Drive Solutions for the Global Mining Industry - Tmeic.com

Drive Solutions for the 

Global Mining Industry 

metals cranes 

mining testing oil & gas paper utilities 

cement

About TMEIC 

A Global network 

TMEIC is built on the combined and proud heritage 

of Toshiba and Mitsubishi-Electric in the industrial 

automation, control and drive systems business. 

TMEIC’s global business employs more than 2,200 

employees, with sales exceeding U.S. $2.4 billion, and 

specializes in Metals, Oil & Gas, Material Handling, 

Utilities, Cement, Mining, Paper and other industrial 

markets. 

TMEIC Corporation, headquartered in Roanoke, 

Virginia, designs, develops and engineers advanced 

automation and variable frequency drive systems. 

The factory for the World’s factories 

TMEIC delivers high quality advanced systems and 

products to factories worldwide, while serving as a 

global solutions partner to contribute to the growth of 

our customers. 

Customer Service 

At TMEIC, our focus is on the customer, working to 

provide superior products and excellent service, 

delivering customer success every project, every time. 

Variable Frequency Drives in the Mining Industry 

Every step of the way, from the mine to the finished 

product, variable frequency drives (VFDs) are used to 

smoothly start large motors and continuously adjust the 

speed as required by the machine or process. Induction and 

synchronous motors driving excavators, conveyors, 

mills, fans, and pumps use VFDs to provide high power 

and speed control, as well as generate significant 

associated energy and maintenance savings. 

Hoists 

Draglines & Shovels 

Conveyors 

Grinding Mills 

Pumps 

• Large draglines and shovels require drives to 

provide high power to all the motors running the 

machine with controlled torque and speed. 

• Long conveyors require drives for starting and 

running, in particular to provide controlled starting 

torque to avoid belt slip, and the ability to adjust 

speed to match processing needs. 

• The TMdrive ® -10/30/50/70 family of drives and 

TMEIC motors are also well-suited for mine hoist 

applications. 

• Drives are useful in soft starting large mill motors. 

Motor life is extended by eliminating inrush 

currents. Low currents at start also benefit the 

power delivery system by reducing voltage dips. 

Page 2 of 32 

© 2011 Toshiba Mitsubishi-Electric Industrial Systems Corporation, Japan. All Rights Reserved.

Why Use Electrical Variable Frequency Drives? 

Here are some of the reasons to use VFDs in the mining industry: 

Increased Reliability Pages 4, 5, 9 

Variable frequency motor-drive systems are more reliable than traditional mechanical approaches 

such as using throttling valves, gears, or turbines to control speed and flow. Because electric drives 

have no moving parts, they provide very high reliability. For example, the high MTBF of the Dura- 

Bilt5i MV drive allows us to offer a 5-year warranty for that product in North America. 

Good Control over Earth Moving Machines Pages 4, 5, 6 

Responsive speed and position control of large machines with mechanical functions such as hoist, 

swing, and drag, require powerful variable frequency drives. Long conveyors also require accurate 

torque and speed control provided by VFDs. 

Significantly Less Maintenance Pages 8, 19 

Mine equipment demands high system availability. Electric variable frequency drive systems have no 

moving parts, and are very low maintenance. This is in sharp contrast to speed control devices such 

as pumps, valves, gears, and turbines that do require extensive periodic maintenance with associated 

downtime. 

Soft Starting One or Multiple Mill Motors, and Improved Power Factor Pages 8, 9 

When electric drives soft start large motors, starting inrush current with associated heating and 

thermal stress is eliminated. This removes limitations on motor frequency of starts, reduces insulation 

damage, and provides extended motor life. With synchronization logic, one drive can soft start multiple 

motors. Finally, large variable frequency drives can improve overall system power factor. 

Why TMEIC Drives Make Sense 

Choose TMEIC, a Global Supplier Page 18 

TMEIC manufactures, sells and services drive systems worldwide, supported by engineering and 

service offices in North & South America, Europe, Asia, Japan and Australia. 

We’ve got you covered! A Complete Family of Drives Pages 19 

Our family of low and medium voltage (LV and MV) drives covers all your needs from 450 hp up to 

12,000 hp (335 kW to 8,950 kW) and beyond, with a wide output voltage range up to 11 kV, and a line 

of dc drives and motor generator controls to meet your requirements. 

Engineering Expertise Pages 11 

TMEIC drive and motor application engineers bring an average of 25 years of practical industry 

experience to your application. After analyzing your system requirements, they can recommend the 

most cost effective solution and design the complete drive system for you. 

Configuration Software Pages 19, 20 

The world-class software configuration tool is used on all TMEIC drives. Live block diagrams and 

tune-up wizards streamline commissioning and maintenance activities. 

© 2011 Toshiba Mitsubishi-Electric Industrial Systems Corporation, Japan. All Rights Reserved. Page 3 of 32

Drive Applications for Draglines, Shovels, Conveyors, Mills, and Pumps 

AC and DC variable frequency drives are used to control the speed of draglines, conveyors, mills, hoists and 

pumps in the mining industry. The following pages describe four typical applications and present the reasons 

why electrical drives were chosen. 

Application 1. Advanced Control for MG Set Draglines and Shovels 

DC-EXX MG Set Control 

The DC-EXX is TMEIC’s motor generator control for 

mining excavators. This control is a high-performance, 

innovative, hardware-software system built on proven 

technology and over 50 years of experience. 

The system is designed for multiple dc generators 

and motors used in large machines. Common-bus dc 

rectifiers feed IGBT (Insulated Gate Bipolar Transistors) 

field exciter-regulators, while a single high-speed PLC 

provides precise control and enables high excavator 

productivity. 

Overall Motor Generator Set System 

• Medium voltage ac power 

from the mine trail cable 

feeds MG set sync motors 

and auxiliary transformer. 

Aux ac Supply 

Main ac Supply 

Diode 

Rectifier 

Gen 

Exciter 

Gen 

Exciter 

Generator Field dc Bus 

• Each synchronous motor 

MG set powers multiple dc 

generators on a common 

shaft. 

Sync. 

