For the highest continuous quality

siemens.com/drives

Powerful motors and converters with a high degree of availability for rolling mills

For the highest continuous quality

2 | Intro

The requirements placed on the quality of rolled steel products and production

systems are continually increasing. Who understands this better than a drive tech-

nology partner, which sets standards in this industry. The power of innovation to

achieve the highest quality, precision and dynamic performance: Siemens complies

with this claim for rolling mills – and more precisely, since the very beginning, when

in 1897 the Siemens-Schuckert-Werke built the first electric rolling mill motor.

Siemens milestones in the area of drive technology for rolling mill motors

The power of innovation for rolling mills for more than 100 years

1897: The first drive with DC motor for a trio rolling mill, Dillinger Hütte

1907: The first Siemens rolling mill motor with Ilgner converter is used for a blooming mill be-longing to the Georgs-marienhütte close to Osnabrück, Germany

1908: Copper plate reversing rolling mill with Leonard motor control system, Zugmayer and Sons, Waldegg

1910: 297 rolling mill motors awarded to Siemens

About 1914: Leonard mo-tor control system with the SA John Cockerill (tie wire rolling mill), Seraing close to Lüttich, Belgium

1924: Siemens already has orders for 820 rolling mill motors

1933: Reversing drive of a cold rolling mill with DC motor and mercury vapor rectifiers

1921: Double Ilgner converter with two DC control motors and eight control dynamos

1938: Multi-anode mer-cury vapor converters for a continuous wide strip rolling mill

Competence based on experience and innovationFor over 100 years, Siemens has continually set new mile-stones to further develop drive technology in the steel industry. As a partner with many years of experience, we have rugged and innovative rolling mill drives to specifi-cally address the requirements of this industry. Around the globe, these drives ensure maximum reliability and efficiency. Our products provide the highest quality of rolled steel a thousand times over – unaffected by heat and high shock loads.

The optimum drive solution for every rolling applicationNo matter whether in hot or cold rolling mills, section and wire rod mills or for heavy plate stands requiring the highest torques, we have proven our leadership role. For many decades now, Siemens has provided systems for all types of rolling mills around the world – and we are con-tinuing to do this today on a daily basis. Regardless of whether it involves innovative converter concepts, well-proven rolling mill motors or efficient retrofit solutions, with Siemens, you can rely on a partner that always offers you the optimum drive solution for your rolling mill application.

Your partner – also for complex rolling millsEven if the general conditions of your project are more complex, we are available as a reliable and competent partner to help you. Our team of experts for rolling mill drives can resolve each and every problem.

Intro | 3

Our competence is there where you areOur global network of production, sales and service loca-tions allows us to speak your language – from every perspective.

This is because we understand the industry and technology- specific demands placed on the drives, and also the regional requirements of your rolling mill project.

1969: First application for vector-controlled three-phase motors in the rolling mill industry (induction motors with DC link converter for a pickling line)

1975: Launch of a model-based vector control

1977: Thyssen Krupp rolling mill motors

1978: Prototype test for rolling mill main drives with cycloconverter

1981: First industrial use of a cycloconverter drive with synchronous motor as rolling mill main drive

2003: Launch of the IGCT semiconductor technology: SIMOVERT ML2

2006: 100th anniversary of Dynamowerk

2005: First SINAMICS SM150 three-level converter

2010: SINAMICS SM150: peak power rating up to 14 MVA

2008: First SINAMICS SL150 cycloconverter

1977

1990: Beginning of series use of synchronous motors with cylindrical rotor

1995: First medium-voltage converter for rolling mills: SIMOVERT ML

Our portfolio for the steel industry

SINAMICS SM150 medium-voltage converters 4

Rolling mill main motors 12

Additional motors for rolling mill applications 16

Solutions for converter retrofits SINAMICS SL150

18

Complete drive solutions 22

References 24

4 | SM150

SINAMICS SM150

More power and performance for rolling mills

99 % efficiency!

Unbeaten: 99 % efficiencyPresently, SINAMICS SM150 is the medium-voltage converter in the market with the lowest losses. An efficiency of 99 % or bet-ter speaks for itself, and plays a significant

role in achieving the low energy usage of the complete drive system. The result: low operating costs.

Extended range of power ratingsIn the lower power range, we use well-proven IGBT power semiconductors. This means that you profit from an extended power range of the SINAMICS SM150 starting at 2,800 kW.

The first choice for rolling mills: With SINAMICS SM150, you can depend on a system that has been refined

down to the last detail and which fulfills the highest demands. Many years of experience in meeting specifica-

tions for rolling mill technology have been incorporated in this innovative medium-voltage drive. You profit

from the high peak power, performance and availability of this rolling mill drive.

Max. peak powerBasic units with 5 kA IGCTs 12.5 MVAExpanded power (N06) 13.2 MVAExpanded power (N07) 13.7 MVAExpanded power (N08) 14.0 MVA

In the upper power range, the SINAMICS SM150 is equipped with 5 kA IGCT power semiconductors, with which the following peak powers can be achieved for 60 seconds.

Max. peak powerBasic unit with IGBTs 7.2 MVA

SM150 | 5

■ Peak power range from 3.4 up to 42 MVA ■ Voltage-source DC link converters using IGCT technology (up to 42 MVA) and using HV IGBT technology (up to 7.2 MVA) ■ Increased peak load of 14 MVA per 5 kA IGCT unit with the same dimensions ■ Suitable for induction and synchronous mo-tors, predestined for single- and multi-motor drives ■ Transvector control for high dynamic perfor-mance with maximum precision ■ 4-quadrant operation with controlled energy recovery and optional reactive power compen-sation (in this case, also continually adjustable line power factor)

Power boost: In past years, the maximum peak power has been increased step by step from 10.5 MVA up to 14 MVA.

