cFP-21xx Quick Start Guide
2
ni.com
symbol stamped beside it:
. Connect the backplane PE ground terminal to the
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
Cooling Outline 51 mm (2 in.) All Around
4 slots = 246 mm (9.68 in.)
8 slots = 441 mm (17.4 in.)
127 mm
(5.00 in.)
Min.
165 mm
(6.50 in.)
Cabling
Clearance
4 slots = 246 mm (9.68 in.)
8 slots = 441 mm (17.4 in.)
Cooling Outline 51 mm (2 in.)
Cooling Outline 51 mm (2 in.)
Min.
182 mm (7.18 in.)
106 mm (4.18 in.)
324033b.fm Page 2 Wednesday, September 14, 2005 2:09 PM
