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New PACs deliver powerful performance for midrange applications

30 April 2012

Extending the scalability of the Allen-Bradley Logix family of controllers, the new Allen-Bradley L1, L2 and L3 CompactLogix programmable automation controllers (PACs) provide a powerful, scalable Logix-based system for small-and mid-size applications. These controllers are suitable for smaller, machine-level control applications, which may also require integration into production lines.

Sitting at the heart of this midrange product offering is the controller family, positioned midway between the smaller Micro800 stand-alone control platform and the more powerful Integrated Architecture based ControlLogix PACs. These EtherNet/IP-based controllers are available with dual Ethernet ports and an integrated Ethernet switch on all units. They also support Device Level Ring (DLR) network topologies, providing resilience to the loss of a network connection and reducing the number of Ethernet switches in the control system.

They also offer open socket capability that allows support for Modbus TCP, as well as devices such as printers, barcode readers and servers. Also included is built-in energy storage, which avoids the need for batteries, and a removable 1GB secure digital (SD) card for fast program save and restore.

The CompactLogix 5370 L1 variant is available in three models (L16ER, L18ER and L18ERM). They combine the power of the Logix architecture with the flexibility of POINT I/O. Ideal for smaller size machines, these controllers offer value to customers seeking the benefits of Integrated Architecture but with just the right control size. They support up to two axes of integrated CIP motion over EtherNet/IP and, together with the Kinetix 350, offer cost-effective, scalable motion control.

The CompactLogix 5370 L2 variant come in three models (L24ER-QB1B, L24ER-QBFC1B and L27ERM-QBFC1B), which deliver scalable, affordable control in a space-saving form factor. From small standalone equipment to higher performance applications, the these controllers are ideal for assembly machines, hoisting systems, process skids, indexing tables, and packaging. They provide a four-axis motion capability and also support Kinematics, which avoids the need for additional robot controllers and software.

CompactLogix 5370 L3 range, comprising six models (L30ER, L30ERM, L30ER-NSE, L33ER, L33ERM and L36ERM), delivers scalable, affordable control for applications ranging from from small, standalone equipment to high-performance indexing tables, process skids, case packers and erectors and packaging. They also provide an integrated, cost effective and scalable motion solution together with the Kinetix 350, supporting up to 16 axes of integrated CIP motion over EtherNet/IP.

The No Stored Energy (NSE) version of the CompactLogix 5370 L3 offers additional features for hazardous area use. These features allow the safe transport of the controller in and out of hazardous areas, because, when powered down, they have less than 200uJ of residual energy stored in each component. The L3 also supports the reuse of existing 1769 I/O, offers flexible memory options up to 3MB and, like the other units in the range, supports Kinematics, which eliminates the need for additional robot controllers and software.

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