Siemens SIMATIC ET 200SP Manual page 40

Properties
● BaseUnit for all I/O modules of BaseUnit type "A1". Can be recognized by the laser
inscription on the front and/or the last two digits of the article number.
Note
Using another I/O module can trigger an internal, non-exchangeable fuse and you must
exchange the terminal box.
– Supply voltage (L+ terminal, ground): Max. 24 V DC/10 A
– Current-carrying capacity per process terminal (terminal 1 to 16): Max. 2 A
● The BaseUnit opens up a new potential group. The self-assembling voltage buses P1 and
P2, and the AUX busbar are interrupted to the left-hand neighboring module (BaseUnit,
interface module).
● No access to the AUX busbar via terminals
● 16 terminals to the process (assignment through the I/O module)
● 2x5 additional terminals for supplying a supply voltage up to 24 V DC/ 10 A. The
additional terminals are not connected to the I/O module.
● Recording of the terminal temperature for internal temperature compensation at
connected thermocouples
● Connection system in the form of push-in terminals Connection cross-sections are
available in the ET 200SP System Manual
(https://support.industry.siemens.com/cs/ww/de/view/58649293).
Maximum configuration per potential group
The number of I/O modules that can be used per potential group depends on the following
factors:
1. Total power requirement of all I/O modules operated on this potential group
2. Total power requirement of all loads connected externally to this potential group
The total current calculated according to item 1. and item 2. must not exceed 10 A.
BaseUnits (6ES7193-6BP.../3RK1908-0AP00...)
Manual, 02/2018, A5E03727049-AJ
4.6 BU type A1, light-colored version, with additional terminals
BaseUnits for I/O modules
39