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Medical Appliance Tester

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This machine was designed and built by an appliance manufacturer for heat soak testing of one of their products. E Power's task was to develop the control software that the client's own engineers were having great difficulty with. Installation of the electrical equipment was undertaken by another contractor in conjunction with the client's engineering team.




80 appliances can be tested at once. The test for any individual unit can be started or stopped at any time without affecting the testing of the other units.


The Vision OPLC runs the whole process. A great deal of multiplexing is used within the code to save having to repeat the same code 80 times for each test station.


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PLC I/O modules are mounted on the insides of the doors to make good use of space. The number of modules mean that some are treated as remote, via a CANbus, rather than a direct extension of the PLC.

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