As soon as the range of motors and options is complete, it will be possible to use the 1LE1/1PC1 motors from Siemens in all areas and sectors of industry due to their numerous options. They are suitable both for special environmental conditions such as those that predominate in the chemical or petrochemical industry as well as for most climatic requirements such as those of offshore applications.
Their large range of line voltages enables them to be used all over the world.
The wide field of implementation includes the following applications:
Motors with a cast-iron housing are particularly suitable for the following severe duty applications:
Increasing energy costs have resulted in greater emphasis on the power consumption of drive systems. It is extremely important to utilize the full potential for minimizing energy consumption here to secure competitiveness today and in the future. The environment will also profit from reduced energy consumption.
This is the reason that already today we are developing a new generation of low-voltage motors. Innovative rotors create the perfect conditions for motors with a high degree of efficiency. IE1 and IE2 motors with the same output have the same dimensions. The new motors for IE2 (High Efficiency) offer considerable energy savings and protect our environment. We also consider environmental sustainability during production to preserve resources. Potting compounds and coatings are, for example, solvent-free.
The modular mounting concept provides total flexibility: Each motor is based on a uniform concept for all markets worldwide. Our motors are manufactured in accordance with the latest ecological concepts and are launched on the market step by step.
The new 1LE1 motor family is therefore one of the most compact in the world, because it is manufactured using innovative technology. For an optimized design, a compound of highly conductive materials is used in the rotor. This results in minimum rotor losses and an excellent starting and switching response.
The design of the 1LE1 motors ensures maximum flexibility and minimum installation costs. Users benefit from integral eyebolts, screw-on feet, reinforced bearing plates with optimum mechanical properties and easily accessible connection boxes. Encoders, brakes and separately driven fans can also be added without any problems. Smaller inventories make stockkeeping easier, so motor suppliers can respond to customer requirements more quickly.
The 1LE1/1PC1 motor family comprises two main series:
Output and voltage range:
0.55 ... 22 kW
Frame sizes and types of construction:
80 ... 160
750 ... 3600 rpm
Number of poles:
2, 4, 6, 8
Output and voltage range:
0.75 ... 200 kW
Frame sizes and types of construction:
100 ... 315
750 ... 3600 rpm
Number of poles:
2, 4, 6, 8
Depending on requirements, energy-saving motors for a positive energy balance are available that are compliant with the legal requirements applicable in the European economic area in accordance with EU Directive 640/2009 as well as for the North American market in accordance with US federal law EISA (Energy Independence Security Act).
The EU Directive defines the minimum efficiency for 2, 4 and 6-pole motors in the output range from 0.75 to 375 kW. The efficiency levels are grouped into three efficiency classes (IE = International Efficiency):
IE1 to IE3 efficiencies, 4-pole 50 Hz
For further information, see: http://www.siemens.com/international-efficiency
The Energy Policy Act (EPAct) was superseded in December 2010 by the Energy Independence Security Act (EISA).
With effect from December 2010, EISA has extended the legal minimum efficiency requirements and the following motors must fulfill the NEMA Premium Efficient Level:
In addition, the following motors, for example, must fulfill the NEMA Energy Efficient Level:
For details, see NEMA MG1, Table 12-11 and Table 12-12.
Exception/expansion: motors with the following parameters must comply with the NEMA Energy Efficient Level (NEMA MG Table 12-11):
For details, see NEMA MG1, Table 12-11.
The EISA act lays down that the nominal efficiency at full load and a "CC" number (Compliance Certification) must be included on the rating plate. The "CC" number is issued by the US Department of Energy (DOE). The following information is stamped on the rating plate of EISA motors which must be marked by law:
Motors with increased output and compact construction can be used to advantage in confined spaces. For a slightly longer overall length, the output is at least as high as that of the next largest shaft height. These compact motors are also optimized for efficiency. They are offered in IE1 and IE2 and therefore reduce the operating costs.
Forced-air cooled motors with surface cooling without fan cover and without external fan are mainly used for driving fans.
Naturally cooled motors with surface cooling without fan cover and without external fan are suitable for the following operating conditions:
Requirements which make an external fan disadvantageous, e. g. simple cleaning in the food industry, textile industry.
The most popular basic versions of motor series 1LE1 are available under special terms as so-called "Preferred motors". Most of the "Preferred motors" are also available with a shorter delivery time as so-called "Express motors".
The standard delivery time for "Express motors" is 1 to 2 days from the time of clarification of the order at the factory until dispatch from the factory. To determine the delivery date at the customer site, the appropriate shipping time must be added.
The complete range is covered by Price List D 81.1 P • October 2012 "0.2 Preferred and Express motors".
