Reports until 11:36, Tuesday 20 June 2023
H1 SEI (CDS, SEI)
patrick.thomas@LIGO.ORG - posted 11:36, Tuesday 20 June 2023 - last comment - 13:08, Tuesday 20 June 2023(70608)
end Y HEPI pump controller migrated to Beckhoff PLC 
Filiberto, Jim, Patrick

The end Y HEPI pump control has been migrated to Beckhoff PLC control. The PLC code is at commit 6f28513d7348758424e485d99c9ece5a79edb593 at https://git.ligo.org/cds/ifo/beckhoff/hepi-pump-ctrl/h1-hepi-pump-ctrl-ey.

It is currently running on PID control and maintaining ~ 70 psi differential pressure.
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filiberto.clara@LIGO.ORG - 13:08, Tuesday 20 June 2023 (70617)
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The following Beckhoff electronics were installed:

Mechanical Room

  1. CX2040 Beckhoff computer
  2. EL3602-0010 (QTY 2)
  3. EL3164
  4. EL4104
  5. EL1094
  6. EL9011 (bus end plate)

VEA

  1. EK1101
  2. EL3602-0010
  3. EL9011 (bus end plate)

A 12U open frame rack was mounted on the HEPI cage. The Beckhoff computer and terminals were mounted to the frame rack via a Din rail kit.

The EK1101 coupler and EL3602-0010 in the VEA were installed half rack between BSC10 and BSC6. Same rack that houses the BRS Heater Beckhoff modules.

The old HEPI Pump Servo Chassis in mechanical room and both HEPI Preamps (next to BSC10) were left installed and powered off. Old units will be removed after new system runs for a few weeks.

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