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**17 Dec 2019:**
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**7 Jan 2020:**
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* We need to protect user from being electrocuted by accidentally touching **230V cables going to the front panel**. You will evaluate 2 solutions: 1) enclosing front panel in a "metal box" where 230V cables enter through a hole in the back and other than this, it is covered from all sides; 2) 2 metal plates separating slot 9 and PSU slot from the front panel area.
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- Addition of a metal plate protection of **230V cables for the RTMs**; check if it would disturb the External Power Supply cassette
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- Replace GND connection screw with **butterfly** type
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- Add to the crate design optional **roof and feet**
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- CPCI-serial backplane **power bags** touching the rail -> confirmed with Michal that he will move the power bags higher to ensure that with different crate manufactures there wont be a risk
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- Checked with Michal that the **font panel** will be a pcb screwed on the metal plate
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- **Rails** for power cards to be changed to green, as in off-the-shelf crate;
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It seems there are only red rails for RTMs
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- Parts to keep caables together will be added, either off-the-shelf or 3D printed
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- Creotech waiting for Schroff answer on painting options and 6HP RTM front-panel availability
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--->
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- CERN will provide a number on the allowed cable drop on 12V cables, 50A
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- CERN will provide **STEP models** of the front panels of the system and peripheral boards and model of the FMC-nanoFIP
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* We have a freedom of **placing the IEC power entry sockets in the back panel**, you will evaluate the most ergonomic way to ease routing of 230V cables inside the crate.
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--->
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- **Next** steps:
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* Creotech corrects the aforementioned issues
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* CERN reviews 3D model
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* In parallel Creotech purchases all the BOM; Anna and Erik will be in contact
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* After the 3D approval, Creotech writes the technical doc
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* Finally CERN reviews all the work-package output with the mechanical office
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- **Technical doc** to be provided will include:
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* BOM
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* technical drawings for all custom made parts
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* assembly manual
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* technical drawings; key views
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* Removing a power cable with **Schurter V-Lock** mechanism requires some space, you will add the model of the power plug to evaluate how IEC power entry sockets should be placed.
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- It is probable to be **compatible with other manufacturers**, but it would be a different analysis for Creotech to check for that; CERN could ask directly ELMA/ATOS for their equivalent BOMs and 3D models
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**17 Dec 2019:**
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* We need to protect user from being electrocuted by accidentally touching **230V cables going to the front panel**. You will evaluate 2 solutions: 1) enclosing front panel in a "metal box" where 230V cables enter through a hole in the back and other than this, it is covered from all sides; 2) 2 metal plates separating slot 9 and PSU slot from the front panel area.
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---> Finally 2 custom-made metal plates will be used, as they are easier to attach to the crate
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--->
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* We have a freedom of **placing the IEC power entry sockets in the back panel**, you will evaluate the most ergonomic way to ease routing of 230V cables inside the crate.
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Removing a power cable with **Schurter V-Lock** mechanism requires some space, you will add the model of the power plug to evaluate how IEC power entry sockets should be placed.
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---> Done; above 35 mm between the two V-locks
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* We can flip the way RTMs are mounted to have the **locking/ejecting handles on the bottom ** (like the front cards), but this will require swapping also the L-shaped metal parts at the sides of the crate to have all EMC gaskets in place.
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* We can flip the way RTMs are mounted to have the **locking/ejecting handles on the bottom ** (like the front cards), but this will require swapping also the L-shaped metal parts at the sides of the crate to have all EMC gaskets in place.
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NOTE: I checked the CompactPCI Serial standard. In section 3 (Mechanical Requirements) it defines how the rear boards should be placed. Please have a look at Figure 4 which shows that IEEE handle is placed at the bottom and both rear and front boards are in the same plane (there is no offset of the guiding rails).
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NOTE: I checked the CompactPCI Serial standard. In section 3 (Mechanical Requirements) it defines how the rear boards should be placed. Please have a look at Figure 4 which shows that IEEE handle is placed at the bottom and both rear and front boards are in the same plane (there is no offset of the guiding rails).
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--->
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---> mirror version of the front panels available at Schroff but not 6HP..
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to follow up with Schroff; the 3D drawing is not a component from Scroff
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* You got a reply from Schroff that they can provide **painted crate components** in both variants: conductive paint OR normal powder coating with some parts exposed (not painted). The plan is to finalize the design of the crate and then submit it to Schroff for price estimations for both variants.
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* You got a reply from Schroff that they can provide **painted crate components** in both variants: conductive paint OR normal powder coating with some parts exposed (not painted). The plan is to finalize the design of the crate and then submit it to Schroff for price estimations for both variants.
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--->
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---> no answer from Schroff yet
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* After placing step models of the backplane and cards, **the whole crate fits into the standard components of 355mm depth**.
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* After placing step models of the backplane and cards, **the whole crate fits into the standard components of 355mm depth**.
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---> Are there several providers, elma/atos?
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* For the assembly of the crate, there is a possibility of ordering **subrack components, or pre-assembled crate** from Schroff. In the latter case, one still needs to mount the backplanes and cabling. To be seen later, which option is cheaper.
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* For the assembly of the crate, there is a possibility of ordering **subrack components, or pre-assembled crate** from Schroff. In the latter case, one still needs to mount the backplanes and cabling. To be seen later, which option is cheaper.
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---> what about elma/atos?
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---> what about elma/atos?
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it is probable; will check into other manufacturers
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gut feeling: pretty simple project, would be easy to find
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tricky points: power bags touching the rail; with different manufactures it might not fit
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16-pin IDC connector on front panel -> could be
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different analysis to check if another vendor could
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* To increase the chances of receiving the final 3D model with cabling beginning of January, we agreed that you will prepare this full 3D model which we will review internally. **The paper documentation will follow once we approve the 3D model**.
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* To increase the chances of receiving the final 3D model with cabling beginning of January, we agreed that you will prepare this full 3D model which we will review internally. **The paper documentation will follow once we approve the 3D model**.
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