Siemens SINAMICS S120 Equipment Manual page 73

Bidirectional digital inputs/outputs X541
Table 3-19 Terminals for bidirectional digital inputs/outputs
Terminal
1
2
3
4
5
6
Max. connectable cross-section: 1.5 mm²
Type: Screw terminal 1 (see Appendix A)
1) DI/DO: Bidirectional digital input/output; M or GND: Electronic ground
Note
An open input is interpreted as "low".
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.
Notice
Terminals "+" and "M" must be used to power the bidirectional digital inputs/outputs on this
connector.
Equipment Manual for Control Units and Additional System Components
Equipment Manual, (GH1), 04.2004 Edition, 6SL3097-2AH00-0BP0
Name
1)
+
DI/DO 8
DI/DO 9
DI/DO 10
DI/DO 11
M (GND)
Additional System Components
3.3 Terminal Module 31 (TM31)
Technical specifications
As input:
Voltage: -3 V to 30 V
Typical current consumption: 10 mA at 24 V DC
Signal propagation times:
L → H: Approx. 50 μs
H → L: Approx. 100 µs
As output:
Voltage: 24 V DC
Max. load current per output: 100 mA
Max. total current of outputs: 400 mA
Continued-short-circuit-proof
3-23