Mitsubishi Electric MELSERVO MR-J2-A Product Specifications And Installation Manual page 186

6. OPTIONS AND AUXILIARY EQUIPMENT
(4) 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.
Connection Diagram
Wind the three-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 three-
phase wires. The filter effect will decrease. Use a
separate wire for grounding.
Example 1
NFB
Power
supply
(Number of turns: 4)
Example 2
NFB
Power
supply
Line noise
filter
Two filters are used
(Total number of turns: 4)
(5) 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.
Connection Diagram
Make the connection cables as short as possible.
Grounding is always required.
NFB
Power
supply
Radio noise
filter FR-BIF
FR – BLF(MR – J2 – 350A)
(for MR-J2-200A or less)
L
1
L
2
L
3
Servo amplifier
L
1
L
2
L
3
Servo amplifier
L
1
L
2
L
3
6– 24
Outline Drawing [Unit: mm] ([Unit: in.])
ø7 (0.28)
130 (5.12)
85 (3.35)
160 (6.30)
180 (7.09)
110 (4.33)
95 (3.74)
65 (2.56)
ø33 (1.3)
Outline Drawing (Unit: mm) ([Unit: in.])
Red White Blue Green
29 (1.14)
58 (2.28)
2– ø5 (0.20)
Leakage current: 4mA
ø5 (0.20)
hole
29 (1.14)
7 (0.28)
44 (1.73)