Maximum peak power in MVA

Time

10.5 MVA

4-kA

-IGCT

12.5 MVA

5-kA

-IGCT

14 MVA

5-kA

-IGCT

+

pow

er e

xpan

sion

■ SIMOTION D455-2 for higher performance and optimum integration into automation systems ■ Simple integration into automation systems via Siemens Totally Integrated Automation (TIA) or system architectures requiring other communica-tion interfaces – via the new high-performance control module (SIMOTION D455-2) ■ Buffering short time line voltage dips ■ Ideal for direct power exchange between motors in generating and motoring operation ■ dV/dt filter for IGCT converters for operation with existing motors ■ Higher degree of plant design flexibility by using longer motor-converter cable lengths up to 200 m

2006 2010

Advantages of the SINAMICS SM150 for rolling mill drives

6 | SM150

In addition to two PROFIBUS interfaces, the integrated SIMOTION D455-2 motion control system has a PROFINET interface with three ports. It also features a significantly increased memory size, data backup and increased compu-tational performance. You profit from the increased performance of the closed-loop control, optimum communication with the higher-level automation environment and the option of using more customer-specific features and functions, for instance, the open DCC SIMOTION function block library.

A new performance standardSINAMICS SM150 sets standards in many aspects: for instance regarding torque and line current quality, overall efficiency and noise levels, as well as its degree of rugged-ness so that it can handle critical operational situations. Even for quick changing load conditions, the system con-trols the speed and torque to maintain the associated set-points with the highest degree of precision.

Impressive dynamic performance and efficienciesWith SINAMICS SM150, you can rely on an impressive dynamic performance and process quality as a result of the expanded vector control, which ensures the highest torque quality. This high-speed control technique ensures the optimum voltage utilization at low switching frequencies – resulting in a high efficiency and long motor service life.

Higher degree of flexibility and TIA integrationWith SINAMICS SM150, you profit from a high degree of flexibility when it comes to adapting your drive to the line supply. Furthermore, pulse patterns can be subse-quently modified to minimize line harmonics.

SINAMICS is integrated into the seamless TIA automation environment (Totally Integrated Automation) with clearly defined system properties, thus ensuring perfect interaction between the various products. Based on Totally Integrated Automation, you can effectively address your requirements regarding efficient engineering, fast inte-gration and commissioning and high production flexibility, as well as high availability and energy savings.

Increased control performance

SM150 | 7

=

~3 ~3

~3

DC bus configuration with three motors

Energy recovery Plant availabilityPredestined for multi-motor drives in the multi- Megawatt classFor rolling mills, in which various rolling drives and coil-ers must be operated, coordinated with one another, SINAMICS SM150 (IGCT) allows power exchange between motoring and generating axis. This means that the brak-ing energy of a motor can be provided to other motors that are connected via the DC bus. This not only reduces the energy usage of the rolling mill, but also saves space, reduces installation costs and the number of components used.

Reactive power compensation using a freely selectable line power factorFor the Active Infeed, the line power factor can be freely selected. As standard (line power factor = 1), no reactive power is drawn. Using different settings, inductive or capacitive reactive current can be fed over a wide range back into the line supply. As a consequence, reactive power loads connected to the same line supply can be compensated. This reduces the amount of reactive power drawn from the power utility company – which is expen-sive – and makes additional compensation systems needless.

Energy recovery using Active InfeedSINAMICS SM150 (IGCT) especially leverages its advan-tages in applications where motors occasionally operate in the regenerative mode as a result of frequent braking and accelerating operations. Here the integrated, con-trolled infeed / regenerative feedback unit, Active Infeed, facilitates efficient 4-quadrant operation with energy recovery.

Rugged design for maximum plant availabilityThe basis for the especially rugged design of the SINAMICS SM150 is the power semiconductor technology proven in high power ranges – either HV-IGBT or IGCT depending on the power rating. These semiconductor devices are protected by a design that is perfectly tailored to cope with harsh industrial environments.

Service functions for minimum downtimesThe intelligent maintenance functions of the SINAMICS SM150 prevent non-scheduled plant downtimes with production fail-ures and costly repair service calls. This is because the compo-nents automatically signal when maintenance is required. For instance, a differential pressure technique determines the degree of pollution from the dust filter – and for liquid-cooled units, the capacitance of the ion exchanger is also monitored.

Modular design for simple maintenanceOur SINAMICS SM150 is especially service-friendly as it has no fuses. It is equipped with a voltage-source DC link overvolt-age protection and a grounding switch. The individual power modules are easier to access and can be quickly replaced. A key advantage is you are never alone, as a result of our global service network and our professional spare parts logistics.

Independent of line supply fluctuations and dipsAs global market leader for medium-voltage drives, we leave nothing to chance when it comes to securing the highest degree of plant availability. To achieve this, SINAMICS SM150 operates as a step-up controller with a higher DC link voltage than the peak value of the line voltage, which decouples the motor from the line voltage. As a consequence, even when connected to weak line supplies, the highest system preci-sion and availability are still guaranteed.

8 | SM150

Control performance

• Vector control with or without speed encoder

• Operation of induction motors, separately excited or permanent magnet synchronous motors (excitation equipment is separately available)

• Speed accuracy: +/– 0.01 % with speed encoder

• Torque accuracy: +/– 2 % for synchronous motors

• Torque rise time: 5 ms

• Torque ripple: typical ≤ 0.5 % for rolling mill drives

• Field weakening operation for induction motors 1:3, synchronous motors 1:4

• Maximum output frequency: 250 Hz (induction motor), 90 Hz (synchronous motor)

Standards

• IEC, EN, CE

• Input voltage: 3.3 kV +/– 10 %

• Frequency: 50 / 60 Hz +/– 3 %

• Line power factor: 1 (adjustable)

Motor connection

• Motor voltages: 3.3 kV

• Connection from the bottom

Auxiliary power supply

• 1 AC 50 / 60 Hz 230 V and 3 AC 50 / 60 Hz 400 V

Line-side rectifier

• Controlled, self-commutated infeed / regenerative feedback unit (Active Line module)

Motor-side inverter

• 3-level inverter (PWM) in NPC topology with IGCT power semiconductors in compact phase modules

Efficiency

• 99 % (single-motor drives)

Cooling

• Water cooling with cooling unit and redundant pumps as standard

Degrees of protection

• IP43 (optional up to IP54)

Ambient conditions

• Temperature: + 5 up to 40 °C (41 – 104 °F), up to 45 °C (113 °F) with reduced power rating

