Mitsubishi Electric Melservo-Jet MR-JET Series User Manual page 75

■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
Noises transmitted
by servo amplifier
in the air
Magnetic induction
noise
Static induction
noise
Noise transmitted
through electric channels
(7)
Receiver
Instrument
Noise radiated directly from servo amplifier
Noise radiated from the power cable
Noise radiated from servo motor cable
Routes (4) and (5)
Route (6)
Noise transmitted through power cable
Noise sneaking from grounding cable due to leakage current
(5)
(7)
(2)
(1)
Servo
amplifier
(3)
(6)
(4)
M
Servo motor
Route (1)
Route (2)
Route (3)
Route (7)
Route (8)
(7)
Sensor
power supply
(2)
(8)
Sensor
(3)
6 OPTIONS AND PERIPHERAL EQUIPMENT
6.9 Noise reduction techniques
6
73