Description
The ABB DSQC604 (Part Number: 3HAC12928-1) is a critical power conversion module within the IRC5 robot controller architecture. Specifically, it is a Rectifier Unit (sometimes referred to as the “Mains Input” or “Power Supply Unit”) that converts incoming AC line voltage into a stabilized DC bus voltage to power the individual drive modules for the robot’s axes.
Product Parameters (Datasheet)
- Model Number: DSQC604
- Part Number: 3HAC12928-1
- Input Voltage: 3-phase, 200–600 V AC (Wide input range)
- Output Voltage: Approx. 260–820 V DC (Link voltage proportional to input)
- Frequency: 50/60 Hz
- System Compatibility: ABB IRC5 Controller (M2000, M2004 versions)
- Cooling: Integrated heatsink for natural or forced convection within the drive rack
- Indicators: Front-panel LEDs for DC Link status and fault diagnostics
ABB DSQC604 3HAC12928
ABB DSQC604 3HAC12928
ABB DSQC604 3HAC12928
Country of Origin
This robot power component is engineered and manufactured by ABB in Sweden, maintaining strict quality controls for the global robotics market.
Application Fields
The DSQC604 is the primary power source for various ABB industrial robot models controlled by the IRC5 system:
- Automotive Manufacturing: Powering high-speed spot welding and painting robots (e.g., IRB 6640).
- Material Handling: Supporting palletizing and heavy-lift robots (e.g., IRB 7600).
- Electronics Assembly: Providing clean power for high-precision pick-and-place units (e.g., IRB 1600).
- Foundries: Operating in harsh environments for casting and forging applications.
- Packaging: Running high-cycle-rate FlexPicker systems.
Product Usage Instructions
- Chassis Installation: The unit must be mounted in the “Drive Module” rack of the IRC5 cabinet. Ensure the mounting screws are tight to provide a solid ground path.
- DC Bus Connection: Use the specialized DC bus bars or cables to link the output of the DSQC604 to the adjacent DSQC series drive units.
- Mains Input: Connect the 3-phase AC supply through the designated filter and circuit breaker. Warning: High leakage current is present; ensure the protective earth (PE) is connected.
- Communication: Connect the internal communication cable to the axis computer or the main computer to allow the controller to monitor the power supply health.
- Brake Resistor: Ensure the external brake resistor is correctly wired to the rectifier if your application involves high-inertia decelerations to prevent overvoltage on the DC link.
Product Technical Description
Technically, the DSQC604 is a non-regulated or semi-regulated rectifier bridge. It takes the varying plant AC power and creates a high-voltage DC reservoir. This DC “Link” is what the individual axis drives (like the DSQC663) use to synthesize the AC motor power. The DSQC604 is designed with robust filtering to protect the robot’s electronics from voltage spikes and harmonic distortion. It also features “Soft Start” circuitry to limit the inrush current when the controller is first powered up, preventing nuisance tripping of the facility’s main breakers.
Q&A (Common Questions)
Q: My robot has a “DC Link Undervoltage” fault. Is the DSQC604 at fault? A: It is a strong possibility. Check the input AC phases first. If AC is present but the DC output is low or zero, the DSQC604 internal bridge or soft-start circuit may have failed.
Q: Can I use a DSQC604 to replace a DSQC406? A: No. The DSQC406 belongs to the older S4C+ controller system. The DSQC604 is specifically designed for the IRC5 (M2004) architecture and is not physically or electrically backward compatible.
Q: Does the DSQC604 have internal fuses? A: Most versions rely on external branch circuit protection and internal electronic protection. However, some revisions may have internal fusable links. Always consult the specific wiring diagram for your cabinet version.
Q: Why is there a small delay before the “DC OK” LED turns on? A: This is normal. It is the result of the internal “Pre-charge” circuit slowly filling the large capacitors to prevent a massive surge of current.
Similar Model Recommendations
- ABB DSQC663 (Single/Dual Drive Unit)
- ABB DSQC664 (Drive Unit)
- ABB 3HAC14549-1 (Alternate rectifier assembly)
- ABB DSQC601 (Power Supply Unit)
- ABB 3HAC12927-1 (Related IRC5 drive component)
For technical support or to request a quote for the ABB DSQC604, please contact our robotics spare parts division.
