[Dsg-hallb_magnets] Hall B Solenoid PSU issues

[George Biallas]

Pablo, 
Just a thought, does the same problem exist on the Torus? 

| From: "Pablo Campero" <campero at jlab.org>
| To: "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org>
| Cc: "Sarin Philip" <philip at jlab.org>, "Mark Todd" <mtodd at jlab.org>
| Sent: Wednesday, April 26, 2017 9:04:40 AM
| Subject: Re: [Dsg-hallb_magnets] Hall B Solenoid PSU issues

| Hello Ruben,

| Yesterday afternoon the problem with the PSU was solved.

| The PSU remote crate display was showing an interlock, which was occurring
| because of their interlocks inputs were not activated. These inputs are
| provided from the relay outputs of the PLC.

| The following steps were followed to solve the problem:

| 1.Verify interlock hardwiring for the PSU crate board; used drawings
| B000000900-0639 and B000000900-0654.

| 2. Notice that PLC relay outputs that are wired to the interlock inputs of the
| PSU remote crate has to be always ‘ON’ to avoid the interlocks.

| 3. Added PLC code in ‘ Magnet Interlocks’ routine to have always active the
| relay outputs (Slot 1- Remote PLC chassis) and match with the wiring mention
| above.

| 4. Two PLC tags were added to the PLC routine: PLC_FAST_DUMP_BACKUP and
| PLC_SLOW_DUMP at channels 12 and 13 respectively.

| All changes in the Solenoid PLC were made Online, and latest version is running
| in the PLC controller.

| Best Regards

| Pablo Campero

| The following is a new meeting request:

| Subject: 	Hall B Solenoid PSU issues
| Organizer: 	"Ruben Fair" <rfair at jlab.org>

| Location: 	Hall B Level 2 - by solenoid PSU
| Time: 	Tuesday, April 25, 2017, 1:15:00 PM - 2:15:00 PM GMT -05:00 US/Canada
| Eastern

| Invitees: 	campero at jlab.org; mtodd at jlab.org; spiegel at jlab.org; philip at jlab.org;
| ghoshal at jlab.org
| *~*~*~*~*~*~*~*~*~*

| Pablo,

| We will need you there to possibly make changes to the PLC settings.

| Regards

| Ruben

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-- 
George 
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