Technical Specifications

FAQ

1. What type of motor is the Siemens 1FT7046-5AF70-1CA0?
The Siemens 1FT7046-5AF70-1CA0 is a SIMOTICS S 1FT7 permanent-magnet synchronous servo motor designed for industrial motion-control applications. It provides precise speed, torque, and position control and is suitable for applications such as machine tools, automated production equipment, positioning systems, and other servo-controlled machinery.

2. What are the rated speed and rated torque of the 1FT7046-5AF70-1CA0?
The motor has a rated speed of 3,000 rpm and a rated torque of 5.6 Nm. Its static torque at 100 K reaches 7.0 Nm. For dynamic motion applications, the motor can also provide significantly higher short-term torque, with a specified maximum torque of 31 Nm, provided that the drive configuration and thermal operating conditions remain within their permitted limits.

3. What encoder is installed on the 1FT7046-5AF70-1CA0?
The motor is equipped with an AM24DQI absolute encoder. It provides 24-bit single-turn and 12-bit multiturn resolution and communicates with the drive through DRIVE-CLiQ. This feedback arrangement allows the control system to obtain accurate shaft-position information and is well suited to positioning applications, synchronized axes, and other motion-control tasks where precise feedback is required.

4. Does the Siemens 1FT7046-5AF70-1CA0 have a holding brake?
No. This configuration is supplied without an integrated holding brake. If the application requires the motor shaft to remain mechanically secured when the motor is stopped or power is removed, an external holding or braking mechanism may be necessary. For vertical axes and gravity-loaded mechanisms, the external holding system should be properly sized for the actual load and incorporated into the machine’s safety concept.

5. What is the maximum permissible speed of this servo motor?
The maximum permissible mechanical speed is 9,000 rpm, while the maximum permissible inverter speed is 5,200 rpm. When operating the motor with a servo drive, the applicable inverter limit must be respected. The final speed setting should also consider the connected load, transmission ratio, coupling, shaft dynamics, vibration characteristics, and mechanical speed limits of the complete machine.

6. What cooling method does the 1FT7046-5AF70-1CA0 use?
The motor uses natural cooling. No separate forced-air cooling system is required for its standard configuration. During installation, sufficient space should be maintained around the motor to allow heat to dissipate. Continuous operation at high load or in an enclosed machine can increase thermal stress, so ambient temperature, ventilation, duty cycle, and load profile should be considered when determining the permissible continuous operating condition.

7. What mounting configuration does the 1FT7046-5AF70-1CA0 use?
The motor uses IM B5 flange mounting and supports IM V1 and IM V3 mounting positions. It features a compact recessed flange and a keyed shaft for mechanical power transmission. During installation, the motor and driven mechanism should be accurately aligned, and the coupling should be installed without excessive radial or axial forces. Proper mechanical alignment helps reduce vibration and bearing loads during operation.

8. What should be checked when commissioning the Siemens 1FT7046-5AF70-1CA0?
Before commissioning, verify that the correct motor data and identification are configured in the SINAMICS drive. Check the power connections, protective grounding, DRIVE-CLiQ communication, encoder feedback, and cable routing. Confirm that the absolute encoder is correctly recognized by the drive before enabling the axis. Perform an initial low-speed test to verify rotation direction, position feedback, current response, acceleration, and deceleration. If encoder communication faults, abnormal current, unexpected positioning behavior, excessive vibration, or unusual temperature occurs, stop the system and inspect the drive parameters, feedback connection, mechanical coupling, and load conditions.