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- Siemens
- 1FK7042-2AF71-1CG0
- Synchronous Motor
- Germany
- 48 mm
- 4.601 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Siemens 1FK7042-2AF71-1CG0 is a SIMOTICS S synchronous motor from the 1FK7 motor family, intended for servo-controlled industrial motion systems. It serves as the rotating drive element of a machine axis, working with a compatible Siemens drive and motion-control system to convert controlled electrical energy into mechanical movement.
This type of motor is used where a machine requires controlled rotary motion rather than simple continuous-speed operation. Typical applications include automated production equipment, packaging machinery, material-handling systems, machine tools, assembly equipment, and other machinery in which motor movement must follow defined speed, position, or sequencing commands.
The motor should be evaluated as part of the complete drive axis during installation or replacement. Drive compatibility, feedback configuration, mechanical coupling, machine load, and controller settings all contribute to the final operating behavior of the servo system.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | 1FK7042-2AF71-1CG0 |
| Product Type | Synchronous Motor |
| Product Family | SIMOTICS S |
| Series | 1FK7 |
| Motor Technology | Permanent-Magnet Synchronous Motor |
| Motion Type | Servo Motion |
| Control Method | Closed-Loop Motion Control |
| Application | Industrial Machine-Axis Motion |
| System Integration | Siemens Servo Drive and Motion Controller |
| Feedback | Motor Feedback System |
| Mechanical Function | Rotary Machine-Axis Drive |
| Installation | Machine-Mounted |
| Shaft Height | 48 mm |
| Weight | 4.601 kg |
Product Features
- SIMOTICS S synchronous motor for industrial motion applications
- Belongs to the Siemens 1FK7 motor family
- Suitable for servo-controlled rotary machine axes
- Works with a compatible Siemens drive and motion-control architecture
- Supports controlled movement for automated machinery
- Suitable for positioning, speed regulation, and coordinated axis operation
- Can be integrated with mechanical couplings and other machine transmission components
- Applicable to single-axis and multi-axis automation systems
- Suitable for repetitive production and machine-cycle applications
- Can be used in maintenance or replacement projects where the complete servo-axis configuration is compatible
Working Principle
The 1FK7042-2AF71-1CG0 operates as the motor element within a controlled motion axis. The motion controller establishes the required movement according to the machine sequence, while the associated drive converts the command into controlled electrical power for the motor.
The synchronous motor converts the electrical input into rotary mechanical movement. This rotation is transferred through the machine’s mechanical transmission, such as a coupling, gearbox, belt, or other suitable mechanism, to the driven axis.
During operation, the servo system uses motor feedback to monitor actual motor behavior. The drive compares the commanded movement with available feedback information and continuously adjusts motor operation as necessary. This closed-loop process allows the motor to participate in controlled positioning, speed regulation, and coordinated machine movement.
A simplified operating sequence is:
Motion Controller → Siemens Servo Drive → 1FK7042-2AF71-1CG0 → Mechanical Transmission → Machine Axis
The feedback path returns motor-status information to the drive and control system, allowing the complete axis to respond to changes in commanded and actual movement.
Role in a SIMOTICS S Servo Motion Control Architecture
The 1FK7042-2AF71-1CG0 occupies the motor stage of a Siemens SIMOTICS S motion-control system. The controller determines the required machine movement, the drive manages motor operation, and the motor converts the controlled electrical input into mechanical rotation.
| Control Architecture Layer | Typical Component | Function |
|---|---|---|
| Motion Control | Siemens Motion Controller | Generates and coordinates machine-axis commands |
| Drive Layer | Siemens Servo Drive | Regulates motor power and closed-loop operation |
| Motor Layer | 1FK7042-2AF71-1CG0 | Produces controlled rotary mechanical movement |
| Feedback Layer | Motor Feedback System | Provides actual motor-status information |
| Mechanical Layer | Coupling / Gear / Belt | Transfers motor movement to the machine |
| Machine Axis | Automated Mechanism | Performs the required production movement |
| Supervisory Layer | HMI / Engineering System | Provides operator control, diagnostics, and configuration |
Industrial Applications
| Application | Typical Use |
|---|---|
| Packaging Machinery | Controlled rotary movement for indexing and machine sequences |
| Automated Assembly | Servo-driven movement of assembly mechanisms |
| Material Handling | Positioning and coordinated movement of handling equipment |
| Machine Tools | Controlled rotary movement in automated machine mechanisms |
| Production Machinery | Repeatable movement during manufacturing cycles |
| Robotics and Automation | Servo-controlled rotary axes in automated equipment |
| Printing Machinery | Synchronized movement of machine mechanisms |
| Converting Equipment | Controlled motion for production and material-processing operations |
Installation and Maintenance
- Verify drive compatibility — Confirm that the motor is suitable for the connected Siemens drive and intended servo-axis configuration before installation.
