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EMMS-ST-57-S-SE-G2
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Specification & Description
| Specification | Description |
|---|---|
| Part Number | EMMS-ST-57-S-SE-G2 |
| Alternative Part Number | EMMSST57SSEG2 |
| Manufacturer | Festo |
| Motor Type | Stepper Motor |
| Nominal Voltage | 48 V DC |
| Nominal Current | 5 A |
| Max. Rotational Speed | 2,720 rpm (theoretical max. rotational speed while idling at nominal voltage) |
| Holding Torque | 0.8 Nm |
| Stepper Angle | 1.8 ±5% |
| Winding Resistance | 0.15 ±10% Ω |
| Winding Inductance | 0.5 mH |
| Output Mass Moment of Inertia | 0.29/0.30 kgcm² (with brake) |
| Radial Load on Shaft | 52 N |
| Axial Load on Shaft | 10 N |
| Mass Moment of Inertia of Rotor | 0.29 kgcm² |
| Brake Operating Voltage | 24 ±10% V DC |
| Brake Power | 8 W |
| Brake Holding Torque | 0.4 Nm |
| Brake Mass Moment of Inertia | 0.01 kgcm² |
| Response Delay | 2/6 ms |
| Separation Time | 10 ms |
| Encoder Type | Incremental |
| Encoder Measuring Principle | Opto-electrical |
| Pulses/Revolution | 500 1/rev |
| Encoder Interface | RS422, TTL, AB channel, zero index |
| Encoder Operating Voltage | 5 V DC |
| Protection Class | Motor Shaft: IP54, Motor Housing: IP65 |
| Ambient Temperature | –10 … +50 °C |
| Storage Temperature | –20 … +70 °C |
| Relative Air Humidity | 0 … 85% (non-condensing) |
| Certification | c UL us - Recognized (OL), RCM trademark |
| Materials Compliance | RoHS-compliant |
The Festo EMMS-ST-57-S-SE-G2 is a high-performance stepper motor renowned for its precision and reliability in a variety of industrial applications. This motor is part of Festo's EMMS-ST series, which utilises 2-phase hybrid technology to deliver exceptional control and accuracy in motion tasks. With a nominal voltage of 48 V DC and a nominal current of 5 A, this stepper motor is designed to meet the demanding requirements of modern automation systems.
The EMMS-ST-57-S-SE-G2 features a holding torque of 0.8 Nm and a maximum rotational speed of 2,720 rpm, making it suitable for applications requiring both speed and holding power. The motor's stepper angle is 1.8 ±5%, ensuring precise positioning with each step. Additionally, the motor is equipped with an integrated encoder, providing feedback for closed-loop control and enhancing performance by preventing step losses and correcting current following errors.
This model boasts a robust construction with a protection class of IP54 for the motor shaft and IP65 for the motor housing, ensuring durability and resistance to dust and moisture in harsh industrial environments. The ambient operating temperature range of –10 to +50°C allows for reliable operation across various working conditions.
The EMMS-ST-57-S-SE-G2 is also RoHS-compliant, adhering to environmental standards and regulations. Its compatibility with a range of Festo gear units, motor controllers, and power supply units makes it a versatile component for system integrators and engineers looking to build or upgrade their automation solutions.
With its combination of performance, precision, and robustness, the Festo EMMS-ST-57-S-SE-G2 stepper motor is an excellent choice for applications such as CNC machinery, automated assembly lines, and precision positioning systems.
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Frequently Asked Questions
What are the key features of this stepper motor?
The stepper motor is a 2-phase hybrid technology unit with optional integrated encoder for closed-loop control and optional holding brake. It boasts a protection class of IP54, making it suitable for various industrial applications.
Can this stepper motor be used with a gear unit?
Yes, it can be paired with a planetary gear unit, specifically designed for compatibility with this motor size, offering various gear ratios and featuring life-time lubrication.
What are the environmental operating conditions for this stepper motor?
The motor is designed to operate within an ambient temperature range of –10 to +50°C and can be stored in temperatures ranging from –20 to +70°C. It also has an insulation protection class of B and a rated class of S1 according to EN 60034-1.
What type of encoder is integrated with this stepper motor?
The motor optionally comes with an integrated optical encoder that operates on a 5V DC supply, providing 500 pulses per revolution and featuring an RS422 protocol line driver.
What is the maximum rotational speed of this stepper motor?
The maximum rotational speed of the motor varies depending on the model size and voltage supply, but it is designed to achieve high speeds, with theoretical maximums while idling at nominal voltage.
How does the protection class of this motor benefit its operation?
With a protection class of IP54 for the motor shaft and varying for the motor housing, the stepper motor is well-protected against dust ingress and water splashes, enhancing its durability and suitability for challenging industrial environments.
What are the power requirements for the brake option of this stepper motor?
The holding brake, if present, operates on a 24V DC supply with a power consumption of 8 to 11 watts, depending on the motor size, and provides a reliable stopping and holding function.
Can this stepper motor be used with a motor controller?
Yes, it is designed to be used with a compatible motor controller, such as the CMMS-ST, which allows for precise control over position, speed, and torque, and corrects for any current following errors.
What types of loads can this stepper motor handle?
The motor is capable of handling both radial and axial loads on its shaft, with the capacity varying by size. This makes it versatile for different mounting orientations and operational demands.
Is the stepper motor RoHS-compliant?
Yes, the stepper motor adheres to RoHS standards, ensuring that it is manufactured with a restriction on the use of certain hazardous substances in electrical and electronic equipment.
