ATV61 Problem

Does the CLi remain all through out until you stop it? What frequency are you using? I've encountered something like this (Telemecanique though a different model). The current when the output frequency is low is quite high. As the frequency increases, the current goes down. There's a certain threshold (can't remember the frequency) when the current starts to go down.

If you're operating your motor below this frequency, your current will increase, possibly up to the current limit. Furthermore, operating the motor at too low frequencies will degrade the effect of the cooling fan. If you operate at low frequencies, an auxillary cooling fan is mandatory.

The frequency reference is between 40Hz and 50Hz. At 50Hz the current is aprox. 47A greater than motor rated current which it's 38.8A. The CLi message apper in the same time with a start command and remain all through out I stop it.

Can you send all the parameter values for the drive? I know, there are several pages of parameters but I suspect there may be something that needs changing.

Sorry, but i'm not on installation. The problem was apper a few days ago, and the client has call me to give her a solution. I talk with somebody from Schneider service (Romania) but I have not an answer. If you know any parameter which can perturbe please told me. Anyway the solution it's to go there next week to see what is happening. Thank you

I just read this thread and haven't got a solution to your problem at the moment but I have the feeling that I have seen a similar problem somewhere else. I just can't remember when or where at the moment. At any rate I would be interested to know what you ultimately find so when you do solve the problem please don't forget to post the answer.

Hello,

I gave the ATV to Schneider service and they give me next answer "IGBT bridge fault". So, hardware problem...

I had similar problems with ATV 61s and ATV 71s. On one of them I spent 600+ minutes (all of my cell phone time for the month) with Schneider Tech Support and they could not figure it out. I say junk it now before you waste any more time and buy a different VFD. I hate the ATVs.

On one of my jobs I bought an ABB ACS-550 and it was up and running with exactly the same controls in 30 minutes. Now I use Siemens M440 Master Drives and have them up and running in 10 minutes. Never had another problem with either of those brands.