Electromagnetic Compatibility (Emc); Ensuring Electromagnetic Compatibility; Grounding Of Inactive Metal Components; Pe Connection - turck IO-LINK MASTER User Manual

Electromagnetic compatibility (EMC)

Electromagnetic compatibility (EMC)

The TURCK IOs comply in full with the requirements pertaining to EMC regulations.
Nevertheless, an EMC plan should be made before installation. Hereby, all potential electro-
mechanical sources of interference should be considered such as galvanic, inductive and
capacitive couplings as well as radiation couplings.

Ensuring electromagnetic compatibility

The EMC of TURCK I/O modules is guaranteed when the following basic rules are adhered to:
Correct and large surface grounding of inactive metal components.
Correct shielding of cables and devices. The grounding lug at the Ethernet-connectors has
to be connected as low-impedance as possible to earth.
Proper cable routing – correct wiring.
Creation of a standard reference potential and grounding of all electrically operated
devices.
Special EMC measures for special applications.

Grounding of inactive metal components

All inactive metal components (for example: switchgear cabinets, switchgear cabinet doors,
supporting bars, mounting plates, tophat rails, etc.) must be connected to one another over
a large surface area and with a low impedance (grounding). This guarantees a standardized
reference potential area for all control elements and reduces the influence of coupled distur-
bances.
In the areas of screw connections, the painted, anodized or isolated metal components
must be freed of the isolating layer. Protect the points of contact against rust.
Connect all free moving groundable components (cabinet doors, separate mounting
plates, etc.) by using short bonding straps to large surface areas.
Avoid the use of aluminum components, as its quick oxidizing properties make it unsuit-
able for grounding.

PE connection

A central connection must be established between ground and PE connection (protective
earth).

Earth-free operation

Observe all relevant safety regulations when operating an earth-free system.
D301171 - IO-Link master 1108
Warning
The grounding must never – including cases of error – take on a dangerous touch
potential. For this reason, always protect the ground potential with a protective ca-
ble.
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