3  Wiring and Connection
3.10.2  Precautions on Connecting Noise Filter
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3.10.2 Precautions on Connecting Noise Filter
Always observe the following installation and wiring instructions.
Do not put the input and output lines in the same duct or bundle them together.
Separate the noise filter ground wire from the output lines.
Do not accommodate the noise filter ground wire, output lines and other signal lines in the same 
duct or bundle them together.
Some noise filters have large leakage currents. The grounding measures taken also 
affects the extent of the leakage current. If necessary, select an appropriate leakage cur-
rent detector or leakage current breaker taking into account the grounding measures that 
are used and leakage current from the noise filter. Contact the manufacturer of the noise 
filter for details.
Separate these circuits 
Noise  
Filter 
Incorrect
Correct
Noise  
Filter 
Noise  
Filter 
Noise  
Filter 
Ground plate 
Ground plate 
Ground plate 
Ground plate 
Noise  
Filter 
Noise  
Filter 
The ground wire 
can be close to 
input lines. 
Ground plate 
Ground plate 
Incorrect
Correct