Drive Amplifier
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- We offer for this displayed device sale, exchange and repair services.
- Prices for Servo-/Spindle Drives Power Supplies are standard prices for standard repair
- Devices for sell or exchange, was preventively overhauled in our workshop.
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Detailed information about Yaskawa SGDB Servopacks
We offer serial repairs for this product series
- Repair of many electronic assemblies according to standardized repair procedures with documentation.
- A larger repair capacity is possible for the same or similar orders
- Target group: machine manufacturers, service companies and distributors
Access to years of experience, specialists and equipment.
Find out more about our series repairs
Overview
The Yaskawa SGDB-03VNY1 is an industrial AC servo amplifier of the Σ series (SGDB series). The VNY1 variant combines a 200 V supply ("V"), a MECHATROLINK bus interface ("N"), and an additional function option ("Y1"). With an output power of 0.3 kW, the amplifier is ideally suited for compact CNC axes, precise positioning tasks, handling modules, and automated manufacturing systems.
Overview
- Device category: AC Servo Amplifier
- Series: SGDB (Σ Series)
- Design: robust, convection-cooled unit
Model Designation
- (according to SGDB model code table)
- SGDB – Σ Series Servopack
- 03 – Power size 0.3 kW (0.4 HP)
- V – Supply 200 V (Region/Variant identification)
- N – Command Interface Type MECHATROLINK
- Y1 – additional factory option / special function (e.g., firmware adjustment / individual option – varies depending on the production series)
Technical Data
| Feature | Value |
|---|
| Input voltage | 3~ 200–230 V AC |
| Mains frequency | 50/60 Hz |
| Input current | 5.0 A |
| Output voltage | 0–230 V AC |
| Output current | 3.0 A |
| Output power | 0.3 kW (0.4 HP) |
| Phases | 3 |
| Communication interface | MECHATROLINK (N-Type) |
| Cooling | Convection cooling |
| Protection class | IP1X |
| Weight/Dimensions | n. a. |
Connections & Interfaces
- L1 / L2 / L3 – AC Mains Input 200–230 V
- U / V / W – Motor output to 0.3 kW class Sigma motors
- CN1 – Control signals (Inputs/Outputs, Enable, Alarms, Reference)
- CN2 – Encoder connection (Incremental encoder)
- MECHATROLINK Port (N-Interface) – digital communication with the CNC/Controller
- BR+ / BR– – Brake resistor connection
- PE – Grounding point
- LED/7-Segment Display – Diagnostics and error messages
Control Board / Assemblies
| Type | Designation on Board | Quantity | Note |
|---|
| Control Board | SGDB-CAN(VY1) – depending on revision | 1 | Contains MECHATROLINK interface, controller, optocouplers |
| Power Section | n. a. | 1 | Power output stage with IGBT, rectifier, driver |
Alarms & Troubleshooting
| Code | Designation | Typical Finding | Check | Remedy |
|---|
| A.10 | Overcurrent / Overheating | Short circuit U/V/W, IGBT error | Isolation, IGBT test | Repair power section |
| A.30 | Regeneration Error | RB open / defective | Check RB resistor | Connect/replace RB |
| A.32 | Regeneration Overload | RB too small, many stops | Check Reg energy | Dimension RB larger |
| A.40 | Overvoltage | Mains > 230 V | Measure input voltage | Stabilize supply |
| A.41 | Undervoltage | Voltage dip | Test mains load | Check power feed |
| A.51 | Overspeed | Encoder/Phase error | Phase sequence & Encoder | Correct wiring |
| A.71 | Short-term Overload | Shock load, blockage | Check mechanics | Reduce load |
| A.72 | Continuous Overload | Axis profile too aggressive | Temperature/Current | Soften profile |
| A.81 | Encoder Backup Error | Absolute data lost | Battery/Cable | Replace battery |
| A.84 | Encoder Data Error | Encoder damaged | Signal analysis | Replace encoder |
| A.b3 | Current Detection Error | Sensor error | Check current sensor | Repair board |
Typical Applications
- Compact CNC axes (X/Y/Z)
- Handling and Pick & Place modules
- Assembly and testing automation
- Transport and feeding systems
- Axes with digital MECHATROLINK connectivity
Service Notes
- Keep ventilation slots clean
- Regularly check power section and electrolytic capacitors
- Terminate MECHATROLINK cabling correctly
- Ensure low-resistance grounding and proper shielding
- Back up parameters & bus configuration
- Never check encoder and control lines with a Megger
Repair Description
- Initial inspection: Visual check, insulation measurement, DC bus measurement, MECHATROLINK test
- Disassembly & Cleaning: Open housing, remove dust/oil, replace thermal pads
- Analysis: Check control board (CANV/Variant), optocouplers, intermediate voltage, driver stages, IGBT module
- Repair: Replacement of defective transistors, driver ICs, capacitors, resoldering critical areas
- Function test: Test run with 0.3 kW motor, monitoring of current, temperature, regeneration, communication
- Long-term test: Several hours of continuous operation under load & documentation of all measured values