Motor 

MG Set 

dc 

Gen 

Shaft 

dc 

Gen 

To other generators 

Motor Field dc Bus 

• Diode ac-dc converters 

on auxiliary power create 

two 600 volt common dc 

busses for generator and 

motor fields 

Motor 

Exciter 

Aux ac Supply 

Diode 

Rectifier 

Motor 

Exciter 

DC 

Motor 

Motor 

dc 

Motor 

DC-EXX Features 

Latest Technology 

• Common Bus – allows field power sharing 

• Low harmonics of diode vs. thyristor converters 

• IGBT power switches vs. thyristors 

• Replace field circuit dc contactors with thyristor 

More Control Features 

• Drive PLC sets limits, communication, & operation 

modes 

• PLC master has motion protection & drive settings 

• Complete control during LE (Excitation) stop 

Superior Design 

• Current but proven technology 

• Fewer excitation transformers 

• Simpler drive internal controls 

• Small footprint 

• Lower total system cost 

Benefits 

Improved Performance 

• Smaller feed transformers and lower cost 

• Less heating & interference, smaller auxiliary transformer 

• Faster response, no cell state sensors, fewer devices 

• Less maintenance; same field circuit protection & braking 

Improved Control 

• Simplified supervisory PLC system & real-time monitoring 

• Visible functionality for easier monitoring & maintenance 

• Faster motion stop while protecting motors & generators 

Improved Value 

• Long product life 

• Less space, simpler, lower cost MCC and ac feeds 

• Easier troubleshooting and setup 

• Better and smaller panel layout and maintenance 

• Better value 

Page 4 of 32 


Application 1 (continued). Latest Technology for DC MG Set Controls (Dragline Example) 

Operator HMI 

Onboard DL Systems 

Maintenance HMI 

Supervisory 

PLC 

Drive 

Controller 

Touch Screen 

Converter 

Profibus 

T1 

LE 

Absorption 

chopper 

Generator Field DC Bus 

H S D1 D2 

DC-EXX 

Chopper 

Exciter 

(typical) 

Energy 

absorption 

resistors 

Gen. 

Fields 

Field 

protective 

crowbars 

Converter 

T2 

Motor Field DC Bus 

Sync. Motor 

Excitation 

typical 

dv/dt filter 

(typical) 

Motor 

Fields 

Hoist Swing Drag 

Propel 

dv/dt 

filter 

Detailed System Configuration 

Main Components 

• Medium voltage ac power from the mine trail 

cable feeds MG set synchronous motors and 

auxiliary transformer. 

• Each synchronous motor MG set powers multiple 

dc generators on a common shaft. 

• Diode ac-dc converters on auxiliary power create 

two 600 volt common dc busses for generator and 

motor fields. 

• Exciters use IGBT switches in a dc chopper 

configuration to feed filtered, controlled current to 

dc fields. 

• A high-speed drive controller for optimum digging 

and machine protection. 

• Dragline ac incoming Power Factor is maintained 

by synchronous motor exciters fed from the dc 

motor common bus. 

• Machine supervisory PLC controls and protects 

excavator and communicates through operator 

and maintenance displays. 

• Profibus line to drives used for commands and 

monitoring. 

Ruggedized DC-EXX Modules 

Exciter 

• 300 or 600 V dc in, 150, 300 and 

600 Amp output, output voltage 

to match field requirement. 

• Microprocessor controlled IGBT 

switches regulate armature 

voltage and current. 

• Film type internal capacitors for 

wide temperature tolerance. 

• Receives operating commands 

through Profibus input from 

drive controller. 

DC Converter 

• 220-440 V ac 3-phase 

input 

• 300-600 V dc output 

• 350 or 750 Amp 

output capacity 

• Static switches in the generator and motor fields 

provide field protection and controlled emergency 

stopping. 


Application 2. AC Drives for Draglines 

Utility 

Supply 

Input 

Reactors 

Operator 

Control 

Other subsystems 

® 

TMdrive - 

P-30 

Active 

Converter 

TMdrive-30 

PWM 

Inverter 

Drag/Propel 

TMdrive-30 

PWM 

Inverter 

Drag 

TMdrive-30 

PWM 

Inverter 

Hoist 

TMdrive-30 

PWM 

Inverter 

Hoist 

TMdrive-30 

PWM 

Inverter 

Swing 

Supervisory 

PLC 

LAN 

Latched D/P 

Transfer 

Operator HMI 

D1 D2 H1 H2 

Maintenance 

Touch Panel 

P1 

P2 

One-line TMdrive-30 dragline configuration 

(Typical lineup – number required depends on dragline configuration) 

S1 

S2 

Main Components 

• Incoming power from the mine distribution 

system feeds the TM-30 converter via the 

onboard transformer. 

• For three-level output, the TM-30 converter 

powers two, 900 V dc busses that are 

available to the entire line-up of the 

inverters. The PWM converter is fully 

regenerative and can provide leading VARS 

for voltage stability. 

• Each drive inverter is connected to a motor 

for performing a particular motion of the 

dragline. 

• The swing drive feeds the two swing motors 

(depending on motion HP), while the propel 

motion is shared with the drag drive. Hoist 

motors are supplied from dedicated drives. 

• The number of inverters per converter 

lineup depends on the peak and RMS power 

levels and required dragline power and 

reactive power characteristic needed for 

mine voltage stability. 

• A machine supervisory PLC sends 

references to the drive and controls/protects 

the dragline while running. 

• Two touch-sensitive HMI displays are 

provided for easy maintenance, diagnostics 

and monitoring. 

• Communications between the drives and 

PLC can be provided via industry high-speed 

standard protocol like Profibus-DP. 

TMdrive-30 Cabinet line-up 

IGBT Three-Level Phase-leg 

Assembly 

The inverters and IGBT-based 

sources have modular threelevel 

phase leg assemblies. 

Each phase leg includes: 

• IGBTs with flyback diodes 

• Heat pipe assembly 

• IGBT gate driver circuit 

board 

• Heavy-duty slides allow easy 

access for maintenance 

• High-speed fuses 

Rack-out module 

Page 6 of 32 


Application 3. Transporting Ore by Conveyor - Tough Speed and Torque Control 

A train transporting ore to a processing plant had become obsolete and unreliable. TMEIC’s solution was to replace 

the train with a conveyor to transport the ore. The conveyor was segmented into three pieces: Conveyor 1 lifts the 

ore to the surface, Conveyor 2 moves the ore several miles, and Conveyor 3 moves the ore to the processing plant. 

The longest segment, Conveyor 2, is detailed below. 

Conveyor 2 Design Challenges 

Motor Challenges: The system required: 

• Motor powers up to 2250 hp with high starting 

torque 

• Wide speed range 

Motor Solution: 2.3 kV induction motors with 

separate cooling air system supplied by the user. 

Drive Challenges: The drives must be: 

• Reliable for continuous service 

• Energy efficient 

• Low maintenance 

Drive Solution: TMEIC ac drives for 2300 volt 

operation, with 3-level PWM inverters and 18-pulse 

rectifiers. 

Control Challenges: The system required: 

• Precise torque for belt tension control 

• Head to tail tension coordination 

• Variable speed operation of any motor. 

Control Solution: An Innovation Series controller 

Typical overland conveyor 

for torque programming. 

The Longest Conveyor Segment 

Four large drives and induction motors totaling 9,000 hp 

move the longest conveyor segment. High altitude required 

drive derating and attention to cooling. As shown below, 

the grade varies from 1% up to 5%. 

