Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | ABB 3HEA800906-001 |
| Manufacturer | ABB Robotics (Sweden / Estonia) |
| Product Type | Node Splitter / Bus Distribution Box (Robotics) |
| Series | ABB 3HEA8 (Robotics Spares) |
| Class Tag (per distributor) | SEROP_SCAN |
| Primary Function | SMB/servo-bus or robot-internal-bus 1→2 branch (external axis, multi-SMB, dual-robot) |
| Secondary Application (some vintages) | Arc/spot weld pack DeviceNet/CAN branch — verify plug type |
| Connector Type | RJ45 (dominant SKU) — some weld-pack vintages cite 5-pin DIN or M12 A-coded |
| Mounting | DIN rail |
| Protection Class | IP20 (cabinet install) |
| Dimensions (D × H × W) | 127 × 53 × 27 mm |
| Weight | 0.1 kg (net & gross) |
| Operating Temp. | –20 °C to +70 °C |
| Bus Physical | SMB/servo internal (RJ45 SKU) or DeviceNet/CAN (DIN/M12 SKU, vintage-dependent) |
| External Supply | None (passive splitter / bus repeater-less branch — bus powered from IRC5 main) |
| Associated Tariff (HS) | 85176200 (network equipment, per distributor) |
| Compatible Cabinets | IRC5 (single/dual), S4C+, S4C (per robot config) |
| Companion Devices | DSQC633 (SMB), DSQC652 (I/O), SMB cables, teach pendant, drive unit |
| Status | Legacy / slow-moving; NOS (new surplus) primary supply channel |
| Origin (typical) | Sweden (SE) / Estonia (EE) per batch |
Main Features and Advantages
SMB/servo-bus 1→2 branching without re-loom:
The ABB 3HEA800906-001 exists because ABB’s SMB chain (robot-arm encoder + resolver + motor-data loop) is a daisy chain, not a star. Adding an external-axis positioner or a second SMB (dual-arm cell, or a “long-reach” IRB with mid-arm SMB + wrist SMB) normally means cutting and re-terminating the SMB trunk. The ABB 3HEA800906-001 gives a clean Y: incoming SMB bus lands on the “line-in” RJ45, two “line-out” RJ45s fan to robot-arm SMB and positioner/external-axis SMB. No soldering, no re-crimping SMB D-sub/M12 hybrids, no re-certifying the trunk impedance — the Node Splitter preserves the bus characteristic and keeps the external-axis addition reversible.
DIN-rail, zero-footprint in the cabinet:
At 127 × 53 × 27 mm and 0.1 kg, the ABB 3HEA800906-001 tucks onto any free DIN rail in the IRC5 controller (typically the TS/AX/DX rail group, or the accessory DIN strip above the main computer). It doesn’t consume a slot, doesn’t need a 24 V terminal, and doesn’t generate heat. For retrofit projects where the cabinet is already full (drive units, DSQC IO, profibus couplers, weld-interface units), the ABB 3HEA800906-001‘s “free-DIN” footprint is the reason it gets specified over a smarter active repeater — most IRC5 cells don’t need active re-timing on a 2–3 m SMB extra leg; they just need the Y.
RJ45 passive — low failure mode, but wear shows at the inserts:
Because the dominant ABB 3HEA800906-001 SKU is RJ45 and passive (no regen), the failure modes are mechanical, not electronic: the RJ45 latch tabs fatigue after 10–15 years of cabinet access (electricians bumping it during DSQC swaps), or the internal PCB traces at the DIN-clip side crack if the cabinet sees sustained >+60 °C (some weld-cell electrical rooms drift that high). When it fails, symptom is “SMB comms lost on branch B” — the arm SMB stays up, the external-axis SMB drops. Swapping the ABB 3HEA800906-001 takes 3 minutes: unplug 3 RJ45s, unclip DIN, clip new, replug. That’s the whole maintenance story.
Weld-pack DeviceNet/CAN variant (vintage caution):
Some reseller docs ( cxplcparts) describe the ABB 3HEA800906-001 as a “DeviceNet/CAN node splitter for Arc/Spot Weld Pack” with 5-pin Mini-Circ DIN or M12 A-coded, 120 Ω terminal optional. If your cabinet’s weld pack truly uses DeviceNet to the weld-power-source or secondary-robot interface, and the live splitter has DIN/M12 not , you may have the weld-pack sub-SKU — not the SMB SKU. ABB reused the 3HEA800906-001 ordering number across minor plug-variant runs in the mid-2000s to early 2010s. The safe move: photograph the live unit’s connector before ordering replacement ABB 3HEA800906-001 — vs 5-pin DIN vs M12 A-coded are not interchangeable, and “Node Splitter” is the function name, not the plug name.
Legacy A-class spare, NOS channel:
The ABB 3HEA800906-001 is no longer an active high-runner — ABB’s current IRC5 external-axis topology prefers the newer SMB-branch couplers and the OmniCore generation has moved the branching onto the controller backplane — so supply is NOS / new-surplus / verified-pull. For plants with 5–20 IRC5 cells doing external-axis or dual-arm (automotive bodyshop tandem robots, weld-job-shop IRB 1520+positioner, foundry IRB 2600+indexer), the ABB 3HEA800906-001 is a <200 insurance part. One per 4–5 cabinets is the usual ratio; for bodyshop lines where a down cell = 10k/hour, one per cell isn’t crazy.