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Mitsubishi MDS-B-V2-2020 Servo Drive Unit

Mitsubishi MDS-B-V2-2020 Servo Drive Unit

Mitsubishi MDS-B-V2-2020 Servo Drive Unit

Mitsubishi MDS-B-V2-2020 Servo Drive Unit

Mitsubishi MDS-B-V2-2020 Servo Drive Unit

Mitsubishi MDS-B-V2-2020 Servo Drive Unit

Technical Datasheet ▼

Brand	Mitsubishi
Type	Servo Drive Unit
Model	MDS-B-V2-2020
Country Of Origin	JAPAN
Input Current	28A
Input Current AC	0.2A
Input Frequency	50/60HZ
Input Voltage AC	200/200-230V
Input Voltage DC	270-311V
Output	3AC
Output Current	13A/ 13A
Year Of Manufacture	98/04

Note: The provided datasheet values may differ from the actual device.

Expand Datasheet

Repair for Mitsubishi MDS-B-V2-2020

Servo Drive Unit

ID: 39688

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Repair of Mitsubishi Drive Electronics

MDS-A MDS-B MDS-C MDS-CH
MDS-D MDS-DH MDS-D2

Mitsubishi Drive Electronics

We test and repair Mitsubishi AC power supplies as well as spindle and servo modules.
Additionally, we offer service for Mitsubishi motors.

Video: Mitsubishi AC Servo Spindle Drives MDS-A/B/C/D/DH. Test und Reparatur bei industrypart GmbH

Video: Mitsubishi AC Servo Spindle Drives MDS-A/B/C/D/DH. Test und Reparatur bei industrypart GmbH

We specialize in the following series:

MDS-A
MDS-B
MDS-C / CH
MDS-D / DH / D2

Our repair process is preventive-oriented and includes a series of steps that contribute to ensuring high repair quality.

Fault analysis and localization

What can you do?

Faults in power supplies, servo, and spindle modules.

Possible solutions and hints

Try replacing the motor as a test.
Check cable connections.
Operate in jog mode without load.

If these measures do not help, the fault usually lies in the power stage of the drive module.

For additional error messages, refer to the alarm list available for download at the end of this page.

Possible solutions and hints

Warm the device with an external source. If it then turns on, this indicates a weak power supply that needs repair.
Check fuses.
Verify the voltage supply of 3 x 200 or 220 volts depending on the model.

For additional error messages, refer to the alarm list available for download at the end of this page.

Possible solutions and hints

For the power supply, this could mean that the connected consumers (servo or spindle drives) are causing an overload.
Solution: Gradually remove or replace consumers to locate a faulty device.

In the case of servo and spindle modules, a faulty motor can trigger an overload.
Solution: Check the motor and connection cables.

However, in both cases, the device itself can be the cause of the error, as its power output stage may be defective.

For additional error messages, refer to the alarm list available for download at the end of this page.

Possible solutions and hints

Try replacing the motor as a test.
Check cable connections.
Operate in jog mode without load.

If these measures do not help, the fault usually lies in the power stage of the drive module.

For additional error messages, refer to the alarm list available for download at the end of this page.

Possible solutions and hints

Warm the device with an external source. If it then turns on, this indicates a weak power supply that needs repair.
Check fuses.
Verify the voltage supply of 3 x 200 or 220 volts depending on the model.

For additional error messages, refer to the alarm list available for download at the end of this page.

Possible solutions and hints

For the power supply, this could mean that the connected consumers (servo or spindle drives) are causing an overload.
Solution: Gradually remove or replace consumers to locate a faulty device.

In the case of servo and spindle modules, a faulty motor can trigger an overload.
Solution: Check the motor and connection cables.

However, in both cases, the device itself can be the cause of the error, as its power output stage may be defective.

For additional error messages, refer to the alarm list available for download at the end of this page.

Handling parameters

When parameterizing, it is crucial to save the settings early and also document jumper and key settings.

