Cabinet Design And Electromagnetic Compatibility (Emc); Information On Control Cabinet Installation And Emc; Electromagnetic Fields In The Workplace; Overvoltage Protection For 24 V Cables - Siemens SINAMICS S120 Manual

Cabinet design and electromagnetic compatibility
(EMC)
10.1

Information on control cabinet installation and EMC

Information on control cabinet installation and electromagnetic compatibility (EMC), as well as
on overcurrent and overvoltage protection, can be found in the following references:
• Components in the booksize format:
Reference: SINAMICS S120 Manual for Booksize Power Units
• Components in the blocksize format:
Reference: SINAMICS S120 Manual for AC Drives
• Components in the chassis format:
Reference: SINAMICS S120 Manual for Chassis Power Units, Air-cooled
Reference: SINAMICS S120 Manual for Chassis Power Units, Liquid-cooled
• Requirements to implement EMC:
References: EMC Installation Guideline Configuration Manual / Basic system requirements
(Article number 6FC5297-0AD30-0.P.)
10.2

Electromagnetic fields in the workplace

The 24 V components, e.g. Control Units, Terminal Modules, Sensor Modules, Hub Modules and
Voltage Sensing Modules, do not emit any significant electromagnetic fields.
No minimum clearance has to be maintained for 24 V components.
10.3

Overvoltage protection for 24 V cables

Surge arresters are required for cable lengths > 30 m.
The following Dehn overvoltage protection elements are recommended for protecting the 24 V
power supply of the components and the 24 V signal cables against overvoltage:
Table 10-1
24 V power supply
Manufacturer: Dehn
Article: BVT AVD 24
Article number: 918422
Control Units and additional system components
Equipment Manual, 06/2020, 6SL3097-5AH00-0BP2
Recommendations for overvoltage protection
24 V signal cables
For digital inputs and outputs up to 0.1 A
Manufacturer: Dehn
Article: BXT ML4 BE C 24 and BSP BAS 4
Article numbers: 920364 and 926304
For digital inputs and outputs up to 0.5 A
Manufacturer: Dehn
Article: DCO SD2 ME 24 and DCO SD2 MD 24
Article numbers: 917921 and 917941
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