ProductPRODUCT
Featured products
Contact Us
- Siemens
- 1FK7042-5AF71-1SG0
- Synchronous Servo Motor
- Germany
- 48 mm
- 4.903 kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
- DHL, UPS, TNT, FedEx and EMS.
- 24-Hour Service
- COO
- 4
Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
| Company Information | |||
| [email protected] | |||
| Mobile | +8615980777398 | ||
| +8615980777398 | |||
| 15980777398 |
Product Overview
The Siemens 1FK7042-5AF71-1SG0 is a SIMOTICS S-1FK7 compact synchronous servo motor intended for precision motion control in industrial machinery. It uses permanent-magnet synchronous motor technology and a multi-pole resolver for rotor position feedback. The resolver configuration makes it suitable for drive systems that use compatible resolver-based feedback interfaces rather than a DRIVE-CLiQ encoder connection.
With a rated speed of 3,000 rpm, a rated torque of 2.6 Nm at a 100 K temperature rise, and naturally cooled operation, this motor can be used in positioning axes, machine-feed mechanisms and other applications requiring controlled acceleration and repeatable movement. Its smooth shaft configuration and absence of an integrated holding brake should be considered when matching it to a gearbox, coupling or machine axis.
The motor is intended for operation with a compatible servo drive, such as a suitably configured SINAMICS system. Drive selection must account for the motor’s feedback type, rated current, torque requirements and speed limits. The resolver interface and power connection also need to match the selected drive and cable arrangement.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Order Number | 1FK7042-5AF71-1SG0 |
| Product Family | SIMOTICS S-1FK7 |
| Product Type | Synchronous Servo Motor |
| Motor Design | Compact permanent-magnet synchronous motor |
| Rated Power | Approximately 0.82 kW |
| Rated Speed | 3,000 rpm |
| Rated Torque at 100 K Temperature Rise | 2.6 Nm |
| Static Torque at 100 K Temperature Rise | 3.0 Nm |
| Maximum Mechanical Speed | 9,000 rpm |
| Maximum Inverter Speed | 6,500 rpm |
| Maximum Torque | 10.5 Nm |
| Rated Current | 1.9 A |
| Cooling Method | Natural cooling |
| Mounting Arrangement | IM B5 (IM V1, IM V3) |
| Feedback System | Multi-pole resolver, 4 pole pairs |
| Encoder Interface | Resolver feedback; no DRIVE-CLiQ interface |
| Shaft Type | Plain shaft |
| Holding Brake | Without holding brake |
| Degree of Protection | IP64 |
| Temperature Monitoring | KTY84 temperature sensor in stator winding |
| Power and Signal Connections | Rotatable connectors |
| Shaft Height | 48 mm |
| Weight | 4.903 kg |
Product Features
- Permanent-magnet synchronous technology: Supports controlled torque and speed in servo-driven machinery.
- Compact motor construction: Fits applications where the machine layout calls for a compact servo motor.
- Resolver feedback: Supplies rotor-position feedback through a multi-pole resolver for compatible drive systems.
- Naturally cooled operation: Uses natural cooling rather than an integrated forced-ventilation system.
- Smooth shaft configuration: Supports suitable coupling arrangements where a plain shaft is required.
- No integrated holding brake: Allows the machine designer to account separately for any external braking or load-holding requirement.
- Rotatable connectors: Helps accommodate cable-routing requirements during machine integration.
- Integrated temperature monitoring: Uses a KTY84 sensor in the stator winding for motor-temperature monitoring.
- IP64 protection: Provides protection against dust ingress and water splashing under the specified test conditions.
- Servo-drive compatibility: Can be integrated with a drive configured for the motor’s electrical characteristics and resolver feedback.
Working Principle
The 1FK7042-5AF71-1SG0 operates as a permanent-magnet synchronous motor. The servo drive supplies controlled three-phase current to the stator windings, producing a rotating magnetic field that interacts with the rotor’s permanent magnets. By adjusting the current and electrical frequency, the drive controls the motor’s torque, direction and speed.
