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Phytron GmbH
Phytron Stepper Motors - Precision for challenging applications

Phytron Stepper Motors - Precision for challenging applications

Product catalog summary

Overview: Phytron stepper motors are engineered for precision in extreme environments, such as vacuum, cryogenic, high temperature, and radioactive conditions. They offer precise positioning without feedback encoders, making them ideal for applications like electron microscopes and paper production machines.

Specifications: These motors provide up to 1/512 step resolution, equating to 102,400 positions per revolution with a 200-step motor. They are suitable for various demanding applications.

Product Series:

ZSH: Offers up to IP 68 protection, available in sizes 57 to 107 mm.
phyBASIC: Known for high precision and smooth operation.
VSS/VSH: Vacuum stepper motors with optional cryo capabilities, sizes 19 to 125 mm.
DMP: Inertial damper for stepper motors.
ZSS: Precision motors with smooth operation, IP 40, sizes 19 to 56 mm.
phySPACE: Designed for space applications, sizes 20 to 57 mm.

Environmental Suitability: Designed for extreme conditions, including vacuums up to 10^-11 mbar, cryogenic environments down to -269°C, high temperatures up to +200°C, and radiation up to 106 J/kg.

Customization: Phytron offers tailored solutions, including custom housings, ceramic bearings, and rad-hard designs to fit specific applications.

Industrial Applications: The ZSS series is noted for high precision and smooth operation, suitable for demanding applications with an extended temperature range of -30 to +80°C. Options include gears, brakes, encoders, and custom shaft designs.

Technical Details: Detailed specifications for various motor models are provided, covering electrical and mechanical characteristics, connection types, and phase currents. Options for encoders, heat sinks, and motor brakes are also included.

Conclusion: Phytron stepper motors are robust, precise, and reliable, suitable for a wide range of industrial and extreme environment applications. Their focus on customization and quality assurance ensures products meet specific customer needs effectively.

ZSH Stepper Motor with Integrated Encoder E50: Designed for synchronous operation with controller pulses, ensuring precise motor rotation. It includes an integrated encoder for monitoring and controlling the load angle under extreme loads.

Special Characteristics:

Simple, robust, and cost-effective design.
No dimensional changes compared to standard versions, except for ZSH 56.
Integrated encoder within the motor housing, available up to IP68 protection class.
Meets mechanical and climatic conditions such as vibration, shock resistance, temperature, and humidity.
Compatible with Phytron controllers for step angle control and error signal generation.

Electrical Characteristics:

Supply voltage: 5 to 24 V DC.
Current consumption: approx. 35 mA (no load), max. 100 mA per output.
Operating temperature: -40 to 125 °C.
Outputs: 2 x 50 pulses per revolution, RS422 line driver, short circuit protected.

Technical Characteristics:

Optical encoder with supply voltage of 5 V DC.
Operating temperature: -40 to 100 °C.
Outputs: H200 with 2x200 pulses, H500 with 2x500 pulses per revolution.
RS422 line driver, short circuit protected, pulse frequency min. 100 kHz.

Mechanical Characteristics:

Stepper motors with PLE Planetary Gear offer low-backlash and high efficiency.
Torque shaft bearing with lifetime lubrication, suitable for -25 to +90 °C.
Protection class: IP 54, with optional angled gears.

Frequency Characteristics: Includes graphs showing torque as a function of frequency and speed for various supply voltages and motor configurations.

Applications: Suitable for vacuum environments, designed to avoid contamination and withstand extreme conditions, ideal for scientific and medical applications.

Ordering Information: Detailed ordering codes are provided for customization options, including protection class, connection type, and additional features like motor brakes and encoders.

VSS/VSH Series Overview: Designed for ultra-high vacuum environments, these motors are customizable for specific applications and manufactured in Germany.

Specifications:

2-phase stepper motors with holding torques from 3.4 mNm to 13 Nm.
Diameters range from 19 to 125 mm with a standard number of steps at 200.
Step accuracy is 5% for 1.8°.
Operating voltage varies by size: 70 VDC for sizes 19 to 57, and 120 VDC for sizes 80 to 126.
Outgassing holes are included to prevent trapped gas.

Options and Customization:

Available options include VGPL precision planetary gear, Harmonic Drive gear, thermocouple type KTC/Pt100 resistor sensor, resolver, and double shaft.
Custom solutions for aggressive environments, clean room applications (ISO 5), and motors with spindles.

