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Input & Output
The I/O connector is typically used to connect Sprint LC to a
programmable logic controller (PLC) or other automation equipment. The
remote start signal tells Sprint LC to begin a test. Sprint LC has internal
contacts that can be used to tell an external device that the test passed or
failed, or that the test is completed. The following I/O example is for a
single channel or sequential Sprint LC. See also page A11
Input
Sprint LC accepts a 24-volt DC input to begin a test. The 24-volts energize
a coil to close contacts that begin the tests or test series. Remote start
performs the same action as pressing the START switch on the front of the
test. Figure 36.
It is not recommended to use the foot switch input to start a test from an
external relay or PLC. The foot switch input is not isolated.
Output
Three conditions can be sensed and are available as dry contact (no
voltage) outputs. The contacts are rated for DC only. The constant current
capacity of each contact is 1.5 amps. The switching load must not exceed
10VA. (0.5 amp @ 100 VDC)
Three output conditions—
Pass (The product was accepted as good)
Fail (The product was rejected as bad)
Test Over (Test complete, Pass/Fail output is valid.)
I/O Pinout
Pins 6 & 7 = Pass
Pins 8 & 9 = Fail
Pin 20 = Supply for 24 volt start signal input
Pin 21 = Ground for 24 volt start signal input
Pins 24 & 25 = Test Over
Optional I/O: The I/O feature is an optional item. The
connector is always present but the rest of the hardware
is only installed when it is purchased.
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