Siemens SIMATIC PANEL PC 877 - Manual (Page 114)

Functions
11.5 Fan monitoring
SIMATIC Panel PC 877
11-6
Operating instructions, Release 07/2006, A5E00877780-01
11.5
11.5
Fan monitoring
This function monitors operation of the housing and processor fans. When a fan fails, the
following reactions are triggered:
Response Option
SOM or DiagMonitor software is activated None
The temperature error is retained until the cause of the fan failure has been rectified and the
error is reset in one of the following ways:
•
Acknowledgement of the error message by means of the SOM program
• Restart of the device