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"Koyo PLC's - Are they any good?"

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Philip Shaver - (2 posts) Click to check IP address of the poster Apr-05-02, 09:08 PM (EST)
"Koyo PLC's - Are they any good?"
Anyone hve any comments on the Koyo PLC's from Direct Automation?

I've heard great things about their support, and their pricing looks great. Anyone know about the reliability?

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 Table of contents

RE: Koyo PLC's - Are they any good?, Alan Case, Apr-05-02, (1)
RE: Koyo PLC's - Are they any good?, rsdoran, Apr-05-02, (2)
RE: Koyo PLC's - Are they any good?, Tom Jenkins, Apr-06-02, (3)
RE: Koyo PLC's - Are they any good?, remtechengineering, Apr-06-02, (4)
RE: Koyo PLC's - Are they any good?, John Waalkes, Apr-17-02, (5)
RE: Koyo PLC's - Are they any good?, JSTARKEY, Apr-01-03, (6)

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Messages in this topic

Alan Case - (46 posts) Click to check IP address of the poster Apr-05-02, 09:53 PM (EST)
1. "RE: Koyo PLC's - Are they any good?"
Reliability is not a problem. (my opinion)
Search the archives here, there are quite a few threads on this subject.
I will probably be shot down for this statement but I think the Koyo has its uses in the lower end (ie not multi thousand IO, networked, tied into SQL database with ERP etc etc type projects) of the automation scheme.

Regards Alan Case

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rsdoran Click to Email rsdoran - (583 posts) Click to check IP address of the poster Apr-05-02, 10:03 PM (EST)
2. "RE: Koyo PLC's - Are they any good?"
I am not sure about the above but Koyo has been making these PLC's for many years (some marketed under Siemens, TI and GE brand), so reliability is not an issue. For the price they will perform, just make sure that scan time and features match your needs. All have issues but the automationdirect support is good.
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Tom Jenkins - (975 posts) Click to check IP address of the poster Apr-06-02, 10:39 AM (EST)
3. "RE: Koyo PLC's - Are they any good?"
We have used the Koyo PLCs when they were sold as Siemens, PLC Direct, and now AutomationDirect. As with any manufacturer, they have had a couple of problems with hardware. We had some ROM upgrades required about eight years ago because of communications links, and about five years ago we had some problems with 8 channel analog inputs. The problems were quickly identified and solved by the company, and that is all I ask for. I have had similar problems with GE, A-B, and others. The frequency of failures with Koyo is no more than with any other brand, and less than with most. Their documentation is better than any other brand I work with, and their tech support is top notch. They are by far my preferred brand, and we have done some pretty elaborate control and SCADA systems with them.
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remtechengineering - (19 posts) Click to check IP address of the poster Apr-06-02, 11:07 AM (EST)
4. "RE: Koyo PLC's - Are they any good?"
Yes, they are as good as any other plc on the market. As someone else stated above it depends on the application on which plc to use. There are MTBF sheets for the most if not all plc's from ADC. There have been problems with Koyo as with any other plc, but the ,majority of the time it is fixed by a firmware upgrade. The software is user-friendly and I recommend to buy the full version, this works all the plc families that they have. The 305 and 405 family has been around for 20 years, with other names attached. The 105 and 05 are by far the best small plc that I have worked with.

The support from Facts Engineering is great also from Host Engineering is great as well.

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John Waalkes - (155 posts) Click to check IP address of the poster Apr-17-02, 00:48 AM (EST)
5. "RE: Koyo PLC's - Are they any good?"
Been using them for years in the form of GE Series One Plus's.

Less trouble with these than much of the new stuff. Highly recommended.


John

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JSTARKEY Click to Email JSTARKEY - (1 posts) Click to check IP address of the poster Apr-01-03, 10:32 PM (EST)
6. "RE: Koyo PLC's - Are they any good?"
YES THEY ARE VERY GOOD, EASY TO USE, AND THE TECH SUPPORT IS WORLD CLASS!!! I HAVE USED AND INSTALLED OVER 300 OF VARIOUS KOYO PLC. HAVE NOT HAD ONE SINGLE PROBLEM. ANY TROUBLE WITH THE STARTUP OR INSTALLATION JUST CALL THE TECH SOPPORT NIUMBER AND THEY WILL HAVE YOU UP , RUNNING AND SUCCESSFUL. CAN NOT SAY ENOUGH GOOD THING ABOUT KOYO. HAVE BEEN USING THEM FOR LAST 6 YEARS.
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