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- Siemens
- 1FK7063-2AF71-1RH0
- Synchronous Motor
- Germany
- 63 mm
- 11.4 kg
- Xiamen, China
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Product Overview
The Siemens 1FK7063-2AF71-1RH0 is a SIMOTICS S-1FK7 permanent-magnet synchronous servo motor used in industrial motion-control systems that require controlled acceleration, accurate positioning, and repeatable movement. With a rated power of 2.3 kW, a rated speed of 3,000 rpm, and a rated torque of 7.3 Nm, it is suited to servo axes that must respond to changing production demands rather than operate continuously at a fixed speed.
In an automated assembly machine, the motor can drive a positioning table that moves workpieces between loading, processing, and inspection stations. A compatible SINAMICS drive regulates the motor’s torque and speed, while the encoder returns position information for closed-loop control. This arrangement is also relevant to packaging equipment, indexing mechanisms, and material-handling systems where the timing of one axis affects the operation of the entire machine.
The RH0 configuration includes an integrated holding brake and an AM20DQI absolute encoder with 20-bit single-turn and 12-bit multiturn resolution. The brake helps secure the connected mechanism when the motor is not required to produce active torque, while the encoder supplies position feedback to the drive. These functions are particularly relevant when specifying a replacement motor for an existing machine, because changing the brake or feedback configuration can affect wiring, commissioning, and control behavior.
The motor uses natural cooling, a smooth shaft, and rotatable power and signal connectors. Its integration should be assessed alongside the selected drive, coupling, encoder connection, brake-control circuit, and mechanical load. Matching these elements to the actual duty cycle is essential for achieving the required motion performance.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Model | 1FK7063-2AF71-1RH0 |
| Product Family | SIMOTICS S-1FK7 |
| Product Type | Compact Synchronous Servo Motor |
| Motor Technology | Permanent-Magnet Synchronous Motor |
| Rated Power | 2.3 kW |
| Rated Speed | 3,000 rpm |
| Rated Torque at 100 K | 7.3 Nm |
| Rated Current | 5.6 A |
| Static Torque at 60 K | 9.1 Nm |
| Static Torque at 100 K | 11 Nm |
| Stall Current at 60 K | 6.5 A |
| Stall Current at 100 K | 8.0 A |
| Number of Poles | 8 |
| Maximum Mechanical Speed | 7,200 rpm |
| Maximum Torque | 35 Nm |
| Maximum Current | 28 A |
| Torque Constant | 1.37 Nm/A |
| Voltage Constant at 20°C | 90.5 V/1,000 rpm |
| Winding Resistance at 20°C | 0.64 Ω |
| Rotating Field Inductance | 8.5 mH |
| Electrical Time Constant | 13.4 ms |
| Mechanical Time Constant | 1.48 ms |
| Thermal Time Constant | 40 min |
| Moment of Inertia with Brake | 15.7 kg·cm² |
| Efficiency | 91.0% |
| Cooling | Natural cooling |
| Degree of Protection | IP64 |
| Mounting Design | IM B5 (IM V1, IM V3) |
| Shaft Configuration | Smooth shaft, tolerance N |
| Holding Brake | Integrated holding brake |
| Encoder System | AM20DQI absolute encoder, 20-bit single-turn + 12-bit multiturn |
| Encoder Interface | DRIVE-CLiQ |
| Temperature Monitoring | Pt1000 temperature sensor |
| Electrical Connections | Rotatable power and signal connectors |
| Shaft Height | 63 mm |
| Weight | 11.4 kg |
Product Features
- 2.3 kW rated output: Supports servo-driven machinery requiring controlled rotary motion.
- 3,000 rpm rated speed: Suits positioning axes and cyclic production movements.
- Permanent-magnet synchronous design: Works with a compatible servo drive for regulated torque, speed, and position.
- AM20DQI absolute encoder: Supplies single-turn and multiturn position feedback through DRIVE-CLiQ.
- Integrated holding brake: Helps retain the connected mechanism when the brake is engaged under its specified load conditions.
- Smooth shaft configuration: Accommodates suitable couplings selected for the driven mechanism.
- Natural cooling: Uses the specified cooling arrangement without a separate forced-air motor cooling unit.
- IP64 protection: Protects against dust ingress and water splashes under the defined test conditions.
- Pt1000 temperature monitoring: Supports motor temperature supervision through compatible drive equipment.
- Rotatable connectors: Allow the power and signal connection orientation to be adapted to the machine layout.
Working Principle
The 1FK7063-2AF71-1RH0 generates rotary motion through the interaction between its permanent-magnet rotor and the rotating magnetic field produced by the stator windings. A compatible SINAMICS servo drive controls the three-phase motor currents according to the motion commands received from the automation controller.
