For your information
- 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: compact, forced-air cooled, service-friendly
Model designation
- FR = FREQROL series (Mitsubishi frequency inverter)
- SF = Spindle Frequency Inverter
- 2 = 200-V class
- 11K = Rated power 11 kW
Technical Data
| Feature | Value |
|---|
| Manufacturer | MITSUBISHI ELECTRIC |
| Device type | Spindle frequency inverter |
| Voltage class | 2 |
| Rated power | 11 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. 55 A |
| Control method | Digital Closed Loop, Vector Control, PWM Inverter |
| Application | High-speed spindles in CNC machines (Mazak, Traub, Mori Seiki etc.) |
| Status | Discontinued (EOL) |
Connections & Interfaces
- L1/L2/L3: Mains input (3~ 200–230 V)
- U/V/W: Output to spindle motor
- CN1/CN2: Control connections (RUN, STOP, ALARM RESET)
- BR+ / BR-: Connection for braking resistor
- PE: Protective earth connection
- LED/Display unit: Display of operating states and alarm codes
- Analog inputs: Speed setpoint 0–10 V or 4–20 mA
Control board / Assemblies
- Main control board: digital controller and logic unit
- Power module: IGBT power stage with DC link capacitors
- Gate driver board for switching transistors
- Rectifier and EMC filter
- Fan and thermal monitoring unit
Alarms & Troubleshooting
| Code | Bezeichnung | Typischer Befund | Prüfung | Abhilfe |
|---|
| 01 | Overcurrent (OC) | Short circuit in the motor or IGBT damage | Check output U/V/W | Eliminate short circuit, replace module |
| 02 | Overvoltage (OV) | Feedback from spindle | Measure DC link voltage | Check braking resistor |
| 03 | Undervoltage (UV) | Mains voltage too low | Check input voltage | Stabilize power supply |
| 04 | Overheating (OH) | Fan failure or contamination | Check airflow | Clean or replace fan |
| 05 | Overload (OL) | Continuously too high load current | Measure current consumption | Reduce load, check parameters |
| 06 | Earth fault (GF) | Insulation fault in the motor | Insulation measurement | Repair motor cable |
| 07 | CPU/Board error | Control board defective | Self-test/Reset | Replace board |
| 08 | Communication error | CN line interrupted | Check cable/connector | Repair connection |
| 09 | Brake fault | External resistor defective | Check resistor | Replace |
| 10 | Fan error | Stoppage or blockage | Visual inspection | Replace fan |
Typical applications
- CNC milling machines and turning centers
- High-speed spindles up to 400 Hz
- Precision machines in tool and mold making
- Production systems with high torque requirements
Service notes
- Regular cleaning of fans, filters and cooling fins
- Replace capacitors and fans every 5–7 years
- Save parameters before making changes
- No insulation measurement when installed
- Check grounding and potential equalization regularly
Repair description
- Input check: Visual inspection, measurement of input and output voltages, insulation test
- Disassembly & cleaning: Removal of assemblies, removal of dust and oxidation, visual inspection for thermal damage
- Analysis: Testing of the IGBT output stage, capacitors, gate driver, control logic and fan unit
- Repair: Replacement of defective components, rework of solder joints, preventive replacement of electrolytic capacitors and fans
- Testing & load test: Functional test on the test bench with spindle motor, control of current and voltage values, evaluation of the protection circuits
- Endurance test & conclusion: Continuous operation under realistic load, thermal monitoring, final report with measurement results and test mark
We Verify Your Drives and Electronic Components for Authenticity
Authenticity Check for Drives & Electronic Components: Confidence Before You Invest
Prevent failures caused by hidden counterfeits.
With our professional authenticity verification, you ensure
that your drives and system components truly meet original manufacturer quality before being installed in critical processes.
Why Authenticity Check Is Essential Today
The market for industrial drives, motors, and control components is globally interconnected. Components are traded through various channels, new, used, refurbished, or from warehouse stock.
As shown in our article Solutions Against Counterfeit Drive Components, products with unclear origin or altered substance repeatedly enter industrial supply chains.
For buyers, it is often not clearly recognizable:
- Whether it is an original product from the manufacturer
- Whether the device has been opened or technically modified
- Whether serial numbers and nameplates are authentic
- Whether all components correspond to the original condition
Especially in production-critical systems, unverified components can lead to downtime or consequential damage.
Professional authenticity verification provides clarity before the component is installed or resold.
What Exactly Is Checked During Authenticity Check?
Inspection of Nameplate and Serial Number
We compare serial numbers, production markings, and device designations with our technical reference data and manufacturer standards, checking them for plausibility and irregularities.
Visual and Mechanical Inspection
Our technicians professionally open the device and examine housing, screws, seals, connectors, and internal assemblies for signs of manipulation, replacement traces, or deviations from the original condition.
Electrical Measurements and Functional Testing
We test power and control units on our test benches under realistic conditions and verify whether the technical parameters comply with manufacturer specifications.
Software and Parameter Analysis
By reading firmware versions, parameters, and internal device data, we identify modifications, non-original configurations, or inconsistent software versions.
Comprehensive Technical Evaluation
Based on all inspections, we prepare a well-founded overall assessment, transparently document the device condition, and provide you with a clear recommendation for further use, repair, or replacement.
Who Our Authenticity Check Is the Right Choice For
Maintenance Personnel and Technicians
Safety before installation: verification of drives and motors to prevent unplanned downtime.
Purchasing and Procurement
Protection against incorrect purchases through technical inspection of serial numbers, condition, and authenticity.
Quality Management
Documented test results for internal quality assurance and audit purposes.
Machine and Plant Manufacturers
Reliable verification of components to safeguard customer projects and contractual commitments.
Distributors and Resellers
Transparent evaluation of device condition to enable trustworthy resale.
Learn More About Manipulation and Counterfeit Electronic Components in Our Blogs
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