Siemens SINAMICS S120 Manual page 55

Terminal
Type: Spring-loaded terminal 3 (Page 320)
DI: digital input; DI/DO: bidirectional digital input/output; M: electronics ground; M1: reference potential
1)
The rapid inputs can be used as probe inputs or as inputs for the external zero mark.
2)
Data for: V = 24 V; load 48 Ω; high ("1") = 90% V
3)
cc
The maximum cable length that can be connected is 30 m.
Note
Ensuring the function of digital inputs
An open input is interpreted as "low".
Terminal M1 must be connected so that the digital inputs (DI) can function.
This is achieved by using one of the following measures:
1. Providing the ground reference of the digital inputs
2. A jumper to terminal M
Note: This removes isolation for these digital inputs.
Note
If the 24 V supply is briefly interrupted, then the digital outputs are deactivated during this time.
Control Units and additional system components
Equipment Manual, 06/2020, 6SL3097-5AH00-0BP2
Designation
1)
; low ("0") = 10% V
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Control Units and operating elements
4.3 Control Unit CU320-2 PN (PROFINET)
Technical data
Switching frequency
for ohmic load: Max. 100 Hz
For inductive load: Max. 0.5 Hz
For lamp load: max. 10 Hz
Lamp load: max. 5 W
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