1 / 11

Cabling, Interlocks, Racks

Cabling, Interlocks, Racks. Some remarks. Introduction. Re-iterate and update a few remarks from last workshop on interlocks and cabling Stefano will cover some rack related issues. Interlocks. This addresses only the hardwired interlocks

karik
Télécharger la présentation

Cabling, Interlocks, Racks

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Cabling, Interlocks, Racks Some remarks

  2. Introduction • Re-iterate and update a few remarks from last workshop on interlocks and cabling • Stefano will cover some rack related issues ALICE DCS Workshop

  3. Interlocks • This addresses only the hardwired interlocks • We received no more additional input from the detectors since last workshop • We discussed with the principal sources of hardwired interlock signals:cooling and gas systems ALICE DCS Workshop

  4. Interlocks [cooling] • Any serious malfunctioning that would justify an interlock will affect the whole plant • Therefore the TS/CV group has foreseen only a single interlock signal per cooling plant (=per detector) • Only SDD (as far as known to us) had foreseen to receive more interlocks • TS/CV was not aware of this • We will need to see what are their exact requirements ALICE DCS Workshop

  5. Interlocks [gas] • The gas system will provide a single hardwired signal per gas system (=per detector) • This signal will be a copy of a software status indicating if the gas system is working nominally • There will be no delays in the signal • Gas quality in the detector will only start to deteriorate after some time ALICE DCS Workshop

  6. Interlocks • If this does not suit you… • …It’s too late ! • … come with justification to re-discuss with TS/CV or Gas • Remaining issues: • Distribution of the signal to the equipment (mainly power supplies) • Implementation of delays (especially for gas) • Did any of you already worked on these issues? • Other (non gas or cooling) interlocks • E.g. PMD “detector position” interlock ALICE DCS Workshop

  7. Cabling issues • Several issues related to cabling were presented in the last workshop • These concern control, interlock and network cables • In most cases the responsibility is as follows: • We define the cables and connectors • You define where they go (the ‘nodes’, in the cable database) ALICE DCS Workshop

  8. Cabling issues[control cabling: ELMB CANbus] • Carries bus and power • For ALL detectors power is provided centrally • All cabling starts from CR3 • Both power (rack Z08) and bus (racks Z01-Z06) • Up to the first ELMB a ‘big’ cable is used • To limit voltage drop • A ‘patch box’ is under development • A ‘standard’ ELMB to ELMB cable is under definition SCEM: 04.21.60.491.2 prototype exists defined SCEM: 04.21.60.430.5 ALICE DCS Workshop 13 June 2005

  9. Cabling issues[control cabling: ELMB CANbus] Central powersupplies [in CR3] • Do not use flat cables when not strictly needed • Sensor – ELMB cabling is up to you • But we can help • Related point:Signal adapters are (will be) centrally available • Communicate us your needs! Rack mounted PCs With Kvaser CAN card [in CR3] CANbus Power Defined/delivered by central DCS team (paid by detectors) CANbus & Power [in same cable] patchbox Guidelines by central DCS team Need to be ordered ELMBs [on detector?] to Sensors ALICE DCS Workshop 13 June 2005

  10. Cabling issues • With the rack layout becoming clearer, other cables can be defined: • CAEN bus from branch controller to easy crates • ‘normal’ CAN bus (Iseg HV, crate control Wiener VME) • Network (to Wiener LV, CAEN SY, Switches etc.) • Communicate any change in rack layout to Jean-Pierre Vanuxem and/or us • These files are our source of information! ALICE DCS Workshop

  11. Summary • One interlock per detector for cooling and gas • Discuss with SDD • Look at distribution of interlock signal • Cabling more and more defined • Communicate your ELMB needs • Keep your rack layout up to date ALICE DCS Workshop

More Related