Mitsubishi Electric MELSERVO-JN Series, Instruction Manual

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11 - 38
11. OPTIONS AND PERIPHERAL 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 Outline drawing [Unit: mm]
The line noise filter can be mounted on the lines the main circuit
power supply (L1/L2) and of the servo motor power supply
(U/V/W). Pass each of 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.
MC
MCCB
MC
Line noise
filter
MCCB
Example 1
Power
supply
Servo amplifier
Line noise
filter
(Number of passes: 4)
Example 2
Power
supply
Servo amplifier
L
1
L
2
L
1
L
2
Two filters are used
(Total number of passes: 4)
FR-BSF01 (for wire size 3.5mm
2
(AWG12) or less)
4.
5
Approx.110
(2
2.
5)
Ap
pr
ox
.6
5
Approx.65
2- 5
33
11
.2
5
0.
5
95 0.5