Reports until 15:37, Tuesday 08 March 2016
LHO VE (FMP, SYS, VE)
richard.mccarthy@LIGO.ORG - posted 15:37, Tuesday 08 March 2016 (25938)
Installed New Vacuum control system at EX
Per workpermit 5758 installed the new Beckhoff based vacuum control chassis and computer.  There were a couple of hardware issues.  First was the polarity of the 4-20ma inputs.  One set of 4 for the fan vibration monitors were fine but we had to swap the 3 for vacuum LN2 gauges.  Also plugged the Watchdog shorting connector in backwards which prevented the LN2 control valve from operating.  Once we fixed those issues the hardware and Beckhoff software worked fine.  The next problem was the gateway computer.  Some files needed to be modified to allow the channels to pass. I will let other comment on this.

For now the system is running and screens are being modified so the users will not see much difference.