Product Overview

The Siemens 1FK7063-5AF71-1AA0 is a SIMOTICS S-1FK7 Compact permanent-magnet synchronous servo motor used in industrial machines that require controlled rotary motion, repeatable positioning, and coordinated speed changes. With a rated power of approximately 2.29 kW, a rated speed of 3,000 rpm, and a rated torque of 7.3 Nm, it suits servo axes that operate through repeated acceleration, travel, and deceleration cycles.

In an automated production line, this motor can drive a transfer mechanism that moves components between processing stations. A compatible SINAMICS drive regulates the motor’s current and speed, while the incremental encoder supplies feedback for closed-loop control. The controller can use this feedback to monitor axis movement and coordinate it with sensors, grippers, and other machine operations.

The 1AA0 configuration uses an incremental encoder with Sin/Cos 1 Vpp signals and 2,048 pulses per revolution. Unlike an absolute encoder configuration, this arrangement relies on the drive and machine’s reference strategy to establish the required position after startup. This distinction matters when replacing an existing servo motor because the encoder interface and controller configuration must match the installed system.

The motor features a keyed shaft, natural cooling, and power and signal connectors that can be rotated through 270 degrees. It does not include an integrated holding brake. If the driven mechanism must remain stationary after the drive removes motor torque, the machine may require a separate holding mechanism, depending on the load and installation orientation.

Technical Specifications

Product Features

• Compact servo motor configuration: Supports controlled rotary motion in industrial automation equipment.
• 2.29 kW rated power: Suits machinery requiring moderate servo output for positioning and cyclic movement.
• 3,000 rpm rated speed: Accommodates applications involving repeated movements and coordinated axis operation.
• Incremental Sin/Cos encoder: Supplies motion feedback through 1 Vpp signals at 2,048 pulses per revolution.
• Keyed shaft: Provides a mechanical interface for compatible keyed couplings and transmission components.
• Natural cooling: Uses the specified motor cooling arrangement without a separate forced-air cooling unit.
• IP64 protection: Protects against dust ingress and water splashes under the defined test conditions.
• 270° rotatable connectors: Allow the power and signal connections to be positioned to suit the installation layout.
• No integrated holding brake: Leaves stationary load retention to the machine’s mechanical arrangement where required.

Working Principle

The 1FK7063-5AF71-1AA0 generates rotary motion through the interaction between its permanent-magnet rotor and the magnetic field produced by the stator windings. A compatible servo drive controls the three-phase current supplied to the motor, regulating torque and speed according to commands from the motion controller.

A typical axis operates through the following arrangement:

PLC / Motion Controller → SINAMICS Servo Drive → 1FK7063-5AF71-1AA0 → Mechanical Load

Encoder Feedback → Servo Drive → Closed-Loop Motion Control

When the controller commands a movement, the drive adjusts motor current to accelerate the load, maintain the commanded speed, or decelerate toward the target position. The incremental encoder returns Sin/Cos feedback, allowing the drive to evaluate motor movement and regulate the axis.

For example, a packaging machine may use the motor to advance a feed mechanism by a specified distance before a cutting or sealing operation. The controller coordinates the movement with the production sequence, while the drive uses encoder feedback to control the motor’s response. Actual positioning performance depends on the encoder evaluation, drive tuning, mechanical transmission, load inertia, and the programmed motion profile.

Because this version uses an incremental encoder, the startup and referencing procedure must be considered during machine design. Depending on the application and control configuration, the axis may need to perform a reference movement or use an external reference sensor before executing position-dependent operations.

The keyed shaft transfers motor torque through a compatible coupling. Correct alignment is essential: shaft misalignment, excessive radial loading, or a loose coupling can cause vibration and positioning deviations even when the electrical feedback system is functioning normally.

Role in a SINAMICS Servo Control Architecture

The 1FK7063-5AF71-1AA0 serves as the electromechanical output stage of a closed-loop servo axis. The motion controller coordinates machine operations, the servo drive regulates the motor, and the incremental encoder supplies feedback for motion control.

