ABB 3HAC024775-001 / 3HAC044168-001 – SMB Serial Measurement Board | IRC5 Robot Controller Platform
Engineering Background
The SMB (Serial Measurement Board) is a mission-critical feedback interface within ABB’s IRC5 and S4C+ robot controller architecture. Designated under part numbers 3HAC024775-001 and 3HAC044168-001 (interchangeable revision), this board manages real-time serial communication between the robot’s axis computer and the resolver/encoder units mounted on each joint motor. Loss or degradation of this board results in immediate axis fault codes and production stoppage — making fast, verified replacement sourcing essential for maintenance engineers.
Product Positioning
Konmask.com supplies this SMB board as a direct OEM-equivalent replacement, sourced through verified industrial channels. Each unit undergoes functional inspection prior to dispatch. This listing is intended for procurement engineers, robot maintenance teams, and system integrators operating ABB IRC5-family installations across automotive, electronics, and general manufacturing environments.
Complete Technical Specifications
| Manufacturer | ABB Robotics (Sweden) |
| Primary Part Number | 3HAC024775-001 |
| Alternate Part Number | 3HAC044168-001 |
| Internal Reference | 1N2140 |
| Board Function | Serial Measurement Board (SMB) – axis resolver/encoder feedback interface |
| Compatible Controller | ABB IRC5 (single cabinet, dual cabinet, panel-mounted); ABB S4C+ |
| Compatible Robot Families | IRB 140, IRB 1600, IRB 2400, IRB 4400, IRB 6600, IRB 6640, IRB 7600 and related variants |
| Communication Protocol | Serial resolver measurement (proprietary ABB SMB protocol) |
| Axes Supported | Up to 6 axes + external axis capability |
| Battery Backup | Onboard battery connector for resolver memory retention (battery not included) |
| Operating Voltage | 24 VDC (supplied via controller backplane) |
| Form Factor | PCB module, DIN-rail/backplane mount within IRC5 cabinet |
| Weight | Approx. 100 g (board only) |
| Country of Origin | Sweden |
| Condition | New / Refurbished-tested (specify at inquiry) |
Proven Application Environments
- Automotive body-in-white welding lines – IRC5-controlled IRB 6640 spot welding cells requiring zero-downtime SMB replacement
- Electronics assembly – High-precision IRB 1600 / IRB 140 pick-and-place lines where resolver accuracy is critical
- Palletizing & material handling – IRB 4400 / IRB 7600 heavy-payload applications with continuous multi-shift operation
- Painting & coating booths – Explosion-proof IRC5 variants requiring OEM-matched SMB boards
- Preventive maintenance programs – Spare parts inventory for multi-robot facilities managing ABB IRC5 fleets
Engineering Advantages
- Dual part number coverage – 3HAC024775-001 and 3HAC044168-001 are functionally interchangeable; this listing covers both revisions, eliminating sourcing ambiguity
- Resolver memory integrity – Onboard battery-backed SRAM preserves axis calibration data during power-off, preventing costly re-calibration after board swap
- Direct OEM form-fit-function – No firmware modification or parameter re-mapping required; plug-in replacement within IRC5 cabinet
- Pre-dispatch functional inspection – Each board is bench-tested for communication continuity and resolver channel integrity before shipment
- Global logistics ready – ESD-safe packaging, export documentation, and DDP/DAP shipping options available
System Architecture & Signal Flow
Within the IRC5 controller, the SMB board sits between the Axis Computer (DSQC 668 / DSQC 639) and the resolver units on each robot joint. The signal flow is:
- Axis Computer issues excitation signal to SMB via backplane connector
- SMB distributes resolver excitation to each joint (axes 1–6 + external)
- Resolver feedback (sin/cos signals) is digitized on the SMB and transmitted serially to the Axis Computer
- Position data is used by the motion controller for real-time path interpolation
- Battery-backed SRAM on SMB retains last known position for safe restart after E-stop or power loss
Fault codes typically associated with SMB failure: 50001, 50002, 50052, 38203 (resolver communication error, SMB battery low, axis position lost).
Sourcing & Quality Verification
- Supply chain: Sourced from authorized ABB distributors, OEM surplus, and certified industrial resellers — no counterfeit risk
- Inspection standard: Visual inspection (PCB, connectors, solder joints) + functional bench test on IRC5-compatible test rig
- Documentation available: ABB product certificate, test report, packing list — provided on request
- Traceability: Batch and serial number recorded for each unit shipped
- Warranty: 90-day replacement warranty against DOA or functional defect
Procurement Process
- Confirm compatibility – Provide your IRC5 controller serial number or robot model; our engineers verify fit
- Request quotation – Contact support@konmask.com or WhatsApp +0086 19859288691 for volume pricing and lead time
- Place order – Secure checkout via Shopify; wire transfer / TT available for B2B orders above USD 500
- Dispatch & tracking – Ships within 1–3 business days; DHL / FedEx / SF Express with full tracking
- After-sales support – Installation guidance and fault-code diagnosis support included
Technical FAQ
Q: Is 3HAC024775-001 the same as 3HAC044168-001?
A: Yes. 3HAC044168-001 is a revised hardware revision of 3HAC024775-001. Both are functionally identical and directly interchangeable in all IRC5 controller variants.
Q: Do I need to recalibrate the robot after replacing the SMB board?
A: If the onboard battery is intact and the board is swapped while the controller is powered down correctly, resolver memory is retained and recalibration is not required. If battery is depleted, axis calibration (fine calibration) will be needed.
Q: What battery does the SMB board use?
A: The SMB uses a 3.6V lithium battery (ABB part 3HAC044075-001 or equivalent ER14250). Battery is not included but is available separately.
Q: Can this board be used with S4C+ controllers?
A: Compatibility with S4C+ depends on the specific robot model and controller revision. Please contact us with your controller serial number for confirmation before ordering.
Q: What is the lead time for urgent orders?
A: In-stock units ship within 24 hours. For out-of-stock situations, typical lead time is 5–10 business days. Express sourcing available for critical production downtime scenarios.
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Contact: support@konmask.com | +0086 19859288691
