A new programming and testing device was developed and successfully delievered in shape of a functional tester (FCT) for a well-known, German manufacturer of innovative water and heating pumps. This customer provides domestic water pumps, which are able to detect, via a sensor at the forward pipe, when hot water is requested from the consumer. The pump memorizes these times and provides sufficient hot water proactively. This technique allows high energy savings. To check the drive behind the electronics of these intelligent domestic water pumps, this test system was now developed to enable the manual contacting and automatic functional test of a stator board. For this process an isolating transformer provides 230 VAC for the DUT. In order to ensure the safety an adapter lock and an emergency switch have been integrated.
Features of the FCT:
- Programming of the microcontrollers
- Functional testing of stator boards
- Measurement data acquisition in SQL database
- Machine self test with a dummy DUT
- Mechanical marking of IO parts
- Expanding the updated interface of the MCD TestManager also during the test
- Verification of NTC resistor (thermistor) by resistance measurement and calculation of the target value from the adapter temperature
- Measuring the resistances of the windings (4-wire measurement)
- Measuring the current consumption
- Measurement of motor voltages
- Checking of the power supply functions
- Touch screen monitor, UPS emergency stop and adapter lock
For more information, see the project page.
