Rockwell-automation 1747-ACNR15 ControlNet Adapter Module User Manual Uživatelský manuál stáhnout pdf (Strana 98)

Publication 1747-UM003A-EN-P

B-6 Understanding Your SLC 500/1746 Control System

This section provides specific recommendations to help you install your SLC

500/1746 components. For general installation guidelines, also refer to the

requirements specific to your region.

SLC 500 System Installation

Recommendations

• Europe: Reference the standards found in EN 60204 and your national

regulations.

• United States: Refer to article 70E of the National Fire Protection

Association (NFPA). It describes electrical safety requirements for

employee workplaces.

Typical Installation

The figure below consists of some components that make up a typical

installation.

Selecting an Enclosure

The enclosure protects the equipment from atmospheric contamination.

Standards established by the International Electrotechnical Commission (IEC)

and National Electrical Manufacturer’s Association (NEMA) define enclosure

types based on the degree of protection an enclosure provides. Select an IEC-

or NEMA-rated enclosure that suits your application and environment.

(2) Disconnect Device

(3) Isolation Transformer

SLC 500 Chassis

(1) An IEC- or NEMA-rated enclosure suitable for your

application and environment that shields your adapter from

electrical noise and airborne contaminants.

(2) Disconnect device that allows you to remove power from

system.

(3) Fused isolation transformer or a constant voltage

transformer, as your application requires.

(4) Master control relay/emergency-stop circuit.

(5) Terminal blocks or wiring ducts.

(6) Suppression devices for limiting electromagnetic

interference (EMI) generation.

(1)

(4)

(6)

(5)

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Rockwell-automation 1747-ACNR15 ControlNet Adapter Module User Manual Uživatelský manuál Strana 98