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Cabinet design and EMC S120M
7.2 24 V DC supply voltage
NOTICE
Damage caused by incorrect installation of the Hybrid Cable and terminating connector
Incorrectly mounted Hybrid Cables or terminating connectors can cause damage or
malfunctions.
• After connection, the Hybrid Cable and the terminating connector must be additionally
• Observe the bending radii for Hybrid Cables
7.2
24 V DC supply voltage
7.2.1
General
The 24 VDC voltage is required for the power supply of
1. The electronics of the SINAMICS components via the integrated 24 V busbar
2. The electronics of the Control Units, Option Boards, Sensor Modules, and Terminal
Modules, as well as the process voltage of their digital inputs
3. The load voltage of the digital outputs
4. The motor holding brakes
Note
Electronic power supply
For information on the electronic power supply, see the chapter titled "System data" in this
documentation.
NOTICE
Damage caused by missing overvoltage protection circuits
Missing overvoltage protection circuits can cause equipment damage.
• When connecting other loads to the electronic power supply, fit connected inductance
116
tightened using the tool provided.
Tool: Allen key; tightening torque, 3.0 Nm
– Static: 60 mm
– Dynamic: 112.5 mm
≥7.5 • D (D = 14.6 ±0.4 mm)
devices (contactors, relays) with suitable overvoltage protection circuits.
SINAMICS S120M Distributed Drive Technology
Manual, (GH12), 12/2014, 6SL3097-4AW00-0BP3
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