Description
Product Core Brief
The DSQC679 (Part Number: 3HAC028357-001) is the primary Human-Machine Interface (HMI) for the ABB IRC5 robot controller series. Often referred to as the FlexPendant or Teach Pendant, it allows operators to perform jogging, programming, and troubleshooting of the robot arm.
- Model: DSQC679
- Part Number: 3HAC028357-001
- Brand: ABB
- Controller Compatibility: IRC5 (Standard and Compact variants)
- Type: SXTPU2 (Teach Pendant Unit)
Key Technical Specifications
- Display: 6.5-inch Color Touchscreen (Resistive)
- Resolution: 640 x 480 pixels
- Input Hardware: 3D Joystick (for jogging), Membrane Keys, and Emergency Stop Button
- Safety Features: 3-position enabling device (Deadman switch) on the rear
- Communication: Dedicated FlexPendant cable interface (Circular connector)
- Operating System: Windows CE based environment (RobotWare)
- Protection Rating: IP54 (Dust and splash resistant)
- Weight: Approx. 1.3 kg

ABB DSQC679 3HAC028357-001

ABB DSQC679 3HAC028357-001

ABB DSQC679 3HAC028357-001
Installation & Maintenance Guide
Phase 1: Connection & Start-up
- Cable Alignment: Locate the circular connector on the front or side of the IRC5 controller. Align the keyway of the DSQC679 cable and rotate the locking ring clockwise until firmly seated.
- Boot Sequence: The FlexPendant will receive power from the controller. It may take 1–3 minutes to load the RobotWare interface.
- Calibration: If the touch screen is inaccurate, navigate to Control Panel > FlexPendant > Calibrate to realign the resistive touch membrane.
Phase 2: Common Maintenance Tasks
- Joystick Issues: If the robot drifts without input, the joystick may need a “center calibration” or replacement.
- Screen Protection: Always use a screen protector. The DSQC679 uses a resistive screen that can be damaged by sharp objects (pens, screwdrivers).
- Emergency Stop: Periodically test the E-stop button. Ensure it “clicks” and triggers the Guard Stop state on the controller.
Customer Cases & Industry Applications
Case 1: Automotive Welding Line Recovery
Situation: A Tier-1 automotive supplier in Shanghai had a DSQC679 crushed by a forklift. The robot was stuck in an “Auto” loop, but no manual adjustments could be made to the weld paths. Action: We provided a New Surplus 3HAC028357-001 unit. Since the FlexPendant is hot-pluggable (on systems equipped with a bypass plug), the customer swapped the unit without restarting the entire production line. Result: The line was back to full manual control in under 2 hours.
Case 2: Logistics Palletizing Cell Upgrade
Situation: A distribution center was upgrading their IRC5 software. Their older pendants (DSQC648) were showing significant lag and screen degradation. Task: They needed the more modern DSQC679 units to ensure smooth operation with newer versions of RobotWare 6.x. Action: We supplied five DSQC679 units. I guided their technician on how to transfer the custom “User Authorization System” (UAS) settings. Result: Operator efficiency increased due to the clearer display and more responsive joystick on the DSQC679.
Frequently Asked Questions (FAQ)
Q: Is the DSQC679 compatible with older S4C+ controllers? A: No. The DSQC679 is designed specifically for the IRC5 (M2004 and later). S4C+ controllers use the DSQC540 series pendants.
Q: What is the difference between 3HAC028357-001 and 3HAC12929-1? A: 3HAC028357-001 is the standard FlexPendant. Other part numbers may refer to different cable lengths or localized versions. The DSQC679 is generally universal as long as the controller is an IRC5.
Q: Why is my screen white or stuck on the “Connecting” message? A: This usually indicates a communication break between the pendant and the main computer (DSQC639 or similar) inside the controller. Check the cable pins for bends and ensure the controller’s main computer has successfully booted its LEDs.
Q: Does it include the cable? A: Most “New Surplus” units are sold as the pendant unit only. If you require the specific 3-meter, 7-meter, or 10-meter cable, please specify when ordering so we can include it.
Q: Can I replace just the joystick or the touch screen? A: Yes, these are modular components. However, for critical production environments, we recommend replacing the entire unit to ensure factory-level IP54 sealing and reliability.

