[Dsg-hallb_magnets] Hall B - PLC redundancy

[Pablo Campero Rojas]

Hello Ruben,


Redundancy PLC system  for ControlLogix PLCs involve basically two controllers, two redundancy modules, and two Ethernet modules. This configuration allows to the PLC system running continuously in case one of the PLC controllers fails.


There is not a redundancy capability for both magnet; actual setup for Solenoid and Torus PLCs  have one PLC controller in the Local chassis, and only I/O modules in the Remote chassis. DBX PLC only has one PLC chassis with one controller.


Therefore, in case of a redundant system implantation for Solenoid and Torus magnets, it would be required: Acquisition of new PLC hardware, finding room for location of new PLC chassis (Not available in actual control racks), and PLC re-configurations.


Best Regards,

Pablo

________________________________
From: Ruben Fair
Sent: Tuesday, February 26, 2019 9:11:07 AM
To: Brian Eng; Nicholas Sandoval; Tyler Lemon; Pablo Campero Rojas
Cc: Probir Ghoshal
Subject: Hall B - PLC redundancy


Hi guys,


Dave was talking to Steve Lassiter in Hall C and apparently they use redundant PLCs there - not exactly sure what this means - do you?


Don't we use a remote and local PLC set up - does that give us any redundancy capability - to avoid the failure seen on Monday?


Steve also mentioned that if the PLC divides by zero, it crashes - could this have happened to us from the evidence (if any) that we obtained after the failure?


Regards


Ruben


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