ABB DSQC 633A 3HAC031851-001 Serial Measurement Board

Product Description

The DSQC 633A (3HAC031851-001) is a high-precision Serial Measurement Board (SMB) engineered for ABB IRC5 robotic controller systems. This critical PC board serves as the primary interface for processing positional data from the robot's resolvers. By translating analog feedback into digital signals, the DSQC 633A (3HAC031851-001) allows the controller to maintain absolute positional awareness across multiple axes.

Equipped with 4 specialized serial ports, this SMB unit is capable of handling complex feedback loops for multi-axis configurations. Although the manufacturer has officially designated this specific revision as discontinued, it remains an indispensable component for the maintenance and repair of legacy IRC5 units, ensuring high-speed data transmission and synchronization between the manipulator and the control cabinet.

Technical Specifications

• Brand: ABB

• Model Designation: DSQC 633A

• Part Number: 3HAC031851-001

• Device Function: Serial Measurement Board (SMB)

• Interface: 4 Dedicated Serial Ports for Resolver Feedback

• System Architecture: IRC5 Robotic Controller

• Physical Weight: 0.50 kg (Approximately 1.10 lbs)

• Component Category: Robot Control PC Board

• Signal Processing: High-resolution Resolver-to-Digital conversion

• Hardware Status: Discontinued by Manufacturer (Available as high-quality spare)

Application & System Integration

The DSQC 633A (3HAC031851-001) is typically mounted within the base of the robot manipulator or inside the controller's measurement system sub-rack. It is a vital link for IRB series robots that require precise path following and repeatability. It supports the tracking of up to seven axes when utilized in standard configurations, making it suitable for complex welding and material handling cells.

FAQ

What are the symptoms of a faulty DSQC 633A SMB unit?

Common indicators that the DSQC 633A (3HAC031851-001) requires replacement include "Revolution counter lost" errors, SMB communication failures, or persistent resolver synchronization faults that cannot be cleared through standard calibration routines.

Does this board require a battery backup?

Yes, the DSQC 633A (3HAC031851-001) works in conjunction with a battery unit to maintain serial measurement data when the main power is disconnected. If the battery fails, the revolution counter data will be lost, requiring a re-synchronization of the robot axes.