Siemens SIMATIC ET 200SP Manual page 20

BaseUnits for I/O modules
3.2 BU15-P16+A0+2D (BU type A0)
Properties
● BaseUnit suitable for all I/O modules of the BaseUnit type "A0/A1". Can be recognized by
the last two digits of the article number.
– Supply voltage (L+ terminal, ground): Max. 24 VDC/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)
● Connection method using push-in terminals
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 from the sum of 1 and 2 may not exceed 10 A.
20
BaseUnits (6ES7193-6BP.../3RK1908-0AP00...)
Manual, 12/2016, A5E03727049-AG