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How an OEM turned to one company for a special interface module

March 23, 2018  

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When an interface module is needed, an original equipment manufacturer (OEM) can design and build it internally, or engage a supplier. One U.S.-based compressor manufacturer was faced with this type of make or buy decision, and it turned to Dinkle International for assistance.

Internal design and build often requires an OEM to learn new skills because the OEM is typically expert at producing its product, such as a compressor, but not at designing and building Printed Circuit Board (PCB)-based assemblies such as an interface module.

Dinkle designed and built an interface module to meet the OEM’s needs. The module uses several types of terminal blocks mounted on a PCB carrier. Dinkle was able to integrate the required electronic components, and used its existing supply chain to quickly deliver a high-quality and competitive product.

The interface module has performed flawlessly since its installation in 2016.

Dinkle supplies a number of terminal blocks and related components to its customers, such as pluggable terminal blocks, and provides design and build services for custom interface modules.

These PCB interface modules provide a means to connect field wiring to internal control and monitoring components. They can also be used to facilitate wiring among internal components.

For this application, as with many others, interface modules are used to reduce installation time, and to facilitate maintenance and troubleshooting.

The compressor OEM determined it would take a great deal of time to install each wire connection from the control side to the related action sides without an interface module, and it would be difficult to ensure each connection was tightened properly.

The interface module has a 44 pin D-sub connector, and a total of 40 poles of terminal blocks, so many connections are required. The OEM estimated a savings of 50-70 per cent in installation time by making all of these connections using Dinkle’s interface module.

From the OEM’s maintenance and troubleshooting perspective, because all the terminal blocks used are the pluggable type, the entire PCB can be easily disassembled by unplugging the terminal blocks without loosening the wire connections. This design saves a considerable amount of time if the PCB requires replacement. In addition, there are LED indicators on the PCB to quickly identify a failed connection, speeding troubleshooting.