Siemens 7SC80 Manual page 597

!
WARNING
Warning of dangers evolving from the improper operation
Non-observance of the following measure will result in error.
The power supply on the extension board mustn't be switched on later than the one on the main
²
board. Otherwise the error 10080 Error Ext I/O will occur and the device needs to be rebooted.
Therefore, it is recommended connecting both power supplies in parallel.
7SC8034* and 7SC8036*
[kl-uebers-7sc80-6_new, 1, en_US]
Figure B-6
SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017
B.1 7SC80 — Housing for cabinet flush mounting and cabinet surface mounting
Overview Diagram 7SC8034* and 7SC8036*
Terminal Assignments
597