{"id":9778,"date":"2026-10-30T14:30:28","date_gmt":"2026-10-30T13:30:28","guid":{"rendered":"https:\/\/www.technologybsa.com\/?p=9778"},"modified":"2026-10-30T08:21:46","modified_gmt":"2026-10-30T07:21:46","slug":"compactlogix-5390-allen-bradley","status":"publish","type":"post","link":"https:\/\/www.technologybsa.com\/en\/compactlogix-5390-allen-bradley\/","title":{"rendered":"Allen-Bradley CompactLogix 5390: Machine Control, Motion and Safety"},"content":{"rendered":"

Coordinating multiple axes, managing production data and integrating safety functions requires a control platform sized for the machine\u2019s requirements. Allen-Bradley CompactLogix 5390 controllers from Rockwell Automation<\/strong> combine machine control, integrated motion, safety capabilities and local PointMax I\/O in a compact architecture.<\/p>\n

For machine builders, system integrators and manufacturers, the family provides an option for both new industrial automation projects and control system upgrades. A choice of memory sizes, network capacities and axis counts allows the system to match the application while maintaining a common control platform.<\/p>\n<\/div><\/div><\/div><\/div>

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CompactLogix 5390 performance and controller capacity<\/h2>\n

Rockwell Automation specifies performance up to twice that of CompactLogix 5380 controllers<\/strong>. User memory ranges from 400 KB to 10 MB, with each model also providing an equal amount of dedicated safety memory.<\/p>\n

The main capacities fall into three groups:<\/p>\n

\n\n\n\n\n\n\n\n
User memory<\/th>\nMaximum EtherNet\/IP nodes<\/th>\nMaximum position-loop drive axes<\/th>\nMaximum local I\/O modules<\/th>\n<\/tr>\n<\/thead>\n
400 KB to 1 MB<\/td>\n60<\/td>\n8<\/td>\n16<\/td>\n<\/tr>\n
2 MB to 5 MB<\/td>\n200<\/td>\n32<\/td>\n32<\/td>\n<\/tr>\n
10 MB<\/td>\n300<\/td>\n128<\/td>\n32<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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These limits depend on the model and are not available on every controller. System sizing requires a combined assessment of program execution, communications, I\/O and motion: individual maximum capacities are not necessarily achievable simultaneously under full load.<\/p>\n

For an OEM developing machines of different sizes, this scalability supports controller selection for each configuration while maintaining consistent design principles across the machine family.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/section>

Local PointMax I\/O for compact control panels<\/h2>\n

CompactLogix 5390 controllers use local 5034 PointMax I\/O modules<\/strong>, installed on the same DIN rail as the controller. Remote I\/O connects through EtherNet\/IP, allowing inputs and outputs to be distributed across different areas of the machine.<\/p>\n

This architecture allows local signals to be concentrated in the cabinet, with remote connections used where the layout requires them. It can support a more organised, compact system with less integration complexity. Actual reductions in footprint and wiring depend on the configuration.<\/p>\n

Configurations exceeding 16 local modules require the appropriate PointMax expansion module. Overall assembly dimensions must also account for power supplies, terminal blocks and installation clearances.<\/p>\n<\/div><\/div><\/div><\/div>

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Integrated motion and functional safety<\/h2>\n

The platform supports Integrated Motion on EtherNet\/IP<\/strong>, including synchronised multi-axis applications with compatible Kinetix drives. Depending on the model, the maximum number of drive axes configured for position-loop control is 8, 32 or 128.<\/p>\n

All CompactLogix 5390 models can be enabled for safety applications up to SIL 2 \/ PL d, Category 3<\/strong>, using the appropriate safety task and safety I\/O. Communication with networked safety devices uses CIP Safety over EtherNet\/IP.<\/p>\n

Managing machine logic, motion and safety on a common platform can simplify engineering and maintenance. The application\u2019s safety performance still depends on the correct design, configuration and validation of the complete system.<\/p>\n<\/div><\/div><\/div><\/div>

Connectivity and programming with Studio 5000<\/h2>\n

Two embedded Gigabit Ethernet ports support Dual-IP configurations and linear, star and Device Level Ring (DLR)<\/strong> topologies. OPC UA capabilities enable machine data exchange, while CIP Security and Syslog provide functions for integration into the wider industrial cybersecurity architecture.<\/p>\n

Programming uses Studio 5000 Logix Designer version 39 or later<\/strong>. Standard tasks support Ladder Diagram, Structured Text, Function Block Diagram and Sequential Function Chart; the safety task uses Ladder Diagram.<\/p>\n

For teams already working with Logix, the common development environment supports continuity between engineering and technical support. Migration projects require a review of the existing program, I\/O architecture, firmware and connected devices.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/section>

Industrial applications and controller selection criteria<\/h2>\n

Potential applications include packaging machines, material handling systems, assembly lines and dosing systems<\/strong>. These are application examples: controller suitability depends on cycle times, axis count, signals and operating conditions.<\/p>\n

Standard versions operate at ambient temperatures from \u221225 to +60 \u00b0C. XT variants extend the range to \u221240 to +70 \u00b0C and provide additional protection in corrosive gas environments.<\/p>\n

Selection therefore considers both performance requirements and installation conditions, together with expansion needs and compatibility between the components in the architecture.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/section>

Technology BSA support for CompactLogix 5390 controllers<\/h2>\n

Technology BSA, a Rockwell Automation Value-Added Distributor<\/strong>, supports machine builders, system integrators and industrial companies in selecting automation components and solutions.<\/p>\n

When evaluating a CompactLogix 5390 system, the starting point is the application: I\/O types and quantities, axes to coordinate, network architecture, safety functions and environmental conditions. For upgrade projects, the assessment also covers the installed system and migration requirements.<\/p>\n

Technology BSA\u2019s automation and PLC technical support<\/a> helps assess the configuration and associated components. Commercial availability and lead times require verification for the specific project.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/section>

Would you like more information about CompactLogix 5390?<\/h2>\n

To learn more about CompactLogix 5390 controllers or assess their suitability for a project, complete the form below. The Technology BSA team provides technical and commercial support for selecting the configuration and associated components.<\/p>\n

Contact our experts<\/strong><\/h3>\n<\/div><\/div><\/div>\n