Mitsubishi Electric MELSERVO-J2 Series Instruction Manual page 257

14. OPTIONS AND AUXILIARY EQUIPMENT
(d) Line noise filter (FR-BLF, 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.
Wind the 3-phase wires by the equal number of times in the
same direction, and connect the filter to the power supply side
and output side of the servo amplifier.
The effect of the filter on the power supply side is higher as the
number of winds is larger. The number of turns is generally four.
If the wires are too thick to be wound, use two or more filters
and make the total number of turns as mentioned above.
On the output side, the number of turns must be four or less.
Do not wind the grounding wire together with the 3-phase wires.
The filter effect will decrease. Use a separate wire for grounding.
Example 1
Power
supply
Example 2
Power
supply
(e) Radio noise filter (FR-BIF)...for the input side only
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 FR-BIF is designed for the
input only.
Make the connection cables as short as possible.
Grounding is always required.
Power
supply
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Connection diagram
NFB
Servo amplifier
L
1
L
2
Line noise
L
3
filter
(Number of turns: 4)
NFB
Servo amplifier
L
1
L
2
Line noise
L
3
filter
Two filters are used
(Total number of turns: 4)
Connection diagram
Servo amplifier
NFB
Radio noise
filter FR-BIF
search engine
Outline drawing [Unit: mm] ([Unit: in.])
FR-BSF01 (for MR-J2-200C or less)
FR-BLF(MR-J2-350C or more)
Outline drawing (Unit: mm) ([Unit: in.])
Red White
L
1
L
2
29 (1.14)
L
3
58 (2.28)
14 - 30
Approx.110
95 0.5
Approx.65
33
7
130
85
160
180
Leakage current: 4mA
Blue Green
29 (1.14)
44 (1.73)
2- 5
5 (0.20)
hole
7 (0.28)