The operating sequence follows this general arrangement:
PLC / Motion Controller → SINAMICS Drive → 1FK7063-2AF71-1RH0 → Mechanical Load
Encoder Feedback: AM20DQI → DRIVE-CLiQ → Servo Drive
When the controller requests a movement, the drive adjusts motor current to produce the torque needed for acceleration, travel, and deceleration. The AM20DQI encoder supplies absolute position information, allowing the drive and controller to monitor the axis and correct deviations from the commanded motion.
For example, a packaging machine may require a rotary mechanism to advance a defined distance before a cutting or sealing operation begins. The controller commands the movement, the drive regulates the motor, and encoder feedback helps establish when the axis has reached the required position. Actual positioning performance depends on the complete system, including drive tuning, mechanical stiffness, coupling characteristics, and load inertia.
The integrated holding brake has a separate function from the motor’s electromagnetic torque production. It is used to secure the axis when the brake is engaged, according to the specified control sequence. During normal movement, the brake must be released as required by the drive configuration. It should not be treated as a substitute for servo control or as a general-purpose dynamic stopping device.
The motor’s smooth shaft also affects mechanical integration. The coupling must be selected to suit the shaft interface and application loads. Excessive misalignment or radial force can increase bearing stress and cause vibration or positioning problems, even when the electrical control system is functioning correctly.
Role in a SINAMICS Servo Control Architecture
The 1FK7063-2AF71-1RH0 forms the motor stage of a closed-loop servo axis. The controller coordinates the movement, the drive supplies regulated electrical power, and the encoder returns position information. The integrated brake adds a mechanical holding function that must be coordinated with the drive.
Motion Controller → SINAMICS Drive → Servo Motor → Mechanical Transmission
Encoder Feedback → DRIVE-CLiQ → Servo Drive
| System Element | Function |
|---|---|
| PLC or Motion Controller | Generates motion commands and coordinates machine operations |
| SINAMICS S120 Drive System | Provides controlled power and closed-loop servo regulation in a compatible configuration |
| Motor Module | Supplies the electrical power required by the motor |
| 1FK7063-2AF71-1RH0 | Converts electrical energy into controlled rotary motion |
| AM20DQI Encoder | Supplies absolute single-turn and multiturn position feedback |
| DRIVE-CLiQ Connection | Transfers encoder data to compatible drive equipment |
| Holding Brake Circuit | Controls brake release and engagement according to the application sequence |
| Motor Power Cable | Connects the drive power stage to the motor |
| Mechanical Coupling | Transfers torque to the driven shaft or transmission |
| PLC Interlocks and Sensors | Coordinate axis movement with machine conditions |
When integrating the motor, verify the drive’s supported motor data, encoder configuration, brake-control capability, and electrical ratings. The controller’s axis configuration must also match the actual motor and feedback arrangement.
Industrial Applications
| Application | Typical Use |
|---|---|
| Automated Assembly | Positioning workpieces during fastening, insertion, and inspection |
| Packaging Machinery | Driving indexing mechanisms and synchronized production axes |
| Pick-and-Place Systems | Moving tools or components between programmed positions |
| Material Handling | Controlling servo-driven transfer and positioning equipment |
| Labeling Equipment | Coordinating rotary movement with product transport |
| Inspection Machines | Positioning fixtures and inspection mechanisms |
| Printing Machinery | Driving selected feed and registration axes |
| Electronics Manufacturing | Operating automated handling and assembly mechanisms |
| Machine Tools | Controlling compatible auxiliary or positioning axes |
| General Factory Automation | Providing closed-loop motion in programmable machinery |
This motor is suited to applications that need coordinated servo motion and a defined holding-brake function. Before selection, assess continuous torque, peak torque, acceleration, deceleration, operating frequency, and the inertia of the driven mechanism. Applications involving vertical or gravity-loaded axes also require careful evaluation of the brake-control sequence and load-holding requirements.
Installation and Maintenance
- Verify the complete order number: Confirm that the required motor is 1FK7063-2AF71-1RH0, including its encoder and integrated holding-brake configuration.
- Check drive compatibility: Verify that the selected SINAMICS drive supports the motor’s electrical ratings and AM20DQI DRIVE-CLiQ feedback system.
- Inspect the mounting interface: Check the flange, mounting surface, fasteners, and alignment before securing the motor.
- Review the shaft coupling: Select a coupling compatible with the smooth shaft and verify alignment with the driven mechanism.
- Connect the motor power circuit: Follow the applicable wiring diagram and verify the phase connections and protective-earth continuity.
- Inspect encoder connections: Check the DRIVE-CLiQ cable, connectors, cable routing, and drive-side feedback assignment.
