Harting Peak har-flex
Peak manufactures a comprehensive range of test equipment, from simple test boxes used by subcontract manufacturers to stand-alone high specification test racks and systems used in the aerospace and defence industries.
A key element of the company’s offering is the fact that all its test fixtures and interfaces are designed and manufactured in-house, which represents an increasing challenge because of the growing demand for lower-cost test solutions from customers. To accommodate this requirement, Peak needed a robust, computer-controlled interface board containing relay controls and digital inputs and outputs which could be configured flexibly to accept different customers’ test scenarios.
As such boards are not available in the marketplace at a reasonable cost, Peak took on the challenge of producing the board in-house.
The system had to be compact, low cost, expandable, robust and reliable and cover a wide voltage range, while at the same time incorporating multiple control interfaces, with one interface controlling a range of expansion modules. It also had to be compatible with multiple software drivers, and all the components used in its construction had to be fully traceable.
Harting har-flex PCB connector
The solution arrived at by Peak engineers was based around a master interface PCB which acts as the key interface between the controlling PC and all the expansion modules. It is fitted with three interfaces: USB, Ethernet and RS232. The board can be used as a stand-alone controller, or it can be “piggy-backed” onto any expansion module or alternatively connected to expansion modules using a ribbon cable for maximum flexibility. The PCB assembly has a high speed I2C interface, 23 channels of digital I/O and 256 kbits of on-board memory, all controlled by any one of the three control interfaces. The PCB has a wide voltage input range from 7 to 36 V DC, and measures only 100 × 50 mm.
The on-board memory allows storage of data such as test cycles and date of manufacture, while the digital I/O is useful for monitoring sensor inputs and switching indicators and additional relays. The I2C interface is used for all expansion module communications, but can also be used as a stand-alone interface.
A 16-channel high-power SPDT relay board is used as the expansion module. This contains 16 SPDT 12 A, 250 V AC relays for general power switching. The relays can be switched and the status can be read back by the master interface PCB. All relays have LED indication, and the PCB has the same wide voltage input range as the master interface board (7-36 V DC) and measures 100 × 220 mm. Although the relay board can be used for general switching inside test fixtures and systems, it can also be used in many other applications.
HARTING har-flex® connectors were selected for board connectivity due to their small size, robustness and flexibility. They can be used as board-to-board connectors, allowing the master interface PCB to be connected to any expansion module directly; alternatively, the same connector can have a ribbon cable connected to connect subsequent expansion modules.
The small size of the connector allowed Peak to increase the pin count, allowing power lines to be commoned up and all communications and power to be passed down a single ribbon cable. As a result, expansion modules could be added in a matter of seconds.
HARTING’s har-flex® family is a general-purpose PCB connector series based on a 1.27 mm grid with SMT termination technology. With its straight, angled and cable variants, har-flex® provides connectivity solutions for many different board-to-board and cable-to-board applications.
The different stacking heights of the mezzanine connectors and the flexible IDC connector cable lengths offer a high degree of freedom to the system design. A broad choice of configurations between six and 100 contacts in even-numbered positions is available.
For further information on the har-flex please click here http://www.harting.co.uk/har-flex?utm_source=rss&utm_medium=rss
About HARTING
The HARTING Group develops, manufactures and distributes electrical and electronic connectors, network components, pre-assembled system cables, and backplane assemblies. These products are capable of withstanding the harshest demands in industrial environments and provide high data rates for electronic applications.
HARTING connectors and network components are used in mechanical engineering and plant manufacturing, in automation systems, energy generation and distribution, and in electronic and telecommunication markets. Industrial connectors are also vital in construction machinery, rail vehicles and shipbuilding. HARTING offers Ethernet network components and cable systems for both indoor and outdoor networking applications involving power and data.
HARTING today employs a workforce of nearly 4000 in 40 countries. For further information visit www.HARTING.co.uk?utm_source=rss&utm_medium=rss
About Peak Production
Established in 1984, Peak Production Equipment, part of the Peak Group, is a long established manufacturer of test racks, systems and fixtures, principally in the area of functional test but also covering in-circuit testing. Peak has built a strong, loyal customer base within the aerospace, space, defence, and automotive industries, where the company’s expertise in the manufacture of complex and demanding test solutions is valued. An ISO 9001 certified company, Peak continues to forge close relationships with like-minded customers and suppliers, and works closely with them to deliver robust, quality solutions.
Based in Hertfordshire, UK, Peak employs over 50 personnel, designing and manufacturing products in-house. Visit the company’s web site at www.thepeakgroup.com?utm_source=rss&utm_medium=rss to obtain full details of products and services.
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