Maintenance and Inspection
8-
3
Periodic Maintenance of Parts
The Inverter is configured of many parts, and these parts must be operating properly in order to make full use
of the Inverter functions.
Among the electronic components, there are some that require maintenance depending on their usage condi-
tions. In order to keep the Inverter operating normally over a long period of time, it is necessary to perform
period inspections and replace parts according to their service life.
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.
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
Procedure for Adjusting Constants after Replacement of Control Board
Before replacing the control board, use the COPY function of the Digital Operator to copy the settings of the
constants of the control board from the Inverter to the Digital Operator.
When using the copy function of the Digital Operator, check that the following settings are the same between
the Inverter and the Digital Operator.
•
Inverter product and type
•
Software number
•
Inverter capacity and voltage
•
Control method
Refer to
Copying Constants
of Chapter 6 on page 6-150.
After replacing the board, use the following procedure to adjust the constants.
Contact your Yaskawa representative if a control board with older version is used.
Table 8.2 Part Replacement Guidelines
Part
Standard Replacement Period
Replacement Method
Cooling fan
2 to 3 years
Replace with new part.
Smoothing capacitor
5 years
Replace with new part. (Determine need by
inspection.)
Breaker relays
-
Determine need by inspection.
Fuses
10 years
Replace with new part.
Aluminum capacitors on PCBs
5 years
Replace with new board. (Determine need by
inspection.)
