
B–63003EN/04
3. INSTALLATION
53
The control unit is equipped with a fan motor.
Air is fed into the bottom of the unit and output from the fan motor
mounted on the top of the unit.
The spaces shown in Fig. 3.6.2 (areas (A) and (B)) are always required to
ensure smooth air flow.
Also, adequate service access space is required in front of and at the top
of the unit so that printed circuit boards and the fan motor can be replaced
easily if necessary.
There is a spare connector located at the far end (at middle height) on the
right side of the control unit. This connector is used for controller testing
and other purposes. Therefore, space (area (C)) for handling the
connector is required.
A
A
B B
C
Space for air flow, and access area for fan replacement
Single–slot rack: Approx. 65
Three–slot rack: Approx. 180
Access space
for spare
connector
Approx. 180
Spare connector
Unit: mm
Sufficient space for
replacing a printed circuit
board is required.
30
50380
50
80
Fig. 3.6.2
3.6.2
Installing the
Stand–alone Type
Control Unit