Siemens S5-155U System Manual page 498

Connector X1
Connector X2
System Manual
C79000-T8576-C199-03
Connector assignments of the 6ES5 955-3NA12 power supply unit
The terminals of the supply lines between the power supply unit and
the backplane are in an 8-way connector (subminiature, fitted with 8
high-current contacts, Series D to MIL-C24308).
M2 (0V)
1 2 3 4 5
The signal terminals of the power supply unit are in a 37-way
connector (plug connector, 37-way, Series D to MIL-C24308).
RESETA
DSI GEP
RESET
DS NAU HOLD
1 2 3 4 5 6 7 8
BASP BASPA IR UBATT
RESIN CPKL BAU RLSA
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
Connector Assignments
5V/10A
6 7 8
9 10 11 12 13 14 15 16 17 18 19
+15V
M2 (0V)
-15V
unas-
signed
24V/0,8A
10
10 - 11