- Model Analysis
The 1FL60342AF211LH1 is a typical model of Siemens‘ V90 series lowinertia servo motors, which is suitable for industrial automation scenarios with high requirements for highprecision 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 threephase).
A: Encoder type (20bit absolute encoder with 12bit multiturn).
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).
- Core Technical Parameters Siemens converter 6SE64402UD420GA1
| Parameter | Value | Explanation |
| Rated power | 0.4 kW | Continuous operation power. |
| Rated speed | 3000 rpm | Standard operation speed. |
| Peak torque | 3.81 N·m | Shortterm overload capacity (3 times the rated torque). |
| Encoder | 20bit absolute (17 bits for single turn + 12 bits for multiturn) | Resolution up to 17 bits, supporting position memory when power is off. |
| Protection class | IP65 | Dustproof and waterproof, suitable for harsh industrial environments. |
| Duty cycle | S1 (Continuous duty) | Can operate at full load for a long time. |
| Insulation class | F | Temperature resistance class 155℃ (Bclass temperature rise). |
| Weight | 1.9 kg | Lightweight design, convenient for installation. |
III. Application Scenarios
- Industrial AutomationSiemens V20 Inverter 15KW of Model 6SL32105BE315UV0:
Machine tool feed system: Cooperates with the numerical control system to achieve highprecision positioning (such as machining centers, grinding machines).
Robot joint drive: The lowinertia characteristic improves the dynamic response speed (such as SCARA robots).
- Packaging MachineryChint converters (NVF2G18.5/TS4 or NVF2G18.5/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.
- Electronic ManufacturingAB Inverter 25BD043N114:
Semiconductor equipment: Drives the wafer handling robot arm, supporting nanometerlevel positioning.
SMT mounter: Mounts electronic components at high speed, with a repeat positioning accuracy of ±0.02mm.
- Logistics and Warehousing:
AGV cart: Achieves path tracking and precise parking.
Sorting system: Quickly responds to sorting instructions and improves the throughput efficiency.
- Accessories and Extensions
- Optional Accessories:
Brake: The model suffix contains “F” (such as 2AF21), which supports poweroff braking and maintains the position of the vertical axis load.
Encoder: An incremental encoder (such as 1FL60342AF211LA1) or an absolute encoder with higher resolution can be selected.
Connector: Compatible with MOTIONCONNECT 300 cables (such as 6FX30025CK011BA0), supporting quick plugging and unplugging.
- Drive Compatibility:
SINAMICS V90: It is recommended to be equipped with V90 PN or pulsetype drivers, supporting PROFINET or pulse control.
Thirdparty drivers: The voltage (230V threephase) and encoder interface (such as EnDat 2.2) need to be matched.
- Maintenance and Fault Handling
- 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.
- 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).
- Common Faults and Handling:
| Fault Phenomenon | Possible Cause | Solution |
| Motor overheating | Overload, fan failure, too high ambient temperature | Reduce the load, check the fan, and improve the ventilation conditions |
| Encoder alarm | Loose cable, encoder damage | Tighten the cable, replace the encoder |
| Brake failure | Burned brake coil, mechanical jamming | Check the coil resistance, clean the brake mechanism |
1.Suppliers and Procurement
- Domestic Channels:
Authorized dealers: Siemens’ industrial authorized distributors (such as Shanghai Gongzhida, Nanjing B&R).
Ecommerce platforms: Alibaba, JD Industrial Products (The price is about ¥1600~¥1872, including 13% VAT).
- International Procurement:
Siemens’ global official website: Supports online model selection and inquiry.
Crossborder platforms: OKmarts, RS Components (The price is about $220~$260, excluding freight).
- 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
- Performance Substitution:
1FL60342AF211LA1: Without a brake, other parameters are the same, suitable for horizontal axis loads.
1FL60342AF211LG1: With a keyway shaft, it is convenient for mechanical connection and suitable for scenarios where torque needs to be transmitted.
- Technical Upgrade:
1FL70342AF211LH1: The new generation of SIMOTICS S1FL7 series, supporting higher overload (3.5 times) and faster response.
1FT70345AK711EH1: High dynamic performance motor, suitable for highspeed precision machining.
VIII. Installation and Wiring
- 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.
- 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 6FX30022DB201AF0, 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.
- User Reviews
Advantages:
Lowinertia 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 1FL60342AF211LH1 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 longterm stable operation of the equipment.
