The output to the SLS Discrete Input channels can be proof tested. A circuit that does not open when the switch is toggled indicates a stuck contact. If this occurs, replace the Voltage Monitor.
Measure the voltage at SLS Discrete Input channel one (screw terminals 9 and 10). The voltage should be about 7 VDC.
Slide the switch labeled CHAN 1 to the Test A position and then measure the voltage at SLS Discrete Input channel one (screw terminals 9 and 10). The voltage should increase to about 11 VDC.
Release the switch to its original position.
Slide the switch labeled CHAN 1 to the Test B position and then measure the voltage at SLS Discrete Input channel one (screw terminals 9 and 10). The voltage should increase to about 11 VDC.
Measure the voltage at SLS Discrete Input channel two (screw terminals 13 and 14). The voltage should be about 7 VDC.
Slide the switch labeled CHAN 2 to the Test A position and then measure the voltage at SLS Discrete Input channel one (screw terminals 13 and 14). The voltage should should increase to about 11 VDC.
Release the switch to its original position.
Slide the switch labeled CHAN 2 to the Test B position and then measure the voltage at SLS Discrete Input channel one (screw terminals 13 and 14). The voltage should should increase to about 11 VDC.