- Check the mechanical mounting — Verify that the motor mounting arrangement and machine interface are suitable for the application.
- Inspect the motor — Check the motor housing, shaft, connectors, and accessible surfaces for damage before mounting.
- Verify feedback compatibility — Confirm that the motor feedback arrangement and associated cable are compatible with the connected drive system.
- Inspect motor cabling — Check power and feedback cables for correct routing, secure connections, and physical damage.
- Protect feedback wiring — Route feedback wiring appropriately and maintain suitable separation from potential electrical interference sources.
- Check the driven mechanism — Verify that the connected machine axis moves freely and that there is no unexpected mechanical resistance.
- Confirm drive parameters — Check motor identification, feedback settings, direction, scaling, and other applicable axis parameters before enabling the motor.
- Inspect shaft and coupling alignment — Ensure the motor shaft is correctly aligned with the mechanical transmission and avoid unnecessary mechanical loading.
- Perform a controlled test movement — Start with a low-risk movement to verify rotation direction, feedback response, and basic servo operation.
- Monitor operating conditions — Observe the motor and drive for unusual vibration, noise, temperature increase, positioning deviations, or servo faults.
- Document the completed installation — Record the motor model, drive configuration, feedback arrangement, wiring changes, and commissioning results for future maintenance.
Related Components
| Component | Function |
|---|---|
| Siemens SINAMICS Servo Drive | Controls electrical power supplied to the motor |
| Siemens Motion Controller | Generates and coordinates machine-axis movement |
| Motor Power Cable | Connects the motor to the servo drive |
| Motor Feedback Cable | Transfers motor feedback information to the drive |
| Mechanical Coupling | Connects the motor shaft to the driven mechanism |
| Gearbox | Adapts motor rotation to the machine requirements |
| HMI / Engineering System | Supports operation, configuration, and diagnostics |
| Industrial Control Network | Connects motion-control and automation components |
Recommended Related Models
| Model | Product Type | Series |
|---|---|---|
| Siemens 1FK7022 Series | Synchronous Servo Motor | SIMOTICS S |
| Siemens 1FK7032 Series | Synchronous Servo Motor | SIMOTICS S |
| Siemens 1FK7045 Series | Synchronous Servo Motor | SIMOTICS S |
| Siemens 1FK7063 Series | Synchronous Servo Motor | SIMOTICS S |
| Siemens 1FK7083 Series | Synchronous Servo Motor | SIMOTICS S |
Key Advantages
- SIMOTICS S motor platform for industrial motion applications
- 1FK7 series synchronous motor architecture
- Suitable for controlled rotary machine-axis movement
- Supports closed-loop servo applications with compatible drive and feedback systems
- Applicable to positioning, coordinated motion, and repetitive machine cycles
- Integrates into Siemens motion-control architectures
- Suitable for industrial automation and machine-axis replacement projects
Technical FAQs
What is the Siemens 1FK7042-2AF71-1CG0 used for?
The 1FK7042-2AF71-1CG0 is a SIMOTICS S synchronous motor used as the motor element of a controlled industrial motion axis. It can be applied to automated machinery requiring controlled rotary movement.
Is the 1FK7042-2AF71-1CG0 a complete servo system?
No. The motor is one part of the complete motion axis. A compatible drive, controller, feedback arrangement, mechanical transmission, and machine load must also be considered when configuring the system.
What should be checked before replacing this 1FK7 motor?
The existing drive, feedback system, motor configuration, mechanical mounting, shaft connection, machine load, and controller parameters should all be checked. The replacement should match the requirements of the complete axis rather than being selected from the motor series alone.
How can abnormal movement after installation be investigated?
Start by checking motor power and feedback connections, drive configuration, commanded direction, mechanical coupling, and machine-axis movement. If these items are correct, review the servo feedback and control behavior for positioning deviations or drive faults.