Mitsubishi Electric MELDAS MDS-B-SVJ2 Series, Технические характеристики и инструкция по эксплуатации

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Chapter 3 Installation
3-11
Servomotor
ＳＭ
Servo
amplifier
Sensor
power
supply
Sensor
Instru-
ment
Receiver
①
②
③
④
⑤
⑥
⑦
⑧
②
⑦
Noise propaga-
tion path
Measures
① ② ③
When devices such as instruments, receivers or sensors, which handle minute signals and
are easily affected by noise, or the signal wire of these devices, are stored in the same
panel as the servo amplifier and the wiring is close, the device could malfunction due to
airborne propagation of the noise. In this case, take the following measures.
(1) Install devices easily affected as far away from the servo amplifier as possible.
(2) Lay the signals wires easily affected as far away from the input wire with the servo
amplifier.
(3) Avoid parallel wiring or bundled wiring of the signal wire and power wire.
(4) Insert a line noise filter on the input/output wire or a radio noise filter on the input to
suppress noise radiated from the wires.
(5) Use a shield wire for the signal wire and power wire, or place in separate metal ducts.
④ ⑤ ⑥
If the signal wire is laid in parallel to the power wire, or if it is bundled with the power wire,
the noise could be propagated to the signal wire and cause malfunction because of the
magnetic induction noise or static induction noise. In this case, take the following measures.
(1) Install devices easily affected as far away from the servo amplifier as possible.
(2) Lay the signals wires easily affected as far away from the input wire with the servo
amplifier.
(3) Avoid parallel wiring or bundled wiring of the signal wire and power wire.
(4) Use a shield wire for the signal wire and power wire, or place in separate metal ducts.
⑦
If the power supply for the peripheral devices is connected to the power supply in the same
system as the servo amplifier, the noise generated from the servo amplifier could back flow
over the power supply wire and cause the devices to malfunction. In this case, take the
following measures.
(1) Install a radio noise filter on the servo amplifier's power wire.
(2) Install a line noise filter on the servo amplifier's power wire.
⑧
If a closed loop is structured by the peripheral device and servo amplifier's grounding wires,
the leakage current could penetrate and cause the devices to malfunction. In this case,
change the device grounding methods and the grounding place.