Siemens SIPROTEC 5 Series Hardware Description page 97

Terminal and Connection Diagram
NOTE
i
i
The polarities of the voltages at the binary inputs must not be reversed!
[cd_io231x, 2, en_US]
Figure 3-56
SIPROTEC 5, Hardware Description, Manual
C53000-G5040-C002-C, Edition 10.2017
IO231 – Terminal Diagram
3.2 Input and Output Modules of the Modular Devices
Electronic Modules
97