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This content was submitted directly to this Web site by the supplier.Article | April 3, 2014
Rockwell Automation: Programmable logic controller
Extended Micro800 PLC family now offers more features and options to allow machine builders the scalability required for more cost-effective machine control.
Rockwell Automation announces the Allen-Bradley Micro820 programmable logic controller (PLC), a new addition to the Allen-Bradley Micro800 PLC family. The 20-point Micro820 controller features embedded Ethernet and 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.
Connected Components Workbench software simplifies the configuration, design and maintenance of the Micro820 controller. The latest version of the software adds support for additional machine devices, like the new Allen-Bradley Guardmaster 440C-CR30 configurable safety relay and Allen-Bradley Kinetix 3 component servo drive. This release also provides password protection for application code, and improved investment protection via a friendly controller upgrade tool and multiple project sessions to collaborate
between them. For those new to building machines, the software is a free download and offers built-in tutorials, manuals and user assistance.
Micro800 remote 3.5-inch LCD display. An essential accessory to the Micro820 controller, the Micro800 LCD display supports up to eight lines of ASCII text with a four-color backlight, has 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.
Micro800 DeviceNet scanner plug-in module. The new Micro800 DeviceNet scanner plug-in option for the Micro800 family of controllers 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 standalone 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 network diagnostics easier.
Micro800 motion high-speed counter plug-in module. The new Micro800 motion high-speed counter plug-in option allows machine builders to cost-effectively add high-speed counters to Micro800 controllers. Used with the Allen-Bradley Micro830 or Micro850 controller’s PTO axis, the plug-in provides position feedback from the servo drive for position verification or with an encoder for position and velocity monitoring. It supports both 5V differential line driver input up to 250 kHz and 24V DC input up to 100 kHz.
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