October, 2016 Continued from previous page
high-quality components. Another area of application for
HMIs are in CNC milling, lathing, and boring equipment. The ability to quickly visualize and control every aspect of the production environment is critical for both simple and com- plex machine tool operation. Operator controls must be designed and arranged for maximum user- friendliness to ensure error-free switching between the various pro- duction steps.
HMI System Design Process Defining the requirements is
the most critical and important step for developing an HMI system. The basic concept is to be aware that the HMI provides the user-link to all sys- tem functions, as well as exposure to a particular brand. Failure to consid- er this can affect the acceptance and usability of the entire machine and damage the equipment manufactur- er’s name in an industry.
Industrial Design and Ergo nomics. Industrial design refers to features that include shape, configuration, pattern, and ergonomics for a device designed for the machinery sector. A definition for much of the design comes from its application, such as the user environment, operating temperature range, presence of mois- ture, and ambient light require- ments. Quality is critical. A high- grade product range that contains a variety of flexible components will generate effective HMI systems.
The Mixed Technology Approach. HMI system design and manufactur- ing should focus on providing the necessary components to effectively meet customer application require- ments. A complete review of the application, functional requirements and needs of the operator should be done. This knowledge is then used to select the appropriate control tech- nology. The mixed technology approach can differentiate function, increase usability, and control pro- duction costs. No single technology satisfies every operator and end user need. A flexible approach to using multiple technologies offers cus- tomers a real competitive edge. Typical interfaces designed by
EAO include: main operator panels using discrete switches for system start-up and shutdown; emergency stop functions; handheld control units and tethered pendants with displays and short-travel keypads for data entry; and touchscreens and industrial PCs with serial bus inter- faces linking them to core systems.
Software and Interface Design. Today’s HMI solutions contain field- bus connections for communicating with complex systems. Software adaptations make it possible to con- figure and control HMI subsystems. EAO uses on-board micro-controllers and real-time operating systems that have a variety of both conventional and new communication protocols. Serial communication integra-
tion connects buttons, indicators and other components as part of a com- plete HMI solution allowing the con- trols to be configured for plug-and- play connectivity.
Meeting Standards Standards are one of the most
important considerations during the design process. The criteria specified
See at electronica, Hall B2, Stand 343 Spacers & Standoffs Plugs & Jacks Multi-Purpose Hardware IT’S WHAT’S ON THE INSIDE THAT COUNTS ® ELECTRONICS CORP.
www.keyelco.com (718) 956-8900 (800) 221-5510 HMI components including pushbuttons and a switch actuator.
www.us-tech.com Keeping People in Mind...
within general and industry-specific requirements dictate features, func- tional attributes and design ele- ments. It is usually mandatory to abide by these conditions in order to
be approved for participation within a particular market segment as they promote increased accuracy, per- formance and safety. Though it is generally under-
stood that standards benefit the end user, they can create difficulty for engineers during design. Sufficient knowledge of industry standards is required to ensure that design, pro- duction and delivery timelines are not affected. Standards affecting HMI design
include: ergonomics, design and mate- rials standards; market and applica- tion specific standard SEMI S2- 93/12.4c; IEC 60947-5-1/5 and ISO 13850; ANSI; ASTM; and safety agen- cies such as UL, cUL, CE, and VDE. Contact: EAO Corp., One
Parrott Drive, Shelton, CT 06484 % 203-951-4600 fax: 203-951-4601 E-mail:
sales.eus@
eao.com Web:
www.eao.com r
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INTERCONNECT COMPONENTS & HARDWARE
Battery Clips, Contacts & Holders
Fuse Clips & Holders
Terminals and Test Points
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