Technical Specifications

FAQ

1. What type of servo motor is 1FK7080-5AF71-1AG0?
1FK7080-5AF71-1AG0 is a Siemens SIMOTICS S-1FK7 permanent-magnet synchronous servo motor designed for industrial motion-control applications. It has a rated power of 2.14 kW, a rated speed of 3000 rpm, and a rated torque of 6.8 Nm. The motor uses natural cooling and is designed for flange mounting. It can be used in machine tools, automation equipment, handling systems, production machinery, and other applications requiring controlled speed and precise motion.

2. What are the rated speed and rated torque of 1FK7080-5AF71-1AG0?
The motor has a rated speed of 3000 rpm and a rated torque of 6.8 Nm, with a standstill torque of 8 Nm. These values should be evaluated together with the servo drive, mechanical load, load inertia, acceleration and deceleration profile, and operating cycle. For applications involving frequent starts and stops or high dynamic loads, the required peak torque and current should also be checked to ensure that the motor and drive have sufficient capacity.

3. What encoder is used on 1FK7080-5AF71-1AG0?
This model uses an incremental SIN/COS 1 Vpp encoder with a resolution of 2048 pulses per revolution. The encoder supplies speed and position feedback to the servo drive for closed-loop control. During commissioning, the encoder configuration in the drive should correspond to the actual motor. If feedback alarms occur, inspect the encoder cable, connector contacts, shielding, and wiring. Incorrect feedback configuration or an unstable signal may cause positioning deviations, speed fluctuations, or servo enable problems.

4. Does 1FK7080-5AF71-1AG0 have a holding brake?
No. The 1FK7080-5AF71-1AG0 configuration does not include an integrated holding brake. If the application requires the shaft or load to remain mechanically secured when the servo is disabled, an external holding or braking device may be necessary. This is particularly important for vertical axes and gravity-loaded mechanisms. The external brake should be properly coordinated with the servo control sequence to prevent uncontrolled load movement during stopping, power loss, or system restart.

5. What cooling method does 1FK7080-5AF71-1AG0 use?
The motor uses natural cooling and normally does not require a separate cooling fan. Effective heat dissipation depends on the installation environment, ambient temperature, motor load, and duty cycle. Adequate ventilation should therefore be maintained around the motor. Continuous operation under high load or in an environment with poor heat dissipation can increase motor temperature. For demanding applications, the actual operating cycle and thermal conditions should be evaluated before continuous operation.

6. Which mounting configurations are supported by 1FK7080-5AF71-1AG0?
The motor is designed for IM B5 flange mounting and can also be installed in IM V1 and IM V3 configurations. The mounting surface should provide sufficient mechanical rigidity, and the motor shaft should be correctly aligned with the driven mechanism. Excessive radial or axial loads should be avoided because they can increase bearing stress and vibration. Proper coupling alignment is particularly important in high-speed applications and systems involving frequent acceleration, deceleration, or direction changes.

7. How should I troubleshoot 1FK7080-5AF71-1AG0 if the motor does not rotate?
Begin by checking the servo drive for active alarms and confirming that the required enable signal has been issued. Then inspect the motor power supply, power cable, signal connections, encoder cable, and grounding. Verify that the motor parameters configured in the drive match 1FK7080-5AF71-1AG0. If an encoder alarm appears, check the feedback cable and connector for loose contacts, damage, or incorrect wiring. Because this configuration does not include an integrated holding brake, also verify that the connected mechanical system is not locked or obstructed. Finally, check for excessive load or mechanical seizure.

8. What should be checked if 1FK7080-5AF71-1AG0 has vibration or positioning errors?
Start by checking the mechanical system, including shaft alignment, coupling condition, mounting bolts, backlash, and the driven mechanism. Mechanical misalignment or looseness can cause vibration and positioning errors even when the motor itself is functioning normally. Next, inspect the SIN/COS encoder feedback circuit and verify that the feedback signal remains stable during operation. The motor identification data, current limits, speed-loop parameters, position-control settings, and acceleration parameters should also be reviewed. If vibration occurs mainly during acceleration or deceleration, the load inertia and servo tuning should be evaluated. Drive alarm history and motor temperature can provide further information when determining the root cause.