Today the SOA of the West arm turned off. We went to the end building to turn it back on, and we didn't manage, it would turn off every time we asked more than 30mA of current. Camilla checked the temperature setpoint and we realized that it was double the reference value (10kohm). We set it back to the nominal value and we tried to turn it on. It worked. However less than one hour later it turned off again, so we went there to replace it.

Since we started having problems after the power shutdown of the west end building, we replaced both the fibered part and the driver. We put the same setpoint for temperature and current as before, see Figures 1 and 2. The flags will be adjusted after some time has passed and the system has settled down.