Very Sick Lenze 534 Controller

I Must say thank you to all who are helping with this thread/problem as i wouldnt have a clue without you all.

Rick.

Rick,

My Lenze 534 has blown the same transformer...
Did you replace wit the above recommendation and did it fix it?

Thanks
Simon

Quote:

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Originally Posted by SimonD

Rick,

My Lenze 534 has blown the same transformer...
Did you replace wit the above recommendation and did it fix it?

Thanks
Simon

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We've not arrived at a decision yet as we are not sure what the correct secondry voltage should be, i was hoping someone would have a look at a working one but it appears nobody has voluteered yet.. LOL, I could be that nobody has one they can look at but i suspect the answer will come up soon.. I HOPE. Im really stuck as i cant use the machine without it...

Rick

Ah... ok thanks... That is where I am at too...
I've asked someone to measure their working one and will report back if I get anything.

Thanks
Simon

Someone near me has just had the same problem!! I've just measured the voltage on my (working) unit and both secondaries are showing 15V RMS with the drive powered but the motor static.

Suggest checking the rectifiers as well as the suggestions above. it looks like a long term overload causing heating rather than a short term 'bang' scenario.

Good luck!!

David

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Originally Posted by irving2008

OK, but still, are the secondaries series or parallel connected?

Other useful info I just found... the Lenze 530 series manual has this interesting pic:

Attachment 6605
So we know it is an EI30 series and its 0.9VA... tho current EI30 are 0.6VA and 1VA, so I guess this might be a special. edit: or then again, maybe not; EI30-10.5 is 1VA or 0.9W for the 2x15 V: VB 1,0/2/15 from Farnell (alternate to Myrra)

Elsewhere in the manual it lists switching voltages for relay contacts as 20v so I'm going to hazard a guess this is a 15v secondary...

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Ha... my "remote-voltage-sensing-fu" is working well :)

2x15 V: VB 1,0/2/15 from Farnell £2.07p+VAT but min order value £20

Same from RS £3.74+VAT, free p&p but out of stock till Oct.

Same from CPC £ 3.18 inc VAT + P&P and in stock. Note: this one has 2 x 115v primary so may need minor mod to pcb?

I replaced the transformer yesterday... The output now pulses from on to off when commanded to a speed. Something else must have gone on mine too.
Time to replace with new...

Fingers crossed for me then LOL

Rick

Quote:

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Originally Posted by SimonD

I replaced the transformer yesterday... The output now pulses from on to off when commanded to a speed. Something else must have gone on mine too.
Time to replace with new...

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Are you any where near resolving your lenze problem?

New transformer has been fitted but not yet tested, and I also found that C6 (.47J100) {470nF 100V Polyester Capacitor} has also failed, so that will need to be replaced.

I also don't trust the looks of C5 (4.7uf 63v Electric Capacitor) so I am also going to replace that.