Mitsubishi Electric Melservo MR-J3-A Instruction Manual page 346

12. OPTIONS AND AUXILIARY EQUIPMENT
(d) Line noise filter (FR-BSF01, FR-BLF)
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 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
NFB
Power
supply
Line noise
filter
(Number of turns: 4)
Example 2
MC
NFB
Power
supply
Line noise
filter
Two filters are used
(Total number of turns: 4)
(e) Radio noise filter (FR-BIF(-H))
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.
When using the FR-BIF(-H) with a single-phase wire,
always insulate the wires that are not used for wiring.
NFB
Power
supply
200V class: FR-BIF
400V class: FR-BIF-H
MC
Servo amplifier
L
1
L
2
L
3
Servo amplifier
L
1
L
2
L
3
Servo amplifier
MC
L
1
L
2
L
3
Radio noise
filter FR-BIF
(-H)
Outline drawing [Unit: mm]
FR-BSF01 (for MR-J3-200A or less)
FR-BLF(MR-J3-350A or more)
Outline drawing (Unit: mm)
Red White Blue
29
58
12 - 73
Approx.110
2- 5
95 0.5
Approx.65
33
7
130
85
160
180
Leakage current: 4mA
Green
hole
29
44
5
7