Siemens NCU 7x0.3 PN Series - Page 108

Connectable components
9.2 PP 72/48D PN
NCU 7x0.3 PN
108 Manual, 09/2011, 6FC5397-1EP40-0BA0
Digital inputs
● Characteristics:
– X222: Inputs 3.0 to 3.7 are connected as rapid inputs; this means the input filter has a
max. delay time of 600 μs.
– The inputs have no signaling (status LEDs).
– The inputs are not isolated.
– It is not possible to connect 2-wire BEROs.
● Terminal assignment for the digital inputs:
The following figure shows an example of the terminal assignment for the digital inputs on
connector X111. Connectors X222 and X333 are assigned analogously.





3LQQXPEHU
5HFHLYHU
([WSRZHUVXSSO\
3287H[W VWDELOL]HG
5HFHLYHU
5HFHLYHU
33'31


;;;




3287
9'&
0

9
9



① when using the internal power supply P24OUT
② when using an external power supply P24OUT
ext
Figure 9-11 Terminal assignment for the digital inputs
● Internal power supply (P24OUT):
The internal power supply for the digital inputs (X111, X222, X333: Pin 2) is derived from
the general power supply of module X1, pin 2 (P24).