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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, robust industrial design
Model designation
- FR = FREQROL series (Mitsubishi frequency inverter)
- SF = Spindle Frequency Inverter
- 2 = 200-V class
- 26K = Rated power 26 kW
Technical Data
| Feature | Wert | Note | Value |
|---|
| MITSUBISHI ELECTRIC | | | |
| Device type | | Belongs to the FREQROL FR-SF series | Spindle frequency inverter |
| Voltage class | | Stands for the 200 V class | 2 |
| Rated power | | Maximum motor power that the drive can continuously control | 26 kW |
| Input voltage (AC) | | Mains voltage (low voltage) | 3-phase, 200–230 V AC (50/60 Hz) |
| Output voltage (AC) | | Voltage for the spindle motor | Max. 200 V AC (variable) |
| Output current (rated) | | Typical for 26 kW at 200 V | approx. 120 A |
| Control method | | Precise speed and torque control | Digital Closed Loop, Vector Control, PWM Inverter |
| Status | | Device is no longer manufactured | Discontinued (EOL) |
| Weight | | High power class | approx. 54 kg (120 lbs) |
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 start, stop, reset, speed setpoint
- BR+ / BR-: Connection for external braking resistor
- PE: Protective earth connection
- LED/Digital display: Display of operating states and error codes
- Analog input 0–10 V / 4–20 mA: Speed setpoint
Control board / Assemblies
| Type (DE) | Spare Part (ENG) | Model designation | Quantity | Note |
|---|
| Control board | Main Control Board | SF-CA | 1 | Central logic and control board |
| Power supply | Power Supply | SF-PW (old) / SF-PW30 (new) | 1 | Supply of the control voltages |
| Communication board | Communication Board | SF-TL | optional | Interface board for data connection |
| Power section | Power Module | Power section 11K | 1 | IGBT output stage with DC link capacitors |
Alarms & Troubleshooting
| Code | Description | Typical finding | Check | Remedy |
|---|
| 01 | Overcurrent (OC) | Short circuit or motor overload | Check U/V/W | Eliminate motor cable/short circuit |
| 02 | Overvoltage (OV) | Regeneration during braking | Measure DC link voltage | Check braking resistor |
| 03 | Undervoltage (UV) | Mains voltage too low | Measure input voltage | Stabilize supply |
| 04 | Overheating (OH) | Fan or cooling channel dirty | Check airflow | Cleaning, replace fan |
| 05 | Overload (OL) | Permanent overload | Check current consumption | Reduce load or acceleration |
| 06 | Earth fault (GF) | Motor or cable faulty | Measure insulation | Eliminate fault |
| 07 | Control error | CPU or board defective | Perform self-test | Replace board |
| 08 | Communication error | Control cable interrupted | Check connection | Repair CN cable |
| 09 | Brake error | External resistor faulty | Check BR circuit | Replace component |
| 10 | Fan error | Fan failure | Visual inspection | Replace fan |
Typical applications
- Large machines and turning centers with high-performance spindles
- Milling centers and machine tools with heavy workpieces
- Processing systems with high torque requirements
- Spindle drives for continuous operation in series production
Service notes
- Clean fans and heat sinks regularly
- Check and replace capacitors and power modules preventively
- Back up and document control parameters
- Do not perform insulation measurement on the connected device
- Check earthing regularly and make it low-resistance
Repair description
- Input check: Visual inspection, measurement of mains voltage, insulation and DC link voltage
- Disassembly & cleaning: Removal of components, thorough cleaning, check for thermal or mechanical damage
- Analysis: Testing of power semiconductors, gate drivers, capacitors, control logic and fan unit
- Repair: Replacement of defective assemblies, rework of solder joints, preventive replacement of electrolytic capacitors and fans
- Testing & load test: Functional test on the test bench with reference spindle, monitoring of current, temperature and protection circuits
- Endurance test & completion: Continuous operation under realistic load for several hours, documentation of measurement results, final report with test mark