Performance and Durability:

Used in high-profile projects like satellites and the Mars rover, known for accuracy, reliability, and durability.
Materials meet ECSS standards with TML < 1% and CVCM < 0.1%.
Motors are radiation-resistant, with UHV motors operable up to 106 J/kg.

Technical Features:

Un-lubricated ball bearings can cause cold welding; lubricated bearings with special vacuum grease are recommended.
Adhesives used are strong, ductile, and have low outgassing rates, compliant with space standards.
Temperature management includes thermocouples for monitoring, with materials able to withstand up to 300°C short-term.
Conditioning processes ensure minimal outgassing rates, achieving vacuums of 10^-11 hPa.

Design and Handling:

Structural elements are made of stainless steel with outgassing holes for rapid evacuation.
Motors should be handled in clean environments to prevent contamination.

Service and Support:

Phytron offers customization and support services to tailor motors to specific applications.

Configuration Guide:

Guidelines for selecting motor size and type based on torque, speed, and environmental conditions.
Derating and duty-cycle design considerations for vacuum applications to prevent overheating.

Tables and Graphs:

Detailed tables provide electrical and mechanical characteristics, dimensions, and performance metrics for various motor sizes.
Graphs illustrate temperature management and motor performance under different conditions.

Mechanical Characteristics: The document outlines the mechanical characteristics of Phytron's stepper motors, including types with low and standard backlash, suitable for extreme environments like ultra-high vacuum and cryogenic conditions.

Electrical Characteristics: Specifications include excitation amplitude and frequency, transformation ratio, rotor inertia, and mass. Resolver specifications emphasize a constant air gap design, reducing sensitivity to eccentricity and magnetic stray fields.

Temperature Sensors: Integrated insulated temperature sensors within the motor windings offer rapid response to temperature changes, using Type K thermocouples and Pt100 resistance temperature detectors.

Torque Characteristics: Graphs illustrate torque and power characteristics under different operating conditions, such as half-step mode and varying voltages.

Applications: Designed for use in particle accelerators, X-ray systems, electron microscopes, and other scientific and industrial applications, optimized for performance and cost efficiency in vacuum environments.

Customization Options: Extensive customization options are available, including modifications to performance features, housing, materials, and electronics.

Control Systems: The phyMOTIONTM controller is highlighted for managing in-vacuum applications, offering modular control and integration with various encoder types, supporting distributed control systems, and operable via Android-based interfaces.

Ordering Information: A detailed guide on ordering codes specifies options for vacuum class, shaft design, and other customizable features.

Catalog excerpts

Phytron Stepper Motors – Precision for challenging applications

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Precision and innovation for challenging applications Stepper motor technology is particularly suitable for precision applications under extreme environmental conditions. Whether vacuum, cryo environment, high temperature or under the influence of radioactivity - the Phytron motor series are tough and do precision work, because stepper motors can position very accurately without a fragile feedback encoder. Our control units perform, especially in applications that rely on very precise and smooth running behaviour. We control motors in electron microscopes, accelerator experiments or also in paper...

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Phytron Stepper Motors - Precision for challenging applications-3

INDUSTRIAL Environments Precise. Reliable. Dynamic. Phytron‘s STANDARD industrial motors are eminently suitable for applications in engineering and industry. Whether it‘s for the positioning of slides, the adjustment of pressure rollers or sensitive optics, the synchronised delivery and application of labels or for handling in mail sorting - fast and reliable running performances are constantly demanded. Precision, high torque and solid craftsmanship make our standard industrial motors an excellent choice for environments up to IP 50. Precision stepper motor with smooth running, IP 40, 19 to...

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Phytron Stepper Motors - Precision for challenging applications-5

ZSS Stepper Motors For Applications with Extended Temperature Range RoHS complient The proven 2-phase hybrid stepper motors series ZSS combine highest precision with smooth running characteristics. With up to 102.400 approachable positions (200-step motor, driven in micro stepping mode with 1/512 step resolution and encoder) the ZSS motor provides your application with highest precision positioning capabilities. Perfect-fit for your application: The ZSS serie differs from standard market motors by the extended ambient temperature range from -30 to +80 °C. • with encoder GPL low-backlash planetary...

