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14 January 2021, SmartScanIS User’s Guide for Union Pacific, EUD-2016026-00 Rev.2
4.6.4.3 Status LEDs
There are three
power-status
LEDs.
The table below describes what each lit LED means.
LED
Meaning When Lit
12VDC
12 VDC is present on Scanner Interface board.
24VDC
24 VDC is present on Scanner Interface board.
117VAC
120 VAC is present on Scanner Interface board.
There are four
heater-status
LEDs. The table below describes what each lit LED means.
LED
Meaning When Lit
H-1
Power is applied to activate heater on N/E bearing scanner.
H-2
Power is applied to activate heater on S/W bearing scanner.
H-3
Power is applied to activate heater on N/E wheel scanner.
H-4
Power is applied to activate heater on S/W wheel scanner.
There are four
shutter-status
LEDs. The table below describes what each lit LED means.
LED
Meaning When Lit
S-1
Power is applied to open shutter on N/E bearing scanner.
S-2
Power is applied to open shutter on S/W bearing scanner.
S-3
Power is applied to open shutter on n N/E wheel scanner.
S-4
Power is applied to open shutter on S/W wheel scanner.
24 VDC
117 VAC
12 VDC
24 VDC
117 VAC
12 VDC
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