Rockwell Automation AADvance Controller Safety Manual User Manual
Page 67
Document: 553630
ICSTT-RM446K-EN-P Issue: 10
_C
4-11
UL 508
This standard defines the Safety Requirements for Industrial Control
Equipment. It covers systems utilizing a programmable memory for storage of
user-oriented instructions for specific functions such as logic, sequencing,
counting and controlling various industrial equipment through digital or analog
inputs or outputs.
The UL standards can also be used to investigate equipment for use in
hazardous locations such as:
The possible presence of an explosive atmosphere such as flammable gas,
vapors or liquids (Class I), combustible dusts (Class II) or ignitable fibers
(Class III); the likelihood that the explosive atmosphere is present when
equipment is operating; or the ignition-related properties of the explosive
atmosphere that is present.
An area may also be considered "hazardous" for other reasons, such as the
use of electrical equipment inthe vicinity of water, the risk of personal
injury from moving or falling parts, or even the presence of biological
hazards.
This approach to classifying hazardous locations is used by the United
States (National Electrical Code), Canada (Canadian Electrical Code),
Europe (CENELEC EN60079-10) and throughout the world (IEC 60079-
10).
While hazards are associated with all of these conditions, areas are only
considered hazardous (classified) locations under definitions defined by the
NEC, CEC, IEC 60079-10, or CENCELEC EN 60079-10, as applicable.
The AADvance controller has been investigated and approved by UL for use as
Industrial Control Equipment in a general industrial environment and for use in
hazardous locations, Class I, Division 2, Groups A, B, C and D.