Matched electronics
The RMU101 board and specified battery belong to the same replacement workflow. Their combination restores both live resolver acquisition and the stored multi-turn position record.
ABB robot serial measurement systems
ABB 3HAC046686-004SMB Replacement Set
01
Model Information
ABB 3HAC046686-004 is an SMB replacement set for ABB robot serial measurement systems. It brings the RMU101 measurement board, battery, mounting hardware, cable ties and identification material together so the existing resolver harnesses can be transferred to one documented replacement assembly.
Within ABB 3HAC046686-004, RMU101 board 3HAC044168-001 receives the robot-axis resolver connections while battery 3HAC044075-001 maintains the stored revolution record. The remaining kit pieces control board mounting, connector support and traceable identification; they are not alternative electronics.
Replacement with ABB 3HAC046686-004 begins with a de-energized robot and labelled SMB connectors. The old board and battery are removed in the prescribed order, the kit is secured without straining the harnesses, and revolution counters are updated only after the connected axes and calibration references have been checked.
02
Technical Specifications
| Technical item | Specification |
|---|---|
| Brand | ABB |
| Model | 3HAC046686-004 |
| Product name | SMB replacement set |
| Country | Sweden / Switzerland |
| Measurement board | RMU101 3HAC044168-001 |
| Battery pack | 3HAC044075-001 |
| Mounting plate | 3HAC046710-001 |
| Cable support | 3HAC046720-001 |
| Identification plate | 3HAC046250-001 |
| Protective component | 3HAC046287-001 |
| Included accessories | Cable ties and mounting hardware |
| Final service action | Update revolution counters |
03
Key Features
ABB 3HAC046686-004 is defined by the coordinated parts needed to replace an SMB without improvising its mounting or battery-backed measurement path.
Controlled mounting
The plate, protective component and cable support place the electronics and harnesses in their intended mechanical positions, reducing connector load and keeping service access clear.
Traceable kit content
Identification material and fixed kit references keep the completed assembly tied to 3HAC046686-004 after individual internal components have been installed.
04
Installation Highlights
Install ABB 3HAC046686-004 as a controlled transfer of the existing measurement chain, not as an isolated circuit-board swap.
Isolate and label
Stop the robot, isolate power and label every SMB connector by its original position before opening the enclosure. Support the harness so unplugging does not transfer force to the contacts.
Fit the replacement set
Remove the battery and board in the specified sequence, install the supplied mounting pieces, then seat the RMU101 board and reconnect the labelled resolver and controller plugs without twisting the cable bundle.
Restore the axis record
Close the enclosure, restore power in manual mode and confirm battery and SMB status. Reconcile each physical axis with its calibration mark before updating revolution counters and testing limited motion.
05
Common Product Questions
How should a technician confirm that the kit is complete before shutdown for ABB 3HAC046686-004?
For ABB 3HAC046686-004, check the RMU101 board, battery, mounting pieces, supports, identification parts and hardware against 3HAC046686-004.
What should be checked when a team needs to prevent axis connectors from being interchanged for ABB 3HAC046686-004?
For ABB 3HAC046686-004, label and photograph every SMB plug before removal, then transfer one connector at a time.
Why might a site need to handle the battery without losing the position record for ABB 3HAC046686-004?
For ABB 3HAC046686-004, follow the controlled battery and board sequence and avoid leaving the measurement path unsupported.
Which checks help a customer respond when an axis value is wrong after replacement for ABB 3HAC046686-004?
For ABB 3HAC046686-004, stop commissioning and verify connector positions before changing calibration data.
What is the safest way to decide when revolution counters must be updated for ABB 3HAC046686-004?
For ABB 3HAC046686-004, update them after the new SMB path is stable and each physical axis is placed at its documented reference.
How can commissioning staff protect the new board during installation for ABB 3HAC046686-004?
For ABB 3HAC046686-004, use the supplied supports and mounting pieces so the harness and enclosure do not press on the RMU101 board.
06
Our Services
Moore Automation
https://www.mvme.cn/Moore Automation can keep kit content, robot family, requested quantity and delivery destination in one service record while the customer verifies the installed SMB version.
Kit reviewIncluded references checked together
Photo supportExisting connectors can be documented
Destination recordCommercial details remain linked
07
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08
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