Gearless machines for elevator
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ITG 01
ITG 02
ITG 03
ITG 04
ITG 05
ITG 06
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The "inset" PM motor design retaining the advantages of the SMPM design
As the standard Surface Mounted PM machines (SMPM), the inset PM machines have permanent magnets mounted on the rotor surface, but the gaps between the permanent magnets are however partially filled with steel. The steel between the permanent magnets creates a saliency and gives a reluctance torque in addition to the torque from the magnets. The reluctance torque of the inset PM motor design contributes around 5 % to the required nominal torque. This allows a lighter stator, and determines the reason why the inset PM motor can be lighter than the SMPM motor. This notwithstanding, the inset PM motors can have other potential weaks if the dimension of the steel between the magnets is not properly designed accordinlgy also to the poles number, and for this reason, at ITG we do this by using sophisticated FEM methods, with the goal to retain the advantages of both the SMPM and inset motors design.
Finally, the magnets of the ITG gearless machines are not only glued to the rotors, but they are also mechanically fixed to them, so to make sure that they will never detach, under no circumstances.
The high number of poles
Despite the number of permanent magnets and the production cost increase with a higher pole number, and therefore it is normally found a compromise between the weight and the number of magnets, the technical configuration of the ITG gearless machines is always based on the 24 or 32 pole design, since the higher the pole number, the lower the torque ripple, because the torque ripple varies between different configurations and pole numbers.
In order to further decrease the torque ripple (which can also jeopardise the working lifetime of the motor) the ITG gearless machines are all designed with skewing, which is an additional way to decrease the torque ripple.
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Gearless machine for elevator ITG 01
The ITG 01 is a versatile range of gearless hoisting machines designed for payloads included between 320 and 550 Kg, with specific versions designed for 1:1 and 2:1 roping.
Equipped with traction sheaves having the diameter of 200, 210, 240 and 320mm, the ITG 01 variants are available for speeds varying from 0,5 up to 2 metres per second.
Accordingly to the specific variants, the static load of the ITG 01 range is included from 1.750 kg. up to 1950 kg in all directions in 1:1 roping, and therefore up to 3.900 Kg in 2:1 roping.
Thanks to the SmCo magnets, the ITG 01 range or products produces the best performance also with high working temperatures, and its magnets are not prone to oxidate over the time and loose performance.
The 24 pole permanent magnet motor assures the best possible performance and the most compact dimensions.
The widht of the ITG 01 is reduced down to 271 millimetres. This allows to have a larger cabin within a standard shaft, which means for a load of 550 rather than the standard 480 Kg.
The reduced dimensions of the ITG 01 facilitate the easier installation of the machine
Package with inverter
ITG Customers may avail themselves of the "ITG Configuration Wizard" software which allows to upload the complete data of the elevator system and provides a selection of the suitable gearless ITG machines. It also provides the comparison between the machine nameplate data and actual values provided in the lift system, in addition to the calculations relating to the safety and traction of the ropes, the space for emergency braking and the operating cost for electricity and the efficiency class
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Elevator gearless machine
ITG 02: a cashbox of versatile solutions
Equipped with traction sheaves having the diameter of 200, 210, 240 and 320mm, the ITG 02 variants are available for speeds varying from 0,5 up to 2 metres per second.
Accordingly to the specific variants, the static load of the ITG 02 range is included from 1.750 kg. up to 1.950 kg in all directions.
The "Curén" ventilated versions allow you to combine the smallest dimensions with the highest efficiency.
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Gearless hoisting machine
ITG 03
Equipped with traction sheaves having the diameter of 200, 240, 320 and 400 mm, the ITG 03 variants are available for speeds varying from 0,5 up to 2,0 metres per second.
The static load of the ITG 03 is of 3.500 kg. in all directions.
Thanks to the SmCo magnets, the ITG 03 range or products produces the best performance also with high working temperatures, and its magnets are not prone to rust over the time.
The 32 pole motor assures the best possible performance with the most compact dimensions, and the width of the ITG 03 is only 320mm.
The "Curén" ventilated versions allow you to combine the smallest dimensions with the highest efficiency.
Gearless hoisting machine
ITG 04
Equipped with traction sheaves having the diameter up to 500 mm, the ITG 04 variants are available for speeds varying from 0,5 up to 2,0 metres per second.
The static load of the ITG 04 is of 3.500 kg. in all directions.
The 32 and 34 pole PM motor assures the best possible performance with the most compact dimensions, and the width of the ITG 04 is only 320mm.
The "Curén" ventilated versions allow you to combine the smallest dimensions with the highest efficiency.
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Efficient cooling
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Gearless hoisting machine ITG 05
The static load of the ITG 05 is of 3.200 kg. in all directions.
Thanks to the SmCo magnets, the ITG 05 range or products produces the best performance also with high working temperatures, and its magnets are not prone to rust over the time.
The 32 pole motor assures the best possible performance with the most compact dimensions, and the width of the ITG 05 is only 320mm.
The "Curén" ventilated versions allow you to combine the smallest dimensions with the highest efficiency.
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Gearless hoisting machine ITG 06
TECHNOLOGY AS ITS BEST
- 32-pole motor, ensuring the least possible torque ripple and the greatest fluidity of operation;
- small dimension footprint, allowing the best use of the space of the lift shaft and facilitating installation;
- design for heavy duty cycle to prevent magnets from reaching maximum working temperature (*);
- high static load, providing maximum flexibility of use and the highest safety level;
- particularly reduced starting and nominal currents, favoring the effective energy efficiency and lower operating temperature, for obtaining the higher reliability, over time, of all the components of the
traction unit;
- Design favouring natural heat dissipation.The included table shows only some of the possible applications of the new gearless hoisting machine ITG 06, since its multiple variants allow to develophundreds of possible installation alternatives.(*) = N-type Neodymium magnets permanently lose part of their magnetization at atemperature above 80°C
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