Siemens SINAMICS S220

4.10 24 V DC supply voltage
4.10.1 Selecting power supply
Overview
24 V DC is required to supply the following components:
• Electronics of the components via the integrated 24V busbar
• Electronics of the Control Units, Option Boards, Sensor Modules and Terminal Modules
• Digital outputs
• Holding brakes
Requirement
NOTICE
Damage to other loads as a result of overvoltage
Overvoltage of switched inductances (contactors, relays) can damage connected loads.
• Install suitable overvoltage protection circuits.
Description
Power supplies with safety extra-low voltage (SELV) or protective extra low voltage (PELV) must
be used to supply the components. In SINAMICS S220booksize components, the electronics
ground M is permanently connected to the protective conductor potential. This is the reason that
you must implement the circuit as PELV circuit.
Component Input voltage
Drive line-up 24V DC -15 / +20%, safety/protective extra-low voltage (SELV/PELV)
1)
1)
In the case of a fault, the power supply voltage must not exceed 60VDC (DVCA).
Application planning
4.1024 V DC supply voltage
Booksize power units
Equipment Manual, 09/2023, A5E53307519B AA 47