Mitsubishi Electric MELSERVO-J3W Series, Instruction Manual

Page: 232 / 500

11. OPTIONS AND AUXILIARY EQUIPMENT
11 - 47
(d) Line noise filter (FR-BSF01)
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.
Connection diagram Outline drawing [Unit: mm]
Use the line noise filters for wires of the main power supply (L
1
L
2
L
3
) and of the motor power supply (U V W). Pass each of the
wires through the line noise filter an equal number of times in the
same direction. For the main power supply, the effect of the filter
rises as the number of passes increases, but generally four passes
would be appropriate. For the motor power supply, passes must be
four times or less. Do not pass the grounding (earth) wire through
the filter, or the effect of the filter will drop. Wind the wires by
passing through the filter to satisfy the required number of passes
as shown in Example 1. If the wires are too thick to wind, use two or
more filters to have the required number of passes as shown in
Example 2. Place the line noise filters as close to the servo
amplifier as possible for their best performance.
MC MCCB
Example 1
Power
supply
Servo amplifier
Line noise
filter
L
1
L
2
L
3
(Number of turns: 4)
MC MCCB
Line noise
filter
Example 2
Power
supply
Servo amplifier
L
1
L
2
L
3
Two filters are used
(Total number of turns: 4)
FR-BSF01 (for wire size 3.5mm
2
(AWG12) or less))
4.
5
Approx.110
95 0.5
A
p
pr
o
x.
22
.5
A
pp
ro
x.
65
Approx.65
33
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