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9000-4001

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Alstom 9000-4001 is a Starnet Microdrive ribbon changeover unit with two labelled ribbon paths and relay-controlled switching points for the installed control assembly.
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Technical specifications for 9000-4001

  • Manufacturer:
    Alstom
  • Part Number:
    9000-4001
  • Product Family:
    Alstom
  • Product Type:
    Starnet Microdrive Ribbon Changeover Unit
  • Stock:
    1
  • Assembly function:
    Ribbon changeover unit
  • Control family:
    Starnet Microdrive
  • Visible paths:
    Ribbon 1 and Ribbon 2
  • Switching elements:
    Relay-labelled changeover circuits
  • Weight:
    0.56 kg
  • Estimated shipping dimensions:
    23.9x14.2x3.9cm
  • Tariff Code:
    8537109090
  • Country of origin:
    Please confirm from the supplied unit
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Installation & Integration Monitoring Diagnostics & Protection Applications

Features:

  • Changeover role: Routes two labelled ribbon paths through relay-controlled switching points.
  • Service references: Enclosure legends identify ribbon, relay, and terminal positions.
  • Cabinet format: Mounting flanges support installation within the established control assembly.
The enclosure provides useful visual references for maintaining the original signal route.

Ribbon orientation and relay wiring should be captured before the unit is removed.

Electrical ratings remain tied to the approved Starnet documentation for the installed system.

Apter Power supports 9000-4001 quotations, document requests, and application review for the installed Starnet assembly.
Alstom 9000-4001 Starnet Microdrive Ribbon Changeover Unit Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Path separation: Keep Ribbon 1 and Ribbon 2 tagged throughout removal and refitting.
  • Orientation: Photograph keyed connectors and cable exits before releasing them.
  • Continuity: Test each route independently when only one path shows a fault.
  • Strain relief: Restore cable support so connector load is not carried by the ribbon conductors.
  • Command check: Verify the changeover command reaches the intended relay circuit.
  • Contact test: Use the approved procedure to inspect switching continuity without bypassing safeguards.
  • Terminal map: Retain the numbered conductor schedule with the cabinet drawings.
  • Visual inspection: Check terminal security, enclosure damage, contamination, and loose hardware.
  • Isolated diagnosis: Separate cable, relay-command, and downstream faults before condemning the unit.
  • Recommissioning: Exercise both paths and document the resulting control response.
  • Baseline: Keep the final test results with the maintenance history.
  • Starnet cabinets: Maintains dual ribbon routing in established Microdrive control assemblies.
  • Changeover service: Routes the two labelled ribbon paths through the relay-controlled assembly.
  • Cabinet integration: Fits the original flange-mounted position where the established terminal arrangement is retained.
Description
Within the Starnet Microdrive assembly, 9000-4001 provides a dedicated ribbon changeover function. The enclosure markings separate Ribbon 1 and Ribbon 2 and identify relay-controlled paths, giving technicians clear connection references during cabinet work.

Before disturbing 9000-4001, the installed ribbon orientation, terminal numbering, relay wiring, and chassis position should be photographed. Those details preserve the original signal route and reduce the risk of crossing the two ribbon paths during recommissioning.

Apter Power can support 9000-4001 requests with quotation preparation, label review, documentation coordination, and application guidance based on the supplied unit and the customer’s control drawings. No unverified electrical ratings or substitute claims are assigned to this legacy assembly.
Alternative Names
90004001 9000 4001 9000/4001 9000-400I ALSTOM 9000-4001 Starnet 9000-4001 Starnet Microdrive 9000-4001 9000-4001 Changeover Unit
Technical notes
For 9000-4001, preserve the two ribbon paths, connector orientation, terminal numbering, relay labels, and chassis position before removal. Test the relay command and each routed signal separately so a cable or upstream fault is not assigned to the changeover unit. Use the approved Starnet drawing for recommissioning.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What should be documented before disconnecting 9000-4001?
Photograph both ribbon paths, terminal numbering, relay labels, cable orientation, and the chassis position before removing any connection.
One path through 9000-4001 is inactive while the other remains available; what should be checked first?
Trace the affected ribbon, relay command, terminal continuity, and mating connectors separately before assigning the fault to the unit.
Can the two ribbon connections on 9000-4001 be interchanged during service?
Do not interchange them unless the approved Starnet drawing explicitly permits it; the enclosure identifies two distinct signal paths.
What receiving inspection is appropriate for 9000-4001?
Compare the complete label, enclosure condition, terminal layout, relay markings, and mounting points with the installed assembly.
Which documents help commission 9000-4001 after installation?
Use the site wiring diagram, ribbon routing photographs, terminal schedule, relay logic, and approved functional test procedure.
What information should accompany a quotation request for 9000-4001?
Provide clear labels, both connector views, cabinet position, quantity, condition requirements, destination, and the documents needed by the project.