Siemens Industry Online Support
Siemens AG
Entry type: FAQ Entry ID: 109764299, Entry date: 02/18/2019

Relays switch much too often

  • Entry
  • Associated product(s)


Sporadically, the relays switch very frequently.



The problem can be solved via firmware update V02 to V03.



Only devices with firmware V02 can be updated. Please return devices with firmware V01. Devices with firmware version V03 or higher are not affected by this problem.

Security information
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 visit