6 OPTIONS AND PERIPHERAL EQUIPMENT
6.14 Noise reduction techniques
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6
■Techniques for noises radiated by the servo amplifier that cause peripheral equipment 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/output), those induced electromagnetically or statically by the signal cables of the peripheral equipment
located near the main circuit cables, and those transmitted through the power supply cables.
Noise generated
by servo amplifier
Noise radiated directly from servo amplifier Route (1)
Noises transmitted
in the air
Noise radiated from the power cable
Route (2)
Noise radiated from servo motor cable
Route (3)
Magnetic induction
noise
Routes (4) and (5)
Static induction
noise
Route (6)
Noise transmitted
through electric channels
Noise transmitted through power cable
Route (7)
Noise sneaking from grounding cable due to leakage current
Route (8)
(7)
(1)
(3)
(2)
(4)
(7)
(6)
(2)
(3)
(8)
(5)
(7)
M
Sensor
power supply
Servo
amplifier
Instrument
Receiver
Sensor
Servo motor
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