Panasonic AFP7X16DW User Manual page 42

Wiring
 Earth
 In order to avoid the effects of noise, be sure to ground the AFP7Y16R terminal.
 The grounding connection should have a resistance not in excess of 100Ω.
 The point of grounding should be as close to the PLC as possible. The ground wire should
be as short as possible.
 Sharing the ground with another device may have an adverse effect. Therefore, be sure that
grounding is dedicated.
Notes:
Sharing the ground with another device may have an adverse effect. Therefore, be sure that
grounding is dedicated.
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