Chapter 13. Troubleshooting and Maintenance
13-5
13.3
Precautions for maintenance
z
Make sure to remove the input power while performing maintenance.
z
Make sure to perform maintenance after checking the DC link capacitor has discharged. The bus
capacitors in the inverter main circuit can still be charged even after the power is turned off. Check the
voltage between terminal P or P1 and N using a tester before proceeding.
z
SV
-iE5 series inverter has ESD (Electrostatic Discharge) sensitive components. Take protective
measures against ESD before touching them for inspection or installation.
z
Do not change any inner parts and connectors. Never modify the inverter.
13.4
Checklist
z
Daily inspections
Proper installation environment
Cooling system fault
Unusual vibration and noise
Unusual overheating and discoloration
z
Periodic inspection
Do screws and bolts become loose or rust due to the environment?
)
Tighten or replace them.
Alien substances are clogged in the cooling system?
)
Eliminate them by using compressed air.
Check the rotating condition of the cooling fan, the condition of capacitors and the connections with the
magnetic contactor
)
Replace them if there are any abnormalities.
13.5
Parts
Replacement
The inverter consists of many electronic parts such as semiconductor devices. The following parts may deteriorate
with age because of their structures or physical characteristics, leading to reduced performance or failure of the
inverter. For preventive maintenance, the parts must be changed periodically.
Part name
Change period(year)
Description
DC link condenser
4
Exchange
Control smoothing condenser
4
Exchange
Relay
-
Determined after inspection
Warning
Summary of Contents for SV-iE5 Series
Page 124: ...iV ...