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

Voltage class 400 VAC
Input voltage range 180 .. 528 VAC

Device type	Mains voltage	Output power (kW)	Output apparent power (kVA)	Output current (A)	Max. output current (A)	HxWxD (mm)	Weight	Cooling
0369x71AF0200	3 x 400 VAC	97 kW	114 kVA @ 16 kHz	165 A @ 16 kHz ³⁾	165	685 x 388 x 188	30 kg	Water ¹⁾
0369x71BF0000	3 x 400 VAC	72 kW	83 kVA @ 16 kHz	120 A @ 16 kHz	120	656 x 545 x 218	34 kg	Air
0369x73AF0200	3 x 400 VAC	150 kW	177 kVA @ 16 kHz	255 A @ 16 kHz	255	771 x 439 x 207	43 kg	Water ¹⁾
0369x73BF0200	3 x 400 VAC	180 kW	215 kVA @ 16 kHz	310 A @ 16 kHz	310	771 x 439 x 207	43 kg	Water ¹⁾
0369x73CF0000	3 x 400 VAC	115 kW	132 kVA @ 16 kHz	190 A @ 16 kHz	190	746 x 629 x 273	54 kg	Air
0369x73DF0000	3 x 400 VAC	130 kW	152 kVA @ 16 kHz	220 A @ 16 kHz	220	746 x 629 x 273	54 kg	Air
0369x75AF0100	3 x 400 VAC	285 kW	333 kVA @ 16 kHz	480 A @ 16 kHz	480	1317 x 336 x 489	94 kg	Water ²⁾
0369x75BF0100	3 x 400 VAC	365 kW	436 kVA @ 16 kHz	630 A @ 16 kHz	630	1317 x 336 x 489	94 kg	Water ²⁾
0369x75CF0000	3 x 400 VAC	205 kW	236 kVA @ 16 kHz	340 A @ 16 kHz	340	1317 x 684 x 374	133 kg	Air
0369x75DF0000	3 x 400 VAC	265 kW	308 kVA @ 16 kHz	445 A @ 16 kHz	445	1317 x 684 x 374	133 kg	Air
0369x76BF0200	3 x 400 VAC	490 kW	554 kVA @ 8 kHz	800 A @ 8 kHz	800	1478 x 353 x 596	136 kg	Water ¹⁾

1) Cooling pipes aluminum
2) Cooling pipes copper
0369x: Variant 1 = CAN-Bus / Modbus RTU, Variant 2 = EtherCAT + CAN-Bus / Modbus RTU

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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[Translate to Englisch:] Frequenzumrichter SD2M Turbo

Frequency Converter SD2M Turbo

The Booster

SIEB & MEYER frequency inverters are specially designed for high-speed applications and use the three-level technology - also called multi-level technology - which is very advantageous in these applications.

As a rule, no motor filter elements are required when using our SD2M Turbo inverter series. This is due not only to the three-level technology, but also to the fact that we supply PWM switching frequencies of up to 16 kHz as standard. The combination results in a significantly improved motor current quality, which extremely reduces the unwanted rotor losses - by up to 90 %!

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