Grounding and shielding
Grounding and shielding problems are most widely spread among industrial sensors due to high electromagnetical noise contamination level. In order to achieve acceptable level of signal integrity it is necessary to:
- connect the cable screen to the GND chain;
- connect the cable shield (if any) to the power supply grounding chain (yellow-green wire) via 1-10 µF capacitor rated at 500 V and connected to 200-500 Ohm, 2W resistor in parallel;
- when connecting ZETSENSOR modules to the line it is necessary to connect the screen to GND chain. Each cable’s shield should be connected to module’s casing.