Mitsubishi Electric FR-E500 Instruction Manual page 50

3) Measures against noises which are radiated by the inverter causing misoperation of
peripheral devices.
Inverter-generated noises are largely classified into those radiated by the cables
connected to the inverter and inverter main circuit (I/O), those electromagnetically
and electrostatically inducted to the signal cables of the peripheral devices close to
the main circuit power supply, and those transmitted through the power supply
cables.
Inverter-generated
noise
Air-propagated
noise
Magnetic induc-
NNN
tion noise
Static induction
NNN
noise
Cable Propaga-
ted noise
5)
7)
7)
2)
1)
Receiver
Inve-
rter
3)
4)
Instrument
Motor IM
37
INSTALLATION AND WIRING
Noise directly radiated by
inverter
Noise radiated by power
cables
Noise radiated by motor
cables
Path 4), 5)
Path 6)
Noise propagated through
power cables
Leakage noise from ground
cable due to leakage current
Telephone
Sensor power
supply
2)
6)
8)
Sensor
3)
Path 1)
NNN
Path 2)
NNN
Path 3)
NNN
Path 7)
NNN
Path 8)
NNN
2