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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 Mitsubishi Spindle Drives
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
- Device category: Spindle Frequency Inverter (Transistor Inverter)
- Series/Class: FREQROL-SF, 200-V class
- Design: Air-cooled, service-friendly, durable industrial design
Model designation
- FR = FREQROL series (Mitsubishi frequency inverter)
- SF = Spindle Frequency Inverter
- 2 = 200-V class
- 18.5K = Rated power 18.5 kW
Technical Data
| Feature | Value |
|---|
| Manufacturer | MITSUBISHI ELECTRIC |
| Device type | Spindle frequency inverter |
| Voltage class | 2 |
| Rated power | 18.5 kW |
| Input voltage (AC) | 3-phase, 200–230 V AC (50/60 Hz) |
| Output voltage (AC) | Max. 200 V AC (variable) |
| Output current (rated) | approx. 85 A |
| Control method | Digital Closed Loop, Vector Control, PWM Inverter |
| Status | Discontinued (EOL) |
| Weight | approx. 48 kg |
Connections & Interfaces
- L1/L2/L3: Mains input (3~ 200–230 V)
- U/V/W: Motor output to the spindle motor
- CN1/CN2: Control connections for RUN, STOP, RESET and speed setpoint
- BR+ / BR-: Connection for braking resistor
- PE: Protective earth connection
- LED/Digital display: Display of operating states and alarm codes
- Analog input 0–10 V / 4–20 mA: Speed setpoint
Control board / Assemblies
| Art (DE) | Spare Part (ENG) | Modellbezeichnung | Menge | Hinweis |
|---|
| Control board | Main Control Board | SF-CA | 1 | Controller and logic unit |
| Power supply | Power Supply | SF-PW (old) / SF-PW30 (new) | 1 | Supply of control voltages |
| Communication board | Communication Board | SF-TL | optional | Optional data interface |
| Power module | Power Module | Leistungsteil 11K | 1 | IGBT output stage with DC link capacitors |
Alarms & Troubleshooting
| Code | Bezeichnung | Typischer Befund | Prüfung | Abhilfe |
|---|
| 01 | Overcurrent (OC) | Short circuit or motor overload | Check U/V/W | Eliminate short circuit |
| 02 | Overvoltage (OV) | High regeneration during braking | Measure DC link voltage | Check braking resistor |
| 03 | Undervoltage (UV) | Low mains voltage | Measure input voltage | Check supply |
| 04 | Overheating (OH) | Fan defective or dusty | Check airflow | Cleaning or fan replacement |
| 05 | Overload (OL) | Excessive continuous load | Check current consumption | Reduce load or acceleration |
| 06 | Ground fault (GF) | Insulation fault motor cable | Measure insulation | Eliminate source of error |
| 07 | Control error | CPU/Logic error | Perform self-test | Replace control board |
| 08 | Communication error | Connection interrupted | Check CN cable | Repair line |
| 09 | Brake error | Error in the brake circuit | Check BR line | Replace resistor |
| 10 | Fan error | Fan failure | Visual inspection | Replace fan |
Typical applications
- High-speed spindles in CNC turning and milling centers
- Machine tools in continuous operation
- Precision machines in mold making
- Production plants with high torque requirements
Service notes
- Clean fans and cooling fins regularly
- Check capacitors and IGBT modules preventively
- Back up and document control parameters
- Do not perform insulation measurement on the installed device
- Regularly check earthing connections
Repair description
- Input check: Visual inspection, voltage and insulation test, measurement of the DC link voltage
- Disassembly & cleaning: Removal of the assemblies, cleaning of dust and oil residues
- Analysis: Checking the IGBT power unit, DC link capacitors, control board and gate driver
- Repair: Replacement of defective assemblies, soldering of critical connections, preventive replacement of electrolytic capacitors and fans
- Testing & load test: Functional test with reference spindle, monitoring of temperature, current consumption and alarm triggering
- Endurance test & completion: Several hours of continuous operation under load, final report with measurement results and release for return delivery