Power Challenges: The system required long 

power feeds, and needed to avoid capacitancecreated 

resonance at high order harmonics. 

Power Solution: The power system employs: 

• 3-level inverters with IEEE 519 compliant, 

18-pulse converters 

• High frequency filters to eliminate cable 

resonance at 19th harmonic 

Conveyor 2 

13.8 kV 

GRADE = Variable 5% to 1% 

Conveyor 2 

Plan View 

2140 kVA 

13,800/2400 V 

Head end equipment 

house @9500 feet AMSL 

AC Pulse Width Modulated Drive System 

AC Drive 

2300V 3 level 

Elev. 

9,500 ft. 

AC Motor 

2.3 kV 

1,000 or 

2,250 hp 

M 

2,400 ft. 

Elev. 

7,100 ft. 

Benefits of ac Drive System 

Very reliable system. Replacing the 

train with the conveyor and variable 

frequency drive system resulted in: 

• High reliability 

• Reduction in maintenance & down 

time 

Variable speed brings benefits. 

Conveyor speed control resulted in 

several benefits: 

• Energy savings 

• Reduced friction 

• Reduced belt wear 

Technical risks avoided. Careful design 

avoided failure potentials such as 

slippage and stretch of the miles-long 

total belt length driven by 9,000 hp at 

the head end (four motors of 2,250 hp 

each). 


Application 4. Grinding Mill Motors 

Customer installations at this plant use variable frequency drives for a number of applications. Four motors ranging 

from 250 to 2,400 hp are driven by TMEIC medium voltage drives. There are three large mill motors, each one requiring 

a medium voltage motor of 4,000 hp size. 

The customer had several requirements when 

selecting the three large mill motors, associated 

drives and controls, including: 

• Ability to soft start any of the motors from any 

drive and reduce the impact on the power system. 

• Ability to synchronize the motors with the utility 

supply and run some or all of the motors on the 

utility supply at constant speed. 

• Ability to run one motor at variable frequency to 

allow grinding process optimization. 

• Use synchronous motors, because they can supply 

leading VARs to the power supply system to help 

correct poor plant power factor. 

After reviewing alternatives, the customer decided to 

install a medium voltage Load Commutated Inverter 

(LCI) to individually soft start the three mill motors. 

Benefits of Variable Speed Drive and Synchronous Motors 

Cost savings. The customer’s analysis indicated excellent savings by using synchronous motors 

because they correct the power factor for the whole plant, and they have a high efficiency. In this 

location the utility charges users a penalty for low power factor operation. 

High reliability. The medium voltage LCI has a proven history of high reliability over the past 20 years: 

• N+1 SCR redundancy allows continued operation even if a SCR fails 

• Water cooled power modules 

• SCRs can be changed without opening the cooling circuit 

• The MTBF based on plant operation is over 15 years 

Smooth motor starting. The drive controls the rotor field (through the exciter) and the stator current 

to provide a smooth starting profile without exceeding rated volts and amps, thereby protecting the 

motor against overheating. Controlling the motor current is also important where power system grids 

are weak or the plant is at the end of a long transmission line. In addition to starting, the drive provides 

smooth motor synchronizing with the supply. 

Page 8 of 32 


Application 4 (continued). Multiplexing a Drive to Start & Control Three Large Mill Motors 

Starting 


Isolation 

Contactor 

Starting 

Contactors 

Mill 

Motors 

Motor 

Exciters 

34.5 KV 

MV 


IC1 

ST1 

MTR1 

4160 V 

M1 

ST2 

MTR2 

EX1 

Excitation 

Voltage 

Controller 

ST3 

MTR3 

EX2 

Excitation 

Voltage 

Controller 

M3 

Run Breakers 

EX3 

Excitation 

Voltage 

Controller 

One-line for multi-motor start by a VFD 

Shared Drive Starting System is Cost Effective 

All three grinding mills are driven by synchronous 

motors of identical ratings. One drive can start 

any of the three motors in any desired sequence as 

shown by the blue lines in the figure above. Once the 

synchronous motor is started, the drive synchronizes 

the motor with the supply to operate directly across 

the line. 

As soon as the first mill motor is started and bypassed 

to the line, the drive is available to start the second 

mill. The same process is repeated to make the drive 

available for starting the third mill. 

All three mills can operate directly across the line, or 

one can remain connected to the drive for variable 

frequency operation if required. Because of the 

sharing, this system minimizes the customer’s capital 

cost. 

Synchronous Transfer 

The drive is responsible for the actual phase and 

voltage matching for the final transfer of the motor 

to utility operation. This transition is coordinated to 

within a few milliseconds that eliminate damaging 

torques or loss of motor synchronization. 

Soft Starting 

The drive keeps the motor starting currents below 

full load amps at all times. Starting the motor across 

the line without the drive, the starting inrush current 

is six times full current. Using the drive, motor stress 

is significantly reduced and motor life is extended. 


Application 5. Slip Power Recovery Drive System for Grinding Mill 

This ore processing facility in Papua New Guinea can process up to 4.7 million tons of ore per year. The variable 

frequency drive application is a dual-pinion SAG mill driven by two 5,000 kW wound rotor induction motors (WRIM). 

Two TMdrive-10SPRs control motor speed by recovering rotor current and returning the power to the utility supply. 

Configured in a twin motor arrangement, the motors share load in the tandem mill. 

The Customer Need 

Reliability, power dependency and logistics were a challenge for this project. Limited access to the mine’s remote 

location required power recovery and stellar reliability in its operations. 

Grinding Mill Design Challenges 

Motors: Two, 5,000 kW Wound Rotor Induction Motors 

• Twin motor application 

• One motor provides speed control, one provides torque 

control 

• Motors share the load in the tandem mill 

Drive Challenges: The drives must be: 

• Reliable for continuous service 

• Energy efficient and Low maintenance 

Drive Solution: TMdrive-10 SPR drive for each motor 

• Two, 690 VAC TMdrive-10SPR line-ups with 1800 frame 

converters and inverters 

• Drive power level is only 750 kW 

Control Challenges: The system required: 

• Speed range 85% - 110% rated speed 

• Variable speed operation of motors 

Control Solution: 1800 frame Toshiba V Series PLCs 

Power Challenges: 

Power Solution: Slip Power Recovery. 

• TMdrive-10SPR Slip Power Recovery drives 

• Continuously recovers an estimated 770 kW 

SAG Mill and Motor 

Benefits of Slip Power Recovery Drive 

Very reliable system. Standard low voltage drive hardware, with a proven track record for performance 

and reliability. 

