4 Rockwell Automation Publication 1769-IN023C-EN-P - January 2022
CompactLogix 5370 L3 Controller Installation Instructions
Special Considerations for Safe Use
WAR NIN G:
• This equipment shall be mounted in an ATEX Zone 2 certified enclosure with a minimum ingress protection rating of at least IP54 (in accordance with
EN 60079-0) and used in an environment of not more than Pollution Degree 2 (as defined in EN 60664-1). The enclosure must be accessible only by the
use of a tool.
• This equipment must be used within its specified ratings that are defined by Rockwell Automation.
• Provision must be made to prevent the rated voltage from being exceeded by transient disturbances of more than 140% of the peak rated voltage when
applied in Zone 2 environments.
• 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.
• Enclosure must be marked with the following: “Warning - Do not open when energized.” After installation of equipment into the enclosure, access to
termination compartments must be dimensioned so that conductors can be readily connected.
• The instructions in the user manual shall be observed.
• This equipment must be used only with ATEX certified Rockwell Automation backplanes.
• Earthing is accomplished through mounting of modules on rail.
• Devices shall be used in an environment of not more than Pollution Degree 2.
• This equipment is not resistant to sunlight or other sources of UV radiation.
Energy Storage Considerations
WAR NIN G: This product contains stored energy. If your application requires the controller to deplete its residual stored energy to 40 μJ or less before you
transport it into or out of the application, use only the 1769-L30ER-NSE controller. Complete these steps before you remove the controller.
1. Turn off power to the chassis.
2. After you turn off power, the controller’s OK status indicator transitions from green to steady red to OFF.
3. Wait at least 15 minutes for the residual stored energy to decrease to 40 μJ or less before you remove the controller.
4. There is no visual indication of when the 15 minutes has expired. You must track that time period.
Prevent Electrostatic Discharge
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.
Removal and Insertion Under Power
ATTENTION: The CompactLogix 5370 L3 control systems do not support removal and insertion under power (RIUP). These events occur while the
CompactLogix system is under power:
• Any break in the connection between the power supply and the controller, for example, removing the power supply, controller, or an I/O controller, can
subject the logic circuitry to transient conditions above the normal design thresholds and can result in damage to system components or unexpected
behavior.
• Removing an end cap or an I/O controller faults the controller and can also result in damage to system components.
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