Types And Number Of Cooling Fans Used In The Drive - Omron SYSDRIVE RV Series User Manual

Periodic inspection standards vary depending the Inverter's installation environment and usage conditions.
The Inverter's maintenance periods are noted below. Keep them as reference.
Refer to Cooling Fan Replacement Outline (Page 8-5) for replacing a cooling fan and Circulation Fan
Replacement Outline (Page 8-15) for replacing a circulation fan. To replace other parts, contact your Yaskawa
representative for details on preventive maintenance for Inverters.
Part
Cooling fan
Smoothing capacitor
Breaker relays
Fuses
Aluminum capacitors on PCBs
Note The standard replacement period is based on the following usage conditions:
Ambient temperature:Yearly average of 30°C
Load factor: 80% max.
Operating rate: 12 hours max. per day

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.
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.
Maximum Motor
Capacity
Heatsink Cooling
(kW)
0.4
0.75
1.5
2.2
3.7
5.5
7.5
11
15
18.5
22
30
37
45
55
Table 8.2 Part Replacement Guidelines
Standard Replacement Period
2 to 3 years
5 years
-
10 years
5 years
Table 8.3 Number of Cooling Fans to be Used
200 V Class
Heatsink Circulation
Fan Fan
- -
- -
- -
- -
1 -
1 -
2 -
2 1
2 -
2 1
2 -
2 -
2 1
2 1
2 1
Maintenance and Inspection
Replacement Method
Replace with new part.
Replace with new part. (Determine need by
inspection.)
Determine need by inspection.
Replace with new part.
Replace with new board. (Determine need by
inspection.)
400 V Class
Heatsink Cooling Heatsink Circulation
Fan
-
-
-
1
1
1
2
2
2
2
2
2
2
2
2
Fan
-
-
-
-
-
-
-
1
-
1
-
-
-
-
-
3
8-