TRANSFORMER TESTS VOLTECH AT3600 USER MANUAL
PAGE 7.1.44. VPN 98 - 024 TESTS AND TEST CONDITIONS
1.25. OUT – OUTPUT TO USER PORT
WHERE USED
OUT is used where additional switching (other than performed by the nodes of the
AT) is required for parts of the test program.
The User Port on the tester has associated with it 6 ‘Relay Driver’ outputs. The OUT
test allows programming of the User Port relay driver outputs to perform additional
relay switching as part of the test program.
An example of this would be an application where a transformer has two separate
primary windings. An OUT test could be used to connect them in series, allowing
them to be tested as a single primary with twice the working voltage.
A second example is the switching of additional resistors mounted on the test fixture
allowing tests to be included in a program on a transformer with a loaded secondary
winding.
SPECIFYING TEST CONDITIONS
Relay Driver Outputs
Each of the relay driver outputs (numbered 0 – 5) is an open collector output which
can be set to On or Off as desired:
On = Connected to Gnd (0V)
Off = Open circuit (Floating)
Note:
The relay drivers are set as and when the tester encounters an OUT test. The
settings given will latch until another OUT test is encountered. Therefore if the
settings are required for one part of the test program only, 2 OUT tests will be
required, 1 to turn the appropriate relay drivers on and 1 to turn them back off.
12 Volt Supply Pin
The user port also provides a 12V output to supply the power to the relays on your
test fixture.
For more information see Chapter 8 – Specification.
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