12 - 12
12. 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
xxx
Routes 4) and 5)
xxx
Route 1)
xxx
Route 2)
xxx
Route 3)
xxx
Route 7)
xxx
Route 8)
xxx
Route 6)
Instrument
Receiver
Servo
amplifier
Servo motor
SM
2)
2)
8)
1)
7)
7)
7)
5)
3)
4)
6)
3)
Sensor
Sensor
power
supply
24VDC
power
supply
