Specifications

6– 24
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.
(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 Outline Drawing [Unit: mm] ([Unit: in.])
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.
FR – BLF(MR – J2 – 350A)
(for MR-J2-200A or less)
Example 1
Example 2
(Number of turns: 4)
Two filters are used
(Total number of turns: 4)
Power
supply
Power
supply
NFB
NFB
Servo amplifier
L
1
L 2
L 3
L 1
L 2
L 3
Line noise
filter
160 (6.30)
180 (7.09)
130 (5.12)
85 (3.35)
80 (3.15)
2.3 (0.09)
35
31.5 (1.24)
ø7 (0.28)
110 (4.33)
95 (3.74)
22 (0.87)
65 (2.56)
7 (0.28)
3 (0.12)
ø33 (1.3)
2– ø5 (0.20)
65 (2.56)
Connection Diagram Outline Drawing (Unit: mm) ([Unit: in.])
Make the connection cables as short as possible.
Grounding is always required.
Leakage current: 4mA
NFB
Power
supply
Servo amplifier
Radio noise
filter FR-BIF
29 (1.14)
58 (2.28)
42 (1.65)
4 (0.16)
Red BlueWhite Green
44 (1.73)
29 (1.14)
7 (0.28)
ø5 (0.20)
hole
L 1
L 2
L 3
About 300(11.81)