It happened again this evening when Sheila restarted the Beckhoff at 1077078129. HAM2 and HAM3 ISI actuactors tripped because of a spike in the act signal, as well as the HEPI. cf attached plots
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sheila.dwyer@LIGO.ORG - 12:49, Sunday 23 February 2014 (10272)
Stoping and restarting the EPICs database doesn't unlock the IMC.
Stoping PLC2 does unlok the IMC (and FSS) , although in the three times I tried it it didn't trip any HAMs today. Restarting the other PLCs doesn't cause any problems, and it doesn't matter wether or not the Guardian is running.
It happened again this evening when Sheila restarted the Beckhoff at 1077078129. HAM2 and HAM3 ISI actuactors tripped because of a spike in the act signal, as well as the HEPI. cf attached plots
Jamie and I tried this a few more times..
Stoping and restarting the EPICs database doesn't unlock the IMC.
Stoping PLC2 does unlok the IMC (and FSS) , although in the three times I tried it it didn't trip any HAMs today. Restarting the other PLCs doesn't cause any problems, and it doesn't matter wether or not the Guardian is running.