14 - 30
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.
Connection diagram
Outline drawing [Unit: mm] ([Unit: in.])
FR-BSF01 (for MR-J2-200C or less)
4.
5
Approx.110
95 0.5
A
pp
ro
x.
2
2.
5
A
pp
ro
x.
65
Approx.65
33
2- 5
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 2
Two filters are used
(Total number of turns: 4)
Power
supply
Servo amplifier
Line noise
filter
NFB
L
3
L
1
L
2
Example 1
(Number of turns: 4)
Power
supply
NFB
L
1
L
2
L
3
Servo amplifier
Line noise
filter
FR-BLF(MR-J2-350C or more)
160
180
130
85
8
0
2
.3
35
7
31
.5
7
(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.
Connection diagram
Outline drawing (Unit: mm) ([Unit: in.])
Make the connection cables as short as possible.
Grounding is always required.
NFB
Power
supply
Servo amplifier
Radio noise
filter FR-BIF
L
1
L
2
L
3
Leakage current: 4mA
29 (1.14)
58 (2.28)
42
(
1.
65
)
4
(0
.1
6)
Red
Blue
White
Green
44 (1.73)
29 (1.14)
7 (0.28)
5 (0.20)
hole
A
b
ou
t 3
00
(1
1
.8
1)
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