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YASKAWA
TOEPC7106170YB YASKAWA AC Drive GA500 Installation & Primary Operation
Note:
Apply correction factors to the thermal resistance values listed in the specification of the external heatsink in
these cases. For details, contact the external heatsink manufacturer.
•
The heatsink height and width dimensions are much larger than the drive heatsink plate dimensions.
•
When you install multiple drives on one heatsink.
Examine Feasibility of the Selected External Heatsink
When you select an external heatsink, if installation conditions, for example installation
space, limit your selection, use the formula to calculate the heatsink plate temperature and
examine the external heatsink.
If T
HSP
value is lower than the maximum temperature of the heatsink, you can use the
selected external heatsink.
Refer to
Monitor Heatsink Plate Temperature on page 23
to monitor drive heatsink plate
temperature.
■
External Heatsink Selection
The examples show applicable heatsink selection for drive model 2006 when
C6-01 = 1
[Normal / Heavy Duty Selection = Normal Duty Rating]
.
These are examples of calculations for the external heatsink from MIZUTANI
ELECTRIC IND.CO., LTD.
•
Universal Type Heat Sink EF Series, EF (98) L:150 (thermal resistance Rθ
EHS
= 1.6 K/
W)
•
Universal Type Heat Sink EK Series, EK (95) L:150 (thermal resistance Rθ
EHS
= 1.1 K/
W)
Table 9.8 External Heatsink Selection
Symbol
Value
P
Loss
25.0 W
T
HSP_max
90 °C (194 °F)
T
Amb
40 °C (104 °F)
Rθ
HSP
0.05 K/W