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Catalogue SKA DDR frameless version direct drive torque motor.

Catalogue SKA DDR frameless version direct drive torque motor.

Product catalog summary

Overview

The SKA DDR series by Motor Power Company s.r.l. consists of frameless and Power Pack permanent magnet synchronous brushless torque motors designed for direct drive applications. These motors eliminate mechanical transmission components, offering high torque density, precise control, and robust thermal protection. They cover stall torque ranges from 2 Nm up to 760 Nm, with peak torques reaching 2400 Nm depending on the model.

Key Features and Advantages

Direct Drive technology removes gearboxes, belts, and other mechanical parts, eliminating backlash, friction, and inertia limitations.
Improved throughput, reliability, motion linearity, precision, and noise reduction.
Distributed power and motion control intelligence simplifies machine design and assembly.
Energy savings and cost reduction through efficient motor design.
Thermal protection via normally closed thermal cut-off devices rated for 130°C operation.

Product Versions and Configurations

Frameless motors (rotor and stator only for integration).
Power Pack versions with male shaft or hollow/through hollow shaft.
Options include various flange sizes, bearings, safety brakes, Hall sensors, resolvers, TTL-SinCos optical encoders, magnetic and optical ring encoders, and connectors for power and signals.

Technical Specifications

Motors are rated for operation at 80°C with ambient temperatures between 0-40°C and natural ventilation. Typical pole count is 14 or 56 depending on series. Insulation class is F.

Torque and Speed: Stall torque ranges from 2 Nm (model 090.30) to 760 Nm (model 430.180). Peak torque can reach up to 2400 Nm. Speed ranges vary from 50 rpm to 2400 rpm depending on motor size and winding.
Electrical Characteristics: Voltage constants (Ke) range from 96 Vrms/krpm to 5700 Vrms/krpm. Torque constants (Kt) vary from 1.04 to 68.4 Nm/Arms. Phase-to-phase resistance and inductance vary widely, with electrical time constants typically between 2 ms and 25 ms. Stall and peak currents are specified per model and winding.
Mechanical Data: Motor lengths range from 60 mm to 235 mm. Rotor weights vary from 0.63 kg to 48.3 kg; stator weights from 1.35 kg to 90.5 kg. Rotor inertia values (0.3894 to 1.2430 kg·m²) and maximum theoretical acceleration (1176 to 1931 rad/s²) are provided for dynamic performance assessment.

Thermal Protection Details

Thermal cut-off devices are normally closed (NC), rated at 250 Vac and 2.5 A.
Operating temperature: 130°C ±5%; resetting temperature: 100°C ±15%.
Response time approximately 1 ms.
Insulation class F ensures motor durability under rated conditions.

Performance Curves

Torque versus speed graphs are provided for various models, delineating continuous and intermittent duty areas to guide proper motor selection and application design.

Connection and Wiring

Standard wiring includes three phases (U, V, W), protective earth (PE), thermal protector line, and Hall sensor signals with detailed pin assignments and color codes.
Thermal protection integration is critical for motor safety and longevity.

Ordering Information

Ordering codes specify motor model, winding type, connector options, and sensor configurations (e.g., optional Hall sensors).

Summary of Motor Series and Ratings

SKAddr 148 Series: Torque range 30-120 Nm; stall torque 41-115 Nm; peak torque up to 458 Nm.
SKAddr 245 Series: Torque range 30-120 Nm; stall torque 41-115 Nm; peak torque up to 458 Nm; power loss 182-275 W; thermal resistance 0.38-0.58 °C/W.
SKAddr 335 Series: Torque range 30-150 Nm up to 320 Nm; stall torque 100-320 Nm; peak torque 290-1290 Nm; power loss 315-490 W; thermal resistance 0.21-0.33 °C/W; motor constant Km up to 14.4 Nm/√W.
SKAddr 430 Series: Stall torque up to 760 Nm; peak torque up to 2400 Nm; power loss 450-745 W; thermal resistance 0.14-0.23 °C/W.

Recommendations and Usage Notes

Respect continuous and intermittent duty limits to avoid motor damage.
Ensure proper connection and monitoring of thermal protection devices.
Select motor size and winding type based on required torque, speed, and supply voltage.
Consider mechanical dimensions and rotor inertia for precise integration and dynamic response.
Operating temperature range is 0 to 40°C; exceeding this may affect performance and insulation.

