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AIR CONDITIONING MOTOR CONTROLLER

functional testing

Project Case

Function test of air conditioning motor controller

In the household appliance industry, air conditioning has generally become the public’s first choice. Facing the temperature adjustment and long-term operation in different environments, the working requirements of its internal motor controller are more and more strict, and the required performance testing is more and more accurate. In order to achieve high-quality and high-precision functional test, the precise test of air-conditioning motor controller is realized through the cooperation of multiple instruments.

Test requirements

  • Fully automatic test
  • Voltage test
  • No-load dynamic detection of FG waveform test
  • Hall UVW waveform test
  • Oscilloscope dynamic test
  • Support scan code test
  • Support MES docking function
  • Data reading, writing and storing functions

EMBODIMENT

The scheme flow chart is as follows

In combination with the realization of its power test requirements, PTI company has met all the required test functions with non-standardized equipment PTI-300 through various technical evaluations, so this project uses PTI-300 for scheme implementation.

DETAILED PLAN

Components of test equipment

Instrument cabinet

Universal test platform

Tester
Indicator
Moving table
Controller
Software
Computer
Fixture
Test modules

Static detection test method and judgment standard

Detection contentTest methodTest valueRemarks
VDCMultimeter test voltage45V~50VVDC
 VCC Multimeter test voltage 15V~17.5V Vcc
VREGMultimeter test voltage4.5V~5.5VIC Pin7
 VSP Multimeter test voltage 6.2V~6.5V IC Pin6
REVMultimeter test voltage≤1VIC Pin17
FGSMultimeter test voltage4V~5.5VIC Pin18

No-load dynamic detection FG waveform and hall UVW waveform

Through software control, the open-loop power board is connected to the power supply, and after the voltage is raised to the rated voltage, the motor is adjusted to 1450 rpm for testing (the speed has been fixed before leaving the factory, so the test does not need to be adjusted), and the FG waveform and the Hall UVW waveform are detected by EYSIGHT DSOX2014A oscilloscope, and the results should meet the requirements in the table.


Dynamic detection standard

Detection contentTest methodTest valueRemarks
 FG(Blue terminal)Oscilloscope test waveformOscilloscope test waveform FG output 280~300Hz
  Hall (UVW)  Oscilloscope test waveform  Oscilloscope test waveformIPM Three-phase output U,V,W 15500~ 17500HZ, U amplitude50~53

Scheme characteristics

■ The test system is a multi-user management authority, and users and passwords can be customized.

■ The test program can be edited quickly according to the product test requirements.

■ The name of the test program can be customized and edited according to the product.

■ The software can set the functions of manual code scanning, automatic code scanning and bar code closing.

■ Test data can be uploaded to MES system and local data can be saved in CSV format.

■ There are three test modes: one-step test, test NG stop and NG print.

■ When the software is opened, it has the self-checking function of equipment and instrument communication.

■ There are statistical functions of test data in the software, such as quantity, first pass yield, time and so on.

Equipment Real Shot

PTI-300 Automatic Test Equipment

PTI-300 Automatic Test Equipment

Universal test platform with support for customizationMore
Test Fixture

Test Fixture

Customized according to PCBAMore
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