Product Overview

The Siemens 1FK7063-2AC71-1RH0 SIMOTICS S Synchronous Motor is a permanent-magnet synchronous servo motor intended for precision motion control in industrial automation systems. Part of the SIMOTICS S-1FK7 motor family, it is used in applications where controlled acceleration, accurate positioning, and repeatable torque delivery are required. Its configuration combines natural cooling, a holding brake, and an absolute encoder with a DRIVE-CLiQ interface.

Servo motors in automated machinery must respond predictably to commands from a compatible drive system. The motor converts electrical energy into mechanical rotation, while the drive regulates current and torque according to the motion controller’s commands. Feedback from the integrated encoder allows the drive and control system to determine the motor’s position and movement, supporting coordinated motion sequences and closed-loop positioning.

The 1FK7063-2AC71-1RH0 belongs to the 1FK7 compact synchronous motor range. The 1FK7 family is used in machine axes that require controlled movement rather than simple continuous rotation. Typical tasks include positioning slides, moving mechanical assemblies, driving feed mechanisms, and coordinating motion within automated production equipment.

This motor’s absolute multiturn encoder provides position information through its DRIVE-CLiQ connection. Compared with an arrangement that relies solely on incremental feedback, an absolute encoder can provide encoded position information across multiple revolutions. The actual position-reference and startup behavior still depend on the encoder configuration, drive parameters, and machine commissioning procedure.

The integrated holding brake is another important feature of this configuration. A holding brake can help maintain the motor shaft in position when the drive is not actively producing torque, provided that the application and brake are correctly configured. It is not a substitute for a complete machine safety system, and its suitability for a particular load depends on the mechanical design, brake ratings, and required holding conditions.

Natural cooling removes the need for a separate forced-air cooling arrangement at the motor. Heat is dissipated through the motor’s construction and surrounding environment, so installation conditions remain important. The machine designer must account for ambient temperature, mounting arrangement, duty cycle, and the thermal limits specified for the motor and drive combination.

The motor is suitable for integration with compatible Siemens SINAMICS drive systems. Selecting the drive requires consideration of the motor’s rated current, torque requirements, speed range, encoder interface, and operating duty. Matching these elements helps ensure that the drive can provide the required motion performance without exceeding electrical or thermal limits.

In automated production equipment, the motor can support controlled feed motion, indexing, positioning, and synchronized mechanical movement. Its suitability for any individual machine depends on the required torque-speed profile, load inertia, acceleration, braking requirements, and the mechanical transmission connected to the shaft.

The Siemens 1FK7063-2AC71-1RH0 SIMOTICS S Synchronous Motor combines servo-motion capability, absolute position feedback, and an integrated holding brake in a compact motor platform. When paired with a compatible drive and correctly engineered control system, it can provide precise and repeatable movement for industrial automation applications.

Technical Specifications

Product Features

• Permanent-magnet synchronous design: Supports controlled torque production and accurate servo motion in compatible drive systems.
• Absolute multiturn feedback: Supplies position information through an encoder with single-turn and multiturn capability.
• DRIVE-CLiQ interface: Connects the encoder to compatible Siemens drive systems for feedback communication and commissioning.
• Integrated holding brake: Helps maintain the shaft’s position when the application requires holding and the brake is correctly controlled.
• Natural cooling: Dissipates motor heat without requiring a separate motor-mounted forced-air cooling unit.
• Smooth shaft configuration: Supports mechanical coupling arrangements suited to the machine’s transmission design.
• Flange mounting: Allows integration into compatible machine structures and servo-axis assemblies.
• Industrial enclosure protection: The specified IP64 protection supports protection against dust ingress and water splashing under the conditions defined by the rating.
• Servo-drive integration: Works as part of a motion-control system in which the drive regulates current, torque, speed, and position.
• Repeatable motion performance: Supports positioning and coordinated movement when correctly matched to the mechanical load and motion controller.

Working Principle

The Siemens 1FK7063-2AC71-1RH0 operates as the electromechanical element of a closed-loop servo system. The drive supplies controlled electrical current to the motor windings, creating a rotating magnetic field that interacts with the permanent magnets in the rotor. This interaction generates torque and turns the shaft.

Motion Command → Servo Drive → Motor Torque → Mechanical Movement → Encoder Feedback

The motion controller generates a position, speed, or torque command according to the machine sequence. The compatible servo drive processes the command and regulates the electrical supply to the motor. By adjusting current and the timing of the applied electrical signals, the drive controls the motor’s torque and rotational behavior.

As the rotor moves, the absolute encoder supplies position information through the DRIVE-CLiQ interface. The drive uses the feedback as part of its control process, allowing actual motion to be compared with the commanded movement. The resulting control response helps the motor follow the requested trajectory and correct deviations within the capabilities of the configured system.

The absolute multiturn encoder can represent position across multiple shaft revolutions. This is useful when a machine must distinguish between positions that differ by one or more complete turns. Whether the system can use the absolute position immediately after power restoration depends on the drive configuration, encoder setup, and machine reference requirements.

