Siemens 1FK6042-6AF71-1TA0 Servomotor – SIMOTICS S 0.82kW
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Product Information
The Siemens 1FK6042-6AF71-1TA0 is a permanent-magnet synchronous AC servomotor from the SIMOTICS S 1FK6 series, designed for dynamic positioning and precise velocity control in automated machinery. Operating at a rated power output of 0.82 kW and a rated speed of 3000 rpm, this frame size 042 unit delivers a rated torque of 2.6 Nm and a continuous stall torque rating of 3.0 Nm. Constructed around a 6-pole stator design, the motor supports maximum operating speeds up to 6000 rpm. Physical identification features include a keyed drive shaft for reliable mechanical transmission, rugged Size 1 circular connectors for power and encoder interfaces, and an integrated 24V DC holding brake to secure vertical axis loads during power losses or emergency stops.
Integrating a replacement 1FK6042-6AF71-1TA0 unit into existing machinery is streamlined by its high-resolution EnDat absolute feedback encoder. The encoder contains an embedded electronic rating plate stored on internal EEPROM containing factory parameter settings, operational thresholds, and motor identity data. When paired with compatible Siemens motion control drives—such as the SIMODRIVE 611, MASTERDRIVES MC, or SINAMICS S120—the controller automatically reads these stored parameters upon connection, preventing manual parameter entry errors and shortening commissioning times. When swapping units, technicians should verify mechanical keyway alignment, correct pin connection at the Size 1 circular plugs, and active holding brake control. Support from ABC Industrial Parts can assist maintenance teams in sourcing pre-tested replacement units to return legacy production lines to operation.
Continuous operational monitoring for the 1FK6042-6AF71-1TA0 motor relies on integrated thermal detection and drive-level feedback. A KTY84-130 temperature sensor built directly into the stator winding streams ongoing thermal measurements to the connected drive controller, enabling proactive thermal protection against overload conditions. Diagnostic buffer entries within the host SIMODRIVE or SINAMICS controller, accessible via STARTER engineering software, provide real-time updates on velocity feedback, positional stability, and thermal status. Internal electrical faults, encoder failures, or mechanical bearing degradation are not field-repairable on the machine floor. In such cases, arranged unit servicing or acquiring a replacement through ABC Industrial Parts offers a direct path to minimizing operational downtime.
Technical Specifications
| Manufacturer | Siemens |
| Part Number | 1FK6042-6AF71-1TA0 |
| Model/Type | 1FK6042 |
| Product Family | SIMOTICS S |
| Series | 1FK6 |
| Component Type | Servo Motor |
| Rated Power | 0.82 kW |
| Rated Speed | 3000 rpm |
| Maximum Speed | 6000 rpm |
| Rated Torque | 2.6 Nm |
| Continuous Stall Torque | 3.0 Nm |
| Rated Current | 2.7 A |
| Stall Current | 2.9 A |
| Pole Count | 6 |
| Feedback System | EnDat Absolute Encoder |
| Holding Brake | Integrated 24V DC |
| Temperature Sensor | KTY84-130 Stator Winding Sensor |
| Shaft Type | Fitted Keyway |
| Connection Type | Size 1 Circular Connectors |
Programming and Configuration
Parameter identification for the 1FK6042-6AF71-1TA0 servomotor is fully automated through the integrated EnDat absolute encoder. The encoder features an embedded electronic rating plate on an internal EEPROM that stores motor specifications, including the 2.7 A rated current, 3.0 Nm stall torque, 3000 rpm rated speed, and thermal parameters. When connected to a compatible drive, these parameters are transferred automatically, eliminating the need for manual configuration.
Engineering, commissioning, and axis tuning are performed using Siemens STARTER software via the associated drive controller. Through STARTER, technicians can access live feedback, adjust control loops, monitor speed and position signals, and verify encoder operation across SIMODRIVE 611, MASTERDRIVES MC, and SINAMICS S120 automation systems.
Communication and System Integration
The 1FK6042-6AF71-1TA0 servomotor integrates into Siemens motion control platforms via Size 1 circular power and encoder feedback connectors. High-resolution positional feedback and electronic rating plate identification are transmitted from the absolute EnDat encoder directly to the drive controller interface over structured encoder cabling.
System compatibility spans multiple Siemens drive families, including SIMODRIVE 611, MASTERDRIVES MC, and SINAMICS S120. Drive units must be configured to accommodate a rated current of 2.7 A and a stall current of 2.9 A. Additionally, an external 24V DC supply connection is required to operate the integrated mechanical holding brake.
Diagnostics and Status Indication
Direct continuous temperature monitoring is provided by an integrated KTY84-130 sensor embedded inside the stator winding. This sensor transmits uninterrupted temperature readings to the host drive controller, allowing automatic thermal trip limits to prevent winding degradation caused by excessive motor loads.
System-level diagnostic data is evaluated through the diagnostic buffer of the host controller or directly via the STARTER software package. Diagnostic views display operational status, current draw, feedback accuracy, and fault states recorded by the drive during operation.
Replacement and Spare Part Considerations
When installing a replacement 1FK6042-6AF71-1TA0 motor, maintenance staff must ensure matching physical and electrical options, including the frame size 042 dimensions, keyed shaft configuration, Size 1 circular connections, and the 24V DC holding brake circuit. Thanks to the electronic rating plate inside the EnDat encoder, zero-configuration commissioning is achieved immediately upon connection to compatible Siemens drive hardware.
While the 1FK6 series has transitioned to legacy status, direct component replacement remains the fastest solution for keeping existing packaging lines, CNC machine tools, and pick-and-place equipment fully functional. For long-term plant migrations or system overhauls, Siemens designates the SIMOTICS S-1FK7 series (part number 1FK7042-2AF71-1TA0) as the direct successor motor family.
Frequently Asked Questions
Which drive systems support the Siemens 1FK6042-6AF71-1TA0 servomotor?
The motor is compatible with Siemens drive architectures including SIMODRIVE 611, SINAMICS S120, and MASTERDRIVES MC.
Does the 1FK6042-6AF71-1TA0 require manual parameter setup during replacement?
No. The integrated EnDat absolute encoder contains an electronic rating plate on an EEPROM, allowing compatible Siemens drives to read motor parameters and tuning data automatically upon connection.
Is the 1FK6042-6AF71-1TA0 motor equipped with a holding brake?
Yes, this motor features a factory-installed 24V DC holding brake designed to maintain position on vertical axes during shutoffs or power disruptions.
How is winding temperature monitored in this motor?
Thermal monitoring is conducted via an embedded KTY84-130 temperature sensor situated inside the stator winding, streaming real-time thermal data directly back to the connected drive.
What is the designated successor model for the 1FK6042-6AF71-1TA0?
Siemens designates the SIMOTICS S-1FK7 series model, part number 1FK7042-2AF71-1TA0, as the successor for system modernizations.
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