The multi-pole resolver supplies rotor-position feedback to a compatible drive. The drive uses this feedback for commutation and motion regulation, allowing the motor to follow commanded speed or position profiles. The resolver interface must be compatible with the selected drive; an encoder interface intended for DRIVE-CLiQ cannot be assumed to work directly with this resolver version.
During operation, the KTY84 temperature sensor provides winding-temperature information for supported monitoring functions. The control system can use this information as part of its motor-protection strategy. Correct motor data, feedback configuration, current limits and acceleration settings are important for avoiding excessive current or temperature during demanding motion cycles.
Role in a SINAMICS Servo Control Architecture
The 1FK7042-5AF71-1SG0 serves as the electromechanical actuator in a servo axis. A compatible servo drive converts motion commands from the controller into controlled motor current, while resolver feedback closes the position and speed control loops.
| System Component | Function | Relationship to the Motor |
|---|---|---|
| SINAMICS Servo Drive | Regulates motor current, speed and torque | Supplies power and processes resolver feedback |
| Motion Controller or PLC | Executes positioning and machine sequences | Sends motion commands to the drive |
| 1FK7042-5AF71-1SG0 | Converts electrical energy into controlled rotary motion | Drives the connected machine mechanism |
| Resolver Feedback Cable | Carries rotor-position signals | Connects the motor feedback system to a compatible drive |
| Motor Power Cable | Supplies three-phase motor power | Connects the drive output to the motor |
| Mechanical Coupling | Transfers motor torque to the driven mechanism | Connects the smooth shaft to the machine transmission |
| Gearbox, Where Required | Changes speed and output torque | Adapts motor motion to the machine’s mechanical requirements |
| KTY84 Temperature Monitoring Circuit | Monitors stator winding temperature | Supplies temperature information to compatible monitoring equipment |
| Machine HMI | Displays operating states and alarms | Presents drive and controller information to operators |
| Protective Devices | Provide electrical isolation and system protection | Support safe operation of the complete servo axis |
Industrial Applications
| Application | Motion Requirement | Role of the Motor |
|---|---|---|
| Machine Tool Feed Axes | Controlled movement during machining cycles | Drives a compatible feed mechanism under servo control |
| Packaging Machinery | Repeatable positioning during product handling | Provides rotary motion for synchronized machine operations |
| Assembly Automation | Controlled movement between programmed positions | Drives positioning mechanisms in automated assembly equipment |
| Pick-and-Place Systems | Coordinated acceleration and deceleration | Supplies motion to a suitable mechanical axis |
| Material Handling Equipment | Controlled movement of machine components | Drives mechanisms requiring regulated speed or position |
| Automated Inspection Equipment | Repeatable positioning for inspection sequences | Moves fixtures or inspection mechanisms under controller supervision |
| Compact Production Machinery | Servo motion within restricted machine layouts | Supports compact axis integration with compatible mechanical components |
| Industrial Indexing Systems | Repeated angular or linear positioning through a transmission | Supplies controlled rotary motion to an indexing mechanism |
Installation and Maintenance
- Verify the complete motor order number: Confirm that 1FK7042-5AF71-1SG0 matches the required resolver feedback, shaft arrangement and brake configuration.
- Check drive compatibility: Confirm that the selected servo drive supports the motor’s electrical ratings and multi-pole resolver feedback.
- Isolate electrical power: Apply the required lockout and safety procedures before connecting, disconnecting or servicing the motor.
- Inspect the mounting interface: Check the flange, fasteners and mounting surface for damage, contamination or alignment problems.
- Confirm the shaft coupling: Select a coupling compatible with the plain shaft and the driven machine’s torque and alignment requirements.
- Check power connections: Verify motor phase connections and connector assignments against the applicable wiring information.
- Connect the resolver correctly: Use a compatible feedback cable and confirm that the resolver signals reach the correct drive terminals.
- Configure motor data: Enter the correct motor identification and rated electrical parameters in the drive configuration.
- Set motion limits: Configure speed, current, torque and acceleration limits according to the application and the connected mechanism.
