kastein
Member
- Location
- Southbridge, MA, USA
Hi,
First real post on this forum... hopefully it's relevant. I have had the MH forums come up enough in Google searches over the last couple years that I finally decided to join as I can't find my answer anywhere else.
(re)designing an industrial laser cutter machine. Many reasons, but one of them is because it was never really designed with safety and standards/code compliance in mind, that was "bolted on after"/as design flaws and code violations were found.
Mains voltage is 208-230V 3-ph on most machines, 380-415V 3-ph on Euro export machines. DC bus voltage from the motion platform drive units is 320V or 560V max, 300V or 543V nominal. As such, 300 or 600 volt cable is required in any raceway where AC mains or drive unit output cabling is present, even for signal and comms cables that simply happen to be in the same raceway.
My issue is I'm not certain if energy chain / drag chain such as Krius or Igus track is considered a raceway, a cable tray, or something else. It has separator pegs, but the cables are not entirely separated from each other. However, they are each rated for drag chain/continuous flex use. Can anyone find an NEC, NFPA 79, UL Subject 2011, UL 508a, or other applicable standard/code reason I would have to specify two separate energy chains rather than putting the drive cables on one side of a row of separator pegs and the signal/comms cables on the other side? I will have separate raceways or a rated cable tray with a divider to separate the two classes of cabling for everything else, I just can't find anything that says how I'm supposed to do this in a flexible energy chain/drag chain.
I am having a lot of difficulty finding continous flex rated Ethernet cabling with a 600V rating, otherwise I'd just replace everything with 600V cable and forget about the problem entirely.
Here are the most relevant threads I could find:
https://forums.mikeholt.com/showthread.php?t=177700
https://forums.mikeholt.com/showthread.php?t=178520
First real post on this forum... hopefully it's relevant. I have had the MH forums come up enough in Google searches over the last couple years that I finally decided to join as I can't find my answer anywhere else.
(re)designing an industrial laser cutter machine. Many reasons, but one of them is because it was never really designed with safety and standards/code compliance in mind, that was "bolted on after"/as design flaws and code violations were found.
Mains voltage is 208-230V 3-ph on most machines, 380-415V 3-ph on Euro export machines. DC bus voltage from the motion platform drive units is 320V or 560V max, 300V or 543V nominal. As such, 300 or 600 volt cable is required in any raceway where AC mains or drive unit output cabling is present, even for signal and comms cables that simply happen to be in the same raceway.
My issue is I'm not certain if energy chain / drag chain such as Krius or Igus track is considered a raceway, a cable tray, or something else. It has separator pegs, but the cables are not entirely separated from each other. However, they are each rated for drag chain/continuous flex use. Can anyone find an NEC, NFPA 79, UL Subject 2011, UL 508a, or other applicable standard/code reason I would have to specify two separate energy chains rather than putting the drive cables on one side of a row of separator pegs and the signal/comms cables on the other side? I will have separate raceways or a rated cable tray with a divider to separate the two classes of cabling for everything else, I just can't find anything that says how I'm supposed to do this in a flexible energy chain/drag chain.
I am having a lot of difficulty finding continous flex rated Ethernet cabling with a 600V rating, otherwise I'd just replace everything with 600V cable and forget about the problem entirely.
Here are the most relevant threads I could find:
https://forums.mikeholt.com/showthread.php?t=177700
https://forums.mikeholt.com/showthread.php?t=178520
