SIEMENS SIMOTICS SD 1LE5 series low-voltage motor



SIEMENS SIMOTICS SD 1LE5 series low-voltage motor

Overview and Product Positioning

Scope of application: Focusing on SIMOTICS SD 1LE5 series cast iron shell low-voltage three-phase asynchronous motors, with machine base sizes covering 400-450 and rated power of 355-1000kW, mainly used in industrial equipment such as pumps, fans, compressors, conveyors, extruders, cranes, etc;

Core series differentiation:

Series models, efficiency levels, key characteristics, applicable scenarios

1LE5534 IE4 (ultra efficient) low starting current, suitable for global certification, dual use of power grid/frequency converter with high energy efficiency requirements for general industrial scenarios

1LE5533 IE3 (Efficient Add Version) basic and efficient configuration, high cost-effectiveness, focusing on standard operating conditions and conventional industrial drive needs

1LE5583 IE3 (Efficient Pro Edition) multi voltage adaptation (380-690V), high starting torque project type business, frequency converter priority scenario

Product core positioning

Design concept: Modular structure (supporting terminal box rotation, installing encoder/brake), high power density (compact size suitable for small spaces), digital compatibility (supporting SIMOTICS Digital Data App to obtain data);

Compliance: Complies with the IEC 60034 series standards, EN 60034-30-1 efficiency standards, CE certification, and some versions comply with NEMA ISO14001 and UL/CSA requirements (D30/D31).

Key technical parameters

1. Basic electrical parameters (50Hz standard operating conditions)

Parameter category 1LE5534 (IE4) 1LE5533 (IE3) 1LE5583 (IE3 Pro)

Power range 355-1000kW 355-1000kW 335-980kW

Number of poles 2/4/6/8 poles 2/4/6/8 poles 2/4/6/8 poles

Rated speed 2988-744rpm (such as 2-pole 3000rpm, 8-pole 750rpm) 2986-742rpm 2988-744rpm

Rated torque 1790-8100Nm 1790-8100Nm 1600-7700Nm

Efficiency (4/4 load) 95.8% -97.5% 95.6% -97.0% 95.8% -97.4%

Power factor (cos φ) 0.79-0.91 0.80-0.91 0.80-0.91

Locking torque/rated torque 1.2-2.2 times 1.2-2.2 times 1.2-2.2 times 1.2-2.2 times

Locked rotor current/rated current 6.5-7.7 times 6.2-7.5 times 6.5-7.7 times

2. Environmental and structural parameters

Temperature and altitude:

Standard ambient temperature: -20~40 ℃, installation height ≤ 1000m;

Special adaptation: Low temperature version (-50~40 ℃, D02）、 Medium low temperature version (-40~40 ℃, D03）、 High humidity version (30-60g/m ³, N30; 60-100g/m ³, N31);

Derating coefficient: When the ambient temperature is greater than 40 ℃ or the installation height is greater than 1000m, it is necessary to follow thek HT Reduction, for example:

Installation height (m) Environmental temperature 30 ℃ Environmental temperature 40 ℃ Environmental temperature 45 ℃ Environmental temperature 50 ℃

1000 1.07 1.00 0.96 0.92

2000 1.00 0.94 0.90 0.86

3000 0.92 0.86 0.82 0.79

Protection and insulation:

Protection level: standard IP55, optional IP56 (H22), IP65 (H20);

Insulation System: DURIGNIT IR 2000, Temperature Class 155 (F), Insulation Voltage ≤ 720V (IVIC Class C, Suitable for Peak Voltage of Frequency Converter);

Anti corrosion coating: Standard S00 (RAL 7030 stone gray, C2 grade), optional S03 (marine grade C3), S04 (marine grade C5), S05 (internal coating).

Cooling method:

Cooling method code applicable scenario key parameters

Self ventilation IC411 standard operating condition 2-8 pole universal, fan rotates with rotor

Forced ventilation IC416 low-speed high load independent drive fan (F70), requires separate power supply

IC418 without external fan/fan cover relies on external airflow for cooling, requiring an external fan to provide airflow of ≥ 1.2m ³/min

Selection and Ordering Guide

1. Six step selection method

Clear requirements: Determine the rated power (kW), speed (rpm), voltage/frequency (e.g. 400V 50Hz), protection level (IP55), and installation structure (IM B3);

Pre selection type: Select sub series (such as 1LE5534 for IE4) based on environmental conditions (temperature>40 ℃ requires derating) and special requirements (anti-corrosion/low temperature);

Model selection: Match the machine base number, pole number, and rated torque from the selection table to determine the basic model (such as 1LE5534-4AB33);

Special version: Select additional options (such as insulated bearing L51, anti condensation heater Q02, terminal box rotating R09);

Confirm dimensions: Check the installation dimensions (such as the base length and flange aperture of IM B3), refer to the "Dimensions" section of the manual;

Supporting frequency converter: If a frequency converter drive is required, refer to Siemens Catalog D11/D18.1 to select the appropriate model.

