , would this transformer still work for 240v supply, I am putting an invertor on the supply to the power post (as it has a 3 ph motor ) from a 240v supply, just invase you wonder.

 

[Brian cooper]

Hi, new here, just bought a mk3 Bradbury 4 poster lift, have got it in position where we want it, cables all connected but no up, or down motion when buttons pressed, worked fine when we went to view it but since got it to our unit, nothing, motor is engaging but no movement, any ideas please thanks