Motor type – Frame size– Rated output at 50 Hz (values in kW) or 60 Hz (values in hp)
IE2 High Efficiency
1LE1501 Basic Line – 0.75 … 200 kW
1LE1601 Performance Line – 0.75 … 200 kW
IE3 Premium Efficiency
1LE1503 Basic Line – 1.5 … 200 kW
1LE1603 Performance Line – 1.5 … 200 kW
NEMA Energy Efficient
1LE1521 Eagle Line Basic – 1.5 … 200 kW/2 … 250 hp
1LE1621 Eagle Line Performance – 1.5 … 200 kW/2 … 250 hp
NEMA Premium Efficient
1LE1523 Eagle Line Basic – 2.2 … 200 kW/3 … 250 hp
1LE1623 Eagle Line Performance – 2.2 … 200 kW/3 … 250 hp
There is considerable potential in the new 1LE1/1PC1 series of low-voltage motors. As a consistent further development of existing motors, the 1LE1/1PC1 motors offer numerous advantages.
Innovative rotor technology and manufacturing technology has been implemented for the IE1, IE2 and IE3 high efficiency motor variants. The energy-efficient motors are therefore considerably more compact.
The energy saving potential and lifecycle costs of the new motors can be calculated with the SinaSave software. The SinaSave program can be downloaded from the Internet using the following link: http://www.siemens.com/sinasave
The 1LE1 motors also impress customers with their extremely long life and their weight-optimized design has a positive effect on the stability of the equipment unit.
A wider range of applications
The motors are certified for worldwide use and satisfy high standards of quality (confirmed, for example, by CSA 1), UL 2), CQC 3)).
1) Canadian Standard Association
2) Underwriters Laboratories Inc.
3) China Quality Certification
The optimized housing in modern EMC design has an attractive appearance and enhances functionality. The rotatable, accessible connection boxes, integral eyebolts, screw-on feet and reinforced bearing plates ensure this.
For the same shaft height, the high-performance motors offer one complete rated output level more. We are also consistently implementing energy efficiency improvements here too. The motors are offered (based on the categories of IEC 60034-30) in various efficiency classes.
The optimized design of the motors makes installation easier in general. Encoders, brakes and separately driven fans can be retrofitted easily. Connection boxes and feet for flexible mounting can be selected. Smaller inventories make stockkeeping easier and motor suppliers can respond to customer requirements more quickly. Optimized manufacturing processes support fast availability. All motors up to 460 V can be operated either directly on the line or converter-fed.
The right motor for various challenges
The following lines are available for severe duty applications:
Comparison: Basic Line versus Performance Line
Standard from shaft height 160 upwards (optional for shaft height 100 to 132)
1) C2 and C3 are corrosion classes according to DIN EN ISO 12944. The corrosion protection must be selected in accordance with the expected corrosiveness of the environment at the installation location as well as the required service life. Five corrosion classes are defined in the above-mentioned standard, ranging from a non-corrosive indoor atmosphere (C1) to a highly corrosive industrial or marine environment (C5 I and C5 M).
The size of a motor is often an important aspect in the case of machines. For this reason, the 1LE1 motors in IE2 and IE3 are no longer than their predecessors in the 1LG series in IE2.
Another highlight: Some of the IE3 motors fit in the same housing as the IE2 motors. The efficiency classes naturally do not differ with regard to shaft height, so that the mechanical interface to the equipment unit remains the same. This also supports a largely problem-free efficiency upgrade to IE3 – without the need to adapt the mechanical design of a machine.
In severe duty applications, increased output motors can also be the right solution if sufficient space is not available for a standard motor. Because these motors offer the same output in the next smallest frame size.
This table lists the most important technical data. For more information and details, see Catalog D 81.1 • 2008 Section 0 "Introduction".
Type of motor
SIMOTICS GP/SD 1LE1/1PC1 IEC Low-Voltage Motors
Star connection/delta connection
Number of poles
2, 4, 6, 8
80 M ... 315 L
0.55 ... 200 kW (1LE1 motor series)/0.3 ... 9 kW (1PC1 motor series)
50 Hz and 60 Hz
Self-ventilated 1LE1 energy-saving motors with:
Self-ventilated 1LE1 motors with increased output and:
Forced-air cooled 1LE1 motors without external fan and fan cover with:
Naturally cooled 1PC1 motors without external fan and fan cover with:
IEC 60034-30 IE1, IE2, IE3: 2, 4 and 6-pole
Rated speed (synchronous speed)
750 ... 3000 rpm
9.9 ... 1546 Nm (1LE1 motor series)
Insulation of the stator winding
Temperature class 155 (F), utilized acc. to temperature class 130 (B) (also for motors with increased output)
Degree of protection
IP55 as standard
Admissible coolant temperature and site altitude
-20 ... +40 °C as standard, site altitude up to 1000 m above sea level.
50 Hz: 230 V, 400 V, 500 V, 690 V
Type of construction
Standard: color RAL 7030 stone gray
Vibration severity level
Level A (normal – without special vibration requirements)
See "Balance and vibration quantity" in Catalog D 81.1 • 2008 Section 0 "Introduction"
Balance type: half-key balancing as standard
See "Balance and vibration quantity" in Catalog D 81.1 • 2008 Section 0 "Introduction".
Sound pressure level
The sound pressure level is listed in the selection and ordering data for the required motor.
The weight is listed in the selection and ordering data for the required motor.
Modular mounting concept
Rotary pulse encoder, brake, separately driven fan or prepared for mountings.
Consistent series concept
See "Supplements to article numbers and special versions"
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