Fan Unit - Toshiba V Series User Manual

Chapter 1 Overview of Loop Controller L3
1
1.6.5

Fan Unit

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BU784
The BU784 is a board unit for duplex configuration, which is equipped with a G3 I/O bus
motherboard and a station bus motherboard. Fig. 1-19 is the front view of the BU784,
along with standard module installation positions.
Basic base unit
A B C
PS PS
Direct bus motherboard
Station bus motherboard
B
PS
Slot
PS S0
PS module
installation slot
Figure 1-19 Front View of Basic Base Unit (BU784)
FA714
The fan unit removes heat of each module by forced air cooling. It has a filter on its front
panel, to prevent dust from entering the main unit through the air inlet.
IMPORTANT
Do not place an obstacle in front of the fan unit; if the air inlet is blocked, module inside
temperature rises, activating the temperature sensor, causing error.
Figure 1-20 is a perspective view of fan unit (FA714).
Fan input power
connector
Figure 1-20 Perspective View of Fan Unit (FA714)
PIF module
installation slots
G3 I/O access CPU installation slots
C D D
S0 S1 S2 S3
E E E E
S0 S1 S2 S3
S1 S2 S3
Station bus
connection module
installation slots
PS module
installation slot
model 3000 Loop Controller L3 User's Manual - Basic Hardware -
A B C C D D
PS PS S0 S1 S2 S3
Direct bus motherboard
Station bus motherboard
B E E E E
PS S0 S1 S2 S3
PS S0 S1 S2 S3
Station bus
connection module
installation slots
Filter (FT711)