MORFEO is a post-focal adaptive optics module that forms part of the first light instrument suite for the Extreme Large Telescope (ELT). The project is now in the Final Design Phase. In this paper, we report the status of the project.
The Multiconjugate adaptive Optics Relay for ELT Observations (MORFEO), and adaptive optics module being developed for the ESO Extremely Large Telescope, has officially entered the Final Design phase. The control electronics functions, power and network distribution, system management and monitoring are all part of the MORFEO Instrument Control Hardware. It is based on industrial COTS components, and most of its functions are managed through the use of a PLC-based architecture. The EtherCAT protocol also allows great flexibility in the choice of the PLC modules topology. This proves especially useful for MORFEO, as its control electronics cabinets are distributed in different locations, due to the limited space available on the Nasmyth Platform. The industrial elements also present many additional advantages: among them, a quick update of the components during the life of the telescope, useful support from the providers in their implementation, easy procurement of spare parts, and a more accurate reliability analysis of the whole system. This paper describes the current, up-to-date design of the Instrument Control Hardware and the general ruels developed for the design of each MORFEO subsystems control electronics, in order to optimize the architecture while in compliance with ESO requirements. Finally, an overview of the expected steps that will be taken to bring all aspects of the overall design to a Final Design maturity level is given.
MORFEO (formerly known as MAORY) is a post-focal adaptive optics module that forms part of the first light instrument suite for the Extreme Large Telescope (ELT). The project passed the Preliminary Design Review in two stages in April and July 2021 and is now entering the Final Design Phase. In this paper we report the status of the project.
This paper provides a description of the Instrument Control Hardware design for MORFEO (Multiconjugate adaptive Optics Relay For ELT Observations), an adaptive optics module for ESO ELT. The MORFEO Instrument Control Hardware is in charge of the control electronics of the entire system. The architecture of the control system is thus based on the paradigm of decentralized functions, connected via EtherCAT fieldbus, allowing for easy communication between components that are not physically near each other. The use of industrial standards and COTS elements also leads to rapid development, easier update of the components, lower cost for spare parts and a widespread understanding of architecture among specialized firms. The Instrument Control Hardware design described in this paper is an updated version of the configuration presented for the Preliminary Design Review in the first half of 2021.
This paper provides a description of the Instrument Control Hardware design for MAORY (Multi-conjugate Adaptive Optics RelaY), a first light instrument for ESO ELT. The MAORY Instrument Control Hardware is in charge of the control electronics of the entire system. It comprises all the implemented electronic devices (power supplies, PLC CPUs and terminals, motor drivers, control panel, network switches, sensors) and the harness used to connect them. The instrument control system architecture is based on the use of PLC and EtherCAT fieldbus protocol, which allows for a distribution of PLC terminals controlled by the same CPU that do not have to be physically located in the same place to communicate among each other.
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