EN UG-020 Link 6 user guide r1.0 35
Label Purpose
0V_OUT 0V output of the internal I/O power supply.
Use only to jump with the terminal 0V_IN.
If an external power supply is used to connect on the 0V_IN
terminal, leave the terminal unconnected.
There are specific times when you can use the external power supply for general purpose I/Os.
• The total output current of the I/O panel exceeds 2 A.
• The general purpose I/Os must be supplied from the same power supply as the rest of the
industry floor.
• The general purpose I/Os are tied to an external reference point, with up to 2000 V electrical
isolation from the rest of the controller.
Figure 30: Internal power supply terminal
connections
Figure 31: External power supply terminal
connections
General-purpose digital inputs
There are no common points between channels. Each input has its own associated 24 V wetting
port.
The panel may not work properly when there is a miswired condition coming from any other
location on the panel; this type of miswired condition does not lead to any permanent damage.
When the miswired condition is fixed, the panel starts working.
Important: The panel may be damaged if the miswiring comes from an external device.
Important: Miswiring issues does not apply to the 24 V power supply output.
There are isolation potentials between a channel and other circuits, including earth, as well as
between channels under normal operation.
There is no hardware state indicator for general-purpose digital points.
There are side effects when you withdraw or insert an input module that is under power.
There is an additional external load when interconnecting inputs and outputs.
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