• Installation altitude: up to 1,000 m (3,300 ft), up to 4,000 m (13,200 ft) with reduced power

• Humidity: < 85 % (condensation not permissible)

Noise

• 75–79 db(A) depending on the power

Integrated functions

• Integrated grounding switch for safely grounding the DC link

• DC link crowbar to protect against DC link overvoltages

• Automatic door interlocking

• Short-circuit and ground fault monitoring

• Overcurrent, overvoltage and undervoltage monitoring

• Power failure monitoring

• Overtemperature monitoring (converter and motor)

• Overspeed protection, stall protection (motor)

• Cooling circuit monitoring

• Self-diagnostics for the closed-loop control and power unit

• Maintenance functions (operating hours counter for fan and switching cycles of the circuit breaker)

• STARTER software for user-friendly commissioning and diagnostics at the PC

• Analog inputs: 2 Analog outputs: 2

• Digital inputs: 4 Digital inputs / outputs (bidirectional): 24 Digital outputs (relays): 2

• Inputs for Pt100: 3

• Communication: PROFIBUS, PROFINET

Supplementary options

• dV / dt filter to supply existing motors / long motor cables

• Speed encoder (standard)

• Output reactors for longer cables

• Braking module

• Teleservice

• Anti-condensation heating

• Additional I/O modules

• Pt100 monitoring: 3 additional using optional expansion modules

• Grounding switch at the input and output

• Circuit breaker at the converter output

• Controlling auxiliaries

• Safe Torque Off (STO), SIL 2 with certificate

• Various versions of the cooling unit

SINAMICS SM150 with IGCTs

SINAMICS SM150 – technical data

SM150 | 9

Control performance

• Vector control with or without speed encoder

• Operation of induction, separately-excited or permanent magnet synchronous motors (excitation equipment available separately)

• Speed accuracy: +/– 0.01 % with speed encoder

• Torque accuracy: +/–2 %

• Torque rise time: 5 ms with synchronous motors

• Torque ripple: typical ≤ 0.5 % for rolling mill drives

• Field weakening range 1:3

• Maximum output frequency: 250 Hz (induction motor), 90 Hz (synchronous motor)

Standards

• IEC, EN, CE

• Input voltage: 3.3 / 4.16 kV

• Frequency: 50/60 Hz +/– 3 %

• Line power factor: 1 (adjustable)

Motor connection

• Motor voltages: 3.3 kV and 4.16 kV

• Connection from the bottom

Auxiliary power supply

• 1-ph. AC 50 / 60 Hz 230 V and 3-ph. AC 50 / 60 Hz 400 V, other voltages are optional

Line-side rectifier

• Controlled, self-commutated infeed / regenerative feedback unit (Active Line Module)

Motor-side inverter

• 3-level inverter (PWM) with NPC (Neutral Point Clamped) topology with HV IGBT for a minimum number of components

• Plug-in power cards for fast maintenance and repair

Efficiency

• Typically 97.5 %

Cooling

• Air cooling with optional redundant fans

• Water cooling with cooling unit and redundant pumps as standard


• Air cooling: IP22 (optional: IP42)

• Water cooling: IP43 (optional: IP54)

Ambient conditions

• Temperature: +5 to 40 °C (41 – 104 °F), to 45 °C (113 °F) with reduced power

• Installation altitude: up to 1000 m (3300 ft), up to 4000 m (13,200 ft) with reduced power

• Humidity: < 85 % (condensation not permissible)

Noise

• 80 dB (A) at a distance of 1 m (3.3 ft) for an air-cooled unit or 76 dB (A) for water-cooled units

Integrated functions

• Integrated grounding switch to safely and reliably ground the DC link

• DC link crowbar to protect against DC link overvoltages

• Automatic door interlocking

• Short-circuit and ground fault monitoring

• Overcurrent, overvoltage and undervoltage monitoring

• Power failure monitoring

• Overtemperature monitoring (converter and motor)

• Overspeed protection, stall protection (motor)

• Cooling circuit monitoring

• Self diagnostics of the closed-loop control and power unit

• Maintenance functions (operating hours counter for fans and switching cycles of the circuit breaker)

• STARTER software for user-friendly commissioning and diagnostics at the PC

• Analog inputs: 2 Analog outputs: 2

• Additional using optional expansion modules

• Digital inputs: 4 Digital inputs / outputs (bidirectional): 24 Digital outputs (relays): 2 Additional using optional expansion modules

• Pt100 monitoring: 3 additional using optional expansion modules

• Communication: PROFIBUS, PROFINET

Supplementary options

• Speed encoder (standard)

• Output reactors for longer cables

• Increased degree of protection (up to IP54)

• Braking module

• Teleservice

• Anti-condensation heating

• Additional I/O modules

• Additional Pt100 monitoring functions

• Grounding switch at the input and output

• Circuit breaker at the converter output

• Control of auxiliaries

• Safe Torque Off (STO), SIL 2 with certificate

• Various versions of the cooling unit

SINAMICS SM150 with HV IGBTs

10 | SM150

Configuration options

SM150 (IGCT)Configuration B (B‘)

SM150 (IGCT)Configuration C (C‘) Configuration D (D‘) Configuration E

Configuration F Configuration G Configuration H

Configuration J Configuration K Configuration L

SM150 (IGBT)Configuration A

W: 3,020 mm H: 2,570 mm D: 1,275 mm Weight: 2,850 kg





W: 10,700 mm H: 2,540 mm T: 1,600 mm Weight: 12,100 kg





Configuration A‘


SINAMICS SM150 – configuration examples

The widths and weights include the closed-loop control and the cooling system. An optional excitation unit is not included.


