v
Control circuit
wiring length
When using remote control, limit the wiring length between the inverter and
operator panel to 20 m or less and use twisted pair or shielded wire.
Wiring length
between inverter
and motor
If long wiring is used between the inverter and the motor, the inverter may
overheat or trip due to overcurrent because a higher harmonics current
flows into the stray capacitance between each phase wire. Ensure that the
wiring is shorter than 50 m. If this length must be exceeded, lower the
carrier frequency or install an output circuit filter (OFL).
Wire size
Select wires with a sufficient capacity by referring to the current value or
recommended wire size.
Wire type
Do not share one multi-core cable in order to connect several inverters with
motors.
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 one rank larger capacity 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-Multi Instruction Manual (INR-SI47-1094-E),
Chapter 1, Section 1.3 "Transportation" and Section 1.4 "Storage Environment."
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