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Roland Reiss, Sebastian Deiries

The Millikelvin Challenge—Cryogenic Control with Industrial PLCs. Roland Reiss, Sebastian Deiries. Cryogenic Controller. Beckhoff Programmable Logic Control (PLC) EtherCAT field bus (100Mbit/s) 24 bit analog input modules 24V/4A PWM outputs Features Precision temperature measurement

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Roland Reiss, Sebastian Deiries

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  1. The Millikelvin Challenge—Cryogenic Control with Industrial PLCs Roland Reiss, Sebastian Deiries

  2. Cryogenic Controller • Beckhoff Programmable Logic Control (PLC) • EtherCAT field bus (100Mbit/s) • 24 bit analog input modules • 24V/4A PWM outputs • Features • Precision temperature measurement • Graphical User Interface • Sensors • PT100..PT1000 RTDs • LakeShore Cernox RTDs • LakeShore DT-670 Si diodes • Edwards WRG (vacuum)

  3. Graphical User Interface

  4. Cryogenic Controller

  5. Performance • Temperature resolution • PT100: 10mK • Cernox: <1mK (at 160K) • Temperature accuracy • Only limited by vendor calibration data • Control loop stability • ± 5mK pp

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