X121 Digital Inputs/Outputs - Siemens SINAMICS S120 Equipment Manual

Control Units
6.2 Control Unit CU310 DP (PROFIBUS)
6.2.3.5

X121 digital inputs/outputs

Table 6-4 Terminal strip X121
Terminal
1
2
3
4
5
6
7
8
9
10
11
12
Max. cross-section that can be connected: 1.5 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
Notice
An open input is interpreted as "low".
The "fast inputs" can be used in conjunction with a measuring system 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 digital inputs' ground reference, or a jumper to terminal M. This removes the
electrical isolation for these digital inputs.
Note
An external 24 V power supply is required.
If a the 24 V power supply voltage is briefly interrupted, then the digital outputs are de-
activated during this time.
6-10
Designation
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
Manual, (GH6), 03/2006 Edition, 6SL3097-2AL00-0BP0
Equipment Manual AC Drive