Entry type: FAQ Entry ID: 109780013, Entry date: 05/12/2020
SINAMICS: Information on error loop impedance according to IEC 60204-1
The inverters include electronic short-circuit protection and thus meet the requirements for automatic shutdown in the event of an error.
No further measurements need to be made in the motor circuits. The loop impedance measurement is therefore only carried out on the mains side of the drive system.
In the case of a modular drive system, the measurement shall be carried out at the terminals of the first component "behind" the overcurrent protection device.
Requirements of IEC 60204-1
In Chapter 18.2, IEC 60204-1 lists the conditions to be checked for protection by an automatically shutting down the power supply. This test consists of two parts:
- Checking the continuity of the protective conductor circuits
- Checking the fault loop impedance and the suitability of the associated overcurrent protection device
According to Chapter 18.2.3, the error loop impedance can be calculated or measured.
Siemens provides the relevant information for its frequency inverters in article 103474993.
In order to protect technical infrastructures, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art IT security concept. Siemens’ products and solutions constitute one element of such a concept. For more information about cyber security, please visithttps://www.siemens.com/cybersecurity#Ouraspiration.
Feedback for the article with the entry ID 109780013
Personalization saves you typing! If you have already been registered, you can login directly. If you are not registered yet, you can inform and register yourself without obligation here (our service is free of charge).
Number of characters: 0 (max. 500)
Send copy of comment to sender. (login required)
Note: The feedback always relates to the current entry / product. Your message will be forwarded to our technical editors working in the Online Support. In a few days, you will receive a response if your feedback requires one. If we have no further questions, you will not hear from us.
Requests and feedback
What do you want to do?
- You have a technical question / problem: Ask the Technical Support
- You want to discuss in our forum and exchange experiences with other users
- You want to create CAx data for one or more products
- You would like to send us feedback on this Entry
Support to the statistics
With this function the IDs found are listed according to number (format .txt).
Topic pages for this entry