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Compact I/O Expansion Power Supplies
Always hard-wire circuits that are installed on the machine for safety reasons directly to the
master control relay. Examples include overtravel limit switches, stop push buttons, and
interlocks. These devices must be wired in series so that when any one device opens, the master
control relay is de-energized, which removes power from the machine.
ATTENTION: Never alter these circuits to defeat their function. Serious injury or machine damage
could result.
European Hazardous Location Approval
Only 1769-PB2 and 1769-PB4 power supplies
European Zone 2 Certification (The following applies when the product bears the Ex Marking):
• Are Equipment Group II, Equipment Category 3, and comply with the Essential Health
and Safety Requirements relating to the design and construction of such equipment
given in Annex II to Directive 2014/34/EU. See the EC Declaration of Conformity at
http://www.rockwellautomation.com/products/certification
• The type of protection is "Ex nA IIC T4 Gc" according to EN 60079-15.
• Comply to Standards EN 60079-0:2012, EN 60079-15:2010, reference certificate
number ITS09ATEX46118X.
• Are intended for use in areas in which explosive atmospheres caused by gases, vapors,
mists, or air are unlikely to occur, or are likely to occur only infrequently and for short
periods. Such locations correspond to Zone 2 classification according to ATEX directive
1999/92/EC.
WARNING: Special Conditions for Safe Use:
• This equipment is not resistant to sunlight or other sources of UV radiation.
• This equipment shall be mounted in an ATEX Zone 2 certified enclosure with a minimum
ingress protection rating of at least IP54 (as defined in EN 60529) and used in an environment
of not more than Pollution Degree 2 (as defined in EN 60664-1) when applied in Zone 2
environments. The enclosure must be accessible only by the use of a tool.
• This equipment shall be used within its specified ratings defined by Rockwell Automation.
• Provision shall be made to prevent the rated voltage from being exceeded by transient
disturbances of more than 140% of the rated voltage when applied in Zone 2 environments.
• This equipment must be used only with ATEX certified Rockwell Automation backplanes.
• Do not disconnect equipment unless power has been removed or the area is known to be
nonhazardous.
• Secure any external connections that mate to this equipment by using screws, sliding latches,
threaded connectors, or other means provided with this product.
6
Rockwell Automation Publication 1769-IN028C-EN-P - August 2016
for details.
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