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Siemens
1FK7044-4CF71-1CH2
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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 1FK7044-4CF71-1CH2 |
| Manufacturer | Siemens |
| Motor Type | Permanent-magnet synchronous motor |
| Rated Speed | 3000 RPM |
| Rated Torque | 3.7 Nm |
| Maximum Torque | 13.0 Nm |
| Rated Current | 3.2 A |
| Stall Current (100 K) | 4.5 A |
| Stall Current (60 K) | 3.75 A |
| Voltage Constant at 20º C | 72.0 V/1000 RPM |
| Winding Resistance at 20º C | 1.49 Ω |
| Rotating Field Inductance | 18.8 mH |
| Shaft Torsional Stiffness | 7900 Nm/rad |
| Mechanical Time Constant | 0.44 ms |
| Thermal Time Constant | 12.60 ms |
| Inertia | 1.620 kgcm² |
| Net Weight | 8.0 kg |
| Cooling | Natural cooling |
| Degree of Protection | IP65 and DE flange IP67 |
| Shaft End | Plain shaft |
| Encoder System | Encoder AM24DQI: absolute encoder 24 bits + 12 bits multi-turn |
| Holding Brake | Permanent-magnet brake, 4.0 Nm holding torque |
| Connector Size | Rotatable connectors for signals and power |
| Colour of Housing | Standard (Anthracite RAL 7016) |
| Optimum Power | 1.2 kW |
| Maximum Inverter Current | 15 A |
| Maximum Permissible Speed (Mech.) | 9000 RPM |
| Maximum Permissible Speed (Inverter) | 8050 RPM |
| Power Supply Voltage | DC 24 V ± 10 % |
| Holding Brake Opening Time | 30 ms |
| Holding Brake Closing Time | 70 ms |
| Vibration Severity Grade | Grade A |
| Radial Runout Tolerance | 0.040 mm |
| Concentricity Tolerance | 0.08 mm |
| Axial Runout Tolerance | 0.08 mm |
| Temperature Sensor | Pt1000 temperature sensor |
| Application | High dynamic applications requiring precise control and high efficiency |
The Siemens 1FK7044-4CF71-1CH2 is a high-performance permanent-magnet synchronous motor designed for demanding industrial applications. This motor is part of the SIMOTICS S-1FK7 series, known for its reliability and efficiency. With a rated speed of 3000 RPM and a rated torque of 3.7 Nm, it is well-suited for tasks requiring precise control and high dynamic response.
The motor features a compact design with a shaft height of 48 mm and natural cooling, making it ideal for installations where space is limited. It is equipped with an IP65 degree of protection, ensuring it is dust-tight and protected against water jets, with an additional DE flange rated at IP67 for enhanced durability.
The Siemens 1FK7044-4CF71-1CH2 includes an advanced encoder system, the AM24DQI, which provides 24-bit absolute position feedback and 12-bit multi-turn capability, allowing for high-resolution and accurate positioning. This motor also comes with a holding brake, offering a holding torque of 4.0 Nm, which is essential for maintaining position in power-off scenarios.
Engineered for high dynamic performance, the motor has a low moment of inertia of 1.620 kgcm², enabling rapid acceleration and deceleration. The electrical connectors for signals and power are rotatable, providing flexibility in installation and maintenance.
With a net weight of 8.0 kg, the Siemens 1FK7044-4CF71-1CH2 is robust yet manageable, making it a versatile choice for various industrial automation applications. Its anthracite RAL 7016 housing colour adds a professional finish, suitable for modern industrial environments.
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Frequently Asked Questions
What type of motor is this?
This is a permanent-magnet synchronous motor.
What is the rated speed of this motor?
The rated speed of this motor is 3000 RPM.
Does this motor come with a holding brake?
Yes, this motor is equipped with a permanent-magnet holding brake.
What is the maximum permissible speed of this motor?
The maximum permissible speed of this motor is 9000 RPM.
What is the rated torque of this motor?
The rated torque of this motor is 3.7 Nm at 100 K.
What is the efficiency of this motor?
The efficiency of this motor is 91.0%.
What type of cooling does this motor use?
This motor uses natural cooling.
What is the degree of protection for this motor?
The motor has a degree of protection of IP65 and DE flange IP67.
What is the net weight of this motor?
The net weight of this motor is 8.0 kg.
What type of encoder system does this motor use?
This motor uses an AM24DQI absolute encoder system with 24-bit resolution and 12-bit multiturn.
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