Mitsubishi Electric Melservo-Jet MR-JET G-N1 Series, User Manual

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6 OPTIONS AND PERIPHERAL EQUIPMENT
6.10 Noise reduction techniques
93
6
■
Line noise filter (FR-BSF01)
This filter is effective in suppressing noise radiated from the power supply side and output side of the servo amplifier and also
in suppressing high-frequency leakage current (0-phase current). It is especially effective for noise between 0.5 MHz and 5
MHz band.
■ Radio noise filter (FR-BIF)
This filter is effective in suppressing noise radiated from the power supply side of the servo amplifier, especially in 10 MHz and
lower radio frequency bands. The FR-BIF(-H) is designed for the input only.
Connection diagram Dimensions [Unit: mm]
The line noise filters can be mounted on lines of the power supply (L1/L2/L3)
and of the servo motor power (U/V/W). Pass each of the wires through the line
noise filter the same number of times in the same direction. For wires of the
power supply, the effect of the filter rises as the number of passes increases,
but generally four passes would be appropriate. For the servo motor power
supply lines, passes must be four times or less. Do not pass the grounding
wire through the filter. Otherwise, the effect of the filter will drop.
Wind the wires through the line noise 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 line noise 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. Noise-reducing effect will be enhanced. FR-BSF01 (for wire size 3.5 mm
2
(AWG 12) or less)
Connection diagram Dimensions [Unit: mm]
Make the connection cables as short as possible. Grounding is required.
When using the FR-BIF with a single-phase power supply, insulate the lead
wires that are not used for wiring.
MC MCCB
L1
L2
L3
MC MCCB
L1
L2
L3
Example 1
Servo amplifier
Power
supply
Line noise
Filter
(Number of passes: 4)
Example 2
Servo amplifier
Power
supply
Line noise
Filter
For two filters
(Total number of passes: 4)
11.25 ± 0.5
2- φ 5 95 ± 0.5
φ 33
4.5
Approx. 110
Approx. 22.5
Approx. 65
Approx. 65
MC MCCB
L3
L2
L1
Terminal block Servo amplifier
Power
supply
Radio noise
filter
42
29
44
7
4
58
29
Leakage current: 4 mA
Red White Blue Green
Approx. 300
φ 5 hole