Routine Maintenance and Inspection
‑139‑
Disconnect the optional grounding screw of VDR before any voltage resistance test; failure
to comply may result in test failure.
8.3
Replacing Quick-Wear Parts
8.3.1 Service Life of Quick-Wear Parts
Quick‑wear parts of the AC drive include the cooling fan and electrolytic capacitor.
Their lifetime is related to the operating environment and maintenance. Generally,
the service life is as follows.
Component
Service Life
[Note]
Fan
≥ 5 years
Electrolytic capacitor
≥ 5 years
Note:
The standard service life of a device is the expected lifetime when the device is used in the
following conditions. You can determine when to replace your devices based on the
actual operating time.
Ambient temperature: 40°C
Load rate: 80%
Operating rate: 24 hours per day
8.3.2 Replacing the Cooling Fan
Quantity of cooling fans
●
Possible damage causes: bearing worn and blade aging.
●
Diagnosis: cracks on the blade, abnormal vibration noise upon startup, and
abnormal running of fan blades
●
Replacement: Press the snap‑fit joint on the fan plastic cover and pull the fan
outward. After replacement, check that the air flows upwards.
Summary of Contents for MD520 Series
Page 1: ......
Page 16: ...Components 15 Figure 2 2 Components of T5 to T6 models...
Page 19: ...Components 18 Figure 2 5 Components of T10 to T12 models with AC output reactor...
Page 27: ...System Structure 26 Figure 3 9 Control circuit terminals...
Page 43: ...Options 42 Figure 5 2 Dimensions of MD500 AZJ A1T2 through hole mounting bracket and holes mm...
Page 44: ...Options 43 Figure 5 3 Dimensions of MD500 AZJ A1T3 through hole mounting bracket and holes mm...
Page 45: ...Options 44 Figure 5 4 Dimensions of MD500 AZJ A1T4 through hole mounting bracket and holes mm...
Page 46: ...Options 45 Figure 5 5 Dimensions of MD500 AZJ A1T5 through hole mounting bracket and holes mm...
Page 47: ...Options 46 Figure 5 6 Dimensions of MD500 AZJ A1T6 through hole mounting bracket and holes mm...
Page 49: ...Options 48 Figure 5 8 Dimensions of MD500 AZJ A1T8 through hole mounting bracket and holes mm...
Page 54: ...Options 53 The following figures shows the installed copper busbar...
Page 115: ...Options 114 Figure 5 48 Dimension drawing of ferrite clamp...
Page 120: ...Expansion Cards 119 Figure 6 1 Installation position of expansion cards...
