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7. PRECAUTIONS FOR MAINTENANCE AND INSPECTION
7.1 Inspection item
7
PRECAUTIONS FOR MAINTENANCE AND
INSPECTION
This chapter explains the precautions for maintenance and inspection of this product.
Always read the instructions before use.
7.1
Inspection item
The converter unit is a static unit mainly consisting of semiconductor devices. Daily inspection must be performed to prevent
any fault from occurring due to the adverse effects of the operating environment, such as temperature, humidity, dust, dirt and
vibration, changes in the parts with time, service life, and other factors.
Precautions for maintenance and inspection
When accessing the converter unit for inspection, wait for at least 10 minutes after the power supply has been switched OFF.
Then, make sure that the voltage across the main circuit terminals P/+ and N/- on the converter unit is not more than 30 VDC
using a digital multimeter, etc.
7.1.1
Daily inspection
Basically, check for the following faults during operation.
• Motor operation fault
• Improper installation environment
• Cooling system fault
• Abnormal vibration, abnormal noise
• Abnormal overheat, discoloration
7.1.2
Periodic inspection
Check the areas inaccessible during operation and requiring periodic inspection. Consult us for periodic inspection.
7.1.3
Daily and periodic inspection
Check and clean the cooling system:
Clean the air filter, etc.
Check the tightening and retighten:
The screws and bolts may become loose due to vibration, temperature
changes, etc. Check and tighten them. Tighten them according to the specified
tightening torque. (Refer to
Check the conductors and insulating materials for corrosion and damage.
Measure the insulation resistance.
Check and change the cooling fan and relay.
Area of
inspection
Inspection
item
Description
Inspection
interval
Corrective action
at fault
occurrence
Check by
user
Daily Periodic
General
Surrounding
environment
Check the surrounding air temperature, humidity, dirt,
corrosive gas, oil mist, etc.
○
Improve the
environment.
Overall unit
Check for unusual vibration and noise.
○
Check fault
location and
retighten.
Check for dirt, oil, and other foreign material.
○
Clean.
Power supply
voltage
Check that the main circuit voltage and control circuit
voltage are normal.
○
Inspect the power
supply.
Содержание FR-CC2-N Series
Страница 61: ...60 3 PRECAUTIONS FOR USE OF THE CONVERTER UNIT 3 4 Checklist before starting operation MEMO ...
Страница 137: ...136 5 PARAMETERS 5 10 Checking parameters changed from their initial values initial value change list MEMO ...
Страница 153: ...152 6 PROTECTIVE FUNCTIONS 6 6 Check first when you have a trouble MEMO ...
Страница 165: ...164 7 PRECAUTIONS FOR MAINTENANCE AND INSPECTION 7 2 Measurement of main circuit voltages currents and powers MEMO ...
Страница 171: ...170 8 SPECIFICATIONS 8 3 Outline dimension drawings MEMO ...