• High reliability is suitable for the remote location 

• Reduction in maintenance and down time 

• Inherent fault tolerance - a failure of the SPR drive will not prevent the motor’s operation 

Energy efficient 

• The SPR drive offers high overall system efficiency, thus saving energy and lowering operating costs 

• Can perform additional VAR compensation utilizing extra capacity in the converters 

Latest Drive Technology 

• Modern drive control provides the latest drive communications, operating accuracy, and diagnostics 

• Standard TMEIC low voltage drive hardware is applied for use as a wound rotor motor drive 

• The TMdrive-10 drive hardware requires no modifications in the slip power recovery drive application 

Precise control of wound rotor motor while conserving energy 

• Soft starts the mill motors 

• Drives control motor torque (rotor current) directly; motors do not have to increase slip (slow down) 

to increase torque, providing faster control response than Liquid Rheostat Control 

• Slip power is recovered and fed back to power system, saving energy 

Page 10 of 32 


Application 5 (continued). Slip Power Recovery Drive System for Grinding Mill 

SAG Mill Operator’s Screen (HMI) 

The SAG mill operator’s control screen shown 

illustrates the two wound rotor motors M1 

and M2. Liquid rheostat starters on the right 

are switched in before starting and switched 

out when the motor reaches SPR regulating 

speed. 

Recovered slip power from the rotor flows 

to the left through the slip power recovery 

drives and out through the transformers to 

the supply. 

Motor speeds up to 110% of synchronous 

speed are possible, if torque and horse 

power limitations are observed. 

Electric power savings using Slip Power 

Recovery are considerable. An example 

calculation is shown on the next page. 

Slip Power recovery 

at normal speeds 

Utility Interface 

Transformer 

Motor Stator 

Utility 

Supply 

PWM Rotor 

Converter 

PWM Source 

Converter 

TMdrive-10SPR 

Brushes and 

Slip Rings 

Wound Rotor 

Induction Motor 

Liquid 

Rheostat 

One-line of SPR operation 

Starting duty rated 

SPR Operation 

The TMdrive-10SPR takes power out of the rotor to reduce the motor speed. At reduced speeds, power flows out of 

the rotor through the SPR to the transformer and back into the supply, instead of being dissipated in the rheostat. 

The SPR provides the highest efficiency VFD configuration because only a fraction of the motor power goes through 

the drive, in this case only 750 kW, out of 5,000 kW motor power. During startup the rheostat is connected to the rotor 

and the SPR is disconnected. Once up to minimum speed, the SPR drive is connected and the rheostat disconnected. 

The motor speed is then controlled by the SPR. 


Calculating Recovered Energy Savings 

P1 Utility 3-phase 

supply power 

flow 

P1 Utility 3-phase 

supply power 

flow 

P5 Slip Power 

recovery flow 

Wound Rotor 


P2 Utility Power flow 

to motor stator 

Wound Rotor 



TMdrive-10SPR 

Low Voltage 


P4 Power flow to Rheostat 

P3 Motor shaft 

power flow 

Rheostat 

Starting and 

Speed Control 

P2 Power flow 

to motor stator 

P3 Motor shaft 

power flow 

P4 Power flow 

to SPR drive 

Rheostat 

Starting Duty Rated 

Grinding 

Mill load 

Grinding 

Mill load 

Wound Rotor Induction Motor 

with Starting Rheostat 

Wound Rotor Induction Motor 

with Slip Power Recovery 

Comparison of Wound Rotor Induction Motor Control Systems 

Calculations for the energy savings with the SPR drive are shown below. Note that the slip power varies with the slip 

speed (synchronous speed minus the actual motor speed). 

Calculation of Savings with Slip Power Recovery Drive 

Energy Efficiency 

Basic Equations 

Energy efficiency of the components are estimated 

as follows: 

For the slip power recovery case above, the basic energy 

flow equations are: 

• SPR drive efficiency = 0.97 

• P1 = Motor Power - Recovered Power 

• Transformer efficiency = 0.99 

= P2-P5 where 

• Motor efficiency = 0.95 

• P2 = P3 + Motor Losses + Rotor Power 

• Slip power from the rotor (est.), P4: 

= P3/(Motor Efficiency) + P4 

Full Load x Slip % = 373 kW 

• P5 = P4 x Drive Efficiency x Transformer Efficiency 

Operating Conditions 

Mill Load at Full Speed, shaft kW 

Mill load at 90% speed, shaft kW 

Power flow from Slip Rings (est.) 

Power flow to motor (95) efficient) 

Slip power recovery after transformer 

Utility supply power flow 

Difference in utility power used 

P1(WRM) - P1(SPR) 

Power 

Flow 

– 

P3 

P4 

P2 

P5 

P1 

Wound Rotor Motor (WRM) 

with Rheostat 

3730 kW (5,000 hp) 

3357 kW (assume linear) 

373 kW (to rheostat) 

3906 kW 

0 kW 

3906 kW 

358 kW 

WRM with Slip Power 

Recovery Drive 

3730 kW (5,000 hp) 

3357 kW 

373 kW (to SPR drive) 

3906 kW 

358 kW 

3548 kW 

SPR System Annual Savings with 7¢ electrical power 

$200,480 per year (8000 hours) 

Page 12 of 32 


Project Engineering 

General Industries Team 

Experienced Drive Engineering Team 

The drive engineering team’s experience 

in the mining industry was gained through 

years of working in mines with technicians 

and mechanical suppliers. This engineering 

background, coupled with state-of-the-art 

technology, enables TMEIC to consistently 

meet the very demanding requirements of 

the industry. 

Experienced drive engineers jointly define 

the drive equipment and control strategy 

with your engineers and the OEM. This is 

followed by detailed design of the system, 

control logic, and configuration of the 

drives. 

Local Commissioning Team Ensures 

Knowledgeable Ongoing Service 

Our globally-based field organization 

has extensive experience in the industry 

providing you with a strong service 

presence for startup and ongoing service 

work. 

Project Life Cycle Process Minimizes Risk 

Project Life Cycle Process 

The Project Teams 

Customer Team 

Technical 

Proposal 

Specification 

Detailed Hardware 

& Software Design 

& Component 

Procurement 

Factory 

Acceptance 

Test 

System 

Commissioning 

System 

Maintenance 

and Service 

Field Team 

Factory Team 

Training Team 

We understand that delay in your equipment 

commissioning is very expensive, so we take steps 

to hold our startup schedule. Our project engineering 

is based on the Project Life Cycle Process illustrated 

above and described in the following pages. 

• Project management provides a single point of 

contact from initial order to final commissioning. 

• Complete factory tests are conducted including 

applying power to the drive bridges and exercising 

the control system using motor and load simulators. 

• The local commissioning engineers are included 

in the project team, allowing a seamless transition 

from the factory to your mine. 