Parameter is set on the device

What should be considered when parameterizing?

The parameters are not stored in the devices but in the machine. The user must perform this process independently at the machine.
Pay attention to jumper and key settings and it's best to take photos of them.
Obtain the appropriate documentation or software for setting the parameters.
You will find further documentation on this topic at the end of this page or ask us.

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The typical process for repairing Mitsubishi drive modules

Technician measures on a circuit board

Technician connects device to the MDS test bench

Technician shows checklists

Technician points out on the checklist

The device is photographed

The repair process for drive modules includes the following steps:

Preventive overhaul - replacement of all necessary defective and worn parts.
Intensive cleaning.
Comprehensive final and stress tests on our test benches.
Parameter matching or restoration of parameters.
Completion of documentation and checklists.

VIDEO: Repair and test process of Mitusbishi AC Servo/Spindle Drives MDS-A/B/C/D/DH

High-quality spare parts for high-quality repairs

Storekeeper retrieves spare part from the warehouse

Technician removes spare parts

Technician extracts spare parts

For Mitsubishi drive modules, we replace

Electrolytic capacitors
Large buffer capacitors
Relays
Current measuring modules
Optocouplers

Additionally, we replace certain parts that have been frequently failing over multiple repairs and have been statistically selected for replacement.

To counteract bottlenecks and discontinuations, we have process-oriented software solutions that monitor our inventory. We order some parts in advance, and for series repairs, we even secure ourselves with sufficient spare parts for a year to ensure access to a large stock at any time.

Quality and Level of Repair

A professional repair requires the use of a test bench. Specially tailored and complex testing equipment is developed for each new series. The devices are thoroughly checked for functionality by undergoing a long-term stress test.

Control of the testing procedure and analysis at the MDS test stand

Connection of a device to the MDS test stand

Connection of a device to the MDS test stand

The test is conducted on a test bench that allows a 100% simulation of processes as in a real machining machine with Mitsubishi control.

During the test, the following are checked:

BUS control
POT/NOT
Encoder connection
Alarm states
Speed
Current and voltage consumption
Temperature
Parameters

VIDEO: Repair and test process of Mitusbishi AC Servo/Spindle Drives MDS-A/B/C/D/DH

We continuously expand our repair portfolio with new series

Since drive and power electronics are often prematurely discontinued, you may be under pressure to deliver replacements to your customers on time. We assist you in analyzing bottlenecks and work together on optimal solutions.

The typical process includes:

Development of test stands and procedures
Organization of spare parts
Preventive repair at the component level
If needed, development of new or re-engineering of modules or complete devices

Frequently Asked Questions (FAQ)

Drive module repair

In which quality/level are load tests performed at your company?

Complex and specially adapted test equipment is developed for each new series. Devices are tested with long-term load test thoroughly checked for functionality. Get an idea of our test facilities.

Do you have special spare parts, which are necessary for qualitative repair?

In times of shortages and discontinuations, we have process-oriented software solutions that monitor our inventories. We order some parts in advance, for series repairs even for 1 year, so that we can fall back on a large stock of spare parts. Certain modules are re-engineered by us.

Can you parameterize the devices?

If possible, a copy of the parameters is always read out and stored upon receipt. After successful repair, the data is compared and in case of exchange or sale, original parameters are transferred or restored to the new device. We have all the necessary hardware as well as software applications to parameterize Yaskawa devices according to the specifications.

What processes are involved in the repair of drive modules?

The repair process for drive modules includes, but is not limited to, the following:

Preventive overhaul - replacement of all necessary defective and used parts. E.g. electrolytic capacitors, transistors, optoelectronic components.
Intensive cleaning
Extensive final and load tests on our test stands
Parameter adjustment or parameter recovery

You can find more information on the process flow for drive module repair here.

Further information

What are the example type designations for this device series?

