Siemens SINAMICS S150 NEMA Operating Instructions Manual page 105

4.8.2.4 Terminal descriptions
X520: 4 digital inputs
Table 4- 20
Max. connectable cross-section:
- Standard version: #16 AWG (1.5 mm²)
- Version with option G65: #14 AWG (2.5 mm²)
DI: Digital input; M1: Ground reference; M: Electronics ground
1)
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 through one of the following measures:
1. Provision of the ground reference of the digital inputs.
2. A jumper to terminal M. (Note: This removes the electrical isolation for these digital
inputs.)
Converter cabinet units
Operating Instructions, 11/2017, A5E36652151A
Terminal block X520
Terminal Designation
1 DI 0
2 DI 1
3 DI 2
4 DI 3
5 M1
6 M
Technical specifications
1)
Voltage: - 3 ... +30 V
Current consumption typical: 10 mA at 24 V DC
Input delay:
For "0" to "1": typ. 50 µs, max. 100 µs
For "1" to "0": typ. 130 µs, max. 150 µs
Electrical isolation:
Reference potential is terminal M1
Signal level (including ripple)
High level: 15 ... 30 V
Low-level: -3 ... +5 V
Electrical installation
4.8 Signal connections
103