The Medium Voltage VFD System 

TMEIC application engineers consider the system from the medium voltage switchgear to the adjustable speed drive 

and motor, sizing and selecting required equipment for the optimal drive solution. A typical MV VFD system is shown 

below. 

Instrumentation for equipment 

metering, monitoring, protection 

and control is selected: 

- Amp transducer and ammeter 

- Watt and Watt-hr transducers 

- Phase CTs and phase 

overcurrent relay 

- Ground sensor CT and relay 

- Power quality monitor 

Selection of optional drive associated 

equipment 

- Heat exchangers if required 

- Air conditioned equipment house if 

required 

- Switchgear if motor is to be synchronized 

with the line 

- PLC for logic control 

- Reactor for use with an LCI 

Selection of the motor 

- Induction, synchronous, wound rotor 

or dc motor 

- Motor specs including power, 

torque, voltage, current, and speed 

- Selection of exciter for sync motor 

- Required motor protection devices 

- Optional tachometer 

- Optional Torsional analysis 

Drive Isolation 


M 

Load 

Substation 


Distribution Voltages 

Adjustable speed 


Drive Utilization Voltage 

Motor 

Breaker 

MV Switchgear is selected for the 

application considering: 

- The type, such as vacuum or SF6 

- The size for the current and voltage 

- The CTs, PTs, and protective relays 

to operate the breaker 

- The enclosure for outdoor or indoor 

- The environment, such as 

temperature and humidity 

Drive Isolation transformers, input and 

output, are selected for the application 

considering: 

- The type, such as dry or liquid filled 

- Size for the kVA and voltage 

- Cooling, if required 

- The enclosure for outdoor or indoor 

- The environment, such as 

temperature and humidity 

Selection of the best adjustable speed 

drive for the application: 

- Continuous and overload torque 

and power requirements 

- Type of load, including constant or 

variable torque, regenerative 

- Drive and motor voltage 

- Power system compatibility 

- Overall efficiency of the ASD and 

motor combination 

- Harmonic analysis 

Page 14 of 32 


Project Planning and Specification 

DB5i MV Unit A 

Sync Ready 

3-phase 

Utility Voltage Bus 

PLC Coordination 

& Interface 

Contactor 

DB5i MV Unit B 

Sync Ready 

3-phase 

1 CPT 

2 PTs 

Mtr 1 Mtr 2 Mtr 3 

Bypass Bus 

VFD Bus 

CT-1 CT-4 CT-5 

During all phases of your project 

planning, TMEIC assists you by 

supplying information, training, 

guide-form specifications, and 

general advice. Experienced drive 

application engineers prepare a 

technical proposal that includes: 

• Customized system architecture 

for your project. 

• Detailed equipment 

specifications for the drives, 

motors, exciters, transformers, 

switchgear, and housings. 

• Thorough description of the PLC 

and other control functions. 

• Formal bid documentation. 

Detailed Hardware/Software Design 

and Procurement 

Based on the proposal specification, the project 

engineering team proceeds with four main tasks: 

• Control Software Design. Control engineers 

configure the drives and PLC controller logic, if a PLC 

is required for the application. The illustration shows 

a typical toolbox logic function diagram in Relay 

Ladder Diagram format. The software tool is used for 

drive configuration, tuning, sequencing, and drive 

diagnostics. 

• Optional HMI Screen Design. Interface screens for 

maintenance and drive control can be configured. 

For example, the configurable keypad shown here 

provides real-time drive data and operator interaction. 

• Hardware Design. All equipment is specified to meet 

the project requirements, and a complete set of 

elementary diagrams, layout, and outline drawings is 

created. 

• Component Procurement. We work with our parent 

and partner suppliers to source the most cost effective 

system components for your application. 

Electrical prints 


configuration 

Keypad 

configuration 


Drive and System Test 

Understanding the importance of a 

thorough drive and system test, the 

TMEIC engineering team conducts 

factory tests before shipment. Drive tests 

in the factory typically include: 

Dura-Bilt5i MV 

Drive Testing 

• Full voltage and current check of power 

cells, insulation, and control circuits. 

• Acceleration and run test with unloaded 

motor. 

• Full current test into a reactor (ac 

drives). 

• Validation of all I/O interfaces. 

• Validation of the drive test modes and 

any special logic, or optional PLC using 

motor and load simulator. 

Software tool for Drive and 

Logic Configuration 

Digital Motor 

Simulator 

Digital Load 

Simulator 

Control System Test 

Factory validation of the drive 

control system is available as 

an option. 

Optional PLC with Logic, for 

example, to soft-start multiple 

motors. 

M 

Load 

PLC 

Drive Simulator Software 

Drive Control 

CPU 

Logic Control 

Operator’s Keypad 

I/O Interface 

LAN Interface 

Drive Microprocessor Controller 

Local Area Network to dcS 

System Commissioning 

In the commissioning phase, the TMEIC team includes the field 

engineers you know and trust, alongside the engineer who designed 

and tested the system. This overlap of teams between engineering 

design and the site ensures a smooth and on-schedule startup. 

The TMEIC service engineer, who is responsible for startup and 

commissioning, and for any future service required at the site, is 

part of the project team and participates in the factory system test 

to become familiar with the system. Commissioning is supported 

by TMEIC design and service engineers. 

Complete & Detailed System Documentation 

Along with the hardware and software, TMEIC delivers complete 

system documentation: 

• An electronic instruction book with all the prints on CD with a 

hyperlink index; 

• Recommended wiring and grounding procedures; 

• Renewal parts list; and 

• Standard third-party vendor documentation. 

• Validation of the drive test modes and any special logic, or optional 

PLC using motor & load simulator. 

Page 16 of 32 


Global Customer Support Network 

Service and Training 

Comprehensive technical service is provided by our Customer Support Organization, staffed by TMEIC service 

engineers with offices and spare parts depots across the globe. 

In North and South America 

Customers are supported by the TMEIC Corporation 

service personnel, design engineers and Spare Parts 

Depot in Virginia, and the TMEIC Factory in Japan. 

In Europe 

TMEIC service engineers service all drive systems in 

Europe, supported by the European TMEIC Spare Parts 

Depot. 

In Asia and the Pacific Rim 

TMEIC services drive systems throughout China, 

India and the Pacific Rim, supported by multiple Field 

Engineers, Spare Parts Depots, and the TMEIC factory 

in Japan. 

Remote Drive Diagnostics 

TMEIC supports drive customers through the Remote 

Connectivity Module (RCM), a remote diagnostic 

service link with the TMEIC design and service 

engineers in Roanoke, Virginia. The RCM enables 

seamless integration between your drives and our 

engineers. 

