Rockwell Automation 1747-ACNR15 ControlNet Adapter Module User Manual - Manual (Page 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)