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-05VN is a powerful and proven servo amplifier from the Σ series for 200 V servo motors. The VN version combines a 200 V supply ('V') with a MECHATROLINK interface ('N'), making it ideally suited for modern CNC and automation controls. With an output power of 0.45 kW, the amplifier is frequently used in machine tools, handling systems, and precise positioning axes.
Overview
- Device category: AC Servo Amplifier (Servopack)
- Series/Class: SGDB (Σ Series), 200 V Class
- Design: compact, fan-assisted, durable industrial design
Model Designation
- SGDB – Σ Servopack Series
- 05 – 0.5 kW power size (actual motor power according to nameplate 0.45 kW)
- V – 200 V supply (region/variant identifier)
- N – Command Interface: MECHATROLINK (digital bus communication)
- (Option blank) – no additional option such as “P = duct ventilation”
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 | 3.8 A |
| Output Power | 0.45 kW (0.60 HP) |
| Phases | 3 |
| Interface | MECHATROLINK (N-Type) |
| Cooling | Convection/Fan cooling |
| Protection Class | IP1X |
| Weight/Dimensions | n. a. |
Connections & Interfaces
- L1 / L2 / L3 – Three-phase mains input
- U / V / W – Motor output to Sigma servo motors
- CN1 – Control inputs (Enable, Alarms, Reference, I/O)
- CN2 – Encoder connection (Incremental encoder)
- MECHATROLINK Port (N-Type) – bus-based communication to CNC/Controller
- BR+ / BR– – Connection for external braking resistor
- PE – Protective Earth
- LED/7-Segment Display – Diagnostics, Status, Error codes
Control Board / Modules
| Type (EN) | Designation on Board | Quantity | Note |
|---|
| Control Board | SGDB-CANV | 1 | Main control board including MECHATROLINK interface |
| Power Section | n. a. | 1 | Power output stage (IGBT), rectifier, driver modules |
Alarms & Troubleshooting
| Code | Description | Typical Finding | Check | Remedy |
|---|
| A.10 | Overcurrent / Overheating | Short circuit motor cable, defective IGBT | Insulation, IGBT test, Temperature | Repair power section |
| A.30 | Regeneration Error | Braking resistor open or incorrect | Check RB circuit | Connect/replace RB correctly |
| A.32 | Regeneration Overload | RB power too low or many stops | Measure Reg energy | Larger RB or adjust profile |
| A.40 | Overvoltage | Mains > 230 V, excessive recuperation | Measure mains | Stabilize supply |
| A.41 | Undervoltage | Voltage drop | Measure mains under load | Check supply line, transformer |
| A.51 | Overspeed | Encoder error, winding sequence incorrect | Check U-V-W, test encoder | Correct wiring |
| A.71 | Short-term Overload | Shock load, blockage | Test mechanics | Reduce load |
| A.72 | Continuous Overload | Axis profile too aggressive | Temperature/Current trend | Soften profile |
| A.81 | Encoder Backup Error | Absolute data lost | Battery/Cable | Replace battery, homing run |
| A.84 | Encoder Data Error | Signal unstable, encoder damaged | Scope, Cable | Replace encoder |
| A.b3 | Current Detection Error | Current sensor defective | Current sensor/Gate driver | Repair main board |
Typical Applications
- CNC feed axes, tool magazines
- Handling systems with digital bus interfaces
- Compact robot axes
- Positioning modules in industrial manufacturing plants
Service Notes
- Keep fans and cooling slots clean
- Regularly check or preemptively replace power module and capacitors (Elcos)
- Check MECHATROLINK communication for correct termination/cabling
- Ensure low-resistance and interference-proof grounding
- Back up parameters and bus configuration
- Never check encoder/control signals with a Megger
Repair Description
- Input check: Visual inspection, insulation measurement, DC bus measurement, MECHATROLINK communication test
- Disassembly & Cleaning: Remove cover, remove dust/oil, renew thermal pads
- Analysis: Check SGDB-CANV board (bus interface, optocouplers, drivers), test IGBT module, rectifier, capacitors
- Repair: Replacement of defective components, resoldering thermally stressed areas, preventive replacement of critical components
- Function Test: Test run with reference motor (0.45–0.6 kW), monitoring of current, temperature, regeneration, alarm behavior
- Long-term Test & Conclusion: Several hours of continuous operation, complete documentation of all measured values and final inspection