Product Core Brief

• Model: DSQC626
• Order Code: 3HAC026289-001
• Brand: ABB
• Series: ABB IRC5 Robot Controllers
• Core Function: Interface board for ABB IRC5 robot controllers — manages internal control and I/O expansion signaling within the IRC5 system, supporting coordination between the controller and external automation equipment such as sensors, actuators, conveyors, and safety devices.
• Product Type: Interface Board / I/O Expansion Board
• Key Specs: Internal control and I/O expansion signaling | Backplane-supplied 24 VDC logic | Plug-in board for IRC5 controller slot | ESD-safe replaceability
• Condition: New Original / New Surplus

Key Technical Specifications

• Product Type: Interface Board for ABB IRC5 Robot Controllers
• Brand: ABB
• Model Number:
• Order Code: 3HAC026289-001
• Series: ABB IRC5 Robot Controllers
• Core Function: Manages internal control and I/O expansion signaling within the IRC5 system, supporting coordination between the controller and external automation equipment such as sensors, actuators, conveyors, and safety devices
• Signal I/O Types: Internal control and I/O expansion signaling within the IRC5 system (not a standalone field I/O block)
• Communication Interface: IRC5 controller backplane interface; internal ribbon/board-to-board connectors as per controller revision
• Power Requirements: Backplane-supplied; 24 VDC logic supply typical within IRC5 cabinet power distribution
• Operating Temperature: 0 to +55 °C (typical cabinet environment for controller electronics)
• Installation Method: Plug-in board for IRC5 controller slot; screw/retainer fixation; ESD-safe handling required
• Compatibility: Intended for ABB IRC5 systems; specific use may depend on controller options and firmware
• Product Status: Discontinued (spare parts supply) — compatible with ABB IRC5 controller ecosystems
• Typical Applications: I/O communication for ABB IRC5-controlled industrial robots — managing signal exchange with peripheral devices in automotive body-in-white cells, material handling, palletizing, machine tending, general assembly, and packaging; serving as a critical spare part for lifecycle support of mature IRC5 robot installations where interface board replacement is required

 

Product Introduction

The ABB DSQC626 (order code 3HAC026289-001) is an interface board designed for ABB’s IRC5 robot controller platform, engineered to manage internal control and I/O expansion signaling within the IRC5 system. In an automated robot cell, the DSQC626 plays a critical role in coordinating signal flow between the controller’s internal processing and external automation equipment — handling signals from sensors, actuators, safety devices, conveyors, and end-of-arm tooling. This enables the robot to synchronize its actions with the broader production environment, ensuring seamless integration with peripheral equipment.

What distinguishes the DSQC626 in IRC5 installations is its role as an internal expansion interface rather than a standalone field I/O block. It connects directly to the IRC5 controller’s backplane via internal ribbon or board-to-board connectors, ensuring low-latency, deterministic communication that is essential for synchronized robotic operations. The board is backplane-supplied with 24 VDC logic, drawing power directly from the IRC5 cabinet’s internal power distribution — eliminating the need for external power connections and simplifying cabinet wiring.

The DSQC626’s plug-in form factor with screw/retainer fixation means replacement is a straightforward like-for-like swap during planned maintenance or urgent repairs. Its ESD-safe design allows for controlled swap-outs without risking damage to the board or controller electronics. For system integrators and maintenance engineers supporting mature IRC5 robot installations, the DSQC626 is a critical spare part. As a discontinued product, availability of genuine units is essential for lifecycle support — an interface board failure can prevent the robot from communicating with peripheral devices, effectively halting production.

QA & Testing SOP

Every unit undergoes a standardized verification process before shipment:

• Visual & Anti-Counterfeit Check: Inspect the board for proper ABB branding and part number marking (DSQC626, 3HAC026289-001). Check for physical damage including cracked housing, damaged connector pins, burnt components, or signs of moisture ingress (corrosion, white residue on contacts).
• Connector Pin Inspection: Examine all connector pins (backplane interface, internal ribbon connectors) for straightness, corrosion, or bending. Damaged pins can cause intermittent connections or signal errors.
• Communication Interface Test: Establish communication with an IRC5 controller and verify that the DSQC626 is recognized correctly with no communication errors. Verify that command transmission and response times are within specification.
• Signal Processing Test: Verify that the board processes internal control and I/O expansion signals with minimal latency, ensuring real-time response to external triggers.
• Power Supply Test: Verify that the board draws correct 24 VDC logic supply from the IRC5 backplane and that internal power regulation is functioning within specification.
• Long-Duration Stability Test: Run the DSQC626 under continuous signal cycling for an extended period to verify stable performance with no signal dropouts, communication errors, or processing failures.
• Anti-Static & Mechanical Protection: After passing all tests, the board is placed in anti-static shielding with protective caps on connectors. It is then packed in rigid cardboard with foam cushioning to prevent mechanical shock and ESD damage during transit.

