Description
🔹 Product Overview
The Yaskawa CSRA-SDA01H01A is an inverter unit used in the YRC1000 robot controller system. It is associated with small-capacity YRC1000 configurations and includes the CSRA-SDCA01AA servo control board as part of the inverter-unit assembly.
The inverter section converts DC power supplied by the controller’s converter into three-phase motor power for the robot servo motors. The servo control board manages servo operation and communicates with the converter, inverter, encoder system, brake circuits, and related controller components.
For YRC1000 maintenance, the CSRA-SDA01H01A should be distinguished from the separate JANCD-AIO0□-E general-purpose I/O board and JANCD-ASF01-E safety circuit board. These boards are mounted within the same inverter-unit area but are separate assemblies.
⚙️ Key Features
- Brand: Yaskawa / Motoman
- Model: CSRA-SDA01H01A
- System: YRC1000 Robot Controller
- Unit Type: Inverter Unit
- Integrated Control Board: CSRA-SDCA01AA Servo Control Board
- Application: Robot servo motor control
- Motor Outputs: Multiple servo motor power outputs
- External Axis Support: Interfaces for external-axis inverter connections
- Control Functions: Servo control, inverter communication, brake-related control and feedback processing
- Typical Robot Families: GP7, AR900, GP8 and AR700 configurations
- Installation: YRC1000 controller cabinet
- Condition: New, according to the supplied listing
📋 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | Yaskawa |
| Model | CSRA-SDA01H01A |
| Product Series | YRC1000 |
| Product Name | Inverter Unit with Servo Control Board |
| Unit Type | Robot Servo Inverter |
| Servo Control Board | CSRA-SDCA01AA |
| Controller | YRC1000 |
| Compatible Robot Examples | GP7, AR900, GP8, AR700 |
| Motor Interface | Multiple servo motor power outputs |
| External Axis Interface | Up to 3 external-axis inverter interfaces, configuration dependent |
| Installation | YRC1000 Controller Cabinet |
| Condition | New |
| Dimensions | Configuration dependent; verify against cabinet assembly |
| Weight | Verify against actual unit |
| Input Power | Dependent on YRC1000 converter/controller configuration |
🤖 Servo Control & Inverter Architecture
The CSRA-SDA01H01A forms part of the YRC1000 servo power architecture.
A simplified control path is:
YRC1000 CPU → Servo Control Board → Inverter → Servo Motors
The inverter receives DC power from the converter and generates the required three-phase motor power. The integrated CSRA-SDCA01AA servo control board coordinates servo operation and interfaces with the wider controller system.
The servo control board is responsible for control of the manipulator’s servo motors and can also support external-axis servo operation. It interfaces with encoder signals, brake circuits, converter control and inverter communication.
🔌 Interface & Connection Architecture
The inverter assembly includes dedicated connections for the servo control board, motor power, external axes and related power/control circuits.
Important interface areas include:
- Servo control board connection
- Motor power outputs
- Motor frame-ground connection
- DC power input from the converter
- External-axis power and communication interfaces
- Servo control communication
- Brake-related connections
The exact connector arrangement depends on the YRC1000 cabinet configuration. Connector numbers and wiring should be matched against the controller’s electrical drawings before replacement.
🛡️ Safety & Related Boards
The YRC1000 inverter section works together with separate control and safety assemblies.
The controller architecture identifies:
- CSRA-SDA01H01A – Inverter unit
- CSRA-SDCA01AA – Servo control board
- JANCD-AIO0□-E – General-purpose I/O board
- JANCD-ASF01-E – Safety circuit board
- JZNC-ARK5□-□E – CPU unit
- CSRA-CPS01KA – Control power supply unit
The safety circuit board and general-purpose I/O board are mounted in the same inverter-unit area but are not the same board as the CSRA-SDA01H01A. This distinction is important when ordering replacement parts.
🏭 Typical Applications
The CSRA-SDA01H01A is intended for YRC1000 robot controller maintenance and repair applications, including:
- Yaskawa Motoman industrial robots
- GP-series robot systems
- AR-series robot systems
- Robot servo power control
- Multi-axis robotic motion
- External-axis robot applications
- Factory automation
- Welding and material-handling robots
- Semiconductor and precision automation equipment
- Legacy YRC1000 controller refurbishment
For a replacement application, the controller model and robot configuration should be confirmed before installation.
🔧 Installation & Maintenance
Because the CSRA-SDA01H01A is part of the robot’s high-energy servo power system, replacement should only be performed by qualified maintenance personnel.
Recommended Replacement Procedure
- Record the existing inverter-unit model and revision.
- Record controller and robot model information.
