Siemens SIMATIC ET 200SP Manual page 30

Wiring
3.1 Terminal assignment and power supply
Information regarding selection of a suitable BaseUnit can be found in the ET 200SP
Distributed I/O System System Manual
(http://support.automation.siemens.com/WW/view/en/58649293) and in the ET 200SP
BaseUnits Manual (http://support.automation.siemens.com/WW/view/en/58532597/133300).
Pin assignment of the BaseUnit BU type B1
The table shows the pin assignment of the BaseUnit BU20-P12+A0+4B (6ES7193-6BP20-
0BB1). The power supply of this BaseUnit is not looped through, which means downstream
BaseUnits are not supplied by this BaseUnit. The same downstream BU requires its own
power supply. This means the BaseUnit is its own potential group.
The BaseUnit BU type B1 must be supplied with safety extra-low voltage (SELV) or
protective extra-low voltage (PELV).
All 24 V nominal power supplies of the I/O circuits must only be powered by approved
sources that fulfill the requirements according to EN61010-2-201 for SELV, PELV, Class 2,
voltage limited and/or power limited sources.
Designation
DQ for TRIP line
DQ for PP
Control Pilot
Plug Present signal
Not used
Not used
External 24 V DC power supply
input
Pins 13 and 15 are connected
internally.
28
I/O name View
DQ T 1
DQ P 3
CP 5
PP 7
- 9
- 11
L+ 13
15
I/O name Designation
2 - Not used
4 - Not used
6 - Not used
8 - Reserved
10 - Not used
12 - Not used
14 FE FE and ground for supply volt-
age
16 M Pins 14 and 16 are connected
internally.
Technology module TM ECC PL ST (6FE1242-6TM20-0BB1)
Manual, 07/2019, A5E43919893B-AA