ABB 3HAC025527-004 DSQC639 IRC5 Main Computer Unit

Product Condition	New original or used original. Please confirm the condition with us before ordering.
Shipping	Ships from Shanghai, China. Typical delivery lead time is 3-5 working days after order confirmation, via DHL / FedEx / UPS with secure protective packaging. Actual lead time depends on the specific condition and stock status confirmed with us.
Buyer Benefits	Genuine ABB 3HAC025527-004 — ABB's DSQC639 main computer unit, the IRC5 controller's central processing unit that runs the RobotWare operating system and handles the robot's motion calculation and communication tasks. Supplied as the full assembly: computer board, RAM, cabinet and cooling fan. ABB's service instruction is to transfer the optional boards from the failed unit onto the replacement, so the option set travels with your controller. Direct replacement for the DSQC639 position in IRC5 controllers — ABB lists it one-per-controller (IRC5 Controller 3HAC020536-014) and it covers both the IRC5 Single and the IRC5C Compact controller categories. Same unit under related article numbers: 3HAC041443-003 (the same DSQC639 with the metal box) and 3HAC025097-001 (board level, without the box) — useful if your records or the removed unit show a different but equivalent number. ABB has discontinued this unit; its documented modernization route is upgrade kit 3HAC079227-001, which requires RobotWare 5.30. Check your RobotWare level before committing to a like-for-like swap. Each unit is inspected and packed with full order tracking from Shanghai.
Item Location	Shanghai, China
Payment	We accept PayPal, T/T (bank transfer), and Alibaba Trade Assurance.

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Description

Main Computer Unit for ABB IRC5 Robot Controllers

Specifications

Part Number	3HAC025527-004
Brand	ABB
ABB Type Designation	DSQC639
Category	Main computer unit (controller) for ABB IRC5 robot controllers — the controller's central processing unit.
Definition	The central processing unit of the IRC5 controller. It runs the RobotWare operating system and executes the robot's motion calculation and communication tasks.
Function	Runs the RobotWare OS, executes RAPID programs, calculates multi-axis motion kinematics, and manages communication with the drive units, SMB and FlexPendant. It is the controller's "brain": without it the robot cannot run.
Controller Compatibility	ABB IRC5 controllers. ABB lists the unit one-per-controller for IRC5 Controller 3HAC020536-014 and places it in both the IRC5 Single and the IRC5C Compact controller categories.
What's Included	Computer board, RAM, cabinet and cooling fan. Optional boards are not included — ABB's service instruction is to transfer the optional boards from the failed unit onto the replacement.
Related Article Numbers	We confirm the related article numbers for your unit before supply — send us the part number and the machine it came from.
Lifecycle / Upgrade Path	ABB has discontinued this unit. The documented modernization route is upgrade kit 3HAC079227-001, which requires RobotWare 5.30. Confirm your RobotWare level before choosing repair versus upgrade.
Manual Reference	ABB RobotStudio operating manual 3HAC032104-001 and ABB IRC5 service documentation (ABB reference boundary for this article). IRC5 product manual 3HAC047136-001 covers IRC5 with main computer DSQC10xx — note DSQC639 is an earlier IRC5 main-computer generation.
Net Weight	Send us your part number — we confirm the packing weight of this unit with your quote.
Dimensions	Send us your part number — we confirm the dimensions of this unit with your quote.
Customs Tariff Number	Classified for your destination at quotation — send us your part number and we confirm the HS code on the invoice.
Country of Origin	Stated on the commercial invoice. Send us your part number and we confirm the origin for your shipment.
Condition	New original or used original. Please confirm the condition with us before ordering.

Industrial Applications

Replacing a failed DSQC639 main computer in an IRC5 controller that will not boot or shows a computer-fault condition.
Restoring an IRC5 Single or IRC5C Compact controller after a DSQC639 hardware fault.
Modernizing a discontinued DSQC639 installation via upgrade kit 3HAC079227-001 (RobotWare 5.30).
Keeping a spare main computer on the shelf for IRC5 production lines where controller downtime is costly.
Transferring the option-board set from a failed unit so the controller's configuration and option set are preserved.
Service for automotive, welding, assembly and material-handling cells built on the IRC5 platform.