Motion Controller → SINAMICS Drive → Servo Motor → Mechanical Transmission

Incremental Encoder Feedback → Servo Drive → Axis Control

Drive compatibility must be verified against the motor’s electrical ratings and incremental encoder interface. The feedback configuration and reference procedure must also match the existing control architecture, particularly when replacing a motor that previously used an absolute encoder.

Industrial Applications

This motor is suited to applications where incremental feedback and a keyed shaft fit the existing machine architecture. Selection should account for the required torque profile, acceleration, operating speed, duty cycle, and load inertia rather than rated power alone.

Installation and Maintenance

1. Verify the complete order number: Confirm that the replacement is 1FK7063-5AF71-1AA0, including its incremental encoder, keyed shaft, and no-brake configuration.
2. Check drive compatibility: Verify that the selected SINAMICS drive supports the motor’s electrical characteristics and Sin/Cos 1 Vpp encoder interface.
3. Inspect the mounting flange: Check the mounting surface, fasteners, and alignment before securing the motor.
4. Check the keyed shaft connection: Inspect the key and keyway, then confirm that the coupling fits correctly without excessive clearance or interference.
5. Connect the motor power circuit: Follow the applicable wiring diagram and verify the motor connections and protective-earth continuity.
6. Inspect the encoder cable: Check the signal connector, cable routing, shielding, and connection to the drive’s feedback interface.
7. Confirm the referencing procedure: Determine whether the machine requires a homing movement, reference sensor, or another established procedure after startup.
8. Assess the mechanical load: Review load inertia, friction, coupling alignment, and expected peak torque before commissioning.
9. Configure the drive: Verify the motor data, encoder settings, current limits, and control mode against the actual installation.
10. Test at reduced operating demand: Confirm rotation direction, encoder feedback, acceleration, and stopping behavior before running the production motion profile.
11. Monitor vibration and temperature: Investigate abnormal noise, heating, position deviation, or repeated drive faults rather than changing parameters without diagnosis.
12. Document the final setup: Record the motor reference, drive configuration, encoder settings, reference procedure, and mechanical coupling details for future maintenance.

Before servicing the motor, isolate the drive and follow the site’s electrical safety procedures. A rotating permanent-magnet motor can generate voltage when driven mechanically, so the shaft must be secured and electrical hazards assessed before disconnecting the motor.

Compatible System Components

The 1FK7063-5AF71-1AA0 must be matched with a compatible servo drive, incremental feedback interface, power and signal cabling, and mechanical transmission. The selected combination should reflect the machine’s motion profile and referencing requirements.

Recommended Related Models

Key Advantages

• 2.29 kW rated power and 3,000 rpm rated speed.
• 7.3 Nm rated torque at the specified thermal condition.
• Incremental Sin/Cos encoder with 2,048 pulses per revolution.
• Keyed shaft for compatible mechanical couplings.
• Natural cooling and IP64 protection.
• Power and signal connectors rotatable through 270°.
• Suitable for servo axes that use an incremental feedback and referencing strategy.

Technical FAQs

What does the 1AA0 configuration mean for encoder selection?

The 1AA0 version uses an incremental Sin/Cos encoder with 1 Vpp signals and 2,048 pulses per revolution. The drive’s feedback interface must support this signal type. It should not be treated as a direct replacement for an absolute-encoder motor without checking the drive and controller configuration.

Does the 1FK7063-5AF71-1AA0 have a holding brake?

No. This configuration is specified without an integrated holding brake. If the application involves a vertical axis or a load that could move after motor torque is removed, assess whether a separate mechanical holding device is necessary.

What should be checked when replacing this motor on an existing machine?

Check the full motor reference, rated electrical data, encoder signal type, shaft and coupling arrangement, mounting interface, and drive configuration. If the existing motor uses absolute feedback, the change to incremental feedback may also require modifications to the homing or reference procedure.

Why might the axis need to home after power-up?

An incremental encoder reports relative movement rather than providing the same absolute position information as an absolute encoder. Depending on the machine’s control design, the controller may need a reference sensor or homing movement to establish the axis position before position-dependent production operations can begin.