Technology Showcase

20-Point Programmable Logic Controller

Rockwell Automation, Milwaukee, introduced the new Allen-Bradley Micro820 programmable logic controller (PLC), a new addition to the Allen-Bradley Micro800 PLC Rockwell Automation Micron820family.

The 20-point Micro820 controller features embedded Ethernet, serial ports and a microSD slot. Pulse-width modulation (PWM) output and recipe management makes it ideal for small machines, such as stretch wrappers and compressor control. Datalogging, analog and thermistor temperature inputs are essential for remote automation applications, including water-pump control and air handling units.

The Connected Components Workbench software simplifies the configuration, design and maintenance of the Micro820 controller, adding support for other machine devices, such as the Allen-Bradley Guardmaster 440C-CR30 configurable safety relay and Allen-Bradley Kinetix 3 component servo drive. It also provides password protection for application code and improved investment protection via a controller upgrade tool and multiple project sessions to collaborate between the two.

The Micro800 LCD display supports up to eight lines of ASCII text with a 4-color backlight, features a keypad with programmable function keys and is rated IP65 for mounting through a cabinet door when used as a simple operator interface. The display shows customized application diagnostics messages and text. Its system menu is available in several languages and allows machine builders to directly view and edit program variables and set the controller’s Ethernet address. The embedded USB port serves as a programming port to the controller.

The new Micro800 DeviceNet scanner plug-in option supports up to 20 nodes of Allen-Bradley PowerFlex AC drives or Allen-Bradley CompactBlock LDX I/O. This reduces the costs of wiring and installation inside the cabinet for stand-alone machine applications and outside the cabinet for conveyor applications with drives and I/O distributed over longer distances. Auto-scan and device-specific function blocks simplify programming and configuration and make for easier network diagnostics.

Rockwell Automation, Inc.
414-382-2000
www.rockwellautomation.com

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