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Options and auxiliary equipment – MITSUBISHI ELECTRIC MR-J2S- CP User Manual

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14. OPTIONS AND AUXILIARY EQUIPMENT

(c) Techniques for noises radiated by the servo amplifier that cause peripheral devices to malfunction

Noises produced by the servo amplifier are classified into those radiated from the cables connected
to the servo amplifier and its main circuits (input and output circuits), those induced
electromagnetically or statically by the signal cables of the peripheral devices located near the
main circuit cables, and those transmitted through the power supply cables.

Noises produced
by servo amplifier

Noises transmitted
in the air

Noise radiated directly
from servo amplifier

Magnetic induction
noise

Static induction
noise

Noises transmitted
through electric
channels

Noise radiated from the
power supply cable

Noise radiated from
servo motor cable

Noise transmitted through
power supply cable

Noise sneaking from
grounding cable due to
leakage current

Routes 4) and 5)

Route 1)

Route 2)

Route 3)

Route 7)

Route 8)

Route 6)

Instrument

Receiver

Servo

amplifier

Servo motor

M

2)

2)

8)

1)

7)

7)

7)

5)

3)

4)

6)

3)

Sensor

power

supply

Sensor