Appendix J
Start Options
The Sprint LC has options that modify the way it accepts the start input.
These options are useful for integrating the Sprint LC with fixtures that
seal on the test part. The start options are mutually exclusive. Only one
option, (or the “standard” START switch method), can be selected at a
time. The start option is installed at the factory and can not be changed by
the user.
Fixture Lid Start
With this option the START switch is disabled. The Sprint LC will only
start a test cycle with the foot switch input. The foot switch input is
connected to a limit switch on the protective cover or lid of a test fixture.
When the lid is closed the switch makes contact and starts the test. The
protective cover keeps fixture movements away from the operator. The
switch must remain closed through the entire test sequence.
If contact is broken then the test cycle will abort. To start a new test the
contact must be broken and then closed again.
Interlock Start
This option is similar to the fixture lid start. The foot switch input is again
connected to a limit switch on a protective cover. In this configuration the
switch must still maintain contact throughout the test. But it does not start
the test sequence. After closing the lid the operator must still press the
START switch to initiate a test. This feature is used when some user
action needs to take place after the lid is closed but before the test cycle is
started.
If contact is broken during the test then the cycle will abort. To start a new
test the contact must be broken, closed again and the START switch
pressed.
Appendix 27
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