IndraControl L40 Connections and Interfaces 7-11
DOK-CONTRL-IC*L40*****-PR03-EN-P
Light-emitting diodes indicating the current status of the outputs are
arranged above the output terminals.
LEDs 1, 2, 3, 4 Meaning
Off The assigned output is not set.
Yellow The assigned output is set.
Fig. 7-17: Status LEDs of digital outputs
An additional two-color light-emitting diode (identified by D) emits green
light in case the 24 V voltage is present and red light in case of a short-
circuit or overload.
Light-emitting diode D Meaning
Off 24 V voltage is missing.
Green 24 V voltage is present.
Red Short-circuit or overload.
Fig. 7-18: Light-emitting diode D
WARNING
Assembly destruction
If connected improperly, the assembly might be
destroyed. For that reason, avoid:
⇒
Polarity reversal with simultaneous short-circuit of
the output lines
⇒
Polarity reversal with simultaneous connection of
externally polarized suppressor diodes
⇒
Applying an external voltage > UB
The 0 V reference voltage of the connected loads must be returned to the
0 V terminal of the IndraControl L40, i. e. a two-pin connection must be
ensured. Otherwise, there will be no reliable protection from GND
breakage.
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