Remote System Diagnostics 

TMEIC’s remote system diagnostics tool, included 

in level 1 software, offers a quick path to problem 

resolution. System faults are automatically identified, 

and provide an integrated view of product, process 

and system information. TMEIC design and service 

engineers in Roanoke, Virginia, can analyze the data 

and provide steps for resolution. 

For Service or Parts, call 

1-877-280-1835 

INTERNATIONAL: 

+1-540-283-2010 

24 Hours / 7 days 

Drive Training at our Training Center or in Your Facility 

Customer engineers, maintenance and operations 

personnel are trained on the drives and control system 

at the TMEIC Training Center in Virginia. This world-class 

facility features large classrooms and fully-equipped 

training labs. 

Classroom and hands-on training consists of 50% class 

time and 50% hands-on lab time. Topics include: 

• Overview of the drive system 

• Function of the main assemblies 

• Technical details of the components 

• Drive and control system tools 

• System diagnostics and service 

As an alternative to the standard factory training in Virginia, 

TMEIC can offer a course tailored to your project and held 

at your location. In this case, a project engineer trains your 

operators, maintenance technicians and engineers in your 

facility. 


A Family of Drives up to 11 kV 

TMdrive-DC 

TMdrive-10e2 

TMdrive-10SPR 

TMdrive-30 

TMdrive-70 

Dura-Bilt5i MV 

TMdrive-XL55 

TMdrive-MVG 

6.6 kV 

3.3 - 11 kV 

3.3 

Power Ratings 

TMdrive-MVG 

TMdrive-XL55 

TMdrive-50/70/80 

2.3 & 4.6 kV 

LCI 

(MV motor with LV Slip Power Recovery drive) 

Dura-Bilt 5i MV 

TMdrive-10SPR 

1200 V TMdrive-30 

AC Low Voltage 

280-690 V AC 

DC Armature 

230 to 1200 V DC 

MG Set 

Control 

TMdrive-MVG 

DC EXX 

TM-DC 

20 40 100 200 300 400 1,000 2,000 4,000 10,000 20,000 kW 

27 54 134 268 402 536 1,340 2,682 5,364 13,400 26,820 Hp 

TMEIC’s Family of AC and DC System Drives 

Over 50 years of Drive Experience. Starting with dc 

drives, we later introduced ac drives, such as the 

the new technology Tosvert, Dura-Bilt 5i MV, and 

TMdrives. Since 1979 over 2 million hp of TMEIC 

ac drives have been installed and are in service, 

representing the largest installed base of MV drives 

of any manufacturer. 

AC drive Voltages up to 11 kV. The family of ac drives 

offers voltages from 380 V with the TMdrive-10 up 

to 11kV with the TMdrive-MVG. The dc drive family 

covers 230 to 1200 vdc 

Significant Investment in Drive Technology. TMEIC’s 

Dura-Bilt and TMdrive products represent a large 

investment in LV and MV drive technology, including 

development of semiconductor devices such as the 

IEGT and GCT. 

The Highest Reliability. TMEIC drives provide the 

highest reliability based on field experience and 

customer satisfaction survey results. 

Configuration Software. The TMdrive Navigator 

world-class configuration software is used on all 

TMEIC drives. Live block diagrams and tune-up 

wizards streamline commissioning and maintenance 

activities. 

Spare Parts Stock. TMEIC’s parts depots stock the line 

of LV and MV drive parts to provide rapid delivery to 

your facility anywhere in the world. 

Page 18 of 32 


TMdrive ® -10 Low Voltage System Drive 

575/690 AC 

440/460 AC 

Volts 

The TMdrive-10 family of low voltage ac system drives has an 

integral dc bus structure with a wide variety of inverters (dc to 

ac) and converters (ac to dc) to match diverse needs. There are 

four voltage levels – 440, 460, 575, and 690 V ac. 

50 

67 

100 

134 

200 

268 

1000 2000 kW 

1,340 2680 Hp 

Converter power level ranges are: 

• Non-regenerative, 150 kW – 3600 kW 

• Regenerative, 100 kW – 1417 kW 

Inverter power level ranges are: 

• With dc disconnects, 3.1 kW – 1182 kW 

• Without dc disconnects, 141 kW – 1454 kW 

Draw-out Inverter trays stack eight to a 32-inch wide cabinet. The 

power level ranges are: 

• Single high trays, 3.1 kW – 63 kW 

• Double high trays, 101 kW – 106 kW 

Inverter power bridges use Insulated Gate Bipolar Transistors 

(IGBT). The type of modulation is two-level voltage using pulse 

width modulation (PWM). 

TMdrive ® -10SPR Slip Power Recovery for Wound Rotor Motors 

The Slip Power Recovery (SPR) version of the TMdrive-10 provides speed control of a wound rotor motor and efficient 

recovery of slip power from the rotor. This is discussed in Application 4 on page 10. Features of the SPR 

include: 

- Significant energy savings and low cost of ownership 

- The highest efficiency adjustable speed drive 

- Pulse width modulated converter 

- Reliability 

- High power factor operation 

- High MV Motor: for wound rotor motors, from 

pulse width modulated converter 1,000 – 10,000 hp 

Speed Range: depends on rotor 

voltage; super synchronous speed 

operation is available 

I/O, LAN Interface, & Cabinet Size: 

same as TMdrive-10. 

SPR Operation 

The TMdrive-10SPR takes power 

out of the rotor to reduce the motor 

speed. At reduced speeds, power 

flows out of the rotor through the 

SPR to the transformer and back 

into the supply, instead of being 

dissipated in the rheostat. 

The SPR is the highest efficiency 

VFD because only a fraction of the 

motor power goes through the 

drive. During startup the rheostat is 

connected to the rotor and the SPR is 

disconnected. Once up to minimum 

speed, the SPR drive is connected 

and the rheostat disconnected. The 

motor speed is then controlled by 

the SPR. 

Utility 

Supply 

Slip Power recovery 

at normal speeds 

Motor Stator 

Utility Interface 


PWM Rotor 

Converter 

TMdrive-10SPR 

Power Flow at 

normal speeds 

PWM Source 

Converter 

Brushes and 

Slip Rings 

Wound Rotor 


Rheostat 

Starting duty rated 


Dura-Bilt5i MV Medium Voltage System Drive 

4,160 

3,300 

2,300 

Volts 

200 

268 

400 

536 

1,000 

1,340 

4,000 

5,364 

10,000 

7,457 

Operator Keypad: Keypad provides real time drive data 

and manual control of drive. 

Motors: Drive works with an induction motor or 

synchronous motor. 

Hp 

kW 

The Dura-Bilt5i MV delivers simple operation in a 

robust and compact design, providing a cost effective 

solution for a broad range of medium voltage 

applications. 

