Black & Decker d984 Installation Manual page 39

1 Between housings, allow 12 inches below the primary
housing for cable breakout, physical inspection and ventila-
tion.
2 The cable length connecting the primary housing and sec-
ondary housing must not exceed 12 feet.
The modular chassis will fit in a 12-inch deep standard NEMA enclosure should
this be required (e.g., an acidic atmosphere in the factory).
07
Note
The only cooling available to the PLC' s is derived from natural
convection air flow. If the Controller is placed within a NEMA enclo-
sure, some provision for added cooling may be required. The control-
lers should also be mounted vertically to ensure adequate convection
cooling of internal components.
GM4984-EDK
System Planning 25