Emerson ControlWave - Appendix A: Special Instructions for Class I, Division 2 Hazardous Locations

ControlWave Instruction Manual (CI-ControlWave)
Appendix A – ControlWave Process Automation
Controller – Special Instructions for
Class I, Division 2 Hazardous Locations
1. The ControlWave Process Automation Controller is listed by
Underwriters Laboratories (UL) as nonincendive and is suitable for
use in Class I, Division 2, Groups A, B, C and D hazardous
locations and non-hazardous locations only. Read this appendix
carefully before installing a nonincendive ControlWave Process
Automation Controller. In the event of a conflict between the main
body of this manual and this appendix, always follow the
instructions in this appendix.
2. All power and I/O wiring must be performed in accordance with
Class I, Division 2 wiring methods as defined in Article 501-4 (b) of
the National Electrical Code, NFPA 70, for installations within the
United States, or as specified in Section 18-152 of the Canadian
Electrical Code for installation in Canada.
WARNING
EXPLOSION HAZARD
Substitution of components may impair
suitability for use in Class I, Division 2
environments.
WARNING
EXPLOSION HAZARD
When situated in a hazardous location, turn off
power before servicing / replacing the unit and
before installing or removing I/O wiring.
WARNING
EXPLOSION HAZARD
Do NOT disconnect equipment unless the
power has been switched off or the area is
known to be non-hazardous.
Revised Nov-2010 Appendix A A-1