IndraControl L40 Connections and Interfaces 7-11
DOK-CONTRL-IC*L40*****-PR02-EN-P
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. 7-17: Light-emitting diode D
WARNING
Assembly destruction
If connected improperly, the assembly might be
destroyed. For that reason, avoid:
⇒
Reverse voltage with simultaneous short-circuit of
the output lines
⇒
Reverse voltage 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.
7.4 Interfaces
Serial RS232 Interface
A serial RS232 interface is provided at X3C.
D-Sub male connector, 9-pin
Type: RS232
Cable length: Max. 15 m
Cable type: Shielded, twisted
X3C
Shield applied to the metal housing
of the plug-in connector
1
5
69
3
4
5
6
7
8
9
2
1
DCD
RTS
DSR
GND
DTR
TXD
RXD
CTS
Com_sst.cdr
Fig. 7-18: RS232 interface
X3C
Serial RS232 Interface
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