Lenz Digital Plus LK200 Mode D'emploi page 27

5 Operating display
Two LEDs indicate the operating status of the LK200.
If the yellow LED is on, the output terminals "J" and "K" have the same polarity as the input
terminals "J" and "K".
If the green LED is on, the output terminals "J" and "K" have the reverse polarity as the input
terminals "J" and "K".
If neither of the two LEDs is on, no track voltage is applied at input J, K.
yellow LED is on
connected to
IN
J
K
green LED is on
connected to
IN
J
K
OUT
J
K
OUT
J
K
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E