Title :
24 V DC control-an emerging alternative to legacy 120 VAC control applications in North America
Author :
Thompson, John C. ; Durocher, David B.
Author_Institution :
Cutler-Hammer Inc., Columbia, MD, USA
Abstract :
A variety of control voltages are used throughout the world for industrial process control. The most common control voltage in North America is 120 VAC. IEC standards that are widely accepted in other countries including Europe, have used 220 or 240 VAC. Over the past few years, 24 VDC is gaining acceptance. Products based on 24 VDC control are now becoming more available from major manufacturers. This paper reviews various issues associated with 24 VDC and 120 VAC control.
Keywords :
control system synthesis; power supplies to apparatus; process control; reliability; safety; 120 V; 24 V; IEC standards; North America; control system design issues; control voltages; costs; device considerations; industrial process control; power supplies; reliability; safety considerations; Circuits; Code standards; Distributed control; Industrial control; North America; Personnel; Programmable control; Protection; Safety; Voltage control;
Conference_Titel :
Pulp and Paper Industry Technical Conference, 2002. Conference Record of the 2002 Annual
Conference_Location :
Toronto, Ontario, Canada
Print_ISBN :
0-7803-7446-0
DOI :
10.1109/PAPCON.2002.1015134
