Inovance NICE900 Series - Fault Information and Troubleshooting

Chapter 7 Maintenance and Troubleshooting
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Note
Before measuring the insulating resistance with megameter (500 VDC megameter
recommended), disconnect the main circuit from the controller. Do not use the
insulating resistance meter to test the insulation of the control circuit. The high voltage
test need not be performed again because it has been completed before delivery.
7.1.3 Replacement of Vulnerable Components
Vulnerable components of the controller include the cooling fan and lter electrolytic capacitor.
Their service life is related to the operating environment and maintenance.
The service life of the two components is listed in the following table.
Table 7-1 Service life of cooling fan and lter electrolytic capacitor
Component Service Life Possible Damage Cause Judging Criteria
Fan 2 to 3 years
•
Bearing worn
•
Blade aging
•
Check whether there is crack on the
blade.
•
Check whether there is abnormal
vibration noise upon startup.
Electrolytic
capacitor
4 to 5 years
•
Input power supply in
poor quality
•
High ambient
temperature
•
Frequent load jumping
•
Electrolytic aging
•
Check whether there is liquid leakage.
•
Check whether the safety valve has
projected.
•
Measure the static capacitance.
•
Measure the insulating resistance.
7.1.4 Storage of the Controller
For storage of the controller, pay attention to the following two aspects:
1. Pack the controller with the original packing box provided by Inovance.
2. Long-term storage degrades the electrolytic capacitor. Thus, the controller must be
energized once every 2 years, each time lasting at least 5 hours. The input voltage must
be increased slowly to the rated value with the regulator.
7.2 Fault Information and Troubleshooting
The controller provides almost 32 pieces of alarm information and corresponding protection
functions. It monitors all types of input signals, running conditions and external feedback. If any
abnormality occurs, the controller implements corresponding protection function and displays
the fault code.
If a fault occurs, the controller performs corresponding processing based on the error code.
You can analyze the fault based on the information provided in the following table, nd out the
causes, and rectify the fault.