​Detailed Explanation of Siemens 1FL6034-2AF21-1LH1 Servo Motor

 I. Model Analysis

The 1FL6034-2AF21-1LH1 is a typical model of Siemens' V90 series low-inertia servo motors, which is suitable for industrial automation scenarios with high requirements for high-precision positioning and dynamic response. The model coding rules are as follows:

- **1FL6**:

  - **1**: Product series (SIMOTICS servo motor).

  - **FL**: Functional type (Permanent magnet synchronous servo motor).

  - **6**: Design serial number (V90 series).

- **034**:

  - **03**: Shaft height (30mm, corresponding to the motor size).

  - **4**: Installation method (Standard flange installation).

- **2AF21**:

  - **2**: Voltage level (230V three-phase).

  - **A**: Encoder type (20-bit absolute encoder with 12-bit multi-turn).

  - **F**: Brake configuration (With brake).

  - **21**: Winding type (Standard winding).

- **1LH1**:

  - **1**: Protection class (IP65, dustproof and waterproof).

  - **L**: Shaft end type (Smooth shaft, tolerance N).

  - **H1**: Special configuration (Without keyway, with sealing ring).

 II. Core Technical Parameters  Siemens converter 6SE6440-2UD42-0GA1

 III. Application Scenarios

1. **Industrial Automation*Siemens V20 Inverter 15KW of Model 6SL3210-5BE31-5UV0**:  

   - **Machine tool feed system**: Cooperates with the numerical control system to achieve high-precision positioning (such as machining centers, grinding machines).  

   - **Robot joint drive**: The low-inertia characteristic improves the dynamic response speed (such as SCARA robots).  

2. **Packaging Machinery*Chint converters (NVF2G-18.5/TS4 or NVF2G-18.5/PS4)*:  

   - **Labeling machine**: Precisely controls the position of labels to ensure the labeling accuracy.  

   - **Pillow packaging machine**: Servo synchronous control of film conveying and cutting.  

3. **Electronic Manufacturing*AB Inverter 25B-D043N114*:  

   - **Semiconductor equipment**: Drives the wafer handling robot arm, supporting nanometer-level positioning.  

   - **SMT mounter**: Mounts electronic components at high speed, with a repeat positioning accuracy of ±0.02mm.  

4. **Logistics and Warehousing**:  

   - **AGV cart**: Achieves path tracking and precise parking.  

   - **Sorting system**: Quickly responds to sorting instructions and improves the throughput efficiency.  

IV. Accessories and Extensions

1. **Optional Accessories**:  

   - **Brake**: The model suffix contains "F" (such as 2AF21), which supports power-off braking and maintains the position of the vertical axis load.  

   - **Encoder**: An incremental encoder (such as 1FL6034-2AF21-1LA1) or an absolute encoder with higher resolution can be selected.  

   - **Connector**: Compatible with MOTION-CONNECT 300 cables (such as 6FX3002-5CK01-1BA0), supporting quick plugging and unplugging.  

2. **Drive Compatibility**:  

   - **SINAMICS V90**: It is recommended to be equipped with V90 PN or pulse-type drivers, supporting PROFINET or pulse control.  

   - **Third-party drivers**: The voltage (230V three-phase) and encoder interface (such as EnDat 2.2) need to be matched.  

V. Maintenance and Fault Handling

1. **Daily Inspection**:  

   - **Temperature monitoring**: The winding temperature during operation should be ≤ 130℃ (when the ambient temperature is 40℃). Abnormal heating may be caused by overload or poor heat dissipation.  

   - **Vibration detection**: Use a vibration tester to measure the vibration of the bearing (allowable value ≤ 2.8 mm/s). Exceeding the standard may indicate bearing wear.  

2. **Regular Maintenance**:  

   - **Cleaning**: Use compressed air (≤ 0.2 MPa) to remove dust every quarter to avoid the accumulation of metal chips.  

   - **Lubrication**: Replace the bearing lubricating grease (it is recommended to use Klüber NBU 15) every 2000 hours or every year (whichever comes first).  

3. **Common Faults and Handling**:  

 VI. Suppliers and Procurement

1. **Domestic Channels**:  

   - **Authorized dealers**: Siemens' industrial authorized distributors (such as Shanghai Gongzhida, Nanjing B&R).  

   - **E-commerce platforms**: Alibaba, JD Industrial Products (The price is about ¥1600~¥1872, including 13% VAT).  

2. **International Procurement**:  

   - **Siemens' global official website**: Supports online model selection and inquiry.  

   - **Cross-border platforms**: OKmarts, RS Components (The price is about $220~$260, excluding freight).  

3. **Notes**:  

   - **Discontinuation risk**: Some models may be gradually replaced by the 1FL7 series. It is recommended to confirm the life cycle status when purchasing.  

   - **Customization service**: It supports special voltage (such as 400V) or outlet methods (such as side outlet), and needs to be reserved 4 to 6 weeks in advance.  

 VII. Alternative Models and Upgrade Suggestions

1. **Performance Substitution**:  

   - **1FL6034-2AF21-1LA1**: Without a brake, other parameters are the same, suitable for horizontal axis loads.  

   - **1FL6034-2AF21-1LG1**: With a keyway shaft, it is convenient for mechanical connection and suitable for scenarios where torque needs to be transmitted.  

2. **Technical Upgrade**:  

   - **1FL7034-2AF21-1LH1**: The new generation of SIMOTICS S-1FL7 series, supporting higher overload (3.5 times) and faster response.  

   - **1FT7034-5AK71-1EH1**: High dynamic performance motor, suitable for high-speed precision machining.  

 VIII. Installation and Wiring

1. **Mechanical Installation**:  

   - **Flange fixing**: Use M4 bolts (torque 2.5 N·m) to ensure that the concentricity between the motor and the load shaft is ≤ 0.05mm.  

   - **Shaft end protection**: Avoid axial impact during installation, and it is recommended to use an elastic coupling.  

2. **Electrical Connection**:  

   - **Power cable**: Use a 4×0.75 mm² cable and connect it to the U/V/W terminals of the driver.  

   - **Encoder cable**: Use the prefabricated cable 6FX3002-2DB20-1AF0, and the shielding layer needs to be grounded.  

   - **Brake cable**: Connect it to the BRAKE+/- terminals of the driver, with a voltage of 24V DC.  

 IX. User Reviews

- **Advantages**:  

  - Low-inertia design, acceleration time ≤ 50ms, suitable for scenarios with frequent starts and stops.  

  - Integrated absolute encoder, supporting quick zero return and position memory.  

  - Protection class IP65, can operate stably in dusty or humid environments.  

- **Disadvantages**:  

  - The price is higher than that of domestic similar products (such as Inovance IS620N), but the performance is better.  

  - The brake response time is relatively long (about 50ms), and a safety margin needs to be reserved in vertical axis applications.  

 Conclusion

The Siemens 1FL6034-2AF21-1LH1 servo motor has become a mainstream choice in the field of industrial automation with its high precision, high dynamic response and reliability. Its rich accessory options and deep compatibility with V90 drivers further expand the application scenarios. If higher performance or special configuration is required, an upgrade to the 1FL7 series or contacting Siemens' customization service can be considered. During maintenance, it is necessary to pay attention to regularly checking the status of the encoder and brake to ensure the long-term stable operation of the equipment.