Line Noise Filter (Fr-Blf) - Mitsubishi Electric Melservo-J3 Series MR-J3-B Instruction Manual

11. 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
Use the line noise filters for wires of the main power supply (L
L ) and of the motor power supply (U V W). Pass each of the
3
3-phase wires through the line noise filter an equal number of
times in the same direction. For the main power supply, the effect
of the filter rises as the number of passes increases, but generally
four passes would be appropriate. For the motor power supply,
passes must be four times or less. Do not pass the grounding
(earth) wire through the filter, or the effect of the filter will drop.
Wind the wires by passing through the filter to satisfy the required
number of passes as shown in Example 1. If the wires are too
thick to wind, use two or more filters to have the required number
of passes as shown in Example 2. Place the line noise filters as
close to the servo amplifier as possible for their best performance.
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 (-H) 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 with a single-phase power
supply, 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]
L
1 2
FR-BSF01 (for wire size 3.5mm
FR-BLF(for wire size 5.5mm
Outline drawing (Unit: mm)
Red White Blue
29
58
11 - 80
2
(AWG12) or less))
Approx.110
2- 5
95 0.5
Approx.65
33
2
(AWG10) or more))
7
130
85
160
180
Leakage current: 4mA
Green
hole
29
44
5
7