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Thanks for the posts re a Megger and fingers. Got a friend (ex sparkie) who has a Megger so I might just test the old motor when I get my hands on it. It was rewound 5 or 6 years ago so should be OK...

Yep F_03=0
I am very happy. Just have to do a little maintenance and tuning on the machine and we are in business.
Graham

All good. I don't need reverse so I have locked it out anyway. I have free run stop as I see no point in using power to stop it.

I presume if I hit reverse, nothing will happen now.

Graham

Hi Stuart

Well she's all up and running at last. Got F_05 on 1 at the moment. I would assume it would be full power at 50Hz. Set up the remote rev/off/fwd and speed control switch. All working as...

Hi all. New motor is installed, "New" VFD arriving this afternoon. I had a question that I emailed Dave last night, but had no reply, so I will post it here in case any one else can help.

PS. Last...

I pleaded my case with Dave for a new unit and he agreed. All ordered, so just have to find a new motor now. Waiting on a few quotes to get back to me for that. Do you know much about motor brands....

It sounds like a 2 speed motor is what I need.

It seems that the 2 speed motor I have is by spec an expensive motor. I rang the guy I bought the machine off to quiz him about it. That particular...

Thanks for putting everything in a nutshell for me Stuart. Just a couple of questions.



Wouldn't it draw more current at 240V. If so that might overload the VFD?



I presume you mean a 2...

Well I am a bit disappointed since Dave wants to sell me his demo model, since he only has 2 new ones left on the shelf and reckons he is losing UK50. I told him I was not happy, but he said its only...

Said it could handle only so much shorting? Guess if I get any errors next time I will be testing motors before retrying to run.
Just waiting for Dave to reply to me. Found that SMS is a good way...

No I meant the current draw by the motor. Anyway I have made a decision to bite the bullet and get a replacement from Dave. That way there is no mucking around with the other motor. I am waiting on...

If I stick with the same type 415 volt VFD and get a new motor I will configure the wiring on new motor in star mode for 415 volts. From what I figured before, I will still get the same performance...

Sorry Stuart, yes I got that backwards. 240V Delta or 415 Star. Both original motors are/were wired in 440V delta (the option is 760V Star). I have been researching, and my conclusion is the motor...

Got a price for a replacement VFD from Dave. Still not that cheap, so considering the option of 2 new motors and cheaper 240V VFD. Can you tell me are there disadvantages to running the motors in...

Hi Stuart

Yes I thought about replacing both motors. The problem is that the good motor is a 4 pole (2 speed) for the spindle moulder and I want to keep that speed option. Yes I could do it with a...

Hi Stuart

Sorry for the late reply. Been working and got family visiting.

I only have one picture of the damaged track section which I have attached. (It looks quite small after I uploaded it...

No warranty so I opened it up after asking Dave. Sent him a pic but to me it looks like its just blown a couple of tracks on the circuit board. I can't see any damaged components, but I guess one...

Stupidly I didn't recheck resistances. Emailed Dave and was pretty up front with him about what happened. Just have to see what happens. If Dave won't warranty it, could I get fixed somewhere here...

OH OH!!!!

Pulled the terminal box on the faulty motor and attempted to insulate the wires for the couple of inches I could see. Wired it all up and gave it a go.

A BIG BANG from the VFD and...

Interesting that you say that. I was on the phone to WA Rewinds and he reckoned the weird thing happening on my ohm meter might indicate a faulty connection. I removed the junction box on the motor...

Yes I did some googling and it appears you need to test at higher voltages to diagnose properly. This really sucks. If only it was the other motor I could still use the machine! I guess electricians...

Hi Stu

The error comes up immediately I press Run. I just tested with my little Dick Smith multimeter. Removed all the Delta connectors and wires so I could test each coil separately. All 3 coils...

Good plan, but no joy. Removed the belt and motor spins freely by hand, but still get OCA error. F_05 was default on 4. I changed it to 1 but that was after the error had happened. I thought it...

F_01 was on 5 by default. I tried 10 with no success. Dave suggested I take the belt off the motor and see if it starts with no load. Could be a bearing or just too much load. I will let you know how...

UPDATE

I checked my parameters. V/F Pattern was on 60Hz so I changed it to 50Hz. (Could that have caused a problem when I ran it at 50Hz before?). My machine has 2 motors so I tried the other one...

