Siemens SINUMERIK ONE NCU 1740 - Page 142

Digital inputs min. max. Nominal
Low-level voltage (U
L
) -3 V 5 V 0 V
Signal delay time T
PHL
0.5 ms 3 ms -
Signal delay time T
PHL
rapid inputs (X222: DI 3.0 to
3.7)
- - 600 μs
Digital outputs
• Characteristics
– No galvanic isolation.
– Protection against: Short-circuit, overtemperature, and loss of ground.
– Automatic disconnection in case of undervoltage.
• Terminal assignment for the digital outputs:
The following 󹪝gure shows an example of the terminal assignment for the digital outputs on
connector X111. Connectors X222 and X333 are assigned analogously.
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'ULYHU
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9
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:
:
:
:
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1 (M)
0
Figure 12-16 Terminal assignment for the digital outputs
NOTICE
Damage to the module
If the outputs are overloaded, the heat can melt the contacts.
Therefore, for a demand factor of 100%, a max. current of I
out
= 0.25 A at X111, X222, X333:
Pin 2, must not be exceeded.
• Technical data:
Connectable components
12.3 PP 72/48D PN 2/2A PN
NCU 1740
142 Equipment Manual, 10/2021, A5E51087503B AA