Servomodule MDS-B-V2-3535, MDS-B-V2-0505, MDS-C1-V2-4545, MDS-B-V1-45, MDS-C1-V2-4520, MDS-B-V2-1010, MDS-B-V2-3510
Spindelmodule MDS-B-SPH-55 , MDS-B-SPM-110, MDS-B-SP-150, MDS-B-CV-185, MDS-A-SP-185, MDS-B-SP-150, MDS-C1-SP-185
Netzteilmodule MDS-B-CV-110, MDS-B-CVE-185, MDS-A-CV-300, MDS-B-CV-300, MDS-B-CVE-260, MDS-C1-CV-300

Will I get a detailed repair report after a successful repair?

We document the repair process for every order. You can download a detailed description of the process here.

Do you commission new or unknown equipment?

We are continuously looking for new areas of activity. After consultation with the customer, we determine the necessary steps for a safe and qualitative repair

Can it happen that after repair my device continues to show errors?

It may happen that error messages continue to be displayed with the connected device. Already during the analysis of the errors, we give the customers suggestions for solutions for different malfunctions and errors. error cases, if we suspect further error causes. Errors and faults are documented, among other things, in the log file of the respective device, which may indicate, for example, encoder communication problems, cable defects or overloads.

What does serial repair or overhaul mean

Many of our customers have defective devices of the same model in larger quantities. We have optimized our processes for series repair and have the capacity to repair many devices in parallel quickly and to a high repair many devices in parallel.

Cost & Warranty

What are the costs for repair or overhaul? What does "flat repair rate or standard repair price" mean?

The repair process itself represents a high degree of technical complexity, which we always want to master with a qualitative and long-term solution for you. solution for you. However, the maintenance of these quality characteristics requires, to agree on a repair flat rate or standard repair price. We communicate honestly and transparently all the information you need. For example, prices, previous and completed work steps, delivery times, etc.

Is there a warranty for the respective repair?

Basically we give 12 months warranty.

MDS-A-B-Servo-Spindle-Powersupply-Alerts.pdf (7.48 MB)

MDS-C1-Powersupply-Alerts.pdf (0.08 MB)

MDS-C1-Servo-Spindle-Alerts.pdf (0.41 MB)

MDS-CH-Servo-Spindle-Alerts.pdf (0.25 MB)

BNP-C3000_MDS-C1.pdf (10.13 MB)

MDS-C1 Series - bnp-b2365_eng_b-1.pdf (6.32 MB)

MDS-D-DH Series Instruction-Manual.pdf (16.68 MB)

Mitsubishi MDS-D-DH Specification Manual.pdf (9.51 MB)

Mitsubishi MDS_A and B Meldas AC Servo _ Spindle Specification Manual-1.pdf (14.80 MB)

You can contact us in the following way:

Chat with our customer support, write us a message: [email protected] or call us: +49 6251 9888430

Mitsubishi MDS catalog Contact us

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

Compact 2-axis servo drive unit from the Mitsubishi MDS-B series.
Designed for use in CNC systems of the MELDAS M500 series.
Integrated Intelligent Power Modules (IPM) to reduce heat generation and size.
Supports high-precision machining through high-speed CPU and sub-micron encoder evaluation.
Complies with European safety standards (LVD/EMC).

Model designation

MDS: MELDAS Servo/Spindle Drive Series
B: Second generation (MDS-B)
V2: 2-axis servo amplifier unit
2020: Capacity class 2.0 kW for L-axis and 2.0 kW for M-axis

3. Technical Data

Feature	Value
Input voltage (DC link)	270 - 311 VDC (via MDS-B-CV)
Rated current	13 Arms
Maximum current	42 Arms
Continuous power	2.0 kW + 2.0 kW
Output voltage	155 V
Frequency range	0 - 333 Hz
Overload capacity	300 % (short-term)
Protection class	IP00 (built-in unit)
Cooling method	Fan cooling (Type A1)
Ambient temperature	0 to +55 °C
Dimensions (HxWxD)	380 x 60 x 300 mm
Weight	5.5 kg
Supported encoder types	OSA104, OSA105, OSE104, OSE105
Communication interfaces	Mitsubishi High-Speed Serial

