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4.5
Line noise filter
This filter is effective in suppressing noise radiated from the power supply side and output side of the servo amplifier and also
in suppressing high-frequency leakage current (0-phase current). It is especially effective for noise between 0.5 MHz and 5
MHz band.
Connection example
The line noise filters can be mounted on lines of the main circuit power supply (L1/L2/L3) and of the servo motor power supply
(U/V/W). Pass each of the wires through the line noise filter the same number of times in the same direction.
Wind the wires through the line noise filter to satisfy the required number of passes. If the wires are too thick to wind, use two
or more line noise filters to have the required number of passes.
Use the following models of the line noise filter in accordance with the capacity of the servo amplifier, converter unit, and drive
unit.
2 kW or less: FR-BSF01 (for the wire size of 3.5 mm2 (AWG12) or less) 3.5 kW or more: FR-BLF (for the wire size of 5.5 mm2
(AWG10) or less)
When using one line filter
Power
supply
(4 times pass)
When using two line filters separately
Power
supply
Servo amplifier
(Converter unit)
L1
L2
L3
Servo amplifier
(Converter unit)
L1
L2
L3
(4 times pass)
4 EMC COUNTERMEASURE PARTS
4.5 Line noise filter
4
21
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