Product Overview

The Siemens 1FK7060-5AF71-1AA0 SIMOTICS S Synchronous Servo Motor is a permanent-magnet synchronous servo motor in the SIMOTICS S-1FK7 Compact family. It has a rated torque of 4.7 Nm at a 100 K temperature rise, a rated speed of 3,000 rpm and an optimum operating power of 1.5 kW. Its naturally cooled construction makes it suitable for industrial motion-control applications that do not require a separate motor-cooling circuit.

This variant uses an incremental sin/cos encoder with a 1 Vpp signal and 2,048 pulses per revolution. The encoder supplies motion feedback to a compatible servo drive, allowing the drive to regulate motor speed and position. Its keyed shaft provides a positive mechanical connection to a compatible coupling or transmission component, while the absence of an integrated holding brake makes it necessary to evaluate load retention separately where the machine requires it.

The motor’s power and signal connectors can be rotated through 270°, which helps when planning cable routing inside machine enclosures and around restricted mounting locations. Its IP64 protection rating and IM B5 mounting arrangement should also be considered when selecting the installation position and planning environmental protection.

For replacement selection, the important details are the incremental encoder interface, keyed shaft, motor-drive compatibility and required torque over the operating cycle. Motors from the same 1FK7 family may look similar but differ in feedback technology, brake configuration and shaft arrangement.

Technical Specifications

Product Features

• Permanent-magnet synchronous motor: Produces controlled rotary torque when operated with a compatible servo drive.
• Incremental encoder feedback: Supplies rotor-motion information for closed-loop speed and position regulation.
• 2,048-pulse encoder resolution: Supports motion applications requiring repeatable movement and feedback-based control.
• Keyed shaft: Provides a mechanical interface for compatible couplings and transmission components.
• Natural cooling: Uses the specified cooling arrangement without requiring a separate motor-cooling circuit.
• No integrated holding brake: Requires separate consideration of load-holding needs in applications where the motor must remain stationary after de-energization.
• Rotatable connectors: Allows power and signal connector orientation to be adjusted through 270° for cable-routing purposes.
• KTY84 temperature monitoring: Provides winding-temperature information for compatible drive and monitoring arrangements.
• Multiple mounting orientations: Supports IM B5, IM V1 and IM V3 mounting arrangements, subject to the applicable installation requirements.

Working Principle

The 1FK7060-5AF71-1AA0 converts electrical energy into mechanical rotation through the interaction between the stator’s magnetic field and the rotor’s permanent magnets. A compatible servo drive regulates the current supplied to the motor windings according to the commanded torque, speed or position.

As the shaft rotates, the incremental sin/cos encoder generates feedback signals. The servo drive evaluates these signals to determine rotor movement and speed, then adjusts the motor current to maintain the requested motion. In a packaging machine, for example, this feedback can help control the movement of a feed mechanism or indexing axis during repeated production cycles.

Because the encoder is incremental rather than absolute, the control system may need to establish a reference position after startup or power loss. The appropriate homing method depends on the machine’s reference sensors, controller configuration and positioning requirements.

The keyed shaft transfers motor torque through a compatible mechanical connection. Proper coupling alignment helps limit vibration and unwanted shaft loading. Since this motor has no integrated holding brake, applications involving vertical axes or loads that could move when power is removed need a suitable external holding arrangement where required.

Role in a SIMOTICS S Servo Control Architecture

The 1FK7060-5AF71-1AA0 operates as the rotary actuator in a closed-loop motion-control system. The motion controller defines the required movement, the servo drive regulates motor current, and the incremental encoder supplies feedback for controlling the axis.

Motion Controller → Compatible Servo Drive → 1FK7060-5AF71-1AA0 Motor → Mechanical Transmission → Machine Axis

Industrial Applications

Installation and Maintenance

1. Verify the motor reference: Confirm that 1FK7060-5AF71-1AA0 matches the required torque, encoder, shaft and brake configuration.
2. Check drive compatibility: Verify that the selected servo drive supports the motor’s electrical ratings and incremental sin/cos 1 Vpp encoder interface.
3. Confirm the mounting arrangement: Ensure that the machine interface matches the specified IM B5, IM V1 or IM V3 installation.
4. Isolate the equipment: Follow the electrical isolation procedure and secure the driven mechanism before installation or maintenance.
5. Inspect the shaft interface: Check the feather key, keyway and mating coupling for damage, wear or incorrect fit.
6. Check mechanical alignment: Verify coupling alignment and ensure that the shaft is not subjected to excessive radial or axial loading.
7. Connect the power cable: Confirm the motor power connector, cable specification and drive terminal arrangement before energizing the system.
8. Connect the encoder cable: Verify the sin/cos feedback wiring, connector condition and compatibility with the selected drive.
9. Configure motor parameters: Enter the correct motor and encoder data in the drive, including the applicable feedback resolution.
10. Check temperature monitoring: Verify the KTY84 sensor connection and compatible monitoring configuration where used.
11. Perform controlled commissioning: Test rotation direction, encoder response, speed regulation and positioning behavior before normal operation.
12. Record maintenance findings: Document the motor reference, drive settings, encoder configuration and any abnormal noise, vibration or temperature observations.

Compatible System Components

Recommended Related Models

Key Advantages

• Delivers 4.7 Nm rated torque at a 100 K temperature rise.
• Supports closed-loop motion control through incremental sin/cos encoder feedback.
• Uses a keyed shaft for compatible mechanical transmission.
• Supports natural cooling and multiple mounting orientations.
• Includes KTY84 winding-temperature monitoring.
• Allows connector orientation adjustment through 270°.

Technical FAQs

What is the difference between the 1FK7060-5AF71-1AA0 and the resolver-equipped 1FK7060-5AF71-1PA0?

The 1FK7060-5AF71-1AA0 uses an incremental sin/cos encoder with a 1 Vpp signal and 2,048 pulses per revolution. The 1PA0 variant uses resolver feedback. The replacement must match the drive’s supported feedback interface and the machine’s control configuration.

Does the incremental encoder retain the machine’s absolute position after power loss?

No. Incremental feedback records changes in position rather than independently providing an absolute machine position. Where the application requires a known reference after startup, the control system may need a homing procedure.

Can the motor hold a suspended load when power is removed?

This variant has no integrated holding brake. A vertical axis or suspended load may require an external brake or another suitable load-holding mechanism, selected according to the machine’s load and safety requirements.

What should be checked if the motor develops abnormal temperature during operation?

Review the motor load, acceleration profile, operating cycle, cooling conditions and drive configuration. Also inspect the KTY84 temperature-sensor connection and monitoring settings to distinguish an actual thermal issue from a feedback or configuration problem.