Frequency Converter SD2M Turbo

Standard converters in the higher power classes typically use the well-known technology of two-level pulse width modulation (PWM) with max. 8 kHz switching frequency. In most high-speed applications, this requires additional components such as LC filters or chokes to minimize the additional losses in the engine.

Manuals, Software, Certificates, Tutorials

Highlights

Three-Level Technology

Function:
The output stages of SD2M Turbo are based on a three-level technology and provide rotating field frequencies up to 2,000 Hz with switching frequencies of 16 kHz.

Advantage:
Reduced motor losses combined with minimum efforts for motor filters and motor chokes as well as low interfering radiation and insulation stress.

Benefit:
Low system costs over the whole product life cycle.
Efficiency

Function:
The devices reach efficiencies of up to 98 %.

Advantage:
The high efficiency of the devices ensures optimal system efficiencies and reduces cooling requirements.

Benefit:
Maximum system output and lower environmental footprint due to lower energy consumption.
DC Supply

Function:
Active emergency braking and maintenance of voltage supply in case of power supply failure.

Advantage:
No separate voltage supply for the magnetic bearings needed.

Benefit:
Protection of the magnetic bearings in case of power failure as well as cost savings.

Technology/ System-Property	SD2M Three-level PWM	Standard converter Two-level PWM with motor choke	Standard converter Two-level PWM with LC filter
Low weight				✓	X	X
Small installation space				✓	X	X
No risk of resonance effects				✓	✓	X
Total costs	✓	X	X

Motor Currents by Comparison

Good to Know

Currently available power classes from 100 to 500 kVA, with up to 800 Arms rated current
Liquid cooling as standard (water-based), air cooling on request
NRTL/CSA certified.
Reducing the switching PWM amplitude by 50 % leads to very low insulation stress of the motor - even when using long motor cables (see diagram below)
Optional DC voltage supply for active magnetic bearings via internally fused terminals (intermediate DC circuit)
Designed for 100 % load 24/7
All power components are designed for 10 years continuous operation at nominal load
Designed for worldwide 3-phase supply networks - also IT grids without grounding
Efficient software drivemaster2 for parameterization and diagnosis
Customized solutions can be realized
3C3 protective coating of the PCBs for operational reliability in aggressive environments

The Interfaces of Frequency Converter SD2M for Turbo Applications

USB connection, parameterization, diagnosis and operation
RS232 / RS485 / CAN interface / Modbus
2 analog reference value interfaces: +/-10 V, 2 analog outputs: 0 to 10 V
Universal Motor Encoder Interface: Hall sensor, linear Hall sensor, magnetoresistive sensor, NAMUR sensor (pulse generator), Sin/Cos encoder
9 digital inputs and 5 digital outputs
Liquid cooling
Safety integrated "STO": Restart lock to meet category 4/PL e according to EN ISO 13849-1:2015 and EN 61508:2010 SIL3
Motor connection
2 TTL encoder inputs and outputs
Power supply

Drive Functions and Safety Functions

SVC

V/f PWM

Servo

STO

Software for Initial Operation and Parameterization: drivemaster2

Parameterization

Tree-type structure
Block diagrams
Graphics
Interactive help messages
Comments
„Parameter-Wizard“

Operation

Without higher-ranking control
Visualized reference and actual values
Error and status messages

Diagnosis

4-channel oscilloscope
Zoom functions
Trigger functions
Long-term recording function
Measurements can be saved
Diagnosis of the inputs and outputs
Bus monitor

Technical Specifications SD2M Turbo
with 3-phase AC Mains Voltage without Break Chopper

Device type	Rated power¹	Rated current	Max. output voltage¹	HxWxD (mm)	Weight	Cooling
Compact devices - 3 x 200...480 VAC mains voltage
0369171AF0200	100 kVA	165 A_rms	3 x 410 VAC	685 x 388 x 188	30 kg	Water ^{2) 4)}
0369173AF0200	150 kVA	255 A_rms	3 x 410 VAC	771 x 439 x 207	43 kg	Water ^{2) 4)}
0369173BF0200	190 kVA	310 A_rms	3 x 410 VAC	771 x 439 x 207	43 kg	Water ^{2) 4)}
0369175AF0100	300 kVA	480 A_rms	3 x 410 VAC	1317 x 326 x 498	94 kg	Water ^{2) 3)}
0369175BF0100	396 kVA	630 A_rms	3 x 410 VAC	1296 x 424 x 359	94 kg	Water ^{2) 3)}
0369276BF0200	500 kVA	800 A_rms	3 x 410 VAC	1478 x 353 x 596	136 kg	Water ^{2) 3)}

1) Rated power and max. output voltage for mains voltage/supply voltage (in italic)
2) Aluminum cooling pipes
3) Copper cooling pipes
4) Air-cooled versions and versions with other cooling pipe materials on request

Applications

In the field of turbomachines, the system's efficiency can be continuously improved by increasing the system speed or omitting the gear.

Compressed Air Production
Due to their design, a large number of technologies in the field of waste energy usage or mechanical energy storage require high-speed motors and generators

Wastewater Treatment
Rotary atomization processes, e.g. applied for the production of milk powder or flue gas treatment, require high circumferential speeds. Therefore, it is necessary to use matching high-speed motors instead of low-speed standard motors.

Atomizer
Refrigeration units with turbo or centrifugal compressors with higher power ranges operate with high speeds. Frequency converters by SIEB & MEYER easily provide the required speeds and their control method ensures an exceptionally low rotor heating.

Refrigeration and Air Conditioning

News

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