Installation Pitfalls & Guide

Real-World Risks When Replacing This Module:

❗ Controller Compatibility: The DSQC626 is designed exclusively for ABB IRC5 robot controllers. It is not compatible with older S-Series (S3/S4/S4C) controllers or OmniCore controllers, which use different I/O architectures. Always verify your controller model before ordering.

❗ Firmware Compatibility: Specific use of the DSQC626 may depend on controller options and firmware version. Always verify that your IRC5 controller’s firmware supports the DSQC626 board before installation.

❗ Incorrect Slot Placement: The DSQC626 must be installed in the correct IRC5 controller slot position as specified in the controller’s configuration. Installing it in the wrong slot can prevent the controller from recognizing the board, resulting in communication errors. Always verify the slot assignment matches the system documentation before insertion.

❗ ESD Handling: The DSQC626 is designed for ESD-safe replacement. Always use proper anti-static precautions (wrist strap, anti-static mat) when handling the board to prevent electrostatic damage to sensitive components.

❗ Power-Down Requirement: Always power down the IRC5 controller before inserting or removing interface boards. Handling boards while the system is powered can cause electrical damage to the board or controller.

❗ Configuration Backup: Before replacing the board, always back up the current controller configuration from the teach pendant. This ensures that I/O assignments and system parameters can be restored if needed after installation.

4-Step Replacement Guide:

1. Pre-Install: Identify the failed DSQC626 slot position in the IRC5 control cabinet. Document the existing configuration from the teach pendant or backup files. Back up the current controller configuration. Power down the IRC5 controller and disconnect the main power supply. Put on an anti-static wrist strap.
2. Removal: Disconnect any external cables connected to the DSQC626. Release the screw/retainer fixation and carefully slide the old board out of the controller slot. Inspect the backplane connector for damage or debris.
3. Install: Insert the new DSQC626 board into the correct controller slot, ensuring proper alignment with the backplane connector. Secure the board with the screw/retainer fixation. Reconnect any external cables, verifying correct terminal assignments and that connectors are fully seated.
4. Power-On Test: Reconnect the main power supply and power up the IRC5 controller. Verify that the controller recognizes the DSQC626 board with no communication errors. Check the board status indicators for normal operation. Run a test program that exercises the I/O signals to verify stable performance.

 

Technical FAQ

What is the DSQC626 used for? The DSQC626 is an interface board for ABB IRC5 robot controllers that manages internal control and I/O expansion signaling within the IRC5 system. It supports coordination between the controller and external automation equipment such as sensors, actuators, conveyors, and safety devices, enabling seamless integration of the robot into the broader production environment.

What are common failure modes for this board? Common failure modes include: connector pin damage from repeated insertion/removal; communication interface failure from electrical noise or connector issues; signal processing errors from component aging; and power supply issues from backplane connection problems. In most cases, a failing DSQC626 will trigger communication or I/O errors in the controller diagnostics, which can be read from the teach pendant to identify the specific fault type.

Is the DSQC626 still in production? The DSQC626 is a discontinued product, with supply now limited to spare parts inventory (New Original / New Surplus). ABB announced that the IRC5 controller platform will be gradually phased out starting June 2026, with OmniCore as its replacement. However, ABB has committed to continuing spare parts and service support for IRC5 installations throughout the remaining service life of deployed robots. For plants maintaining IRC5 robot installations, having verified genuine DSQC626 boards on hand is critical for lifecycle support.

What warranty do you offer on New Surplus parts? We provide a full 12-month warranty on all New Original / New Surplus units. This is fundamentally different from refurbished or pulled boards, which often carry 30–90 day warranties and come with unknown operational history, potential connector wear, and degraded component performance. For an interface board that is critical to robot-peripheral communication, the reliability difference between new surplus and refurbished directly impacts production uptime and the risk of unexpected communication faults.