- Shut down the robot using the approved Yaskawa procedure.
- Turn OFF the controller power.
- Wait at least 5 minutes after power-off before board or inverter replacement.
- Confirm that the converter and inverter charge indicators are OFF.
- Disconnect cables only after confirming the power circuit is discharged.
- Compare connectors, mounting points and board markings with the replacement unit.
- Install the replacement inverter assembly correctly.
- Reconnect servo, motor, encoder, brake and external-axis connections.
- Check grounding and cable routing.
- Restore power and perform controller diagnostics.
- Verify servo readiness before enabling robot motion.
- Perform controlled axis operation and alarm checks.
Yaskawa’s YRC1000 maintenance documentation specifically warns about residual capacitor voltage and requires waiting at least five minutes after power-off before replacement work.
🛠️ Troubleshooting Guide
Robot does not enter servo-ready condition
Check the inverter status, servo control communication, safety circuit, emergency-stop chain and controller alarms.
Inverter alarm appears after replacement
Confirm that the replacement unit matches the original CSRA-SDA01H01A configuration. Check all connectors, grounding, control communication and motor connections.
Motor does not rotate
Check the servo enable condition, motor power connection, encoder feedback, brake release circuit and relevant controller alarms.
Encoder feedback error
Inspect the encoder connectors and cable routing. A loose encoder connection can prevent correct servo initialization.
External axis does not operate
Check the external-axis inverter interface, external-axis power supply and configuration parameters. The YRC1000 system supports dedicated external-axis interfaces on the servo control architecture.
Repeated inverter or overcurrent alarm
Inspect motor wiring, motor insulation, mechanical loading, grounding and inverter status. Do not repeatedly reset an unexplained power-stage fault.
❓ FAQ
Q: What is CSRA-SDA01H01A?
A: It is a Yaskawa YRC1000 inverter unit used for servo motor power and control. The assembly includes the CSRA-SDCA01AA servo control board.
Q: Is CSRA-SDA01H01A the same as the YRC1000 I/O board?
A: No. The general-purpose I/O board is identified as JANCD-AIO0□-E. CSRA-SDA01H01A is the inverter unit.
Q: Is the safety board included?
A: The YRC1000 inverter area also contains a separate JANCD-ASF01-E safety circuit board. Whether that board is included in a particular sale must be verified from the actual listing and physical assembly.
Q: Which robots use CSRA-SDA01H01A?
A: YRC1000 documentation identifies CSRA-SDA01H01A for small-capacity configurations including GP7, AR900, GP8 and AR700. Exact compatibility should be checked against the complete robot/controller configuration.
Q: What is the CSRA-SDCA01AA?
A: It is the servo control board associated with the CSRA-SDA01H01A inverter unit. It manages servo motors and interfaces with converter, encoder, brake and inverter functions.
Q: Can I replace only the inverter unit?
A: Replacement depends on the controller configuration and failure location. Verify the complete model, revision, connectors and integrated servo control board before ordering.
Q: Is this a safety circuit board?
A: No. The dedicated YRC1000 safety circuit board is JANCD-ASF01-E.
Q: What should be checked before ordering?
A: Match CSRA-SDA01H01A, board/unit revision, YRC1000 controller configuration, robot model, connector arrangement and included servo control board.
🔗 Recommended Related Yaskawa Models & Parts
- Yaskawa CSRA-SDCA01AA – Servo Control Board
- Yaskawa JANCD-ASF01-E – Safety Circuit Board
- Yaskawa JANCD-AIO01-E – General-Purpose I/O Board
- Yaskawa JZNC-ARK01-E – YRC1000 CPU Unit
- Yaskawa CSRA-CPS01KA – Control Power Supply Unit
- Yaskawa CSRA-CV05A00A – Converter Unit
- Yaskawa JZRCR-APU01-1 – Power Supply Contactor Unit
- Yaskawa CSRA-SDA02H01A – YRC1000 Inverter Unit
- Yaskawa IM-YE250/5-80P – Safety Terminal Block
- Yaskawa JZRCR-APP01-1 – Programming Pendant Assembly
📦 Spare-Part Recommendation
For YRC1000 maintenance, the CSRA-SDA01H01A should be treated as a configuration-specific robot inverter assembly. Do not select a replacement solely from the base model number.
Before purchasing, compare the CSRA-SDA01H01A designation, complete inverter label, CSRA-SDCA01AA servo control board, robot model, YRC1000 controller configuration, connector arrangement and revision markings.
For production robot systems, keeping a verified replacement inverter and associated servo-control components in spare inventory can significantly reduce recovery time after a servo power-stage or inverter-control failure.