Manufacturer Contact

Motor Power Company s.r.l.
Reggio Emilia, Italy
Tel: +39 0522 682710
Fax: +39 0522 683552
Website: www.motorpowergroup.com

Catalog excerpts

Catalogue SKA DDR frameless version direct drive torque motor.-1

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Catalogue SKA DDR frameless version direct drive torque motor.-2

SKA Direct Drive Rotative Torque motors “Multipoles” permanent magnet synchronous brushless motors. The SKA DDR series is available in the Frameless version formed by the rotor and stator parts alone so that it can be integrated into machines. A Power Pack version is also available, with flange, bearings feedback and connections. m 2Nm to 760Nm stall torque m Thermal protector (clixon) m Class F insulation m IP65 protection degree (Power Pack solution) All SKA motors feature these advantages of Direct Drive technology: SKA motors replace all transmission mechanical components (like gearboxes,...

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Catalogue SKA DDR frameless version direct drive torque motor.-3

FRAMELESS VERSION Peak Torque (NmPk) Data are rated at rT =80°C , 0-40°C environmental temperature - Class F insulation. Performances are rated with natural ventilation

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Catalogue SKA DDR frameless version direct drive torque motor.-4

Product name Hall Sensor 00 Without Hall Sensors (standard) 01 With Hall Sensors (optional) Rotor Stator

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Catalogue SKA DDR frameless version direct drive torque motor.-5

TORQUE MOTORS SKAddr FL 01 TYPE: HALL SENSOR NOMINAL VOLTAGE NOMINAL CURRENT WORKING TEMPARATURE ELECTRONIC TYPE N° OF COMMUTATION SIGNAL COMMUTATION SENSOR SEQUENCE COMMUTATION SIGNAL WITH RELATIVE PHASE VOLTAGE IN THE COUNTER CLOCKWISE SIDE TRANSDUCER. TRANSDUCER CONNECTION POWER CONNECTOR HALL SIGNAL CABLE PIN FUNCTION POWER FUNCTION COLOR CN PHASE U PHASE V PHASE W GND THERMAL PROTECTOR THERMAL PROTECTOR RED BLUE BLACK WHITE GREEN GREY BROWN YELLOW PINK Motor Power Company s.r.l. - Reggio Emilia - Italy Tel +39 0522 682710 – Fax +39 0522 683552 www.motorpowergroup.com

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Catalogue SKA DDR frameless version direct drive torque motor.-6

TORQUE SERVOMOTORS Insulation class Type of thermal cut-off Operative time Insulation class *Drive main voltage needed to supply the full peak torque Motor Power Company s.r.l. - Reggio Emilia - Italy Tel +39 0522 682710 - Fax +39 0522 683552

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Catalogue SKA DDR frameless version direct drive torque motor.-7

TORQUE SERVOMOTORS Vn drive 230 V (ac) 3phase Vn drive 400 V (ac) 3phase COMMON RATINGS Voltage constant ± 5% Poles number Temperature range MOTOR SPEED [ Nm ] [ Nm ] [Nm/Arms] [Arms] [Arms] [Ohm] [mH] [msec] [W] [°C/W] [Nm/√W] THERMAL PROTECTION MOTOR RATINGS SKAddr 090 90 Stall torque Peak torque Torque constant ± 5% Stall current Peak current Phase/phase res. ± 5% a 20°C Phase/phase inductance Electrical time constant Power loss Thermal resistance Motor constance Insulation class Stall torque Peak torque Torque constant ± 5% Stall current Peak current Phase/phase res. ± 5% a 20°C Phase/phase...

