Batch controller's fieldbus interface increases flexibility

Milpitas, Calif. - A&D Weighing recently introduced its AD-4402, a high-speed controller that can be used as a standalone batching unit or as part of a large multi-function system.

06/04/2002


Milpitas, Calif. - A&D Weighing recently introduced its AD-4402, a high-speed controller that can be used as a standalone batching unit or as part of a large multi-function system.

The firm states its new controller's networking, communications and software programming, combined with its large database storage capacity, provides added flexibility in many applications, such as batching, automatic mixing, filling and checkweighing. To improve accuracy in high-speed, filling-materials applications, AD-4402 uses a forecast control mode that automatically adjusts hopper discharge with a 1-millisecond response.

A standard RS-485 interface allows up to 32 AD-4402 controllers to be networked to one programmable logic controller (PLC), personal computer or other equipment supporting Modbus protocol. This networking approach uses simple wiring to lower implementation costs. Data entry, updating, recalling parameters and control commands are handled directly from the PLC or PC.

Connectivity via the growing number of fieldbus devices in batching systems is available using CC-Link, DeviceNet or Profibus interfaces options. Other interface options include Binary Coded Decimal, relay, analog output, RS-422/RS-485, RS-232C and Parallel I/O.

AD-4402's software programming stores up to 100 raw material and 100 recipe codes, while each recipe code contains up to 10 materials. It also provides programming for sequencing, target weights, as well as fast, slow and dribble feed. The 11 outputs and 11 inputs can be set up using one of the 50 preprogrammed function codes for functions, such as filling, over, under, discharge bin, mixing, emergency stop and error signals.

The controller has an internal resolution of 1 million counts, maximum display resolution of 16,000 counts and A/D conversion rate of 100 times per second. It also includes digital span with gravity acceleration.

Control Engineering Daily News Desk
Dave Harrold, senior editor
dharrold@cahners.com





No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Intelligent, efficient PLC programming: Cost-saving programming languages are available now; Automation system upgrades; Help from the cloud; Improving flow control; System integration tips
Smarter machines require smarter systems; Fixing PID, part 3; Process safety; Hardware and software integration; Legalities: Integrated lean project delivery
Choosing controllers: PLCs, PACs, IPCs, DCS? What's best for your application?; Wireless trends; Design, integration; Manufacturing Day; Product Exclusive
PLCs, robots, and the quest for a single controller; how OEE is key to automation solutions.
This article collection contains several articles on improving the use of PID.
Learn how Industry 4.0 adds supply chain efficiency, optimizes pricing, improves quality, and more.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Special report: U.S. natural gas; LNG transport technologies evolve to meet market demand; Understanding new methane regulations; Predictive maintenance for gas pipeline compressors
Cyber security cost-efficient for industrial control systems; Extracting full value from operational data; Managing cyber security risks
Drilling for Big Data: Managing the flow of information; Big data drilldown series: Challenge and opportunity; OT to IT: Creating a circle of improvement; Industry loses best workers, again