[Dsg-hallb_magnets] Status of initial Load Cell test readout

[Amrit Yegneswaran]

thanks for the update pablo. 


From: "Pablo Campero" <campero at jlab.org> 
To: "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org> 
Sent: Thursday, June 29, 2017 2:14:56 PM 
Subject: [Dsg-hallb_magnets] Status of initial Load Cell test readout 

Hello Amrit, 

Eight load cell for the radial supports in the Solenoid were connected. 

Initially to measure the local readout load cells values was used hardware device FUTEK. Values can be found at logbook 3477481 . 
However the values read by our control systems (LV Chasiss, cRIO, PLC) are not the expected. 


Connections and wiring between Magnet and controls were checked and they seems to be correct. 

We believe that the issues could be in the readback voltage (sense) form the actual load cell sensor to the LV chassis. It needs further investigation. 

In order to solve this; the plan for this afternoon is use a load cell probe connected directly to the LV chassis, vary its values (vary the load on it) and verified readback values by comparing with the local measurements on the FUTEK device. 







Best Regards, 

Pablo 

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