Estimating number of Marshalling and System cabinets
Estimating number of Marshalling and System cabinets
(OP)
Please does any one know any application or spreadsheet for quickly estimating the number of Marshalling and System cabinets required for a DCS control system- assuming the number of I/O s to be terminated are known ?





RE: Estimating number of Marshalling and System cabinets
Suggest using the DCS/PLC vendor to help.
So many questions:
Size of room?
Height of room?
incoming cables above or below?
are cables single pair or multiple pair in larger cable?
conduit entry or cable?
What size terminal strip do you want?
Where are cables going? What type of cable connection?
Are DCS/PLC terminal boards mounted in cabinets?
Power supplies? DC or UPS involved?
is wiring mixture of intrinsic safe and 'normal' (need separation?
will analog and digital be mixed? 24Vdc, 120Vac, 220Vac, 12Vdc?
Too many more questions to list....but you get the idea.
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RE: Estimating number of Marshalling and System cabinets
RE: Estimating number of Marshalling and System cabinets
Still don't know of a spreadsheet.
I'd probably use 100 - 120 I/O per side of a 48x72" cabinet. Doesn't sound like much, but with wireways, power supplies, etc..., space gets used up quickly.
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