ABB 6369901-104 DSQC 104 Resolver Interface Board for ABB Robots

Product Description

The 6369901-104, also known as the DSQC104, is a resolver-to-digital conversion board used in ABB industrial robot controllers. It interfaces directly with motor-mounted resolvers to convert analog sine/cosine feedback signals into precise digital position data for the motion control system. This enables high-accuracy joint positioning and dynamic trajectory tracking in robotic arms.

Mounted inside the robot’s drive or controller cabinet, the DSQC104 ensures reliable signal conditioning, noise rejection, and real-time angle calculation—critical for maintaining repeatability in welding, assembly, and material handling applications.

Technical Specifications  

• Manufacturer: ABB

• Part Number: 6369901-104 (DSQC104)

• Function: Resolver signal interface / R/D converter

• Compatible Systems: ABB IRC5 and select legacy robot controllers

• Input Signals: Resolver sine, cosine, and reference excitation (typically 4–10 kHz, 2–12 Vrms)

• Output Interface: Digital position data via internal backplane bus to motion CPU

• Dimensions: 254 mm × 254 mm × 25 mm (10.0" × 10.0" × 1.0")

• Weight: 0.4 kg (1 lb 15 oz)

• Mounting: Panel or subrack mounted with standard hardware

• Operating Environment: Industrial, non-condensing, typical controller cabinet conditions

Typical Applications  

• Joint feedback processing in 6-axis articulated robots

• Retrofit or repair of resolver-based servo systems

• Replacement for failed DSQC104 units in production cells

FAQ
Q: Is this board compatible with encoder-based motors?
A: No—the DSQC104 is designed exclusively for resolver feedback. Encoder-based axes use different interface boards (e.g., DSQC534 or DSQC633).

Q: Can it be calibrated in the field?
A: Basic offset calibration is handled automatically by the robot controller during startup. Full resolver alignment requires ABB service tools and mechanical zeroing.

Q: What happens if the DSQC104 fails?
A: The affected axis typically reports a “Resolver Fault” or “Position Error,” and motion is disabled for safety. Replacement restores full functionality.