Fuji Electric frenic mini series, User Manual

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v
Control circuit
wiring length
When using remote control, limit the wiring length between the inverter
and operator box to 20 m or less and use twisted shielded cable.
Wiring length
between inverter
and motor
If long wiring is used between the inverter and the motor, the inverter will
overheat or trip as a result of overcurrent (high-frequency current flowing
into the stray capacitance) in the wires connected to the phases. Ensure
that the wiring is shorter than 50 m. If this length must be exceeded, lower
the carrier frequency or mount an output circuit filter (OFL).
Wiring size
Select cables with a sufficient capacity by referring to the current value or
recommended wire size. For details about the ambient temperature and
wire types, refer to Chapter 6, Section 6.2 "Selecting Wires and Crimp
Terminals" and Appendices, App. G "Allowable Current of Insulated
Wires."
Wiring type Do not use multicore cables.
Wiring
Grounding Securely ground the inverter using the grounding terminal.
Driving general-
purpose motor
Select an inverter according to the applicable motor ratings listed in the
standard specifications table for the inverter.
When high starting torque is required or quick acceleration or deceleration
is required, select an inverter with a capacity one size greater than the
standard. Refer to Chapter 7, Section 7.1 "Selecting Motors and Inverters"
for details.
Selecting
inverter
capacity
Driving special
motors
Select an inverter that meets the following condition:
Inverter rated current > Motor rated current
Transpor-
tation and
storage
When transporting or storing inverters, follow the procedures and select locations that meet the
environmental conditions listed in the FRENIC-Mini Instruction Manual, Chapter 1, Section 1.3
"Transportation" and Section 1.4 "Storage Environment."