SM150 | 11

SINAMICS SM150 with IGCTs

SINAMICS SM150 with HV-IGBTs

SM150 single- and multi-motor drives 1

Cool

ing Output

voltageRated output current

Type rating Shaft output2 Rated input current

Order number (MLFB)

Configu-ration

Drive type

kV A kVA kW hp A

Wat

er

3.3 1,750 10,000 9,600 13,000 1,770 6SL3845-7NN41-8AA0 B

Sing

le-m

otor

driv

e

3.3 2 x 1,750 20,000 19,200 26,000 2 x 1,770 6SL3845-7NN43-6AA0 C3.3 3 x 1,750 30,000 28,800 39,000 3 x 1,770 6SL3845-7NN45-4AA0 D3.3 1,850 10,500 10,200 13,500 1,870 6SL3845-7NN42-2AA0 B‘

3.3 2 x 1,850 21,000 20,400 27,000 2 x 1,870 6SL3845-7NN44-5AA0 C‘3.3 3 x 1,850 31,500 30,600 40,500 3 x 1,870 6SL3845-7NN46-7AA0 D‘3.3 2 x 1,750 2 x 10,000 2 x 9,600 2 x 13,000 1,770 6SL3845-7NN41-8AB0 E

Mul

ti-m

otor

driv

e3.3 3 x 1,750 3 x 10,000 3 x 9,600 3 x 13,000 1,770 6SL3845-7NN41-8AC0 F3.3 4 x 1,750 4 x 10,000 4 x 9,600 4 x 13,000 1,770 6SL3845-7NN41-8AD0 G3.3 3 x 1,750 3 x 10,000 3 x 9,600 3 x 13,000 2 x 1,770 6SL3845-7NN41-8AF0 H3.3 4 x 1,750 4 x 10,000 4 x 9,600 4 x 13,000 2 x 1,770 6SL3845-7NN41-8AG0 J3.3 2 x 1,750

1 x (2 x 1,750)2 x 10,000 1 x 20,000

2 x 9,600 1 x 19,200

2 x 13,000 1 x 26,000

2 x 1,770 6SL3845-7NN43-6AF0 K

3.3 5 x 1,750 5 x 10,000 5 x 9,600 5 x 13,000 2 x 1,770 6SL3845-7NN41-8AK0 L1 You can contact local sales personnel regarding increased performance requirements (e.g. peak loads); optional expansion modules are available for a

restricted speed range.2 Values refer to the data of a typical synchronous motor

Overview of power ratings

SINAMICS SM150 with HV-IGBT

Cool

ing Output

voltageRated output current

Type rating Shaft output3 Rated input current

Order number (MLFB)

Configuration

kV A kVA kW hp A

Air 3.3 600 – 800 3,400 – 4,600 2,800 – 3,800 3,600 – 4,950 616 – 822 6SL3810-7NN3 -0AA A

4.16 600 – 800 4,300 – 5,800 3,600 – 4,800 4,700 – 6,500 616 – 822 6SL3810-7NP3 -0AA A

Wat

er 3.3 800 – 1,000 4,600 – 5,700 3,800 – 4,700 4,950 – 6,350 822 – 1,027 6SL3815-7NN -0AA A‘

4.16 800 – 1,000 5,800 – 7,200 4,800 – 5,900 6,500 – 8,000 822 – 1,027 6SL3815-7NP -0AA A‘

3 Values refer to the data of a typical induction motor

Overview of power ratings

12 | Main motors

Rolling mill main motors

Reliable drives for the highest product quality

At home in rolling mills around the worldWith an installed base of more than 3,300 motors, our main motors prove their reliability, smooth running quality and dynamic performance every day around the globe – in hot and cold rolling mills, sectional steel, rod and plate rolling mills, for carbon and stainless steels as well as for aluminum and other non-ferrous metals.

For the highest forces and abrupt load changesWide speed range with a consistent maximum power: For these requirements – typical for rolling mill applications – our synchronous motors represent an especially cost-effective solution. They are designed for high overloads, up to 275 percent of the rated torque over the complete speed range, without requiring any special measures. Even when subject to enormous loads, these motors set themselves apart as a result of their high speed stiffness and extremely low torque ripple. Rated torques of approx. 2,000 kNm are frequently used in our projects.

Rolling mill motors are extremely important when it comes to ensuring uninterrupted processes and the quality of the

rolled steel. With the extremely smooth running quality, in conjunction with high dynamic performance, the reliable

main motors from Siemens play a decisive role in achieving the highest throughput of the plant and maximum quality

of the rolled products, even for high power ratings – and perfectly customized to meet your technical requirements.

Worldwide, our motors stand for a long service lifeOur rolling mill motors have a reputation for being extremely rugged. The MICALASTIC® insulation system increases the motor winding lifetime for high-endurance mechanical strength and constant electrical properties. Using the VPI technique (Vacuum Pressure Impregnation), which is perfectly coordinated to the insulation design, the insulation system fulfills all requirements – for instance:

• Drive converter operation• High switching and reversing strength as a result of the

high stiffness of the winding overhangs• Almost void-free insulation• Excellent corona shielding• Fulfills temperature Class F• Insensitive to chemically aggressive atmospheres

Main motors | 13

Advantages of synchronous motors with cylindrical rotors

■Low-maintenance and disturbance-free operation as well as excellent smooth running properties ■Wide speed range at constant power (field weakening) ■Optional overload capability up to 275 percent of the rated torque: Minimum speed changes even for maximum load changes (e.g. at the initial pass) ■Low moment of inertia – e.g. for reversing motors ■Slipring excitation: excellent dynamic performance; full torque even at the lowest speeds ■Pedestal bearing designs for peak loads up to 7,000 kN ■Extremely rugged technology with a long service life to achieve the highest plant availability ■Compact motor design employing optimized materials ■Can be adapted to customer requirements: e.g. an existing foundation ■Global service network

Rugged bearing design with a long service lifeDepending on the particular requirements, the motors are equipped with either roller or sleeve bearings. As standard, all of our rolling mill motors have a fixed bearing. The bearing size is determined by the forces to be absorbed. For instance, direct drives for large plate rolling mills are equipped with an axial thrust bearing that is designed for supplementary axial forces in an emergency of up to 7,000 kN (for example if a roll breaks).

A rugged and compact designContrary to a salient pole rotor, with a cylindrical rotor, there are no bolted pole connections or other fastening elements. The press fit between the laminated core and the rotor shaft as well as the compact design ensure a high mechanical strength. For reversing rolling mill motors, the laminated core is also tangentially wedged onto the motor shaft. Extremely compact cylindrical rotors, effective cooling and a high power density facili-tate a compact motor design with optimized materials – and reduced life cycle costs.

