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(4) Separate
power cable from the control signal cable, and input side of the power
the
cable from the output side. Separate them by at least 10cm. (30cm or more is
recommended.)
(5) Route the control cables inside the enclosure. If a control cable extends outside the
enclosure, use a shielded cable, and connect the earth shield to the control terminal
common and do not ground (earth) it. If required, use a ferrite core that is
commercially available. The ferrite core should be installed within 10cm from the
equipment.
Ferrite core
Shielded control wire
(Connect the shield earth
to the common (SD, SE, 5)
of the control terminal)
Cable between filter and
inverter should be as
short as possible.
Separate as far as
possible. Do not wire in
parallel, nor bind them.
Cross them if there is no
other choice.
Separate the input
cable and output cable
for more than 30cm.
Shielded cable or
metal conduit
Power supply
Motor
Power supply for
control circuit
(6) Inserting the line noise filter FR-BLF or FR-BSF01, which is described in Chapter 4,
into the input or output side of the inverter improves the interference reduction effect.
<<Inverter input side>>
Line noise filter
FR-BLF
FR-BSF01
(7) Ensure to ground (earth) at the motor side.
EMC filter
Inverter
Control wire
Connection
As short as possible
Inverter
R
S
T
3 - 7
Metal panel for shielding
PLC, etc.
<<Inverter output side>>
As short as possible
Inverter
U
V
W
Line noise
filter
FR-BLF
FR-BSF01
Separate for 30cm or more
(Minimum 10 cm)
Do not wire together in
parallel.
Limit switch, sensor, etc.
Wind 3 times or less (4T)
Motor
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