Connections & Interfaces

CN1A/CN1B: Bus interface to NC and next drive (SH21 cable).
CN2: Encoder connection for L-axis.
CN3: Encoder connection for M-axis.
CN4: Connection to MDS-B-CV power supply unit (Emergency stop signal).
CN9: Maintenance and diagnosis interface.
CN20: External brake connection (EM1, EM2).
TE1: Power output for motors (U, V, W).
TE2: DC link connection (L+, L-).
TE3: Control power input (L11, L21) 200VAC single-phase.

Control boards / assemblies

Integrated control PCB with high-speed CPU for SHG control.
IPM (Intelligent Power Module) with IGBT technology.
7-segment LED display for status and fault diagnosis.
Rotary switch for axis number setting (0-F).
Current and voltage sensors for monitoring both axis circuits.

Alarms & Troubleshooting

Code	Description	Typical cause	Check	Remedy
11	Axis selection error	Incorrect rotary switch setting	Check switch position	Set correct axis number
12	Memory error	Internal RAM/ROM fault	Hardware self-test	Replace unit
13	Software process error	Data processing timeout	Check EMI	Improve grounding
16	Pole position detection error	Differential signal error	Check encoder cable	Replace encoder or cable
17	AD converter error	Internal circuit fault	Hardware diagnosis	Replace unit
18	Initial communication error	Absolute position data error	Check battery/encoder	Reset absolute position
1A	Serial encoder communication error	Cable break or encoder fault	Check CN2/CN3	Replace cable or encoder
1B	CPU error (SUB)	Internal processor fault	Hardware diagnosis	Replace unit
1C	LED error (SUB)	Internal display fault	Hardware diagnosis	Replace unit
1D	Data error (SUB)	Corrupt serial data	Check shielding	Check EMI measures
1E	Serial encoder thermal error	Encoder overheating	Check motor load	Improve cooling
1F	Communication error (SUB)	Serial link interruption	Check connectors	Replace cable
20	No signal detected 1	Encoder signal missing	Check wiring	Replace encoder
21	No signal detected 2	Encoder signal missing	Check wiring	Replace encoder
25	Absolute position lost	Battery empty	Measure battery voltage	Replace battery
26	Unused axis error	Axis disabled in parameters	Rotary switch setting	Enable axis
27	Absolute scale CPU error	Internal scale fault	Check scale	Replace scale
28	Absolute scale overspeed	Feedrate too high	Traverse speed	Reduce speed
29	Absolute scale circuit error	Scale hardware fault	Check scale	Replace scale
2A	Relative scale circuit error	Encoder hardware fault	Check encoder	Replace encoder
2B	CPU error	Main processor fault	Hardware diagnosis	Replace unit
2C	LED error	Main display fault	Hardware diagnosis	Replace unit
2D	Data error	Corrupt main data	Check shielding	Check EMI measures
2F	Communication error	Serial link interruption	Check connectors	Replace cable
31	Overspeed	Motor speed > 115%	Parameter SV001/002	Reduce speed
32	Power module overcurrent	IPM short circuit	Motor/cable for ground fault	Replace unit
34	CRC error	Communication error to NC	Check NC cable	Replace cable
35	Data error	Command data error	NC status	Replace unit
36	Transmission error	Data link timeout	Check NC cable	Replace cable
37	Parameter error	Invalid parameter value	SV parameter list	Correct parameters
38	Protocol error 1	NC communication fault	NC interface	Replace unit
39	Protocol error 2	NC communication fault	NC interface	Replace unit
3A	Overcurrent	Excessive motor current	Mechanical load	Reduce load
3B	Power module overheat	IPM temperature too high	Fan/heatsink	Clean unit
42	Feedback error 1	Encoder pulse skip	Check encoder	Replace encoder
43	Feedback error 2	Encoder deviation	Check encoder	Replace encoder
46	Motor overheat	Motor temperature too high	Load/cooling	Reduce load
50	Overload 1	Continuous overload	Check mechanics	Reduce load
51	Overload 2	Peak overload	Acceleration	Increase ramp time
52	Excessive error 1	Following error too large	Load/gain	Adjust parameters
53	Excessive error 2	Following error too large	Load/gain	Adjust parameters
54	Excessive error 3	Following error too large	Load/gain	Adjust parameters
58	Collision detection 0	G0 collision	Check machine	Remove obstacle
59	Collision detection 1	G1 collision	Check machine	Remove obstacle
5A	Collision detection 2	Collision detected	Check machine	Remove obstacle
82	Power supply no signal	Link to CV unit missing	CN4 cable	Replace cable
88	Watchdog	CPU hang-up	EMI influences	Replace unit
90	Initial communication error (Low-speed)	Scale init fault	Check scale	Replace scale
91	Detector communication error	Scale connection	Check scale	Replace scale
92	Detector serial format error	Scale data fault	Check scale	Replace scale
93	Absolute position fluctuation	Unstable scale data	Grounding	Replace scale
96	MPE scale feedback error	Scale deviation	Check scale	Replace scale
97	MPO scale offset error	Scale offset	Check scale	Replace scale
9E	WAN error	Multiturn counter error	Check encoder	Replace encoder
9F	Battery voltage drop	Battery low	Battery voltage	Replace battery
E1	Overload warning	80% load threshold reached	Mechanics	Reduce load
E3	Absolute counter warning	Counter error	Battery	Reset absolute position
E4	Parameter error warning	Parameter out of range	SV parameters	Correct parameters
E6	Removing control axis	Axis deselected by NC	NC configuration	Enable axis
E7	NC emergency stop	E-Stop command from NC	E-Stop circuit	Release E-Stop