Low moment of inertia for reversing motorsShort reversing times and fast speed changes when accel-erating and braking are ensured as a result of the short torque reaction times and low moment of inertia. Even enormous load changes hardly impact the speed. The slip-ring excitation ensures the full torque even at the lowest speeds and improves the dynamic performance of the control.

High degree of efficiencyWith the highest comparable efficiencies in their class, our synchronous motors for rolling mill main drives help to optimize the energy efficiency of the complete plant.

Retrofit – to transform from old to newBy optimizing all of the relevant components, the new motors are shorter and lower in height than the previous rolling mill motors. As a consequence, the power and/or efficiency of the machine and plant can be generally increased without any extensive modifications. If the objective is to increase the performance of an existing plant as a whole, then the latest generation of our rolling mill motors represents a favorably priced solution.

14 | Main motors

Main motors | 15

Synchronous motors with cylindrical rotor

Standard / optional

Motor type Synchronous motor with laminated cylindrical rotor: squirrel-cage induction motor

Type of construction IM1001 / IM7311 / IM7315, optional: IM3011 and 3231 (edger)

Power rating 500 kW – 16.5 MW

Speed IM7311: 20 – 700 rpm (reversing mill motors) IM1001: approx. 150 – 1,800 rpm

Torque IM73xx: 400 – 2,600 kNm, IM10xx: 39 – 435 kNm

Overload capability 2.0 x Mrated continuously running rolling mill motors, coilers 2.5 x Mrated edgers, beam lines, reversing mill motors (up to 2.75 Mrated maximum)

Regulations IEC 60034, optional: NEMA MG-1

Shaft height IM73xx: 800 – 1,000 mm / IM10xx: 630 – 1400 mm

Voltage Designed for converter operation, including 1,550 V, 3,300 V

Torque characteristics 0…nrated M = const., nrated …nmax M ∼ n-1

Cooling Water / air, separately ventilated, optional: air with pipe connection

External fan Mounted, optional: integrated in the cooler cover

Excitation Sliprings

Degree of protection Motor IP44, optional: Motor IP54 Slipring compartment IP23, optional: Slipring compartment IP54

Main connection Busbars at the bottom, optional: 1 terminal box for each system

Auxiliary terminal box IP55, optional: stainless steel

Bearings Sleeve bearings, roller bearings in a self-aligning design (not IM7x) Optional: oil supply system; single-tube cooler in the bearing is possible depending on the speed and size

Axial forces 1 locating bearing, corresponding to the application IM1001 to 50 kN; IM73xx to 1,000 kN

Oil intake, sleeve bearing DIN version with throttle valve, flowmeter, manometer, flange, mating flange (H09) if required

Oil outlet, sleeve bearing DIN version, oil drain with sight glass, thermometer bore and mounting flange (H11) if required

Pressurized oil, sleeve bearing If required, pressure oil pumps mounted on the bearing shield, IM731x: next to the bearing on the base frame

Insulation system MICALASTIC® VPI, designed for converter operation

Paint finish Standard RAL 7030 Optional: special paint finish; other RAL colors

Winding temperature monitoring 6 Pt100, 4-wire from the terminal box, optional: 12 Pt100, 18 Pt100

Air temperature monitoring 2 Pt100 cold air, 1 Pt100 warm air Optional: 1 airflow monitor for each fan

Leakage water monitoring With contact

Bearing monitoring 1 Pt100 for each radial bearing / 2 Pt100 for each axial bearing SPM measuring nipple can be screwed in for roller bearings

Anti-condensation heating Voltage depending on the requirement

Rolling mill main motors

Synchronous rolling mill motors – technical data

16 | SIMOTICS HV, FD and DP

Systems with the SIMOTICS HV H-compact PLUS, Vario PLUS and M (modular) as well as SIMOTICS FD and DP motors

Predestined for rolling mill drives

H-compact PLUS – compact, flexible, highest availabilityH-compact PLUS motors with a modular cooling concept are reliably operating in many rolling mills – with open-circuit, air-air or air-water cooling. They are available as high- and low-voltage versions, and cover a power range up to 11.7 MW. Shaft types 630 and 710 have a shock-proof, welded steel housing. H-compact PLUS sets stan-dards when it comes to reliability and flexibility – with an extremely compact design. One key feature of these motors is their vibration quality, which often exceeds what is specified in international standards.

LOHER Vario PLUS – tough for extreme peak loadsAround the world, the LOHER product name enjoys an outstanding reputation for customized solutions, which can be designed to meet even the most unusual require-ments. The flexible engineering of this motor makes it a perfect fit for rolling mill applications. As a motor with a modular cooling system that features a high degree of reliability and efficiency, the LOHER Vario PLUS is avail-able in shaft heights up to 800 in low- and medium-volt-age versions according to customer and industry-specific requirements. An additional advantage for rolling mill applications is the fact that also the lower shaft heights – from 355 up to 560 – with shockproof, welded steel housing in a rib-cooled version are available in IC411 or IC416.

SIMOTICS HV M – speeds up project execution and offers maximum performance up to 18 MWWith SIMOTICS HV M motors in shaft height 800, Siemens continues its successful concept of modular high-voltage motors with steel enclosure to address higher power ratings. SIMOTICS HV M motors in shaft height 800 are available in 4- and 6-pole versions; this series goes up to 16 MW at 10 kV and up to 18 MW at 6 kV (at 50 Hz). As a consequence, also in this power class,

users benefit from the advantages of a modular high-volt-age motor concept. As a result of standardized production and testing processes, SIMOTICS HV M motors – shaft height 800 – set themselves apart as a result of short delivery times as well as high on-time delivery. SIMOTICS HV M with the corresponding high power ratings are now integrated in standard tools such as Sizer Web Engineering. This simplifies selection and configura-tion. On the mechanical design side, it is especially the optimized steel enclosure that offers advantages: It is optimized from a weight perspective, which simplifies transport and integration into plants and systems. It is also noise-dampened, which means that fewer noise pro-tection measures are required. The higher motor stiffness increases the reliability, even under extreme situations and in turn, plant and system availability. Versions of the SIMOTICS HV M specifically for rolling mills, shaft height 800, have torque ratings of up to 120 kNm. They com-pletely satisfy the requirements of this application as a result of the high overload capability and a wide field weakening range.