Backed by its five-year warranty, the Dura-Bilt5i MV 

delivers value through low cost of ownership and 

high reliability. Dual drive configurations are possible; 

power levels available include: 

• 2000 Series – 2,300 Volts Out, 200 to 3,000 hp 



• 4000 MTX Series - 4160 Volts Out, NEMA 3R Outdoor 

enclosure for 0 to 50° C ambient 

Rugged design features for high reliability include: 

• Inverter heat pipe cooling for largest size 

• Diode rectifier converter with 24-pulse circuit for low 

input current distortion 

• Neutral point clamped pulse width modulated 

inverter using medium voltage IGBTs 

Cabinet Size: 900 hp drive is 74 in. (1,880 mm) long 

6,000 hp drive is 222 in. (5,639 mm) 

long 

Cabinet height is 104 in. (2,642 mm) 

Integral Transformer: Copper wound transformer with 

electrostatic shield, rated for 115° C rise. 

DC Bus Capacitors: Bus capacitors are oil-filled for 

long life. 

Synchronization: Closed transfer synchronizing 

control. 

Access: Roll out inverter phase leg assemblies. 

Features 

Medium voltage IGBTs 

Each inverter uses 3,300 Volt Insulated Gate 

Bipolar Transistors (IGBTs). 

Benefits 

Rock-solid reliability 

High power IGBTs allow a simpler, more reliable 

inverter design with fewer power switches. 

24-pulse converter 

Each phase leg of the converter includes a 

24-pulse diode rectifier. 

Power system friendly 

The converter produces less Total Harmonic 

Distortion (THD) than the IEEE 519-1992 

specification, without requiring filters. 

Heat pipe cooling technology 

Each of the three inverter legs use heat pipe 

cooling for the IGBTs. 

Windows-Based configuration and 

maintenance tool 

• Animated block diagrams 

• Drive tune up wizards 

• Integrated trend window 

Compact Quiet Design 

The heat pipe cooling system maintains good 

semi-conductor working temperature, reduces fan 

noise, and saves valuable floor space in your plant. 

Faster commissioning and maintenance 

This world-class software tool improves 

productivity in commissioning and maintenance 

and can be used on all TMEIC drive products. 

Page 20 of 32 


TMdrive ® -MVG 

up to 11.0 kV 

11,000 AC 

10,000 AC 

6,000 AC 

3,000 AC 

Volts 

100 200 

1000 4000 10000 

Features 

A clean wave input converter 

Using the multiple winding input 

transformer, the TMdrive-MVG has a multipulse 

rectification and more than meets 

the requirements of IEEE-519 (1992). This 

reduces the harmonic voltage distortion on 

the power source and protects the other 

equipment in the plant. 

A clean output wave 

As a result of the multilevel PWM control, 

the output waveform is close to a sine wave, 

and the heat loss caused by harmonics is 

negligible. In addition, harmonic currents 

in the motor are minimized so there is 

negligible torque ripple on the output 

shaft and very little risk of torsional load 

resonance. 

A higher efficiency than conventional drives 

Actual factory load tests show the drive 

efficiency is approximately 97% (design 

efficiency is approximately 97% design 

value). This high efficiency is a result of: 

• Lowest number of switching 

semiconductors by using 1700 V IGBTs. 

• Lower switching frequencies using 

multilevel PWM control reduce the 

switching loss of each IGBT. 

• Direct connection of 6 kV motor without 

an output transformer. 

kW 

Power supply 

three-phase 

50/60 Hz 

The TMdrive-MVG is a medium voltage, ac fed drive 

designed for high efficiency and motor-friendly operation in 

a broad range of industrial applications. 

High reliability, low harmonic distortion, and high power 

factor operation are designed into the MV drive. Modular 

drawable cell inverters minimize the time required for any 

maintenance activities. 

The TMdrive-MVG is available in these voltage classes: 

3.3 kV Voltage class: 3,000 – 3,300 V ac 

6.6 kV Voltage class: 6,000 – 6,600 V ac 

10.0 kV Voltage class: 10,000 V ac 

11.0 kV Voltage class: 11,000 V ac 

Five Cabinet Sizes are available for each class, some 

examples: 

3.3 kV: 200-400 kVA, 83 in wide, 106 in. high, 36 in. deep 

2400-3000 kVA, 182 in wide, 114 in. high, 52 in. 

deep 

6.6 kV: 400-800 kVA, 126 in wide, 106 in. high, 36 in. 

deep 

4800-6000 kVA, 248 in wide, 114 in. high, 56 in. 

deep 

Input transformer, 

phase shifted 

secondary windings 

for Low harmonic 

power system impact 

TMdrive-MV (3 kV class) 

. 

M 

Inverter Cell Module 

Series 

connected 

inverter cells 

. 

. . 

. 

. 

. 

. 

Diode 

rectifier 

Inverter Cell Module 

Removed from rack 

DC-bus 

capacitor 

. 

. 

. 

. 

. 

Single phase 

inverter 


TMdrive ® -XL55 Medium Voltage Drive 

6,600 

Volts 

100 

134 

1,000 

1,340 

4,000 

5,364 

10,000 

13,400 

The TMdrive-XL55 is available 

for 6.0 – 6.6 kV voltage class. 

20,000 kW 

26,820 Hp 

The TMdrive-XL55 is a general-purpose, medium 

voltage, variable-frequency ac drive for industrial power 

ratings up to 16 MVA. Featuring high-quality Japanese 

design and manufacture, high reliability, low harmonic 

distortion, and high power factor operation are designed 

into the drive. 

Benefits of the TMdrive-XL55 include: 

• Highly reliable operation and expected 87,000 hour 

(10-year) drive MTBF, based on field experience with 

over 700 medium voltage drive installations. 

• Considerable energy savings, in particular on flow 

control applications - efficiency approximately 98.6% 

• Diode rectifier ensures power factor greater than 95% 

in speed control range - capacitors not required for 

power factor correction 

• Motor-friendly waveform from the multiple level drive 

output waveform is suitable for standard motors 

• Synchronous transfer to line option with no interruption 

to motor current 

- Allows control of multiple motors with one drive 

- No motor current or torque transients when the 

motor transitions to the ac line 

• Remote input isolation transformer 

- Less power loss in drive room 

- Less total space required 

- Simplified design and installation 

TMdrive ® -30 Medium Voltage Drive 

1,200 

Volts 

The TMdrive-30 is a medium voltage, dc-fed system 

drive for high power applications. The drive is available 

in two voltage levels – 1100 V and 1250 V ac. 

