18 Rockwell Automation Publication 1756-UM001M-EN-P - February 2012
Chapter 1 Install the 1756-L7x Controller
Prevent Electrostatic Discharge
Removal and Insertion Under Power (RIUP)
European Hazardous Location Approval
CompactFlash/SD Card Capability
ATTENTION: This equipment is sensitive to electrostatic discharge, which can cause internal damage and affect normal
operation. Follow these guidelines when you handle this equipment:
• Touch a grounded object to discharge potential static.
• Wear an approved grounding wriststrap.
• Do not touch connectors or pins on component boards.
• Do not touch circuit components inside the equipment.
• Use a static-safe workstation, if available.
• Store the equipment in appropriate static-safe packaging when not in use.
WARNING: When you insert or remove the module while backplane power is on, an electrical arc can occur. This could
cause an explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before proceeding. Repeated electrical arcing causes excessive
wear to contacts on both the module and its mating connector. Worn contacts may create electrical resistance that can affect
module operation.
The following applies when the product bears the Ex Marking.
This equipment is intended for use in potentially explosive atmospheres as defined by European Union Directive 94/9/EC and has been found to
comply with the Essential Health and Safety Requirements relating to the design and construction of Category 3 equipment intended for use in
Zone 2 potentially explosive atmospheres, given in Annex II to this Directive.
Compliance with the Essential Health and Safety Requirements has been assured by compliance with EN 60079-15 and EN 60079-0.
ATTENTION: This equipment is not resistant to sunlight or other sources of UV radiation.
WARNING:
• This equipment must be installed in an enclosure providing at least IP54 protection when applied in Zone 2 environments.
• This equipment shall be used within its specified ratings defined by Rockwell Automation.
• This equipment must be used only with ATEX certified Rockwell Automation backplanes.
• Secure any external connections that mate to this equipment by using screws, sliding latches, threaded connectors, or
other means provided with this product.
• Do not disconnect equipment unless power has been removed or the area is known to be nonhazardous.
WARNING: When you insert or remove the Secure Digital (SD) memory card while power is on, an electrical arc can occur.
This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous
before proceeding.
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