SIEMENS SIMOTICS SD 1LE7 series low-voltage motor (shaft height 71-315)

Protection: Apply rust inhibitor (such as Tectyl) to the shaft end/flange surface. For long-term storage (>12 months), rotate the rotor monthly (to avoid bearing indentation), drain the cooling system, and lock the interface;

Rotor fixing: During transportation, rotor fixing components need to be installed, and vertically installed motors need to be stored in a vertical position.

2. Mechanical installation

General rules:

Bolt: Only use new bolts of grade 8.8 or above, with no oil/paint on the fixing surface and a surface roughness of Rz 10-40 μ m;

Tightening torque: M5=5Nm, M6=8Nm, M8=20Nm, M10=40Nm, optional Loctite 243 anti loosening.

Installation in different scenarios:

Horizontal foot installation (IM B3): Adjust the levelness with shims, with a support surface flatness of ≤ 0.2mm (shaft height ≥ 180);

Flange installation (IM B5): The flange centering surface is coated with paste, and the bolts are pre tightened in a 120 ° distribution, and finally tightened in diagonal order;

Vertical installation (IM V1): The rotor needs to be supported (to avoid bearing overload), and a protective cover should be added when the shaft end is facing downwards (to prevent foreign objects from falling in).

Alignment requirements:

Speed (rpm) Parallel deviation (mm) Angular deviation (mm/100mm Coupling diameter)

750 0.09 0.09

1500 0.06 0.05

3000 0.03 0.025

3. Electrical connection

Safety requirements:

Power supply: Only connect to the matching frequency converter or power grid, and do not directly connect to the three-phase AC power grid (frequency converter drives the motor);

Grounding: The PE wire is directly connected to the power module, and the grounding terminal inside the terminal box needs to be fastened with M5 bolts (torque 1.8-2.5Nm).

Specific connection:

Power cable: 4-core (PE=green yellow, U=black, V=black, W=black), core wire cross-section selected according to rated current (2.5mm ² corresponds to 21A, 16mm ² corresponds to 66A);

Control cable: The temperature sensor/anti condensation heating cable needs to be wired separately from the power cable, and the shielding layer should be grounded at one end;

Terminal marking: According to EN/IEC 60034-8, U/V/W corresponds to L1/L2/L3, and swapping any two phases can change the direction of rotation.

4. Debugging

Debugging premise:

Mechanical: Complete installation alignment, manually rotate the rotor without any obstruction;

Electrical: Insulation resistance ≥ 30M Ω, reliable PE grounding, cable gland tightened (M20 gland torque 12Nm).

Key steps:

No load test run: Power on and run for 5 minutes, check the steering (clockwise is U-V-W phase sequence) and vibration (≤ 4.5mm/s);

Load trial operation: gradually load to rated load, monitor current (≤ rated current), bearing temperature (≤ 115 ℃ alarm, ≤ 120 ℃ shutdown);

Variable frequency drive debugging: Parameterize the variable frequency drive (input motor rated current, speed, number of poles), set the avoidance frequency (38-48Hz, shaft height 315 two pole motor).

5. Operation and maintenance

Operation monitoring:

Normal parameters: current ≤ rated value, bearing temperature ≤ 90 ℃, vibration ≤ 4.5mm/s;

Troubleshooting: Motor cannot start (check for overload/phase loss), overheating (check for cooling/load), abnormal noise (check for bearings/alignment), please refer to the fault table for details.

Maintenance cycle:

Maintain project cycle content

Initial inspection: 500 operating hours/6 months. Check bolt tightness, bearing temperature, and insulation resistance

Regularly inspect 16000 operating hours/2 years, clean the cooling air duct, grease (with oil nozzle bearings), and check the grounding

Bearing replacement: 50000 operating hours (horizontal)/20000 hours (vertical). Replace bearings and shaft seals, clean the bearing chamber

Insulation testing measures insulation resistance (≥ 30M Ω) and polarization index (≥ 2) every year/after shutdown for more than 3 months

6. Scrapping and disposal

Scrap steps:

Power off → wait for capacitor discharge → cool down for 30 minutes;

Dismantle the cable and drain the coolant (compliant treatment);

Remove the fixing bolts of the motor and disassemble it in reverse order (first remove the fan cover, then remove the end cover).

Waste disposal:

Metal components: classified recycling of steel, aluminum, and copper (winding copper can be melted and recycled);

Insulation material: incineration (in compliance with environmental requirements);

Hazardous substance: Lead (CAS 7439-92-1, content ≤ 0.1%) must be disposed of in accordance with the REACH directive, and packaging materials (PE/PP) are recyclable.

Appendix and Compliance

1. Key Appendix Resources

Spare parts list: including end caps (1.40), bearings (1.60), cable glass (5.03), fans (7.04) and other spare parts models and explosion diagrams;

Tightening torque table: specify the tightening torque for different thread specifications (such as M12 bolt 70Nm, M16 cable glass 170Nm);

Terminal box dimensions: Axis height 71-90 Terminal box TB7 D04 (dimensions A=89mm, B=111mm), Axis height 250-280 Terminal box TB1 NO1 (dimensions A=233mm, B=319mm).

2. Compliance standards

Following standards: EN/IEC 60034 (Rotating Electrical Machinery), EN/IEC 60204-1 (Mechanical and Electrical Equipment), EMC 2014/30/EU (Electromagnetic Compatibility);