Maintenance and Inspection
8-5
îš‹ Types and Number of Cooling Fans Used in the Drive
Cooling fans used for the Drive has two types; Heatsink cooling fan and heatsink circulation fan. Heatsink
cooling fan blows air to the Drive cooling fin. Heatsink circulation fan stirs up the air inside the Drive unit.
Table 8.3 shows the number of cooling fans used in the Drive. For more information on models and specifica-
tions of cooling fans, contact your Yaskawa representative or YASKAWA ELECTRIC ENGINEERING COR-
PORATION.
When replacing the fan, use the specified type of the fan. If the inapplicable fans are used, performance of the
Drive will not be fully obtained.
Table 8.3 Number of Cooling Fans to be Used
Maximum Motor
Capacity
(kW)
200 V Class 400 V Class
Heatsink Cooling
Fan
Heatsink Circulation
Fan
Heatsink Cooling
Fan
Heatsink Circulation
Fan
0.4----
0.75 - - - -
1.5 - - 1 -
2.2 1 - 1 -
3.7 1 - 1 -
4.0 - 1 -
5.5 2 - 2 1
7.5 2 1 2 1
11 2 - 2 1
15 2 1 2 1
18.5 2 - 2 -
22 2 - 2 -
30 2 1 2 -
37 2 1 2 -
45 2 1 2 -
55 2 1 2 1
75 2 1 2 1
90 2 1 2 1
110 2 1 2 1
132
-
21
160 2 1
185 4 2
220 4 2
300 5 2
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