Hardware configuration.
CNC 8070
CENTR
A
L UNIT (CPU) ENCLOSURE (Q7-A
PLATFORM).
4.
Calcu
lation
o
f th
e surfa
ce need
ed for
h
eat dissipa
tion.
·45·
(R
EF
: 1911)
4.1
Calculation of the surface needed for heat dissipation.
To calculate the total surface required for the enclosure, in order to dissipate the heat
generated in it, the following data must be considered.
H e a t d i s s i p a t i o n e x a m p l e f o r a n e n c l o s u r e w i t h t h e
recommended minimum surface.
The dissipation coefficient corresponds to an enclosure made of painted sheet metal.
In this case, for an inside temperature of 45 ºC (113 ºF), the enclosure must be larger or an
inside fan must be installed to improve heat dissipation by making the air flow inside.
Data
Units
Meaning
TO
(m²)
Total required surface (The entire surface of the enclosure except the
bottom one is considered useful).
P
(W)
Total power dissipated by all the elements that generate heat inside the
enclosure, including the power supply and the fan, if there is one.
Ta
(ºC)
Ambient temperature (outside the enclosure).
Ts
(ºC)
Internal CNC temperature.
Cf
(m²)
Dissipation coefficient of the material used for the enclosure.
Heat dissipation by natural convection.
Heat dissipation by forced convection with
internal fan (flow Q = 13.6 m³/h).
C70-10K
C70-15.
C70-15AT
Ambient (room) temperature (Ta).
45 ºC (113 ºF)
Dissipated power.
24 W
Dissipating surface.
0.33 m² (3.,55 ft²)
Fan.
Yes
No
Air flow of the fan.
13.6
m³/h
- - -
Dissipation coefficient.
6.2
4.2
Internal CNC temperature.
56.5 ºC
133.7 ºF
62.1 ºC
143.8 ºF
Ts
A
P
Ta
A =
P
Cf · (Ts-Ta)
Ts
Ta
A
P
A
P
4,2
Ts Ta
–
------------------------------
=
Ts
Ta
A
P
A
P
6,2
Ts Ta
–
------------------------------
=
Summary of Contents for CNC 8070
Page 1: ...Ref 1911 8070 CNC Hardware configuration...
Page 8: ...BLANK PAGE 8...
Page 14: ...BLANK PAGE 14...
Page 18: ...BLANK PAGE 18...
Page 22: ...BLANK PAGE 22...
Page 24: ...BLANK PAGE 24...
Page 26: ...BLANK PAGE 26...
Page 28: ...Hardware configuration CNC 8070 1 PREVIOUS INFORMATION 28 REF 1911...
Page 94: ...Hardware configuration CNC 8070 6 CENTRAL UNIT MONITOR Q7 A PLATFORM 94 REF 1911 C70 15AT...
Page 273: ...Hardware configuration CNC 8070 273 User notes REF 1911...
Page 274: ...Hardware configuration CNC 8070 274 User notes REF 1911...
Page 275: ...Hardware configuration CNC 8070 275 User notes REF 1911...
