Siemens SIMOTION C 230-2 Operating Instructions Manual page 54

Interfaces
4.5 Onboard drive interface (C230-2, C240)
receivers or optical coupler inputs to enable symmetrical signal transmission. An asymmetrical
transmission is also possible, however, the maximum cable length in this case is limited to 10 m.
Note
Because of the wide range of non-standardized input circuits of the drive units during
asymmetrical transmission, no responsibility can be taken for this function. In particular, cable
lengths and the limit frequency depend on the properties of the input circuit and the cable being
used. In addition, the GND reference potential should be isolated to prevent electrical
interference.
All outputs are electronically protected against short-circuit and thermal overload.
The following figure shows different possibilities for protective signal circuits.
54
Operating Instructions, 11/2022, A5E33441428B
SIMOTION C