HELP!

OK we just got everything wired up. I ran the initial test at 5Hz as per the instructions and that worked fine. Next I stopped the machine (with run/stop button on VFD), changed the...

It seems a bit strange to me. The enclosure helps, but obviously you still need to access the VFD directly to program it. Do you know if it is legal to wire it up as is? I guess my sparky will soon...

Looking at the input wiring for my VFD. The manual shows pictures of different looking units to mine that have a nice input setup with a small tube coming out the bottom of VFD with a nut on. I hope...

Thanks Stuart

I realised that I could not press Run without risking damage. Probably safer if I just write out all my parameters, and do a quick check before I test it.
Graham

Ive got the sparky dropping off some wire and bits and pieces so I can do all the running of cables etc before he comes to hook up a beefier line to my shed. Can I connect the VFD to 240 input...

Thanks Stuart
Obviously I should have read a bit further in the manual and I would have seen that about the E/Stop. Waiting on my sparky to get a bit more juice in the shed. Will let you know how we...

I have received my 240-415volt 3hp VFD from Drives Direct, but haven't set it up yet. I have a couple of questions which I emailed to Dave at Drives Direct, but I haven't had a reply to any of my...

Getting Carbatec 2hp dust extractor most likely. On special right now for $269. Only needs 10amp circuit. Should do me, so I thought that will run on exisiting mixed circuit.
PS Thanks for the...

Here is a link to the switch I bought. I think my wiring will have to be on the floor, since overhead will be a hindrance to using my machine. I would prefer all in one cable (or flexible conduit)....

Dave told me the inverter (240 single phase - 415V three phase 3hp) is rated at 20 amps and should have a 20 amp circuit breaker. I currently only have a 10 amp mixed circuit (lights & power on one...

Basically he said if I am not running it 8 hours a day it should be fine. Paid $650 including remote switch and freight. Fair bit cheaper than 2 motors plus VFD plus pulley, and much easier solution....

The deal is done!
Being posted tomorrow :U
Do you remember how long yours took to deliver Stuart?
Graham

Well I am about to seal the deal on the 240-415 inverter from Drives Direct. My 3.1hp motor is rated at 4.5 amps. The inverter is rated at 4.6 amps so it should be OK as long as not in commercial...

Hi Stuart
I have to ask...
I am busily trying to sort this all out :? and get my machine working hence my being glued to the PC for hours at a time. What's your excuse?

PS. Don't stop you have...

Just did the maths as you say 3.1hp @ 440V = 2.9hp @ 415V.
I was a little worried as the motor info plate says HP 3.1/2.5 (But actually 3.1hp = 2.3Kw.)
I assumed the 2.5 was Kw which at 415V would...

Sorry, what's a TS?

So to clarify, the motors aren't dual voltage 240/415 wired in delta for 240V but are actually wired for (expecting) 415V.

So you are running 415V motors on 240V. I presume you would lose a lot of power?

Graham

Thanks Stuart
I will give Dave another ring tonight regarding the 3.1hp @ 440V. $615 inc freight for the 3hp 240-415 model and no pulley problem to worry about (plus got my 2 speed motor still!)...

When I mentioned the VFD I was looking at from Shanghai Shanyu Electronics Equipment Co Ltd (link below)
2.2KW ,3HP single to 3 phase 0-600Hz Variable Speed Drive VSD VFD Motor control | eBay
they...

I am pretty sure he would have understood that.
The VFDs I have been quoted on by motor suppliers (WEG & TECO) were $550-650 as i think I already mentioned. The WEG guys said if I didn't get the WEG...

Well I just rang Dave at Drives Direct. I gathered all my motor specs before I called and realized the spindle moulder motor is actually 3.1HP (2.5Kw). Dave said I would need the 5HP model which is...

The machine has a 5 core cable for 3 phases, 1 neutral, 1 earth. I thought that was normal?


My machine has ON/OFF for one motor and 1/OFF/2 for the other as you say. It also has 2 big switch...

Thanks Stuart I think that really answers my question. You are successfully running 3hp (at least one old one too) motors on the 415V VFD much like I want to do. Hopefully I will hear from Drives...

Thanks again all for your help. I want the full grunt of at least 3hp, so I don't think running 415V motors on 240V will work for me. I have emailed the guy in UK about his VFD. If it does the job it...