Precautions For Use - Orientalmotor FE100 Operating Manual

3 Precautions for use

3 Precautions for use
This chapter explains the limitations and other items the user must note when using
the inverter.
Selection
• Always use the inverter with Oriental Motor's three-phase motor. Check the
permitted inverter/motor combinations in 4.2, "Motor/Inverter combinations" on
p.15.
• If a large-capacity power transformer (600 kVA or more) is connected to the
inverter, always install a DC reactor. Installing a DC reactor will improve the
power factor of the power supply. If any thyristor converter, such as a DC drive, is
connected to the inverter's power supply, always install a DC reactor regardless of
the condition of power supply. For the peripherals that should be used with the
inverter, refer to 11.3 "Recommended peripherals" on p.58. Installing a DC
reactor will lower the DC voltage of the inverter's main circuit. Therefore, in a
high-speed range the motor torque may drop and thereby cause the inverter's
output current to rise beyond the rated output current.
Therefore, if you are connecting a DC reactor, keep the load to 80% of the
allowable torque or below so as not to cause the output current to exceed the rated
current.
• The explanations given in this manual assume an operating configuration
consisting of one motor and one inverter. If you need to operate multiple motors
with one inverter, please contact our Customer Service Center.
• Upon detection of abnormality, an appropriate protective function of the inverter
will actuate to automatically stop the inverter output. However, the inverter's
protective functions cannot stop the motor quickly enough to ensure higher levels
of safety for your equipment. If your equipment requires an emergency-stop
function, provide a mechanical means for stopping the motor/retain the load.
Installation
• When installing the inverter, select a place with clean air free from oil mist, cotton
fly, dust or other suspended matters. Also, install the inverter in a fully sealed
enclosure that shuts out any suspended matters. If the inverter is installed in a
panel, select an appropriate cooling method and enclosure dimensions to keep the
inverter ambience from exceeding the allowable temperature.
• So that the heat generated from the inverter can be effectively exhausted, always
install the inverter vertically with the display side facing up. For the installation
method, refer to 5.2 "Installation condition" on p.22.
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