2
-26
Installing a Noise Filter on Output Side
Connect a noise filter to the output side of the Inverter to reduce radio noise and inductive noise.
Fig 2.9 Installing a Noise Filter on the Output Side
Countermeasures Against Inductive Noise
As described previously, a noise filter can be used to prevent inductive noise from being generated on the out-
put side. Alternatively, cables can be routed through a grounded metal pipe to prevent inductive noise. Keep-
ing the metal pipe at least 30 cm away from the signal line considerably reduces inductive noise.
Fig 2.10 Countermeasures Against Inductive Noise
Inductive Noise: Electromagnetic induction generates noise on the signal line, causing the controller to malfunction.
Radio Noise: Electromagnetic waves from the Inverter and cables cause the broadcasting radio receiver to make
noise.
Power
supply
Inverter
Noise
filter
Signal line
Inductive
noise
Radio noise
AM radio
Controller
Power
supply
Inverter
Signal line
Controller
Metal pipe
30 cm min.
TOE-S616-60.1.book 26 ページ ２０１７年８月４日 金曜日 午後３時４１分
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