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Phytron Stepper Motors - Precision for challenging applications-6

ZSS 19 to 33 with free wire ends ZSS 41 to 57 with protective cover Standard motor flange Dimensions / Electrical and Mechanical Characteristics Inductivity/ Phase Loads axial Detent torque Resistance/ Phase Mechanical Characteristics Rotor inertia Electrical Characteristics Standard 8-lead, motor connection see page 3 Holding torque in bipolar mode with parallel windings, two phases on rated current 3) The inductivity values apply for each single winding as well as for parallel connected windings. 4) ZSS 52, 56 and 57 with earthing screw on the terminal board. 2) Shaft diameter tolerances: ZSS...

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Phytron Stepper Motors - Precision for challenging applications-7

Electrical Connection / Connection Types / Phase Current Phase currents The Phytron stepper motors type ZSS are built in 8-lead windings (standard). For ZSS Phytron stepper motors, the rated current [A] per motor phase is printed on the rating plate. The last digits of the motor‘s type number define the rated current. Example: ZSS 32.200.1,2 The rated current is defined for full step operation, at bipolar control mode, with parallel connected motor windings. According to the connection mode, the motor windings receive different currents. Therefore, for identical power dissipation in the motor,...

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Phytron Stepper Motors - Precision for challenging applications-8

Option: Stepper Motor with Encoder The stepper motors ZSS 25 to ZSS 57 with mounted encoder are particularly suitable for use in control actuators or for system monitoring. • Motor connection by free wire ends • Encoder connection with flat cable with 10-pin connector • Protection class IP20 side view front view rear view Technical characteristics of the encoder Resolution: Output current: Output voltage: Supply current: Count frequency: Supply voltage:

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Phytron Stepper Motors - Precision for challenging applications-9

Option: Stepper Motor with Motor Brake For the stepper motors ZSS 32 to ZSS 57 a mounted 24 VDC permanent magnet motor brake is optionally available. ZSS 32 to 43: KEB 01: Power 8 W / nominal torque 0.4 Nm; electrical connection: free wire ends Power 10 W / nominal torque1 Nm; electrical connection: circular connector K M Side view Front view Dimensions in mm Motor brake Option: Stepper Motor with Heat Sink K1 ØP The ZSS stepper motors are also available with a mounted heat sink.Depending on the motor‘s mounting position, a heat sink with radial fins (K1) or axial fins (K2) can be selected. The...

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Phytron Stepper Motors - Precision for challenging applications-10

Option: Stepper Motor with GPL Low-Backlash Planetary Gear GPL 22 to 32 z1 Mass (motor and gear) in kg Stepper motor Mass without motor 1-stage Perm. radial load (center of shaft) Permissible axial load Protection Protection class class gear + motor Mass /Permissible Loads / Protection Class Gear

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Phytron Stepper Motors - Precision for challenging applications-11

GPL Gear Mechanical Characteristics Stepper Motor with GPL Gear • Stepper motor mounted gear • 1- to 3-stage planetary gear • Low gear backlash Mechanical gear characteristics Average mass inertia at output Torsional stiffness Emergency stop torque No-load backlash Emergency stop torque No-load backlash Reduction ratios Stepper motor - Standard: 20 to 50 arcmin - Low-backlash: 6 to 15 arcmin • Maximum permanent torque 0.1 to 38 Nm • 100% permissible short-term overload • Adapted for permanent, alternate or intermittent operation • Ideal for combinations with toothed belt modules • 4:1 to 256:1...

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Phytron Stepper Motors - Precision for challenging applications-12

ZSS Stepper Motor with HD Gear The Harmonic Drive® gears are based on a totally new operating principle. The transmission force is exerted by a resilient deformable toothed steel cylinder flexspline which transmits the motor rotation to the drive shaft. Drive shaft and output shaft direction is are opposed. Backlash and torsional stiffness Harmonic Drive® gears have particularly low backlash. In practice, the tooth-contour backlash can be neglected (see page 9). The total gear torsion is equal to the sum of ½ backlash + torque/resillient constant. HD Gear with mounted stepper motor ZSS 25 to...

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Phytron Stepper Motors - Precision for challenging applications-13

Mass inertia of the motor: see page 2. Note: Motor dimensions and technical data: see page 2. 1) Spring constant Permissible bearing load axial Permissible bearing load radial Rotor mass inertia 1) Max. permissible off drive torque Reduction ratio Mass motor with gear Stepper motor Dimensions and Mechanical Characteristics

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