- Verify brake operation: Check the brake-control circuit and confirm that the brake releases before commanded movement begins.
- Assess the mechanical load: Review inertia, friction, coupling alignment, and expected peak torque to avoid excessive motor loading.
- Configure the drive: Verify motor identification, encoder parameters, current limits, brake settings, and the required control mode.
- Commission at reduced demand: Test direction, feedback, acceleration, and stopping behavior using conservative initial settings before increasing operating demands.
- Monitor operating conditions: Investigate abnormal heating, vibration, noise, position deviation, or repeated drive faults rather than changing parameters without diagnosis.
- Record maintenance findings: Document the drive configuration, encoder assignment, brake operation, coupling arrangement, and commissioning results for future service.
Before working on the motor, isolate the drive and follow the site’s electrical safety procedures. If the shaft can be moved by external forces, secure the mechanism before releasing or servicing the brake. A rotating permanent-magnet motor can also generate voltage when driven mechanically, so the relevant electrical hazards must be addressed.
Compatible System Components
The 1FK7063-2AF71-1RH0 must be integrated with a compatible drive, encoder connection, brake-control arrangement, and mechanical transmission. The following components cover the main functions involved in a typical servo installation.
| Component | Function |
|---|---|
| SINAMICS S120 Drive System | Provides closed-loop servo control in a compatible configuration |
| SINAMICS S120 Control Unit | Coordinates drive operation and motion-control functions |
| SINAMICS Motor Module | Supplies controlled electrical power to the motor |
| DRIVE-CLiQ Signal Cable | Connects the encoder interface to compatible drive equipment |
| Motor Power Cable | Carries the drive output to the motor |
| Holding Brake Control Circuit | Coordinates brake engagement and release |
| PLC or Motion Controller | Generates position, speed, and sequencing commands |
| Mechanical Coupling | Transfers motor torque to the driven mechanism |
| Gearbox, Where Required | Adapts speed and torque to the machine’s requirements |
| Machine Sensors and Interlocks | Coordinate axis movement with operating conditions |
Recommended Related Models
| Model | Product Type | Typical Application |
|---|---|---|
| Siemens 1FK7063-2AF71-1RH1 | SIMOTICS S-1FK7 Synchronous Motor | Related motor configuration with holding brake and a different protection specification |
| Siemens 1FK7063-2AF71-1RH2 | SIMOTICS S-1FK7 Synchronous Motor | Related holding-brake motor variant |
| Siemens 1FK7063-2AF71-1RG0 | SIMOTICS S-1FK7 Synchronous Motor | Related motor configuration without the RH-series brake option |
| Siemens 1FK7063-2AF71-1RA0 | SIMOTICS S-1FK7 Synchronous Motor | Related motor variant with a different shaft and feedback configuration |
| Siemens 1FK7063-2AF71-1CH1 | SIMOTICS S-1FK7 Synchronous Motor | Related variant with a different absolute encoder configuration |
| Siemens 1FK7060-2AF71-1RH0 | SIMOTICS S-1FK7 Synchronous Motor | Related motor family option for applications requiring a different torque rating |
Key Advantages
- 2.3 kW rated output and 3,000 rpm rated speed.
- 7.3 Nm rated torque at the specified thermal condition.
- AM20DQI absolute encoder with single-turn and multiturn feedback.
- Integrated holding brake for suitable axis-holding applications.
- DRIVE-CLiQ integration with compatible SINAMICS drive systems.
- Natural cooling and IP64 protection.
- Smooth shaft for compatible coupling arrangements.
Technical FAQs
What is the difference between the 1FK7063-2AF71-1RH0 and 1FK7063-2AF71-1RG0?
The RH0 version includes an integrated holding brake, while the RG0 configuration is specified without one. This affects brake wiring, drive configuration, and the mechanical strategy used to prevent unintended movement. Check the complete suffix before ordering a replacement.
Which encoder is fitted to the 1FK7063-2AF71-1RH0?
This motor uses the AM20DQI absolute encoder with 20-bit single-turn and 12-bit multiturn resolution through DRIVE-CLiQ. The drive and feedback connection must support this encoder configuration, and the correct motor data must be assigned during commissioning.
When should the integrated holding brake engage?
The brake should operate according to the drive’s configured sequence and the machine’s load-holding requirements. It is generally released before the motor begins moving and engaged when the axis needs to be secured. Applications with suspended loads require an appropriate assessment of brake capacity, control behavior, and safety requirements.
What can cause a servo following error even when the motor runs smoothly?
Possible causes include incorrect encoder configuration, drive tuning issues, excessive load inertia, coupling misalignment, mechanical backlash, or a commanded acceleration profile that exceeds the system’s capabilities. Check feedback status and mechanical transmission conditions before adjusting control parameters.