Noise Reduction Products - Mitsubishi Electric Melservo-H Series Specifications And Instruction Manual

9. OPTIONS AND AUXILIARY EQUIPMENT

9.2.4 Noise reduction products

(1) Line noise filter (FR-BLF)
This filter is effective in suppressing noises radiated from the power supply side and output side of the
servo amplifier and also in suppressing high-frequency leakage current (zero-phase current) especially
within 0.5MHz to 5MHz band. The filters are used with the converter power supply wires (L1•L2•L3)
and servo amplifier power wires (U•V•W).
(a) Usage
Pass the three-phase wires through four line noise filters. When using the line noise filters with
the power wires, passing the power wires together with the ground wire will reduce the filter effect.
Run the ground wire separately from the power wires.
(b) Outline drawing
7 (0.28)
130(5.12)
85(3.35)
160(6.30)
180(7.09)
(2) Radio noise filter (FR-BIF)
This filter is effective in suppressing noises radiated from the power supply side of the servo amplifier
especially in 10MHz and lower radio frequency bands. The radio noise filter is designed for the input
only.
Connection Diagram
Make the connection cables as short as possible.
Grounding is always required.
NFB
Power
supply
Radio noise
FR-BIF-H
Use four FR-BLFs.
Converter
unit
L1
L2
L3
filter
Outline Drawing (Unit: mm) ([Unit: mm.])
Red White Blue Green
29
(1.14)
58(2.28)
9 - 13
Leakage current: 4mA
5(0.20) hole
29(1.14) 7
(0.28)
44
(1.73)