[Dsg-ft] Interlock status

[Amanda Hoebel]

Hi,

We have installed and tested the cRIO for the hardware interlocks. The following have been conducted:

1. Made cables for LV, humidity, calorimeter temperature, chiller pump, and gas flow.

2. Reprogrammed LV crate to enable interlocks for calorimeter and hodoscope LV.

3. Verified HV and LV interlocks with detector cables disconnected.

4. Connected gas flow meter and verified signal.

5. Reprogrammed chiller to accept interlocks.

6. Made and checked all controls in EPICS interface, including threshold and status monitors.

       a. Confirmed sensor enables are working.
       
       b. Checked values of signal monitoring.

       c. Verified interlock errors latched by system and checked reset function.

       d. Checked functionality of interlock status indicators for calorimeter temperature, humidity, HV, LV, and gas flow.

       e. Checked trip threshold values for calorimeter temperature, humidity sensors, and gas flow.

       f. Tested HV-LV trip delay.

       g. Verified system turn-off of chiller pump.

We also corrected the pin connections for the hodoscope LV interlocks and replaced the wires for the calorimeter LV interlocks. Each interlock uses two wires attached to pins 17 and 36 of the LV connector. 
The DSG will be installing the temperature sensors for the hodoscope. Please let us know the length of the cables required.

Regards,
Amanda