National Instruments FieldPoint cFP-21 Series Quick Start Manual page 2

324033b.fm Page 2 Wednesday, September 14, 2005 2:09 PM
symbol stamped beside it:
system safety ground using 14 AWG (1.6 mm) wire with a ring lug. Use the
5/16 in. panhead screw shipped with the backplane to secure the ring lug to the
backplane PE ground terminal.
Caution Keep in mind these requirements for space and cabling
clearance:
• Allow at least 51 mm (2 in.) all around the backplane for air
circulation.
• Allow 38 mm (1.5 in.) below and 51 mm (2 in.) above the controller.
Cabling
Clearance
4 slots = 246 mm (9.68 in.)
8 slots = 441 mm (17.4 in.)
Cooling Outline 51 mm (2 in.)
cFP-21xx Quick Start Guide
. Connect the backplane PE ground terminal to the
4 slots = 246 mm (9.68 in.)
8 slots = 441 mm (17.4 in.)
Cabling Clearance Cooling Outline 51 mm (2 in.) All Around
Cooling Outline 51 mm (2 in.)
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