ABB 3HAC059122-001 Serial Measurement Board DSQC3026

Compact Serial Measurement Board for Robot Position Feedback

Specifications

Industrial Applications

• Robot axis position feedback (resolver / encoder signal interface).
• Enables closed-loop motion control by supplying digitized position data to the axis computers.
• Retains revolution-counter / calibration reference data for the robot's position memory.
• Used across ABB robot position-feedback systems wherever a compact serial measurement board is specified.

Design Purpose

This is a measurement board that sits at the robot's position-feedback point — not a controller-cabinet board and not a teach-pendant control. Rather than running each axis's raw resolver wiring all the way back to the controller, the board consolidates the analogue resolver signals at the source and sends one clean serial link onward. That keeps the wiring short, shielded, and resistant to interference, so the faults you see from an SMB show up as measurement / communication symptoms rather than motor / drive faults.

As the DSQC3026 variant, it is a very compact low-profile board (approx. 0.04 kg, 100 × 15 × 60 mm) built for tight robot-body mounting. Because the unit is tied to revolution-counter retention, replacing it is not a pure mechanical swap — the robot normally needs its position reference re-verified and, where applicable, re-calibrated afterwards.

Common Failure Modes

• Loss of position reference / controller requests re-calibration.
• Revolution-counter data lost after power loss (often a backup / battery issue rather than the board itself).
• Measurement-link communication fault between the board and the axis computer.
• No position data on one or more axes.
• Intermittent position errors — usually a loose connector or damaged cable, not the board.
• Contamination or corrosion inside the enclosure in foundry / washdown environments.
• Damaged connector seals or cable entries after a collision or service.

Why Choose Us

• Genuine ABB Serial Measurement Board DSQC3026 (3HAC059122-001) — not a generic or aftermarket board.
• Fit-confirmation support: DSQC3026 is listed under more than one ABB order number, so we cross-check the exact number and revision on your unit label before you buy.
• Wrong-part avoidance: we distinguish this 0.04 kg DSQC3026 board from the 0.5 kg DSQC633A SMB (3HAC031851-001) and the 4.16 kg SMB box/MU (3HAC040654-001) — three different parts that sit in the same SMB category.
• Quotation-based supply with condition confirmed before ordering; no stock or dispatch-time promises.

Related Products

• 3HAC031851-001 — SMB-unit DSQC633A (robot body, 0.5 kg). Different part; quote us if your robot uses the DSQC633A variant.
• 3HAC040654-001 — SMB box / MU for ABB Motor Units (external axis, 4.16 kg). Different part; for external-axis measurement boxes.
• 3HAC028357-001 — FlexPendant DSQC679, used to re-verify and calibrate the robot after SMB replacement.