You are not registered yet. Please click here to register!


 
 
plc storereviewsdownloads
This board is for PLC Related Q&A ONLY. Please DON'T use it for advertising, etc.
 
Try our online PLC Simulator- FREE.  Click here now to try it.

---------->>>>>Get FREE PLC Programming Tips

New Here? Please read this important info!!!


Go Back   PLCS.net - Interactive Q & A > PLCS.net - Interactive Q & A > LIVE PLC Questions And Answers

PLC training tools sale

Reply
 
Thread Tools Display Modes
Old August 16th, 2017, 10:54 AM   #31
raffles
Member
Canada

raffles is offline
 
Join Date: Dec 2013
Location: Vernon, BC
Posts: 70
The Mitsubishi A800 series drives are very well built. To use the 200Hp example above,

FR-A840-03610 is rated for 200HP (260A) Normal Duty (150% OL for 60s, 200% OL for 3s, at 50degC). If the application is a variable torque load like a fan or pump it could be used in either Light Duty (250 HP, 325A, 120% 60s, 150% 3s, 50degC) or Super Light Duty (300Hp, 361A, 110% 60s, 120% 3s, 40DegC)

Mitsubishi build their own drives and their own power components unlike most others
  Reply With Quote
Old August 23rd, 2017, 08:41 AM   #32
DickDV
Member
United States

DickDV is offline
 
Join Date: May 2002
Location: Kalamazoo MI
Posts: 2,311
There are drives out there with poor hardware reliability and performance records (Schneider/Altivar, TB Woods, and Lenze/ACTech come to mind) but, other than these known bad actors, I believe your best VFD choice is the one that gives you the best competent LOCAL support. And, preferably without additional charge.

That leaves room for a large number of brand names but, even with the best hardware, lack of support is a deal breaker.

I've been applying and commissioning VFD's for almost 30 years now and I'm not ashamed to say that I reach for the Tech Service Phone Line pretty quick when things don't seem to be going right. Nothing poisons a Brand's image faster, in my view, than incompetence in the person on the other end of the Tech service line.

And, I might as well say it here, it seems clearly foolish to commit to a single brand name when you have a broad spectrum of applications in your facility. Some brands are especially good at one type of application and no good at all with others. Some are attractively priced at certain levels of sophistication and too pricey for other levels.

You have to keep your brain engaged. Forget loyalty. Reliability and support give you long term value and that is worth focusing on.
  Reply With Quote
Old August 23rd, 2017, 09:48 AM   #33
Tom Jenkins
Lifetime Supporting Member
United States

Tom Jenkins is online now
 
Tom Jenkins's Avatar
 
Join Date: Apr 2002
Location: Milwaukee, WI
Posts: 5,881
I second Dick's comments wholeheartedly. My gripe with Siemens and GE was not just with drive problems, but at least as much because of lousy support. With both manufacturers, on more than one installation, I had to figure out the problems myself because the technician couldn't.
  Reply With Quote
Old August 23rd, 2017, 09:49 AM   #34
Handcraftedsince87
Lifetime Supporting Member
United States

Handcraftedsince87 is offline
 
Handcraftedsince87's Avatar
 
Join Date: May 2014
Location: Washington
Posts: 115
^ +1
__________________
“There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self.”
  Reply With Quote
Old August 23rd, 2017, 10:13 AM   #35
Rockfordmfg
Member
United States

Rockfordmfg is offline
 
Join Date: Feb 2013
Location: Tennessee
Posts: 14
We have a lot of older AB drives that had been very robust. (1336, 160's, 70's) But as they have failed after 15-20 years of service they have been replaced with PF4, PF40 and now PF523. As with everything in our society now (appliances, TV's, stereos, industrial electronics, etc.) everything is being built as less robust throw away. So we find the newer drives less robust and less cost as the old ones.

We also use Yaskawa, Automation Direct G3 and tried a Danfoss.

Programming is easiest (more straight forward) on AB's & G3. Yaskawa and Danfoss have more parameter sets, many of which are related and requires more extensive programming to set-up.
  Reply With Quote
Old August 23rd, 2017, 07:53 PM   #36
neuhauser
Member
United States

neuhauser is offline
 
Join Date: Apr 2011
Location: Alabama
Posts: 3
I noticed nobody mentioned Toshiba. Royal pain to setup- cryptic setup symbols etc. But run forever afterwards. I've got old G3's in the field that refuse to die. AS1 seems to be a tough drive also. They standup to power line cap switching spikes when others go up in smoke.

Had very good luck with the AB PF700's also. Drive Executive makes setup easy. 4 and 40 series have the same power unit as the Automation-Direct GS3. Not bad drives as long as they aren't pushed. Good luck so far with the 523 - 525's. Jury's still out on the 750 series. I repair drives and have seen the 753 DC bus caps break out if badly jarred. Caps are supported only by the terminal screws which are offset from the center of the cap. (weird design)

AutoDir GS3's are OK. Have setup several using Modbus control.
  Reply With Quote
Old August 23rd, 2017, 09:14 PM   #37
rootboy
Lifetime Supporting Member
United States

rootboy is offline
 
rootboy's Avatar
 
Join Date: Jan 2004
Location: Tennessee
Posts: 1,301
Quote:
Originally Posted by Tom Jenkins View Post
My favorite would be Eaton Cutler Hammer, but I have had good luck with many different brands.
I'd have to agree with you there as well. We had Eaton drives in the desert, minimal protection, and never a failure.
__________________
Just because you can doesn't mean that you should...
  Reply With Quote
Reply
Jump to Live PLC Question and Answer Forum

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Topics
Thread Thread Starter Forum Replies Last Post
Running multiple VFDs on RCD protected circuits Jieve LIVE PLC Questions And Answers 10 September 27th, 2015 08:05 PM
PLC to control multiple Yaskawa V1000 VFDs mateuszczwakiel LIVE PLC Questions And Answers 9 June 8th, 2015 01:28 PM
WM1496 - Limited No. of data can poll? allenreyes LIVE PLC Questions And Answers 1 June 4th, 2014 12:03 PM
How many VFDs to share a load ? Skyba LIVE PLC Questions And Answers 2 September 26th, 2013 07:26 PM
Eaton SVX9000 VFDs and RSLinx Ethernet/IP Issues MCB LIVE PLC Questions And Answers 3 June 21st, 2009 02:27 AM


All times are GMT -5. The time now is 03:47 PM.


.