Siemens ET 757 E Series Instructions d'exploitation Page 31

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Description
2.4 Overview of the LEDs
ET 200pro FC
Operating Instructions, 11/2007, A5E01100763B AA
31
Description of the LEDs
LEDs Description
System failure (SF) The "System failure" LED indicates a general system error in either
the software or hardware.
Ready (RY) The Ready LED indicates whether the converter is ready; a control
word is sent for this purpose. It does not show whether the drive is
running or not.
Final state (FS) The "Final state" LED shows whether the final state of a safety
function that has been triggered has been reached.
Safe torque off (STO) The STO LED indicates the safety function "Safe Torque Off".
Safe Stop 1 (SS1) The SS1 LED indicates the safety function "Safe Stop 1".
Safely Limited Speed (SLS) The SLS LED indicates the safety function "Safely Limited Speed".
You can find safety function information in the Function Manual.
See also
Diagnostics through LEDs (Page 140)
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