I'm in the process of searching for a captive key interlocking system that operates off of a bolt or lever to secure the door of an automated system. The switch needs to have built-in category 3 capable safety contacts for interface to a safety circuit. I have seen a few systems, particularly...
pimpim32,
We have had MANY of these U3K drives fail and have talked to Rockwell extensively regarding the matter. Their initial response was that E55 is a "catch-all" fault, and usually was a result of noise. After some further analysis (some of which we are still awaiting to hear back...
"So stop playing (At least here). Tell the production group they are in charge of production and your in charge of electrical stuff. Do you need a cahones transplant? If your going to let yourself be pushed around then the future is going to be hell. You have the code, common sense, opions...
Oh, it's not that I don't believe you, but I'm playing devil's advocate... Our rather non-technical production group is not going to take anything seriously unless it's in writing. Or, that's how I've taken their reaction thus far...
rob46, that's what NEC 2005 says, yes... However, it says "distances shall be measured ...from the enclosure...", but the table specifying distance doesn't cover distance from a closed and grounded panel door; only exposed and energized parts... So, therein lies my dilemma. My thoughts are...
From BJC,
"If your management won't accept the fact that the clearance is open or shut, write a letter to them clearly stating what is needed, that you strongly object and that you are requesting an outside review by sending a copy of the letter to the local AHJ. If you get fired it may be a...
NEC 2005 Article 110.26 Table 110.26(A)(1)states a voltage level and 3 levels of exposure. 1) Exposed energized parts adjacent to an insulated area 2) Exposed energized parts adjacent to a grounded area and 3) Exposed energized parts adjacent to other exposed and energized parts. I'm not...
Any idea which code says "open or closed?"... That's the real problem. I understand that 42" should be the clearance, but getting other non-technical (read management) folks to understand that without specific references is another matter entirely.
Thanks
I've recently been asked to document the specific regulations concerning temporary storage of items in front of electrical panels. I realize that by NEC 2005 Article 110.26 Table 110.26(A)(1), that our 480 VAC control cabinet must have a minimum of 42" of working space in front of it. The...
Controlsdude, something you said sparked an idea out of one of my coworkers. The system always fails on power-up, and only one drive fails. The drive that fails is the first in the scanning sequence on the DeviceNet. My coworker suspected that the DeviceNet may be trying to write data before...
I'm writing because of a recurrent AB Ultra 3000 Servo Drive E55 fault in one application in our facility. When the fault occurs, the drive is out for the count. Parameters can be reloaded using Ultraware, but they will be lost on the next power-down cycle. From what we can understand (per...
TWControls, when I did the last thing you recommended last week, I got the error, "Configuration Data Size Too Long" I believe. I remember thinking that is was the opposite message that I got before. That was when I tried to use the DeviceWho command. I really don't think it can be done at...
TWControls, I tried the MSG that you recommended, consisting of a Generic CIP message type, with a DeviceWHO service type.
I immediately got the error "16#0013 - Configuration data size too short" when I enabled the message... I don't know which configuration data this is referring to, but I...
I've looked over some AB tech notes concerning remote DH+ messaging, but have had no luck. The two I'm referencing are tech note ids 16778 and 23887. The second note (I believe) is closest to what I'm trying to do, but the message isn't successful.
Yes, the other alternative is to install...
controlsdude, that's a good suggestion, however we have only ControlLogix "gateways," with no processor installed. The rack has no intelligence except as a data path. Really, it would be easy if each gateway had a ControlLogix processor installed. One alternative I've considered, although I...
Ok, so I've been through Rockwell Technical Support [yinyang] with only minor injuries, and still don't have the answer to this burning question...
I am attempting to send a message over several networks, through two gateways, and on to an RSSQL server, but I still haven't received a...
You will be pleasantly surprised when you can capture events with the "data trace" feature of Omron. Just set up the bits/words you want to monitor, and set the trigger bit (an error, etc.), start the data trace, and walk away. When the next error occurs, reconnect your CX Programmer terminal...
blacksea, thanks for the Galil suggestion. I will check into it tomorrow. My application is simple, but requires high speed. We're moving 10 lb. or so, 15x15x1.5" objects from one machine to another. It seems simple enough, but cycle time is the killer.
Thanks for the replies. Any more...