For certain rolling mill applications, Siemens offers other powerful drives, which in the balance between

cost effectiveness and process quality, represent the optimum rolling drive solution. The modular cooled

SIMOTICS HV H-compact PLUS, Vario PLUS and M (modular) high-voltage induction motors provide torques

of up to 120 kNm for rolling mill applications. Systems with SIMOTICS FD and SIMOTICS DP low-voltage motors

are admirably suited for coilers, shearing lines and roller tables in rolling mills.

H-compact PLUS

SIMOTICS HV, FD and DP | 17

Roller table motor

SIMOTICS HV M

Standard converter solutionsDepending on the rolling mill application, various convert-ers are available in conjunction with SIMOTICS HV series H-compact PLUS, Vario PLUS and M (modular). SINAMICS SM150 is used in the medium-voltage range. In the low-voltage range, SINAMICS S150 is employed, and – especially for coordinated drives – the SINAMICS S120 Cabinet Modules. As modular cabinet unit systems, the latter can be configured according to the modular princi-ple to create ready-toconnect drive solutions of several Megawatts. The typetested cabinet modules can be simply coupled together via the standard interfaces and installed. In this configuration, power can also be exchanged between motoring and generating drive axis via a common DC bus. Overall, you benefit from significantly lower energy usage.

Drive systems for coilers – to optimize down coiling and up coiling processOur harmonized drive systems for coilers in hot and cold rolling mills ensure that the strip thickness and strip sur-face of the wound coil always comply with the specified properties. In our drive systems for coilers, SIMOTICS FD motors, specifically designed for converter operation, and SINAMICS S120 Cabinet Modules low-voltage converters with a high dynamic performance operate perfectly together as team, therefore ensuring maximum precision when down and up coiling. The liquid-cooled version of the SINAMICS S120 Cabinet Modules is especially suitable for ambient air laden with dust and high ambient temper-atures. Further, these drive systems can be quickly and easily commissioned, are very reliable and require little maintenance. They also allow power to be exchanged between coilers operating in the regenerative mode when unwinding and coilers operating in the motoring mode when winding. This results in an improved energy balance for the complete plant.

Extremely rugged and precise: Drive systems for roller tables and other strip transport applicationsWe offer specific drive systems for roller table applica-tions, which also operate smoothly and precisely even under the most extreme conditions – for example, high ambient temperatures, high humidity as well as scale dust. SIMOTICS DP three-phase induction motors that are completely enclosed are used. Their spheroidal iron enclosure is especially rugged to withstand mechanical stress. In addition, the ring ribbed enclosure prevents the accumulation of scale dust. Torque reserves allow for high surge torques of up to 400%. The winding design of these SIMOTICS DP roller table motors is tailored to the voltages and frequencies of the SINAMICS G120 converter that controls them. Systems with steel plant motors are suit-able for transport applications, for example in the steel and aluminum industries, where there is no scale dust. Typical applications include transporting slabs to a reheating furnace, transporting plates to a cooling bed and drives for shearing lines, beam mills and runout roller tables. They can be operated directly on the line supply with a fixed speed, or controlled from a SINAMICS S120 to address processes requiring a high dynamic performance.

18 | Retrofit

Retrofit

Your productivity is our mission

We are your trusted partner when it comes to retrofits. Here, in a lot of cases, many components of the existing drive system

can be reused – and at the same time, your productivity is significantly increased. Whether cycloconverter or voltage-source

DC link converter: With special modernization packages using products from the SINAMICS family, we upgrade older

converters to bring them up to state-of-the-art technology, improve the production capacity, extend the life cycle of your

plant and accordingly reduce your maintenance costs. Our retrofit portfolio ranges from supplying spare parts, upgrading

by replacing individual components (complete closed-loop control and/or power unit) to replacing the complete unit.

Modernization of cycloconverter drive systemsIf you are dealing with decreasing productivity or higher maintenance costs, a retrofit utilizing a SINAMICS SL150 is the intelligent response to your concerns. Modernizing the closed-loop control allows your plant to be efficiently retrofitted. Replacing a SIMOVERT D with a SINAMICS SL150 is a straightforward process, even when it includes the power unit. If only the control cabinet is to be replaced, the power unit, motor and transformer of your existing drive system are kept and the lifetime of the components extended. The result is a medium-voltage converter, which is seamlessly integrated into your state-of-the-art plant. With such a closed-loop control retrofit, the closed-loop control

cabinet (SIMADYN D: 16 or 32 bit), the auxiliary power supply and the excitation unit are replaced. The thyristors in the previous units used to be controlled electrically, whereas the new generation is optically controlled. For this reason, thyristors of type 6QC6, SITOR adapters will be needed to facilitate communication between the SITOR modules and the Power Stack Adapter (PSA). SITOR adapter modules (optoelectric receiver) transform the optical signal into a bidirectional, electrical signal and vice versa as required. 6SD28 thyristor stacks require new PSAs as well as new TAS units (thyristor electronics).

SINAMICS control cabinet Auxiliaries Excitation unit Thyristor power unit L1 – L2 – L3

Closed-loop control upgrade including gating electronics in the power unit

Retrofit | 19

Power upgrade IGCT

Closed-loop control upgrade SINAMICS

SIMOVERT ML /MLT

- GTO - SIMADYN D

X X

SIMOVERT ML2

- IGCT - SIMADYN D

X

Power upgradeClosed-loop control upgrade including gating electronics in the power unit

SINAMICS closed-loop control cabinet Excitation unit GTO power unit and voltage DC link

Retrofitting SIMOVERT ML / ML2In many rolling mills, the predecessors of the SINAMICS SM150 are still in operation: SIMOVERT ML, MLT and ML2. For a drive retrofit it is often not necessary to replace the complete drive. In fact, motor, cabling, transformer, cabi-nets and a high percentage of the power units can be kept. This significantly reduces investment costs. The GTO (Gate Turn Off thyristors) stacks can be quickly and simply replaced by state-of-the-art air-cooled IGCT stacks.

