ABB 3HAC14550-408A DSQC619 Single‑Axis Servo Drive Unit (Hardware Revision 08A) for ABB IRC5 Industrial Robot Controller

3HAC14550‑4 revision 08A (DSQC619) is ABB latest‑revision single‑axis servo drive unit for IRC5 robot controller. It implements power amplification and torque closed‑loop control for robot joint motors via fibre‑optic communication with axis‑computer hardware. This hardware is manufacturer‑discontinued, supplied only as maintenance spare‑part.

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Description

. Basic Information

表格
Item Content
Model 3HAC14550‑4, Rev:08A (DSQC619)
Manufacturer ABB Robotics
Series IRC5 M2004 Robot Controller System
Product Type Single‑axis Servo Drive Power Unit
Mounting Plug‑in installation inside IRC5 drive rack
Power supply Common internal DC‑link bus + 24 VDC auxiliary control power
Status indicator Front‑panel multi‑LED for power, run, fault code indication
Warranty 12‑month for genuine spare parts
BOM Full‑Name 3HAC14550‑4 08A, DSQC619 Single‑Axis Servo Drive Unit for ABB IRC5 Robot Controller
BOM Short‑Name 3HAC14550‑4‑08A, IRC5 DSQC619 Robot Servo Drive Rev 08A

2. Electrical & Interface Specifications

  • Function: IGBT‑based PWM power amplification, torque closed‑loop control for one robot joint permanent‑magnet servo motor
  • Communication: Fibre‑optic SERCOS‑like optical link to Axis Computer Board (3HAC13389‑2), receives motion set‑points, transmits status and fault feedback
  • Feedback interface: Process resolver / encoder position‑speed feedback signals from robot motor
  • Internal DC‑bus: Shared DC‑link from IRC5 rectifier unit
  • Integrated protection: Over‑current, over‑voltage, under‑voltage, IGBT fault, over‑temperature, motor phase loss monitoring
  • Revision 08A features: Updated component layout, improved thermal design, enhanced over‑current protection compared to older revisions (04B,05A,06A,07A); fixes known early‑hardware failure modes
  • No external field‑bus interface; only works inside IRC5 closed robot drive system

3. Environmental Conditions

  • Operating temperature: 0 ℃ ~ +55 ℃, inside robot controller cabinet
  • Storage temperature: −40 ℃ ~ +85 ℃
  • Relative humidity: 5‑95 % RH, non‑condensing
  • Approvals: CE, UL, compliant with industrial robot safety standards IEC 61010‑1
  • Enclosure rating: IP00; protected within IRC5 cabinet
  • Cooling: Forced air cooling by controller rack fan
  • Weight: Approx.1.3 kg

4. Main Functions

  1. Converts DC‑link bus voltage to three‑phase AC output to drive single robot joint motor, executes torque‑loop control according to commands from axis‑computer board.
  2. Reads motor resolver/encoder feedback, reports actual position, speed and torque back to controller via fibre‑optic channel.
  3. Triggers safety stop and reports fault codes when detecting over‑current, over‑temperature and other drive/motor failures.
  4. Revision 08A is drop‑in replacement for earlier hardware revisions (04B/05A/06A/07A) of 3HAC14550‑4; no mechanical modification required, but RobotWare firmware compatibility must be validated before commissioning.
  5. Lifecycle status: Obsolete, ABB ceased new production; only available as maintenance spare‑part for existing installed robot fleets.

5. Typical Applications

  1. ABB IRC5 M2004 controller for IRB‑series robots (IRB1200, IRB2600, IRB4600, IRB6700 etc.) for welding, handling, assembly, painting production lines.
  2. Spare‑part replacement for defective DSQC619 drive units on operational robot systems.
Related drive revision comparison

|Part‑No & Revision|Description|Remark|

|—|—|—|

|3HAC14550‑4 04B|Older hardware revision|Field proven, obsolete|

|3HAC14550‑4 08A|Latest revision of DSQC619 drive|Improved reliability, drop‑in compatible replacement|

6. Important Notes

  1. Dedicated exclusively for ABB IRC5 robot system, cannot be used as general‑purpose servo drive for third‑party motors or PLC systems.
  2. High‑voltage DC‑bus hazard; replacement work must be performed by ABB‑trained qualified personnel.
  3. Electrostatic‑sensitive assembly; strict ESD protection required during handling and installation.
  4. Verify RobotWare firmware compatibility before installation of Rev.08A; firmware mismatch can lead to abnormal motion or hardware damage.
  5. Fault diagnosis and drive configuration must use RobotStudio software.
  6. Use full ordering part‑number 3HAC14550‑4 08A for spare‑part procurement.

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