- Check thermal monitoring: Confirm that the temperature-monitoring circuit is connected and handled correctly by the selected drive or monitoring system.
- Perform a controlled commissioning test: Verify rotation direction, feedback operation, current behavior and motion response at a safe operating condition before full production.
- Inspect operating trends: Monitor abnormal noise, vibration, temperature and drive alarms; investigate changes before returning the axis to demanding service.
Related Components
| Component | Function | Relationship to the Motor |
|---|---|---|
| Siemens SINAMICS S120 Drive System | Provides servo power and motion regulation | Must support the motor’s ratings and resolver feedback |
| Siemens SIMOTION Motion Controller | Executes coordinated motion tasks | Can command a compatible servo axis |
| Siemens SIMATIC S7-1500T CPU | Provides technology and motion-control functions | Can coordinate compatible drive applications |
| Motor Power Cable | Transfers drive output power | Connects the drive to the motor |
| Resolver Feedback Cable | Carries rotor-position signals | Supports closed-loop servo operation |
| Mechanical Shaft Coupling | Transfers torque to the machine | Connects the plain shaft to the driven mechanism |
| Precision Gearbox | Adapts speed and torque | Used when the application requires a transmission ratio |
| Machine HMI | Displays motion status and alarms | Supports operator supervision through the controller |
| Electrical Protection Devices | Protect the drive and motor circuit | Form part of the overall machine electrical design |
Recommended Related Models
| Model | Product Type | Relationship | Selection Consideration |
|---|---|---|---|
| Siemens 1FK7042-5AF71-1SG0 | SIMOTICS S-1FK7 Synchronous Servo Motor | Main product | Multi-pole resolver feedback, plain shaft and no holding brake |
| Siemens 1FK7042-5AF71-1SA0 | SIMOTICS S-1FK7 Synchronous Servo Motor | Related resolver-feedback variant | Check the specific shaft and connection configuration before substitution |
| Siemens 1FK7042-5AF71-1FA0 | SIMOTICS S-1FK7 Synchronous Servo Motor | Related absolute-encoder variant | Uses an absolute encoder with DRIVE-CLiQ rather than the resolver interface |
| Siemens 1FK7042-5AF71-1FG0 | SIMOTICS S-1FK7 Synchronous Servo Motor | Related absolute-encoder variant | Check the encoder interface and plain-shaft configuration |
| Siemens 1FK7042-5AF71-1EG3 | SIMOTICS S-1FK7 Synchronous Servo Motor | Related EnDat absolute-encoder variant | Verify feedback compatibility and the required shaft configuration |
| Siemens 1FK7042-2AF71-1QG0 | SIMOTICS S-1FK7 Synchronous Motor | Related motor family option | Compare the complete order number and feedback configuration before selecting |
Key Advantages
- Supports closed-loop servo motion through multi-pole resolver feedback.
- Combines compact construction with naturally cooled operation.
- Offers controlled rotary motion for positioning and feed mechanisms.
- Includes winding-temperature monitoring through a KTY84 sensor.
- Supports integration into compatible Siemens servo-drive and motion-control systems.
Technical FAQs
What feedback interface does the 1FK7042-5AF71-1SG0 use?
This motor uses a multi-pole resolver with four pole pairs. The selected servo drive must support the corresponding resolver interface and feedback configuration.
Can this motor be used with a drive that requires DRIVE-CLiQ feedback?
Not directly on the basis of its resolver configuration. A drive expecting a DRIVE-CLiQ encoder requires a compatible feedback arrangement. Confirm the exact motor and drive interface combination before selecting a replacement.
What should be considered when using the motor without an integrated holding brake?
The machine’s load-holding and stopping requirements must be assessed separately. If a vertical axis or another mechanism must remain stationary when power is removed, the system may require an appropriately engineered external brake or other load-retention measure.
How does the motor’s temperature sensor support operation?
The KTY84 sensor monitors the stator winding temperature. When connected to compatible monitoring equipment, it can provide temperature information for supervision and protective functions. The sensor wiring and monitoring configuration must match the selected drive system.