Design Purpose

The DSQC639 is the IRC5 controller's central processing unit — the part ABB's documentation calls the main computer. It runs the RobotWare operating system, executes RAPID programs, plans the robot's motion trajectories and handles real-time communication with the drive units, the SMB (serial measurement board) and the FlexPendant. In practical terms it is the controller's "brain": every program, calibration and safety function that the robot runs is calculated and dispatched from here, so a fault at this position takes the whole cell down.

What makes a single article number worth its own page is that ABB records the DSQC639 under several article numbers and offers two very different service routes. The same physical main computer ships as 3HAC025527-004, as 3HAC041443-003 (with the metal box) and as 3HAC025097-001 (board level, no box) — so the number on a buyer's record may differ from the one on the removed unit even though the hardware is the same. On top of that, ABB has discontinued the DSQC639 and points to upgrade kit 3HAC079227-001 (which requires RobotWare 5.30) as the modernization path, while a like-for-like 3HAC025527-004 remains the direct replacement for a same-configuration swap. Knowing which article and which route matches your controller and RobotWare level is the difference between a 30-minute swap and an order for the wrong generation — and because DSQC639 is an earlier IRC5 main computer (later IRC5 controllers use the DSQC10xx generation), matching the exact article and configuration matters.

Before you order and before you install

Confirm the exact article and controller reference: ABB lists the DSQC639 one-per-controller for IRC5 Controller 3HAC020536-014 (IRC5 Single and IRC5C Compact). The same board also appears under 3HAC041443-003 and 3HAC025097-001, so match the article to your records.
Check your RobotWare level first: upgrade kit 3HAC079227-001 requires RobotWare 5.30. A like-for-like 3HAC025527-004 replacement must match the existing configuration but is not an upgrade — pick the route before you order.
Transfer the optional boards: ABB supplies the computer unit without option boards. Move the optional boards from the failed unit onto the replacement, or the controller's option set will be lost.
Isolate the controller: disconnect main AC power and verify zero voltage before opening the cabinet, working to the applicable ABB IRC5 service manual and using qualified personnel.
Use ESD protection: wear an earthed wrist strap when handling the board — the electronics are sensitive to static discharge.
Reload software and restore the backup: the new unit is hardware only. After fitting, load the RobotWare version and restore the system backup (including calibration data) via RobotStudio before returning the cell to production.
Verify against your controller: confirm the article number, hardware revision and configuration against the controller serial number before commissioning.
Confirm the condition with us: tell us whether you need new, used or refurbished before ordering.

Common Failure Modes

Controller fails to boot or RobotWare will not start — a DSQC639 hardware fault.
"Computer failure" status LED, or persistent FlexPendant communication timeouts.
System-card (CF / SSD) corruption — the boot media is a separate item and its failure prevents startup.
Cooling-fan failure causing the processor to overheat under continuous operation.
CMOS / battery depletion triggering critical controller alarms.
Wrong article ordered (boxed 3HAC025527-004 versus board-only 3HAC025097-001) so mounting or the option set does not match.
Optional boards not transferred from the old unit, losing the controller's configuration.
Upgrade kit 3HAC079227-001 attempted without RobotWare 5.30, so the modernization cannot proceed.

ABB does not publish a single alarm code for a DSQC639 fault — failures normally appear as boot errors, a computer-fault LED or communication timeouts. Please contact us with the fault code shown on your controller for accurate diagnosis.

Why Choose Us

Specialized in industrial robot spare parts and consumables for ABB, FANUC, KUKA and YASKAWA.
We supply the exact ABB article 3HAC025527-004 (DSQC639 main computer unit), matching the number in your IRC5 controller record.
We help you decide repair versus upgrade: a like-for-like 3HAC025527-004 or modernization kit 3HAC079227-001 (RobotWare 5.30). Tell us your RobotWare level and we point you to the right route.
We cross-check the related article numbers (3HAC041443-003, 3HAC025097-001) so you receive the variant your records actually show.
Each unit is inspected and packed to protect the board, with full order tracking from Shanghai.
Quote-based service — send your inquiry with the controller model, serial number and RobotWare level for a matched offer.

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