Transcript CAN Branch PS

Electronic Systems Support
CAN Branch PSU
Designed:
PH-ESS Responsible:
Bjorn Halgren
Paul Harwood
What is it?
16 June 2004
A 6U crate, containing
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CAN Branch PSU
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Power supply modules (up to 8)
CAN patch modules (up to 4)
Control & monitoring (ELMB)
Capacity
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Maximum of 16 isolated branches
Each branch powering up to 32 CAN
devices (depending on load)
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What does it do for you?
CAN Branch PSU
16 June 2004
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Provides the required CAN supply voltages
Provides a convenient method of ‘patching’ the CAN
bus into the cabling to the remote devices
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Connects directly to a Kvaser interface
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Provides; via a CAN interface (DCS)
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Monitoring (current, voltage) of each CAN bus branch.
ON/OFF control of each branch.
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Crate Details
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6U x 160mm
Contains ELMB for monitoring & control
CAN Branch PSU
16 June 2004
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Power Supply Module
CAN Branch PSU
16 June 2004
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2 CAN branches
Each branch electrically
isolated
12V, 2A CAN bus supply
12V, 3A Digital + Analogue
supply
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Patch Module
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CAN Branch PSU
16 June 2004
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4 CAN branches
Fitted to rear of
crate, patches
power & CAN bus
together
Takes 4 CAN inputs,
or 1 25way
connector from
Kvaser interface
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Current Status
CAN Branch PSU
16 June 2004
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Current activities
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Electrical, Thermal & Operational testing
about to commence
Building of 5 pre-production units to
satisfy immediate requirements
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5 crates, 20 PSU modules, 10 patch modules
This gives 5 half populated crates (8
branches), or an alternate combination
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What will it cost?
CAN Branch PSU
16 June 2004
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Costs are currently only estimates
Final unit costs will depend on production
quantities and the final production
contractor
Estimates shown below should be close, but
could vary in either direction
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Current Actions
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16 June 2004
CAN Branch PSU
Fix quantities required
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ALICE: ?
ATLAS: 40-50
CMS: ?
LHCb: 3-6
Search for a suitable contractor to build and
supply the production units (price enquiry)
Complete the testing, including EMC,
environmental etc.
Review production aspects of the design, to
improve cost, safety, reliability etc.
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Future Support
CAN Branch PSU
16 June 2004
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PH-ESS will
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Procure
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Against advance payments
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As for VME crates, TTC equipment, VMEbus SBCs
Test
Provide second-line support
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Repair
First-line support (spares) with experiments
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