This document provides detailed technical specifications and performance data for the KRT Series Torque Motors manufactured by SINADRIVES GmbH. The series includes models KRT010, KRT020, KRT030, KRT040, and KRT050, each with multiple winding types and sizes tailored for various torque and speed requirements.

1. Overview and Innovation

The KRT Series torque motors are 3-phase synchronous iron core motors designed for high-performance applications. They operate at maximum voltages up to 380 V AC rms (600 V DC) depending on the model. The document emphasizes innovation and excellence in motor design.

2. Performance Specifications

• Torque: Ultimate torque ranges from 0.64 Nm (KRT010 smallest) up to 183 Nm (KRT050 largest). Peak torque and continuous torque values are provided for each winding type and model, measured at specified temperature conditions.
• Speed: Maximum speeds vary by model and voltage, with some motors capable of speeds up to 28,000 rpm at maximum voltage.
• Torque Constant (Kt): Motor torque constants range from 0.06 Nm/Arms to 10 Nm/Arms, indicating torque per unit current.
• Motor Constant (Km): Values indicate efficiency and power conversion, ranging from 0.002 to 4.26 (Nm)^2/W.

3. Electrical Characteristics

• Current Ratings: Ultimate, peak, and continuous current ratings are specified for magnets and coils at various temperatures (25ºC, 70ºC, 100ºC).
• Back EMF: Phase-to-phase back electromotive force (EMF) values are given both as peak and RMS voltages per krpm, with tolerances of ±10%.
• Coil Resistance and Inductance: Resistance per phase and inductance values are provided at 25ºC, along with electrical time constants (τe) in milliseconds.
• Poles: Number of magnetic poles varies by series, from 8 poles (KRT010) up to 36 poles (KRT050).

4. Thermal Parameters

• Continuous Power Loss: Power losses in coils at 100ºC are listed, ranging from 53 W to over 2500 W depending on model size.
• Thermal Resistance: Thermal resistance from coils to mounting surface is specified, indicating cooling efficiency.
• Temperature Sensors: Motors include PTC 1kΩ or NTC sensors for temperature cut-off and monitoring.

5. Mechanical Data

• Dimensions: Stator outer diameters range from 65 mm (KRT010) to 160 mm (KRT050). Rotor inner diameters and rotor inertia values are also provided.
• Mass: Total motor mass excluding cables ranges from 0.18 kg to 5.5 kg.
• Cabling: Power cables are typically 0.5 m in length with specified wire gauges (AWG) and number of lead wires.

6. Model Series Summary

• KRT010 Series: Smallest motors with ultimate torque up to 11 Nm and max speed up to 28,000 rpm.
• KRT020 Series: Mid-range motors with torque up to 15.7 Nm and max speed up to 23,000 rpm.
• KRT030 Series: Larger motors with torque up to 56 Nm and max speed up to 6,890 rpm.
• KRT040 Series: High torque motors up to 110 Nm with max speeds around 3,500 rpm.
• KRT050 Series: Largest motors with torque up to 183 Nm and max speeds up to 2,145 rpm.

7. Notes and Disclaimers

All technical data is subject to change without notice. The information is current at the time of printing but not legally binding. Users are advised to verify data before application.

8. Contact Information

SINADRIVES GmbH, Frankfurt, Germany and SINADRIVES Spain / SAIN AUTOMATION SOLUTIONS S.L, Girona, Spain provide contact details for inquiries.

Critical Information Highlights:

• Maximum voltage ratings: 380 V AC rms (600 V DC max).
• Torque and speed ratings vary significantly by model and winding type.
• Thermal management includes power loss data and thermal resistance values.
• Electrical parameters such as coil resistance, inductance, and back EMF are essential for drive design.
• Mechanical dimensions and mass are critical for integration into systems.