mississippisparky
New member
- Location
- Memphis
I've got a greenfield whereby we're running Profibus DP, Ethernet and Fiber cable in open cable trays around a good sized factory (>500,000 ft2). The plan is to never run the cables in conduit or covered tray. Getting the fieldbus cables rated for tray use isn't so hard, but the cables will sometimes have home runs between motor control panels and a control room (Profibus), Control panels on the factory floor to control room and office IT/Server room (Ethernet) and control panels to control room and/or office area IT Server room.
Control room will be on raised floor with drop ceilings on 2nd or 3rd floor while office area IT/Server room will be on ground floor as factory floor control panels and motor control centers. When running between floors, it would not be between walls or in a shaft. The factory floor would be open to the higher floors and cable tray run up the wall until right angle through the wall in upper floor.
Since cables will be home run from factory floor, I'm having a bit of a time specifying the proper requirements for the copper and fiber cables. For tray applications, the Profibus & Ethernet, I suspect TC-ER, PLTC-ER or PLTC will be ok but am unsure about running into drop ceilings in office area or Server room and raised floor of Control room. I think I can specify OFNP, OFCP for fiber and that would handle all instances. My problem is that it seems like the UL spec I need to cover all bases is CMP + TC but am having a dickens of a time finding Ethernet & Profibus rated for TC & CMP. To put a finer point on the Profibus; it is desired to use Profibus cable compatible with FastConnect connectors. I would be segregating the fieldbus cables either in low voltage trays, get insulation rated to 600V & install metal divider in tray.
SUMMARY OF CONNECTION POINTS
Motor control centers (ground floor) >profibus> control room w/raised floor, dropped ceiling on 2nd or 3rd floor.
Control panels (ground floor) >ethernet, fiber>control room w/raised floor, dropped ceiling on 2nd or 3rd floor.
Control panels (ground floor) >ethernet, fiber> Server room (ground floor)
Control panels (ground flor) >profibus, ethernet, fiber> Control panels (ground floor)
I realize there are stipulations regarding protecting properly rated tray cables in a tray against mechanical damage in order to run cables in open tray, so please lets not get off on that tangent unless it is related to allowing the fieldbus cables to be home run from factory floor to plenum and/or riser areas. Cable tray will be ladder or wire mesh type and installed from source to utilization equipment with a maximum distance of 18" from the end of the tray to the utilization equipment. Any and all comments or suggestions are welcome.
Control room will be on raised floor with drop ceilings on 2nd or 3rd floor while office area IT/Server room will be on ground floor as factory floor control panels and motor control centers. When running between floors, it would not be between walls or in a shaft. The factory floor would be open to the higher floors and cable tray run up the wall until right angle through the wall in upper floor.
Since cables will be home run from factory floor, I'm having a bit of a time specifying the proper requirements for the copper and fiber cables. For tray applications, the Profibus & Ethernet, I suspect TC-ER, PLTC-ER or PLTC will be ok but am unsure about running into drop ceilings in office area or Server room and raised floor of Control room. I think I can specify OFNP, OFCP for fiber and that would handle all instances. My problem is that it seems like the UL spec I need to cover all bases is CMP + TC but am having a dickens of a time finding Ethernet & Profibus rated for TC & CMP. To put a finer point on the Profibus; it is desired to use Profibus cable compatible with FastConnect connectors. I would be segregating the fieldbus cables either in low voltage trays, get insulation rated to 600V & install metal divider in tray.
SUMMARY OF CONNECTION POINTS
Motor control centers (ground floor) >profibus> control room w/raised floor, dropped ceiling on 2nd or 3rd floor.
Control panels (ground floor) >ethernet, fiber>control room w/raised floor, dropped ceiling on 2nd or 3rd floor.
Control panels (ground floor) >ethernet, fiber> Server room (ground floor)
Control panels (ground flor) >profibus, ethernet, fiber> Control panels (ground floor)
I realize there are stipulations regarding protecting properly rated tray cables in a tray against mechanical damage in order to run cables in open tray, so please lets not get off on that tangent unless it is related to allowing the fieldbus cables to be home run from factory floor to plenum and/or riser areas. Cable tray will be ladder or wire mesh type and installed from source to utilization equipment with a maximum distance of 18" from the end of the tray to the utilization equipment. Any and all comments or suggestions are welcome.