The integrated holding brake serves a different purpose from the motor’s electromagnetic torque production. When appropriately controlled, it helps hold the shaft after motion stops or when the application requires the axis to remain stationary. Brake release and engagement must follow the specified electrical and mechanical requirements. The brake should not be treated as a dynamic stopping device unless its documented ratings explicitly permit that duty.

During normal operation, the drive, motor, encoder, and controller function as a coordinated system. The controller defines the motion sequence, the drive regulates motor current, and the encoder reports rotor position. Mechanical load, coupling stiffness, inertia, and the selected control parameters influence the final positioning response.

Natural cooling relies on heat transfer from the motor into its surroundings. Operating conditions therefore affect the permissible continuous load. Excessive ambient temperature, restricted heat dissipation, or repeated high-torque cycles may require a revised duty calculation or a different motor configuration.

Correct operation depends on the compatibility of the motor and drive, the encoder connection, the holding-brake circuit, and the motion-control parameters. Once these elements are configured and tested, the motor can execute controlled rotary movement as part of an industrial servo axis.

Role in the Industrial Control Architecture

The 1FK7063-2AC71-1RH0 forms the actuator portion of a servo-motion axis. It receives electrical power from a compatible servo drive, while the drive interprets motion commands and uses encoder feedback to regulate the motor’s response.

Motion Controller → SINAMICS Servo Drive → 1FK7063-2AC71-1RH0 Motor → Mechanical Load

The motor’s motion performance depends on the drive, feedback system, control program, and mechanical transmission working together. Correct component selection and commissioning are necessary to achieve the intended positioning behavior.

Industrial Applications

Installation and Maintenance

1. Confirm drive compatibility: Check the motor’s electrical ratings, encoder interface, brake requirements, and intended duty against the selected servo drive.
2. Inspect the motor before installation: Check the connector, shaft, mounting surfaces, and visible enclosure for damage that could affect operation.
3. Prepare the mounting structure: Ensure that the machine flange and supporting structure are suitable for the required mounting arrangement and operating loads.
4. Align the mechanical coupling: Avoid excessive radial or axial loading on the shaft, and follow the coupling manufacturer’s alignment requirements.
5. Connect the power cable: Use the specified motor power connection and follow the applicable wiring, shielding, and grounding instructions.
6. Connect the encoder interface: Establish the DRIVE-CLiQ connection using compatible components and the prescribed cable-routing practices.
7. Wire the holding brake correctly: Follow the brake’s electrical requirements and the drive system’s release and control procedure.
8. Configure the drive parameters: Select the correct motor data and configure the feedback, control mode, speed limits, and application-specific settings.
9. Verify mechanical movement: Before production operation, check the direction of rotation, coupling behavior, and travel limits at a controlled commissioning speed.
10. Test the brake function: Confirm that the brake releases and holds as intended under the approved commissioning procedure and load conditions.
11. Monitor operating temperature and vibration: Investigate abnormal heating, noise, or vibration, as these may indicate overload, alignment problems, or mechanical wear.
12. Maintain configuration records: Keep the motor identification, drive parameters, encoder settings, and maintenance history available for future troubleshooting.

If the motor fails to reach its commanded position, check the encoder connection, drive alarms, tuning parameters, mechanical coupling, and load conditions. If the brake does not release correctly, inspect its wiring and control configuration before returning the axis to service.

Related Components

Recommended Related Models

Key Advantages

• Provides controlled rotary motion for compatible servo-drive applications.
• Uses absolute multiturn encoder feedback through DRIVE-CLiQ.
• Integrates a holding brake for applications requiring shaft holding.
• Supports machine integration through a flange-mounted motor design.
• Uses natural cooling, simplifying the motor’s cooling arrangement.
• Fits into motion-control systems that require coordinated position and speed regulation.

Technical FAQs

What is the purpose of the absolute multiturn encoder on this motor?

The encoder supplies absolute position information across multiple shaft revolutions through DRIVE-CLiQ. This allows a compatible drive to determine rotor position for motion control, subject to the configured encoder and reference-management requirements of the application.

How should the integrated holding brake be used?

The brake is intended to hold the shaft under the conditions specified for the motor configuration. Its release, engagement, and electrical control must follow the applicable instructions. It should not be used for routine dynamic stopping unless the documented brake ratings explicitly allow that duty.

Which factors determine whether a SINAMICS drive is suitable for this motor?

Drive selection depends on rated current, required torque and speed, the application’s acceleration profile, encoder compatibility, brake control, and the expected duty cycle. The complete motor-drive combination must meet the machine’s electrical and dynamic requirements.

What should be investigated if the motor position becomes inconsistent during operation?

Check the DRIVE-CLiQ connection, encoder diagnostics, drive parameters, mechanical coupling, and load conditions. Incorrect feedback configuration or mechanical movement between the motor and load can affect positioning accuracy even when the motor itself remains operational.