The advantages of a SIMOVERT ML / ML2 retrofit• Long-term plant availability by using the latest genera-

tion of rugged IGCT technology for which long-term availability of spare parts will be ensured

• Minimum downtimes with the lowest possible interven-tion and modular replacement concept

• Lower component stress when replacing the reverse conducting GTOs (3.0 kA/3.5 kA GTOs) by larger IGCTs (4.0 kA IGCTs) and separate free-wheeling diodes

• A phased modernization concept is possible by chang-ing over to IGCT technology – GTO stacks that have been replaced can then be used for other GTO-based ML converters

Replacing GTO stacks with IGCT stacks has already proven to be successful in the field. For example, cold rolling mills in both the US and Germany have been changed over.

Closed-loop control retrofit for SIMOVERT ML / ML2A compatible, innovated control cabinet is available for retrofitting the closed-loop control from SIMADYN D- based SIMOVERT units. This is part of the SINAMICS family, and includes the same components as a new unit. The result: availability over the long term and the use of the same parts in new plants and systems.

Retrofit

SINAMICS SL150 cycloconverter technical data of the power unit with closed-loop control

20 | Retrofit

Power connection

Line voltage Air cooling: Water cooling: Frequency:

950 – 1,360 V 2,620 V 50 / 60 Hz +/– 2 %

Line power factor Approx. 0.8 depending on the operating speed

Connection from the top or bottom

Power rating

3.2 MVA – 36 MVA

Output voltage (motor)

1,500 V – 4,000 V Connection from the top or bottom

Converter circuit

Thyristor three-phase bridges in a 6-pulse circuit, 12-pulse circuit

Efficiency

> 99 %

Cooling

Forced-air cooling with integrated fans

Water cooling


IP21 Optional IP54 with fan and filter

Ambient conditions

Temperature: 5 °C up to +35 °C

Installation altitude: ≤ 1,000 m above sea level: load capability 100 % > 1,000 m to 4,000 m above sea level: current derating required > 2,000 m to 4,000 m above sea level: additional voltage derating required

Relative humidity: 5 % to 85 % (condensation not permissible)

Degree of pollution: 2 without conductive pollution acc. to DIN EN 61800 5 1 / VDE 0160 T105 (IEC 61800-5-1)

Closed-loop control

Vector control Vector control for synchronous or induction machines Speed control range down to standstill Wide field weakening range possible (constant power up to 1:4) Setpoint-actual value interface from the user closed-loop control to the basic closed-loop control: PROFIBUS Comprehensive protection and diagnostics concept for the highest degree of operational availability Degree of protection IP21 Optional IP54 with fan and filter ground fault evaluation device for the stator circuit (optional, also for the excitation circuit)Standards

IEC, EN, CE

Standard features

STARTER software for user-friendly commissioning and diagnostics at the PC

Selection of additional options

Increased degree of protection Anti-condensation heating Additional I/O modules User-friendly measured value and data acquisition Various cooling unit versions

Connec-tion Voltage Power Motor current

Air cooling

Trans-former (+10 %)

Motor 2) 100 %1) 100 %200 % 60 sec.

V V MVA A A6-pulse single connection(Dimensions in mm) Open

connec-tion2)

1,180 1,700

3.2 1,100 2,200

2,30

0

2,700 1,200600

4) 3605.9 2,000 4,0009.4 3,200 6,400

Star connection

3 x 950 1,5152.9 1,100 2,2005.2 2,000 4,0008.4 3,200 6,400

3 x 1,360 2,1906.3 1,650 3,3008.7 2,300 4,600

2 x 6-pulse parallel connection(Dimensions in mm)

Open connec-tion2)

2 x 1,180 1,700

10.6 3,600 7,200

360

2,30

0

2,700 1,2006002,700

4) 16.9 5,760 11,520

Star connection

6 x 950 1,5159.4 3,600 7,200

15.1 5,760 11,520

6 x 1,360 2,19011.4 3,000 6,000

15.7 4,150 8,300

12-pulse parallel connection(Dimensions in mm)

Open connec-tion2)

2 x 1,180 2 x 1,700

11.8 2 x 2,000 2 x 4,000

2,700 1,2006002,700

360

2,30

0

4) 18.8 2 x 3,200 2 x 6,400

Star connection

6 x 950 2 x 1,51510.5 2 x 2,000 2 x 4,000

16.8 2 x 3,200 2 x 6,400

6 x 1,360 2 x 2,19012.5 2 x 1,150 2 x 3,300

17.4 2 x 2,300 2 x 4,600

Water cooling

Trans-former (+10 %)

Motor 2) 100%1) 100%150% 60 sec.3)

V V MVA A A12-pulse series connection, “customized solutions” 2 x 1,310 4,000

12 1,800 2,700

18 2,700 4,050Parallel connection 2 x 6-pulse, 2 thyristors connected in series “customized solutions”

2 x 2,620 2 x 4,00024 2 x 1,800 2 x 2,700

36 2 x 2,700 2 x 4,050

1) For typical transformer and motor data as well as typical parameterization of the dynamic voltage reserve2) Commutating reactor not taken into account in the cabinet design3) Creeping: up to 10 consecutive cycles when starting4) The excitation and closed-loop control cabinet are included in the width and weight data

Retrofit | 21

22 | Drive solutions

Complete drive solution from one source

We can supply the complete drive train for rolling mill applications: perfectly

coordinated with one another, from the motor to the transformer, designed for

harsh rolling mill environments.

Support with industry know-howWe provide you with the highest level of expertise when selecting and implementing the optimum drive concept. As your trusted partner for rolling mill applications with many years of experience, we utilize this extensive know-how to meet your specific requirement profiles. In inten-sive dialog with you, we develop the optimum drive solution for your rolling mill.

