Rockwell Automation 1785-LTx,D17856.2.1 Classic PLC-5 Programmable Controllers Users Manual User Manual

Page 37

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Placing System Hardware

Chapter 3

3-2

To allow for proper convection cooling in enclosures containing a
processor-resident chassis and remote I/O chassis, follow these guidelines.

Area reserved for disconnect.

transformer, control relays, motor

starters or other user devices.

13081

Minimum spacing requirements for a

processorĆresident chassis:

Mount the I/O chassis horizontally.

Allow 153 mm (6 in) above and below the chassis.

Allow 102 mm (4 in) on the sides of each chassis.

Allow 51 mm (2 in) vertically and horizontally between

any chassis and the wiring duct or terminal strips.

Leave any excess space at the top of the enclosure,

where the temperature is the highest.

102mm

(4")

153mm

(6")

51mm

(2")

102mm

(4")

Wiring Duct

153mm

(6")

51mm(2")

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