CaptZ,
My suggestion is that if you ahve doubts on the capability of the motors and do not have a choice but to accept them....then ensure that the installation is designed with maximum protection for your motors.
I suggest you have Reactors or dV/dT Output Filters installed on the output of...
MagneticTed,
Using an EX motor is exactly that. Explosion proof where non of the motor will be able to create a spark and set if an explosion. If a burn out occurs the motor is seales to prevent any escape of flame. That goes for the outside moving parts of the motor aswell...hence the...
ccov,
Yes, code calls for visual disconnect.
and Yes again to your second question. The secondary should be fused along with the primary. Code calls for safety and when in doubt....install it. It is for your protection and safety of the plant and people.
Besides...the cost is marginal for the...
Jraef is correct. Maybe we should step a few steps back and go back to basics and first confirm that we have a 100% functional drive first. Very likely could have a damaged front-end, plus what makes it more likely is the fact that you mention bad power at your plant and you never installed line...
I had a similar problem, however my condition was one where the pre-charging circuit failed on the VFD. The pre-charge resistor bypass contactor was closed all the time and thus no soft charging of the DC Bus was happening which caused high inrush currents.
In your situation it is a new product...
Zoobie,
Be very careful in the selection of front end devices that promise high pulse input front ends. I'll tell you why.
The front end is only as good as the voltages feeding it. The higher pulse front end you select the mnore crucial it becomes to get a transformer + clean solid power to...
I have to agree with the above as far as support. I have seen timeless times where there are extremely limited support for MV Drives in a region. Your very first step should be to investigate which manufacturer has what support, how many people, and how far away. Lots of manufacturers have the...
Maybe you can indicate to us all why you are thinking that your specific installation is not functioning correctly and why you do not believe that the vector auto tuning is not functioning. Maybe it is something totally different than what you think. Please provide us with more details and I am...
Drivemaster,
Well, if your drive product came with trending software, you can trend various values to determine response times, etc. It all depends on how accurate you want the vector drive to be and when it runs within your personal specifications, then i am sure it is tuned well enough.
There...
I agree with Marke.
If all you want is fixed speed operation, then plan for soft starters to remove most water hammer and that's it.
No reason to use VFD's for fixed speed pump applications except for some minor reasons.
Maybe the use of the VFD's here isn't fully utilized for the system. Maybe...
Maypot,
Could you advise what faults you are experiencing? That would help us understand what exactly you are seeing.
There should be absolutely no reason why Sensorless Vector control should not work for you.
#1 - Torque can be set and controlled to never exceed what your gearbox is capable of...
Hi Laundry. Thank you for your post. Got a question.
Is the phone number you provided correct, doesn't seem to work...can you verify(maybe one too many digits)...and also the company name.
Where is this company located? Country/city.
I contacted Tyco/Elcon....happen to be not the company asn they do not manufacture resistors.
Any other out there with possible info on this company I am looking for?
Thank you jraef and blacksea.
Jraef....do you know if the Elcon that was purchased by Tyco is infact a manufacturer of braking resistors, or are they perhaps a different company?
If you know it would be great.
Blacksea...tried the web for a long time now and can't find this company. Thanks for...
