Digital Inputs/Outputs - Siemens SINAMICS S120 Function Manual

12.5.2

Digital inputs/outputs

Digital inputs
Figure 12-9
Properties
● The digital inputs are "high active".
● An open input is interpreted as "low".
● Fixed debouncing setting
● Availability of the input signal for further interconnection
● Simulation mode settable and parameterizable.
● CU320: Isolation block by block, set by jumper.
● Sampling time for digital inputs/outputs adjustable on CU320 (p0799)
Function diagrams (see SINAMICS S List Manual)
● 2020 Digital inputs, electrically isolated (DI 0 ... DI 3)
● 2120 Digital inputs, electrically isolated (DI 0 ... DI 3)
● 2121 Digital inputs, electrically isolated (DI 4 ... DI 7)
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
Digital inputs: signal processing using DI 0 of CU320 as an example
Delay time = 1 to 2 current controller cycles (p0115[0])
– inverted and not inverted as a binector output
– as a connector output
– Jumper open: electrically isolated.
The digital inputs function only if a reference ground is connected.
– Jumper closed, non-floating.
The reference potential of the digital inputs is the ground of the Control Unit.
Basic information about the drive system
12.5 Inputs/outputs
485