Mitsubishi Electric MELSERVO-J3W Series Instruction Manual page 232

11. OPTIONS AND AUXILIARY EQUIPMENT
(d) Line noise filter (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
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
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
MCCB MC
Power
supply
Line noise
filter
(Number of turns: 4)
Example 2
MCCB MC
Power
supply
Line noise
filter
Two filters are used
(Total number of turns: 4)
L
1 2
Servo amplifier
L
1
L
2
L
3
Servo amplifier
L
1
L
2
L
3
11 - 47
Outline drawing [Unit: mm]
FR-BSF01 (for wire size 3.5mm
Approx.110
95 0.5
Approx.65
33
2
(AWG12) or less))
2- 5