Drives

[Elsys]

Please help with this one as well, same client same powerflex 400 250A unit

"I am getting really tired of this Power Loss Fault, and the worst part is it does not auto-reset not does it allow me to reset remotely. No, I did NOT experience a dip during operation – the other running drive had no problem. It’s costing us water now at the rate this is going...

So it seems the bus volts did drop. A bit strange that other running drive did not also report a fault... why?

In any event, WHY does it not auto-reset? Or, alternatively, if this is a fault that does not permit auto-reset then why can I not even reset a Power Loss Fault with the reset input OR with the Fault Clear Parameter (197)? From Subject Received Size 
Joshua Grimm power loss fault drives 3:33 AM 88 KB 

[fuzzy_logic]

Did you see Aid 49990 ? There is a known problem with some PF400... maybe you're in that case...

A Type 2 fault may require drive or motor repair, or is caused by wiring or programing errors. The cause of the fault must be corrected before the fault can be cleared.

Hope this helps…

- fuzzy logic

[Elsys]

Hi Fuzzy;

i dont think this is the problem this time round, we have had these failure's on previos units and have changed the power supply module's. you can reset these units if you go to the unit and go to clear faults using  the HMI and then reseting the unit. all other faults can be cleared via Dnet through the plc it is only the F3 fault that cannot be cleared. the forum does not allow me to post the drive exec. images for you to see.

[stoneminer]

We experience this issue more than 1 year,you can mask this fault by  modify par  A196.

[Drives Guy]

Hi there,

Just a thought, when you mentioned Fault F3, I have had customers come up with this fault too and the best solution was to add a Line Reactor to the drive.  Do you already have one?  The other cause of this fault is excessive DC bus voltage ripple, and this is typically caused by harmonics coming into the drive.  If you do not have Line Reactors on either drive I would suggest adding one to both.  The other drive might start tripping if you correct your problem with the drive in this dicussion.

Cheers

[Elsys]

all four drives are fitted with input and output line chokes, we have also fitted EMC Filters on these units.

[Drives Guy]

Chokes or Reactors, there is a difference.

[Elsys]

Line Reactors Part number 1321-3R500-B

RFI filter Part number 22-RFD480

[Elsys · Accepted solution]

More correspondence from the client

"

Can we first try some remote support? Are there no configs and/or drive logs I can download and email to the relevant persons that will help pinpoint the problem(s) before someone comes all the way here?

Also – will an update of the FW maybe help? I’ve tried to find the release notes for the latest firmware but was not successful.

I would like to try fix the problem without incurring unnecessary expenditure.

Our drives are on the network – I can even give a technician remote access if necessary via VPN.

Just some ideas – how do you feel?

Last night 23h00, I switched all pumps off and all starters were “healthy”. This morning once again:
 

 
And like I say, the really annoying part is that the only way to reset it is to power the thing down in person OR perform a reset:
 

 
Clearing the fault does not solve the problem.
 
Surely it has to be a drive defect... "

we are not really getting support from Rockwell in SA at the moment, this is a converted Siemens client from and he is busy losing faith in our product now.