Alge S4 finish lights do not trip – caused by high frequency electric noise from chai

cmakinsonMember

The chair lift generates a high frequency electrical noise that prevents the finish lights from tripping.
We experienced this problem when wiring for the start was run down the chair lift. That problem was solved by routing the wiring away from the chair. Then we experienced it on the AC power line that we used to power the computer and printer that was connected to the Alge S4. If the laptop was run on battery power or the RS-232 data cable were disconnected the finish light would work.

The solution was to add an RS-232 optical isolator in line.

2/17/145:44 PM

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