Siemens 6FX8002-2CA31-1AH0 MOTION-CONNECT 800PLUS Encoder Cable: Complete Technical Guide
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What is the 6FX8002-2CA31-1AH0 cable?
A 7-metre MOTION-CONNECT 800PLUS encoder signal cable to order number 6FX8002-2CA31-1AH0 — the Siemens S-connection signal cable that runs a SINAMICS drive's encoder feedback to the motor, built as green drag-chain cable with a 26-pin high-density D-sub on the drive end and a keyed multi-pin metal circular connector (numbered contacts 1–19 plus the P position) on the encoder end. The bag label carries the full Siemens Connection System format — 6FX8002-2CA31-1AH0 7m · QTY 1 · M-D 14-18 · 9S 101186961071 · 1T TDY150561187021 · 质量检验合格 · CE · EAC · cULus · Siemens AG, Frauenauracher Str. 80, DE-91056 Erlangen · Made in Slovakia 斯洛伐克制造 — and the cable structure line reads 3X2×(2×1.5+2×1)+2×(3×1.5); the jacket print shows CSA E518733 AWM STYLE 20236 4C×0.22 mm² 600V 80°C on the signal group. Two pieces, recorded as new Chinese-made replacement stock (全新国产替代) on the intake — the packaging is styled after the Siemens original, so buyers who need guaranteed OEM provenance should say so explicitly in the RFQ. Recorded 20 December 2025 at about 3 kg for the pair. Ten photos plus the warehouse video below.
Part details
| Field | Value |
|---|---|
| Order number | 6FX8002-2CA31-1AH0 · 7 m — MOTION-CONNECT 800PLUS signal/encoder cable, S connection |
| Ends | 26-pin high-density D-sub (drive end) → keyed multi-pin metal circular connector, contacts numbered 1–19 plus P (encoder end) |
| Jacket | Green drag-chain cable |
| Structure (label line) | 3X2×(2×1.5+2×1)+2×(3×1.5) |
| Jacket print | CSA E518733 · AWM STYLE 20236 · 4C×0.22 mm² · 600 V · 80 °C · 1/II A/B |
| Bag label | Siemens Connection System styling, CE / EAC / cULus marks, 质量检验合格, M-D 14-18, 9S 101186961071, 1T TDY150561187021, Made in Slovakia 斯洛伐克制造 |
| Intake grading | New Chinese-made replacement (全新国产替代) — packaging styled after the Siemens original; confirm OEM provenance in the RFQ if required |
| Condition / quantity | Brand new, sealed bags — 2 pieces |
| Weight | About 3 kg for the pair |
| Intake recorded | 20 December 2025 |
Encoder cables fail quietly — order and install with that in mind
An encoder cable almost never fails all at once: an axis that ghosts under acceleration, loses position counts, or alarms only when the cable moves is showing you a conductor on its way out, which is why MOTION-CONNECT cables get stocked before they are needed. Three checks before this one is commissioned. Match the ends to your hardware — the 26-pin HD D-sub lands on the drive's encoder input and the keyed circular face on the motor's encoder box; the numbering on the connector face (1–19 plus P) is how the replacement should be compared against the original before it is routed, not after. Respect the drag-chain rating — the green jacket is built for constant flex, but it still wants a service loop, not a straight pull across a moving axis. And be honest about provenance: this lot is sold as replacement stock, and while the packaging reproduces the Siemens Connection System format completely, an RFQ that states "OEM required" or "replacement acceptable" is what keeps expectations aligned on both sides. The two cables photographed here arrived new and sealed, connectors unmated, jacket print factory-crisp.
Photos
All images below are original warehouse photos of the exact cables covered by this record, taken before dispatch. Click any photo to view it full size.
A power cable from the same MOTION-CONNECT family is listed in our shop as the 6FX8002-5DS23-1DA0 servo power cable page.
Sourcing help
KOEED stocks SINAMICS signal and power cables across lengths, OEM and replacement grades. Send the order number for a quote.
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