X122: Digital Inputs/Outputs; Table 2-3 Terminal Block X122 - Siemens SINAMICS S120 Equipment Manual

Control Units
2.2 Control Unit 320 (CU320)
2.2.3.4

X122: Digital inputs/outputs

Table 2-3 Terminal block X122
Terminal
1
2
3
4
5
6
7
8
9
10
11
12
Max. connectable cross-section: 0.5 mm
Type: Spring-loaded terminal 1 (see Appendix A)
1) DI: digital input; DI/DO: bidirectional digital input/output; M: electronic ground M1: ground reference
Note
An open input is interpreted as "low".
The "fast inputs" can be used for position sensing.
To enable digital inputs (DI) 0 to 3 to function, terminal M1 must be connected. This can be
done as follows:
Connect the ground reference of the digital inputs, or
a jumper to terminal M (Notice: this removes isolation for these digital inputs).
Note
If a momentary interruption in the voltage occurs in the 24 V supply, the digital outputs will
be deactivated until the interruption has been rectified.
2-8
Name
1)
DI 0
DI 1
DI 2
DI 3
M1
M
DI/DO 8
DI/DO 9
M
DI/DO 10
DI/DO 11
M
2
Technical specifications
Voltage: -3 V to 30 V
Typical current consumption: 10 mA at 24 V DC
Isolation: The reference potential is terminal M1
Level (incl. ripple)
High level: 15 V to 30 V
Low level: -3 V to 5 V
Signal propagation times:
L → H approx. 50 μs
H → L: approx. 100 µs
As input:
Voltage: -3 V to 30 V
Typical current consumption: 10 mA at 24 V DC
Level (incl. ripple)
High level: 15 V to 30 V
Low level: -3 V to 5 V
Terminal numbers 8, 10, and 11 are "fast inputs"
Signal propagation times for inputs/"fast inputs":
L → H: approx. 50 μs/5 μs
H → L: approx. 100 µs/50 µs
As output:
Voltage: 24 V DC
Max. load current per output: 500 mA
Continued-short-circuit-proof
Equipment Manual Control Units and Additional System Components
Equipment Manual, (GH1), 12/2004 Edition, 6SL3097-2AH00-0BP1