Siemens 7SG11 Technical Manual page 81

Status inputs do not work.
Relay instrument displays show small voltages
even though the system is dead.
If the above checklist does not help in correcting the problem please contact your nearest Reyrolle
representative.
©2011 Siemens Protection Devices Limited
7SG11 Argus 8 Commissioning
•
Check that the correct DC voltage is applied and that
the polarity is correct.
•
Check that the status input settings such as the
Pick-up and Drop-off timers and the status inversion
function are correctly set.
•
This is normal. The relay is displaying calculation
noise. This will not affect any accuracy claims for the
relay.
Chapter 7 Page 10 of 12