Power Electronics SD750K, Руководство по аппаратному обеспечению и установке

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POWER ELECTRONICS SD750K
MAINTENANCE
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MAINTENANCE
The SD750 Kompakt drives are industrial electronic products that contain advanced semiconductor
elements. For this reason, temperature, humidity, vibrations and worn components can affect performance.
To avoid any possible irregularities, it is recommended to carry out periodic inspections.
WARNING
Ensure to follow all instructions to safely carry out maintenance tasks.
Otherwise, you could cause damages to the equipment and personnel.
Warnings
Make sure to remove the input power while performing maintenance.
Make sure to perform maintenance after checking the DC Link capacitor has discharged. Check that the
voltage between terHVDC and -HVDC is below DC 30V. The bus capacitors in the drive main
circuit can still be charged even after the power is turned off. Wait until the capacitors have been
discharged before carrying out any maintenance task.
The correct output voltage of the drive can only be measured by using an RMS voltage meter. Others
voltage meters, including digital voltage meters, are likely to display incorrect values caused by the high
frequency PWM output voltage of the drive.
Routine Inspection
It is necessary to perform periodic inspections of the drive. The frequency of the tasks shown in the table
below are recommended, the times indicated depend on the working conditions in each case.
Tasks with monthly recommendation must be performed, at least, every three months.
Make sure to check the following points before handling the drive:
•
Installation site conditions.
•
Drive cooling system conditions.
•
Excessive vibrations or noise in the motor.
•
Excessive overheating.
•
Normal output current value on the monitor.
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