Complete drive from one sourceWe implement the drive for your specific project, based on numerous versions and options. To achieve this, we link converter, rolling mill motor and transformer to cre-ate a perfectly coordinated system. You always profit from the optimum interaction between all of the components via the appropriate interfaces.

Also perfectly coordinated in the drive system: auxiliaries, oil and cooling system, excitation unit and transformer as well as an uninterruptible power supply. The software in the converter, which can be used to address customer-specific rolling mill applications, tech-nologically rounds off our drive solution.

Expertise through experience As a result of their many years of experience, our qualified experts ensure that your project runs smoothly and that the delivery is on time and in conformance with the speci-fication. When required, our specialists can also provide qualified installation supervision and commissioning services.

Our service: a long plant lifetime As partner to the rolling mill industry going back many years, Siemens offers a comprehensive range of innova-tive service concepts, which maximize the service life of the electric drives. Siemens can offer you a wide range of service contract options – adapted to your specific requirements. Our experts in the Metals Service & Support Centers are available around the clock. On request, we can clarify any issues that you may have via remote diag-nostics, or we can send our specialists to your site. With individual maintenance plans, we can play a significant role in securing the availability and therefore the produc-tivity of your rolling mill over its complete life cycle.

• Spare parts stock• Repair workshops• Plannend maintenance• Remote service capability• Support for software update and upgrade

ReferencesIncreased productivity, higher capacities, reduced operating costs and emissions: These are the factors that are

used as a basis to measure successful solutions in the rolling mill industry. A deep understanding of the industry

and a wealth of references make us the competent supplier of drive solutions. This is also demonstrated by

approximately 1,400 inverters (line or motor side) of the type SINAMICS SM150 IGCT and its predecessors,

SIMOVERT ML and SIMOVERT ML2, as well as 800 cycloconverters of the type SINAMICS SL150 and its predeces-

sor, SIMOVERT D. The references below from around the globe reflect our competence as supplier of complete

drive systems for rolling mills.

Customer: SMS-Siemag for Thyssen Krupp Stahl, Alabama, USA

Application: Hot strip rolling millScope of supply:

• 13 x SINAMICS SM150 (IGCT)• 50 x SINAMICS S120• 21 x MV motors• 320 x LV motors with auxiliary drives for

the coiler• 25 x GEAFOL transformers,

UL certifiedDrive solution for the hot strip rolling mill:

Power kW: Speed rpm:Slab press 4,400 90 – 608

Edgers 1+2 2 x 1,000 (1+2)

180 – 360 (1) 180 – 540 (2)

Rougher 2 x 4,250 25 – 60Reversing rougher

2 x 8,500 50 – 100

Crop shears 2 x 1,750 290 – 540Finishing mill 1–7

12,000 200 – 600

Coiler 1,450 400 – 1,350Result: Electrical drive equipment for a greenfield

projectTime period: Commissioning 2010

Customer: Voestalpine, Linz, AustriaApplication: Hot strip rolling millSolution:

Power:

Speed:Torque:

Retrofit of a twin drive, phased modernization project4 x (2 x 7,000 kW); 2 x (2x 3,800 kW); 1 x (2 x 8,200 kW)248/440 rpm; 225/400 rpm; 210/370 rpm2x 270 kNm; 2x 161 kNm; 2x 373 kNm

Result: Upgrading and adapting an existing rolling mill stand

Time period: Phased retrofit from 2001 – 2005

References | 25

Customer: Baosteel, Baoshan Iron & Steel Group, Shanghai, China

Application: Plate rolling mill

Solution:Power:Speed: Torque:Converter:

Twin drive for a plate rolling mill stand2 x 10,000 kW (2 x 25,000 kW for overload)50/120 rpm2 x 1,910 kNm (2 x 4,775 kNm for overload)SIMOVERT D

Time period: The plate rolling mill stand went into opera-tion in March 2005

Customer: ArcelorMittal Eisenhüttenstadt GmbH, Germany

Application: Hot strip rolling mill

Solution: 2 vertical edger mo-tors

1 twin revers-ing stand motor

5 finishing mill mo-tors

1 crop shears motor

1 coiler motor

Power (kW): Speed (rpm): Torque (kNm):

1,500 200 – 440 72

6,000 45 – 100 1273

6,400 200 – 600 306

1,250 600 20

700 200 – 600 33

Result: Supply of the complete main drives, Siemens general supplier for the electrical engineering and automation

Time period: Commissioned in 1997

Customer: SMS-Siemag project in Scandinavia

Application: Retrofit of a plate rolling mill

Scope of supply:

Drive system for a rougher with SMS-Siemag automation and Siemens drive technology:• 7,000 kW motor (1,114 kNm)

as twin configuration• SINAMICS SM150 IGCT• Excitation equipment and auxiliariesDrive system for a 2.6 MW / 3,000 rpm descaling pump:• SINAMICS GM150 IGBT• Auxiliaries

Result: Drive systems were replaced in close cooperation with SMS-Siemag Mechanik und Automation regarding the modernization and widening as well as increase in production. Scheduled downtime for the retrofit: 35 days

Time period: Start of installation, August 2012

Excitation unit: 2 x 2000 A

SINAMICS SM150 SINAMICS SM150

7 MW / 18 MW 1100 kNm / 2750 kNm

SYM SYM

7 MW / 18 MW 1100 kNm / 2750 kNm

Advantages:

For demanding challenges, Siemens offers the optimum, complete drive system from one source - as can be seen in this diagram of a plate rolling mill.

Drive solutions | 23

Siemens AG Process Industries and Drives Large Drives P.O. Box 47 43 90025 NUERNBERG GERMANY

Find out more:

siemens.com/ids

Subject to change without prior notice 03/15 Article-No.: E20001-A480-P500-V1-7600 Dispo 21503 D&M/66748 WS 03150.5 Printed in Germany © Siemens AG 2015

The information provided in this brochure contains merely general descriptions or characteristics of performance which in case of actual use do not always apply as described or which may change as a result of further development of the products. An obligation to provide the respective character-istics shall only exist if expressly agreed in the terms of contract. All product designations may be trademarks or product names of Siemens AG or supplier com-panies whose use by third parties for their own purposes could violate the rights of the owners.

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