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Drag Chain Assembly

This section will guide the reader on how to properly assemble the LumenPNP v4 Drag Chain Assembly.

QC Harnesses

Before assembling the drag chain, QC the individual cable harnesses from the manufacturer.

  • Head Harness
    • Labels are all correct bad label
    • Colors on head side are correct
    • Z MOTOR, L MOTOR, and R MOTOR cables have inner conductors swapped on the head side only.
    • Z MOTOR, L MOTOR, and R MOTOR connectors skips positions 2 and 5 on the head side only.
    • All crimps are fully loaded
    • No loose conductors/Exposed wire
  • X Gantry
    • X MOTOR connector has inner conductors swapped gantry side only.
    • X MOTOR connector skips positions 2 and 5 on the gantry side only.
    • Labels are all correct bad label
    • All crimps are fully loaded
    • No loose conductors/Exposed wire

Prepare cable-splay

  • Insert 2x M5-square-nut into cable-splay

    • Glue is not required even if the fit is loose

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Assemble Drag Chain

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QC Crimps

Inspect the cables for any loose crimps, reworking as needed, before continuing

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Rubber Band Loose Cables

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Remove Drag Chain from Jig

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OQC Checks

  • Inspect the cable-splay side of drag-chain and confirm the following cables are present and installed in the correct direction

    • LM cable: 6-pin connector with a redLM label
    • RM cable: 6-pin connector with a blue RM label

  • Confirm the following vacuum tubes are present at both ends:

    • Red 4mm-pneumatic-tubing
    • Blue 4mm-pneumatic-tubing

  • Confirm no vacuum tubes are pinched closed by the rubber banding

  • Confirm 3x zip-tie used in cable-splay are trimmed flush and present
  • Confirm presence of top-camera-cable

  • Confirm presence of x-harness and double check that x-harness has the correct orientation

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If all checks pass, place the completed drag-chain into a yellow NEEDS QC bin found on the pack-out shelf while it awaits Buddy review