Advantech RS-485 user manual Figure F-11 System Shielding

Appendix F

Besides, following tips just for your reference.

•The shield of cable can’t be used for signal ground.

The shield is just designed for adhering noise, so the environment noise will couple and interfere your system when you use the shield as signal ground.

•The density of shield is the higher the better, especially for commu- nication network.

•Use double isolated cable for communication network / AI / AO.

•Both sides of shields should be connected to their frame while inside the device. (for EMI consideration)

•Don’t strip off too long of plastic cover for solderinF.

2.2System Shielding

	ADAM	ADAM	ADAM
RS-232	4520	4013	4017

ADAM

4021

Terminal Block

* Never stripping too long of the plastic cable cover.
* Cascade those shields together by Soldering	.

+24V

Power Supply

Connect the shield to Frame-Ground of DC Power Supply.

Figure F-11: System Shielding

ADAM-5000 F-11