Siemens SIMATIC PCS 7 CPU 410-5H System Manual page 26

Introduction to CPU 410-5H
2.3 The basic system of the CPU 410-5H for stand-alone operation
Power supply
You require a power supply module from the standard system range of the S7-400.
To increase availability of the power supply, you can also use two redundant power supplies.
In this case, you use the power supply modules PS 405 R / PS 407 R.
A combination of these can also be used in redundant configurations (PS 405 R with
PS 407 R).
Operation
The operation of a CPU 410-5H requires a system expansion card. The system expansion
card specifies the maximum number of process objects that can be loaded to the CPU and
saves the license information in case of a system expansion. The system expansion card
forms a hardware unit with the CPU 410-5H.
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CPU 410-5H Process Automation
System Manual, 09/2014, A5E31622160-AB