Calculating Your Power Requirement - Siemens SIMATIC S7 System Manual

Calculating a power budget
B.3 Calculating your power requirement
B.3

Calculating your power requirement

Calculating your power requirement
Use the table below to determine how much power (or current) the CPU can provide for your
configuration. Refer to the technical specifications (Page 679) for the power budgets of your
CPU model and the power requirements of your digital modules, analog modules or signal
boards.
Table B- 2 Power budget
Power budget
System requirements
Total requirements
Current balance
Current balance total
790
5 V DC
minus
5 V DC
equals
5 V DC
24 V DC
24 V DC
24 V DC
System Manual, V2.3, 07/2017, A5E03822230-AF
S7-200 SMART