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Catalogue SKA DDR frameless version direct drive torque motor.-8

Stator weight Rotor inertia A = Phase U B = Phase V C = Phase W H =PE F = Thermal Prot. G = Thermal Prot. Power Elements Motor Power Company s.r.l. – Reggio Emilia Italy – +39 0522 682710 – Fax +39 0522 683552 Wiring diagram Rotor weight Motor lenght MECHANICAL DATA Frameless series

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Catalogue SKA DDR frameless version direct drive torque motor.-9

TORQUE MOTORS SERIES Performance Curves 1 – Continuous Duty Area 2 – Intermittent Duty Area Motor Power Company s.r.l. - Reggio Emilia Italy - +39 0522 682710 - Fax 0522 683552 www.motorpowergroup.com

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Catalogue SKA DDR frameless version direct drive torque motor.-10

TORQUE SERVOMOTORS Vn drive 230 V (ac) 3phase Vn drive 400 V (ac) 3phase COMMON RATINGS Voltage constant ± 5% Poles number Temperature range MOTOR SPEED [ Nm ] [ Nm ] [Nm/Arms] [Arms] [Arms] [Ohm] [mH] [msec] [W] [°C/W] [Nm/√W] MOTOR RATINGS SKAddr 148 30 Stall torque Peak torque Torque constant ± 5% Stall current Peak current Phase/phase res. ± 5% a 20°C Phase/phase inductance Electrical time constant Power loss Thermal resistance Motor constance Insulation class Stall torque Peak torque Torque constant ± 5% Stall current Peak current Phase/phase res. ± 5% a 20°C Phase/phase inductance Electrical...

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Catalogue SKA DDR frameless version direct drive torque motor.-11

TORQUE SERVOMOTORS WINDING TYPE Vn drive 230 V (ac) 3phase Vn drive 400 V (ac) 3phase COMMON RATINGS Voltage constant ± 5% Poles number Temperature range MOTOR SPEED [ Nm ] [ Nm ] [Nm/Arms] [Arms] [Arms] [Ohm] [mH] [msec] [W] [°C/W] [Nm/√W] SKAddr 148 90 Stall torque Peak torque Torque constant ± 5% MOTOR RATINGS Stall current Peak current Phase/phase res. ± 5% a 20°C Phase/phase inductance Electrical time constant Power loss Thermal resistance Motor constance Insulation class Stall torque Peak torque Torque constant ± 5% Stall current Peak current Phase/phase res. ± 5% a 20°C Phase/phase inductance...

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Catalogue SKA DDR frameless version direct drive torque motor.-12

A = Phase U B = Phase V C = Phase W H = Ground F = Thermal Protection. G = F Power Elements Motor Power Company s.r.l. – Reggio Emilia Italy – +39 0522 682710 – Fax +39 0522 683552 Wiring diagram MECHANICAL DATA Motor length Rotor weight Stator weight Rotor inerzia Max theoretical acceleration Frameless series

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Catalogue SKA DDR frameless version direct drive torque motor.-14

TORQUE SERVOMOTORS Vn drive 230 V (ac) 3phase Vn drive 400 V (ac) 3phase COMMON RATINGS Voltage constant ± 5% Poles number Temperature range [ Nm ] [ Nm ] [Nm/Arms] [Arms] [Arms] [Ohm] [mH] [msec] [W] [°C/W] [Nm/√W] MOTOR SPEED THERMAL PROTECTION MOTOR RATINGS SKAddr 245 30 Stall torque Peak torque Torque constant ± 5% Stall current Peak current Phase/phase res. ± 5% a 20°C Phase/phase inductance Electrical time constant Power loss Thermal resistance Motor constance Insulation class Stall torque Peak torque Torque constant ± 5% Stall current Peak current Phase/phase res. ± 5% a 20°C Phase/phase...

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Catalogue SKA DDR frameless version direct drive torque motor.-15

TORQUE SERVOMOTORS WINDING TYPE Vn drive 230 V (ac) 3phase Vn drive 400 V (ac) 3phase COMMON RATINGS Voltage constant ± 5% Poles number Temperature range SPEED MOTOR [ Nm ] [ Nm ] [Nm/Arms] [Arms] [Arms] [Ohm] [mH] [msec] [W] [°C/W] [Nm/√W] THERMAL PROTECTION MOTOR RATINGS SKAddr 245 90 Stall torque Peak torque Torque constant ± 5% Stall current Peak current Phase/phase res. ± 5% a 20°C Phase/phase inductance Electrical time constant Power loss Thermal resistance Motor constance Insulation class Stall torque Peak torque Torque constant ± 5% Stall current Peak current Phase/phase res. ± 5% a 20°C...

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