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3−13
B) Using two or more rack-mounting cases
In this case, install fans following the criteria below because the temperature in the unit rises
depending on the number of stacks in the rack, load, and ambient temperature.
Note: What are harsh environmental conditions?
- Power supply: 110 VAC (+10%)
- Output voltage and current: +10V, 10 mA
- Ambient temperature: +50
°
C
-
Fig.3-13 Disposition of fan
If fan unit A may prevent upward air flows (when the depth differs as shown with a slant), fan unit
A should be mounted directly above this position. Through this fan layout, fan unit A ventilates,
and fan unit B enhances natural convection. One fan unit B should be installed for every three
cases. It should be mounted as close to a case as possible.
Number of case
Number of fan unit
under severe condition
1-3
1
3-6
2
6-9
3
Table3-7
Relation between number of rack-mounting case and one of cooling fan
8CH Rack-mounting case
Cabinet
Fan unit A
Fan unit B
Summary of Contents for 5683
Page 60: ...9 5 9 3 Dimensional Outline Drawing 9 3 1 Unit ...
Page 61: ...9 6 9 3 2 Panel Cut Sizes Square Hole ...
Page 63: ...9 8 9 3 4 Rack mounting Case Rack Rail Elongate Hole ...
Page 64: ...9 9 9 3 5 Fan Unit Fan 8CH Rack mounting Case Fan Unit Case ...
Page 65: ...9 10 9 3 6 Bridge Box 5370 and 5373 Attachment Hole ...
Page 66: ...9 11 9 3 7 Compact Bridge Box 5379 and 5380 ...
Page 67: ......