200 

268 

400 

536 

1,000 

1,340 

4,000 

5,364 

10,000 

7,457 

Hp 

kW 

Benefits of the TMdrive-30 include: 

Converter power level ranges are: 

- Non-regenerative, 3300 kW 

- Regenerative (Thyristor), 3300 – 6000 kW 

- Regenerative (IGBT), 1733 – 3465 kW 

Inverter power level ranges: 

• IGBT, 2000 – 4000 kVA 

• Common dc bus circulates motoring and regen power 

on the drive dc bus for optimum use of conversion 

equipment and power factor control. 

• TMdrive-30’s ruggedized design enables application in 

demanding environments like draglines and is suited 

for cyclic loads. 

• Rack out power modules facilitate fast inspection and 

maintenance. 

Page 22 of 32 


TMdrive ® -50 Medium Voltage Drives 

Volts 

3,300 

100 

134 

1,000 

1,340 

4,000 

5,364 

10,000 

13,400 

kW 

Hp 

The TMdrive-50 is designed for high-power applications 

High-power, precision-controlled processes are ideally suited for the 

TMdrive-50 with its efficient high current IGBT power devices and 

control cards common to the drive family. Flexible arrangement 

of converter, inverter and cooling units allows for maximum power 

density, resulting in minimum floor space and installation cost. 

3,000 – 6,000 Frame: 3,300 Volts out, motor power 2,000 – 6,000 hp 

Cabinet Size: 79 inches (2,000 mm) long, 94 inches (2388 mm) high. 

Design features for high reliability: 

• Water cooling technology for the power bridge reduces footprint 

• Medium Voltage Insulated Gate Bipolar Transistor (IGBT) provides 

power at unity power factor and low harmonics 

• Modular Design for power bridges minimizes maintenance time 

• Control signal is voltage, not current. IGBT requires very low 

power to switch. 

• High switching speeds less than 2 μ second - low switching losses 

and accurate control 

• Simple switching circuitry - gate driver hardware is compact. 

TMdrive ® -70 Medium Voltage Drives 

3,300 

Volts 

2,000 

2,682 

4,000 

5,364 

10,000 

13,400 

50,000 

67,000 

kW 

Hp 

The TMdirve-70 is designed for high-power applications 

High reliability, design simplicity and high efficiency, the TMdrive-70 

is perfect for compressor, fan and pumping applications. It provides 

accurate speed control and high efficiency while eliminating the 

need for high maintenance mechanical flow control devices. 

Design features for high reliability: 

• Water cooled, draw-out phase leg assemblies with quick 

disconnect fittings reduce drive footprint 

• Converter and inverter use medium voltage IEGT power 

semiconductors with high-speed switching to provide near unity 

power factor to the load 

• Regenerative IEGT converter available 

• Pulse Width Modulation using fixed pulse pattern control reduces 

switching losses 

• Modular design - power bridge assemblies are draw-out 

modules. Quick disconnects minimize maintenance time. 

• Motor and power-system friendly - high speed switching (500 Hz) 

coupled with the three-level bridge design delivers a smooth sine 

wave to the motor and power system. 

Frame Size 

Volts 

Out 

Motor Power 

(hp) 

8,000 3,300 5,000-10,000 

10,000 3,300 13,000 

20,000 3,300 26,000 

40,000 3,300 52,000 

Frame Size 

Cabinet Length 

inches (mm) 

Cabinet Height 

inches (mm) 

8,000 - 10,000 126 (3,200) 94 (2,388) 

20,000 220 (5,600) 94 (2,388) 

40,000, plus a 

second cabinet 

252 (6,400) 

189 (4,800) 

94 (2,388) 

94 (2,388) 


Medium Voltage Motor and Drives Systems School 

TMEIC is pleased to offer its tuition-free MV Motor and Drives Systems School to its customers. These schools are 

offered regularly in Roanoke, Virginia, and other cities. 

Course Topics: 

• Medium Voltage (MV) induction and synchronous 

motors 

• Fundamentals of variable frequency drives 

• MV drive characteristics, payback, and specifications 

• MV power systems design concepts 

• MV switchgear, starters, transformers, reactors, and 

substations 

• MV system protection 

• Real-world industrial application stories from the 

mining, cement, oil & gas, petrochemical and water & 

waste water industries 

• Equipment demonstrations 

For details and registration for our next school, please 

visit our Web site at www.tmeic.com. 

Global Office Locations: 

TMEIC Industrial Systems India Private Limited 

Unit #03-04, Third Floor, 

Block 2, Cyber Pearl, HITEC City, Madhapur, 

Hyderagad, Andhra Pradesh, India 

Tel: +91-40-4434-0000 

Fax: +91-40-4434-0034 

Email: inquiry_india@tmeic.com 

Web: www.tmeic.in 

TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS 

CORPORATION (TMEIC) 

Mita 43 MT Bldg. 

13-16 Mita 3 chome, Minato-ku 

Tokyo, Japan 

Tel: +81-3-5444-3828 

Fax: +81-3-5444-3820 

Web: www.tmeic.co.jp 

TMEIC Europe Limited 

6-9 The Square, Stockley Park 

Uxbridge, Middlesex, United Kingdom, UB11 1FW 

Tel: +44-870-950-7220 

Fax: +44-870-950-7221 

Email: info@tmeic.eu 

Web: www.tmeic.com 

TMEIC Corporation 

Office: 1325 Electric Road 

Roanoke, VA 24018 

Mail: 2060 Cook Dr. 

Salem, VA 24153 

Tel: +1-540-283-2000 

Fax: +1-540-283-2001 

Email: MH@tmeic.com 




21/F., Building B, In.do Mansion 

48 Zhichunlu A, Haidian District 

Beijing, China 

Tel: +86-10-5873-2277 

Fax: +86-10-5873-3208 

Email: sales@tmeic-cn.com 

Web: www.tmeic-cn.com 



Shanghai, China 

Email: sales@tmeic-cn.com 

Web: www.tmeic-cn.com 

TMEIC Asia Company Ltd. 

Kowloon Bay, Hong Kong 


TMEIC Asia Company, Ltd. Rep. Office 

Kaohsiung, Taiwan 


TMdrive is a trademark of TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS 

CORPORATION. 

Maxspeed is a trademark of TMEIC Corporation. 

Maxview is a trademark of TMEIC Corporation. 

All specifications in this document are subject to change without notice. This brochure 

is provided free of charge and without obligation to the reader or to TMEIC. TMEIC 

does not accept, nor imply, the acceptance of any liability with regard to the use of 

the information provided. TMEIC provides the information included herein as is and 

without warranty of any kind, express or implied, including, but not limited to, any 

implied statutory warranty of merchantability or fitness for particular purposes. The 

information is provided solely as a general reference to the potential benefits that may 

be attributable to the technology discussed. Individual results may vary. Independent 

analysis and testing of each application is required to determine the results and benefits 

to be achieved from the technology discussed. 

© 2011 TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION. 

All Rights Reserved. 

I-1009-A4

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