Yaskawa i80M Connecting Manual - Manual (Page 11)

The heat value shown in the cooling capacity column represents the allowable heat value
when air temperature rise inside the cabinet is less than 10”C.
(Example) Allowable Heat Value inside Cabinet with Heat Exchanger
The heat value inside the cabinet required to keep the inner-air temperature rise below
with the Heat Exchanger HEATEX 02 installed inside the cabinet as in the example (1) is:
P = k A
●
=6 X3 X1 O+25O
Accordingly, the heat value should
(3) Installation of Heat Exchanger
be less than 430w.
UPPER
A heat exchanger is installed to the cabinet made
CABINET
by a machine tool maker.
Shown above is an example of heat exchanger
installation. Install the heat exchanger so that the
inner air is taken in from the upper section and
OUTER-AIR
FLOW
discharged from the lower section while the \ LOWER
side air is taken in from the lower section and
H EAT
EXCHANGER
charged from the upper section. (For details re-
garding installation, see Appendix 16. Dimensions
Fig.
of heater exchanger. )
4.3 HEAT VALUES OF UNITS
(1) NC UNIT
Unit Heat Value (W)
CPU Module 70 to 160
9“ CRT Operator’s Panel 20
T a p e R e a d e r I
25
NOTE :
The heat value of the CPU module varies with option addition