6.3 Execute Mode
This is the normal operating mode of the AT3600 when used for production testing of transformers.
Before you try to use the tester in EXECUTE MODE, make sure that all the following have been carried out:
- Test programs have been created for the transformers you wish to test.
The programs are archived in the server, which is connected to the tester and running, and the tester has been set up to use the Server as the Program Store,
The programs have been downloaded into the tester, which has been set up to use its internal memory as the Program Store.
For a reminder of how to set up the tester for operation with a LOCAL or PROGRAM store, see chapter 2, section 2.3.3 of the quick start tutorial.
- Fixtures have been created for the transformers you wish to test.
Note: If you have a foot switch fitted to the remote port on the tester, usually in EXECUTE Mode, pressing it will take the same action as pressing the upper soft key
For text entry (such as the name of the program, or the serial number of the transformer under test), you may optionally use a bar-code reader connected to the tester's rear panel Bar-Code Port.
6.3.1 Execute Mode With No Options Enabled
For simple test programs (where none of the following options are enabled: Batch Number, Operator Number or Serial Number), the following flow diagram summarises EXECUTE MODE operation:
At the top-level display, press EXECUTE.
The program name can now be typed at the keyboard, entered by swiping a barcode or chosen from a list. Press the soft-key LIST to see a list of the programs available on the PC server or in the AT3600’s own memory (see section 6.6.2)
Use the ↑ and ↓ keys to select the program and press the enter key  or the enter soft-key.
UNIVERSAL is the name given as the ‘Fixture ID’ in the Editor software ‘Program options’ dialogue (see Chapter 3).
Press COMPENSATE or NO COMP as required.
Note: For fixture compensation, connect a short circuit in place of each winding of the transformer under test.
If the FAIL indicator illuminates at this point this indicates a problem with the compensation procedure, check the fixture and short-circuit header connection, then re-try the fixture compensation.
Illumination of the PASS indicator represents a successful compensation. Remove the short circuit links and continue.
Place the component to be tested in the fixture and press the RUN soft-key, or the footswitch.
After the measurement, remove the component and place it in the ‘Pass’ or ‘Fail’ bin as appropriate.
Continue in this way until each component in the batch has been tested, then press FINISH.
ERROR MESSAGES WHEN ENTERING THE PART NUMBER
a) Server program store (see section 6.2 in this chapter)
Faulty Cable: The cable from the AT server port to the server PC has a broken wire, or is not plugged in correctly.
COM-Port: The COM Port has not been set up in the server application.
Server not running: Either the server PC is not powered on, or the server application is not running.
The directory set-up in the server application as the location of test programs
does not contain a test program file with the requested part name.
b) Local program store (see chapter 2, section 2.3.4)
The requested part number is not resident in the group of programs that have been downloaded into the AT.
At all the above displays, pressing the CONTINUE soft key will take you back to the top level display.
INDICATIONS DISPLAYED WHILE TESTS ARE RUNNING
Where 1 represents the position of the test within the test program.
The operator may terminate the measurements at any time by pressing the STOP soft-key. Alternatively, you may use the STOP input signal on the tester’s remote port, which may be connected, for example, to an emergency stop switch.
As the measurements proceed, the test number will be incremented, and for the Hi-Pot and Stress Watts tests, the measured test voltage will also be displayed on the lower line.
The RUN-FINISH displays seen after a previous component has been tested.
Both the front panel LED’s (green = ‘Pass’ and red = ‘Fail’) and output lines of the remote port indicate the test result of the previous transformer, so that it may be placed in the appropriate ‘Pass’ or ‘Fail’ bin.
If enabled, the appropriate test result is now sent back to the Server, and all previous test results may be reviewed on the results listing screen, which is accessible directly on the front panel via the RESULTS soft-key (see below).
The RUN-FINISH display seen after measurement of the previous component was halted using the STOP soft-key, or the STOP input of the remote port.
At this display, all LED’s will be off, and no results will be reported back to the server.
RE-MEASURING THE FIXTURE COMPENSATION
If you think that fixture compensation needs to be re-measured at any time, at the RUN-FINISH display, press the ‘SEETINGS’ soft-key to reveal:
Press COMPENSATE to repeat the fixture compensation measurements, or ‘Back’ to return to the RUN-FINISH display without re-compensating.