2. Model coding rules (16 bit structure)

Position 1-7: Motor type (e.g. 1LE5534=IE4 cast iron motor);

Position 8-12: Machine frame number+number of poles+voltage (e.g. 4AB33=400 machine frame+4 poles+400V Δ/690VY);

Position 13-16: Voltage/Structure/Protection/Terminal Box Position (e.g. 4CB2=400V+IM V5+PTC Protection+Terminal Box Left 45 °);

Example: 1LE5534-4AB33-4CB2-Z H00 (IE4 motor, 400 base 4-pole, 400V, IM V5 structure, PTC protection, terminal box left 45 °, with protective cover).

Special configuration and adaptation options

1. Motor protection configuration

Protection type option code function description applicable scenarios

PTC thermistor Q11 1 PTC (2 terminals), basic overload protection for over temperature trip

Q12 2 2 PTC (4 terminals), scenarios requiring graded protection for over temperature alarm and tripping

KTY84 sensor Q23 1 KTY84 (2 terminals), real-time temperature monitoring requires precise temperature measurement in frequency converter scenarios

Pt1000 resistor Q35 1 Pt1000 (2 terminals), wide temperature range temperature measurement (-40~300 ℃), high or low temperature special working conditions

Bimetallic sensor Q31 with 3 bimetallic pieces (2 terminals), overload tripping in conventional grid driving scenarios

2. Structural adjustment options

Terminal box configuration:

Rotation: It can rotate 90 ° (R10/R11), 180 ° (R12), and supports input from both the drive and non drive ends;

Increase: Choose R50 to upgrade to 1XB7750 terminal box (supports 300mm ² cable);

Location: Optional top (0/1), side (5/6), bottom (9+R7L/R7R).

Shaft extension and bearings:

Axis extension: Standard single axis extension (DE), optional second axis extension (NDE, L05), non-standard axis extension (Y58/Y59);

Bearings: Standard ball bearings (such as 6224 C3 for 400 machine base 4-pole), optional reinforced bearings (L22, resistant to greater cantilever force), insulated bearings (L50=DE insulation, L51=NDE insulation).

3. Environmental adaptation options

Environmental Requirement Options Code Core Features Applicable Scenarios

The S03 coating thickness in the marine environment is 180 μ m, resistant to 5% acid and alkali, and has a C3 corrosion level. It is used in coastal factories

Marine environment S04 coating thickness of 240 μ m, salt spray resistance, C5 corrosion grade for offshore platforms and port equipment

Low temperature environment D02, resistant to -50 ℃, suitable for low-temperature sealing in polar or freezing workshops

N31 high humidity environment, resistant to 100g/m ³ humidity, with stainless steel nameplate and closed drainage hole for wet and hot workshop and food processing

Anti condensation Q02 230V anti condensation heater (240W), to avoid winding condensation intermittent operation or high humidity shutdown scenarios

Installation and maintenance specifications

1. Installation requirements

Fixed method:

Machine base type (IM B3): fixed with 10.9 grade screws, with tightening torque in accordance with standards (M5=7.6Nm, M6=13.2Nm, M8=31.8Nm);

Flange type (IM B5/IM V1): The flange size complies with DIN 42948400 machine base flange aperture 940mm (FF type), 1000mm (A type), and the number of bolts is 8.

Wiring specifications:

Cable cross-section: power cable ≥ 2.5mm ² (2.5mm ² corresponds to 21A), signal cable 0.5mm ²;

Grounding: The protective grounding wire (PE) needs to be directly connected to the power module, and the shielding layer needs to be grounded 360 ° (using EMC clamps);

Terminal box: Conventional terminal box TB3R61 (maximum capacity for 240mm ² cable), optional 1XB7750 (maximum capacity for 300mm ² cable).

2. Maintenance points

Bearing maintenance:

Re lubrication interval: 4000 hours for 2-pole motors on 400 frames, 6000 hours for 4-8 pole motors; 3000 hours for 2-pole motors on 450 frames, 6000 hours for 4-8 pole motors;

Lubricating grease type: It is recommended to use Siemens specified lubricating grease, with a replenishment amount of 1/3-1/2 of the internal space of the bearing;

Status monitoring: SPM impact pulse measurement interface (Q01) can be optionally installed to monitor bearing vibration in real time.

Routine inspection:

Cycle: There is no fixed cycle, and the following situations need to be checked: motor abnormal noise, increased vibration, increased current, and surface temperature exceeding 120 ℃;

Content: Clean up foreign objects on the surface of the motor, check the cable shielding layer, verify the temperature sensor signal, and confirm that there are no leaks in the cooling circuit.

Scrap and Compliance

Scrap process:

Power off and wait for the DC bus to discharge (≥ 60s), cool the motor for more than 30 minutes;

Drain the cooling circuit (if necessary) and clean the chips/dust inside the motor;

Disassemble in reverse order of installation (first remove primary components, then remove secondary components);

Classified recycling: Metal components (iron/aluminum), electronic components (windings/cables), insulation materials, permanent magnet components need to be magnetized at 300 ℃ or above for 30 minutes.

Compliance requirements:

Compliant with EN 10204 (Material Certification), EN ISO 12944-5 (Anti Corrosion Coatings), RoHS (Restriction of Hazardous Substances);

Waste packaging: PE-HD/PE-LD/PP/PS materials are recyclable, and wood can be incinerated.