Typical applications

CNC machine tools with multiple feed axes.
High-precision turning and milling machines.
Automated production lines with Mitsubishi M500 controllers.
Applications requiring compact design with high power density.

Service notes

Wait for DC link discharge time (approx. 10 min) before performing any work.
Regularly check cooling fans and heatsinks for contamination to prevent overheating (Alarm 3B).
For absolute encoder systems, check battery voltage regularly (Warning 9F).
Ensure proper grounding (Class 3) to minimize communication errors.

Repair procedure

Incoming inspection and recording of fault description.
Initial electrical testing of the power stage and DC link for short circuits.
Damage analysis to identify defective components such as IPM modules, electrolytic capacitors, or optocouplers.
Replacement of aged or defective power semiconductors and capacitors.
Repair of driver stages and thorough PCB cleaning.
Component replacement with industrial quality parts according to manufacturer specifications.
Intermediate testing of control signals and internal protection functions.
Load test on the test bench under rated load with original servo motors.
Long-term test to ensure thermal stability under operating conditions.
Final inspection according to standardized test protocol.
Documentation and quality release by industrypart.com.

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

Maintenance Personnel and Technicians

Safety before installation: verification of drives and motors to prevent unplanned downtime.

Purchasing and Procurement

Purchasing and Procurement

Protection against incorrect purchases through technical inspection of serial numbers, condition, and authenticity.

Quality Management

Quality Management

Documented test results for internal quality assurance and audit purposes.

Machine and Plant Manufacturers

Machine and Plant Manufacturers

Reliable verification of components to safeguard customer projects and contractual commitments.

Distributors and Resellers

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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Service company for drives and motors.

CONTACT INFORMATION

Address:
Robert-Bosch-Straße 33 a,
64625 Bensheim, Germany
General requests:
+49 6251 9888430
Fax:
+49 6251 9888431
Email:
[email protected]
Office hours:
Mo.- Fr. 8 am - 12 pm
and 1 pm - 4:30 pm

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