Electric motor 1,1 kW, 1390 rpm, 400 V, 1AL-90S-4

Electric motor 1AL-90S-4 for lines where the drive runs regularly and without fluctuations

For machines that operate in a repeated cycle or run throughout the entire shift without longer breaks, predictable operation, simple wiring, and a solid mechanical base are decisive. Electric motor 1AL-90S-4 from the 1AL OPTIMAL series is designed exactly for such use. It is a three-phase asynchronous electric motor with an output of 1.1 kW, rated voltage of 230/400 V, connection Delta/Y, and rated speed of 1390 rpm at a frequency of 50 Hz. The four-pole design supports balanced power transfer in technologies where the drive must not behave erratically, whether during start-up or during longer operation.

This model is well suited to conveyors, packaging equipment, filling lines, mixing units, fan modules, pumping assemblies, labelling technologies, dosing mechanisms, sorting workplaces, feed systems, closing machines, and automated production cells. In such applications, it is important that the motor can be easily integrated into the working process, handles a regular cycle, and does not require unnecessarily large installation space.

What it brings in a real duty cycle

The output level of 1.1 kW is suitable where the drive already transmits a stable working load, yet a compact solution without excessive weight and dimensions is still expected. The rated current is 4.7 A at 230 V and 2.7 A at 400 V, which corresponds to common integration into industrial systems. Efficiency of 76.2 % and power factor of 0.77 give this motor a suitable basis for regular operation in machines that are repeatedly started or run for longer periods without shutdown.

Three figures are important during start-up. Starting torque ratio 2.3, pull-out torque ratio 2.3, and starting current ratio 6. In operation, this helps where the drive is expected to start confidently, engage predictably, and behave steadily during repeated starts. A load type with a parabolic or linear load characteristic broadens the range of use in conveyor systems, when working with flowing media, and in mechanisms where resistance changes according to the phase of the working movement. Also important is the rotor moment of inertia 0.0023 kg·m², which supports a good response in equipment with a regular working step, dosing, or short traverses.

Installation context and spatial solution

The 90 mm frame, that is an axis height of 90 mm, is suitable for machines where the drive already transmits a more noticeable load, but the design still requires sensible dimensions. During installation, the high compatibility of the 1AL OPTIMAL series is also important, as it supports quick commissioning and simple integration into various types of equipment. With this platform, versions IM B3, IM B35, IM B5, IM B14, IM B34 are available, which gives wider scope for fitting into both new and serviced technologies.

The mechanical design of the motor also has practical significance. Balancing with a half key is suitable when fitting pulleys, couplings, and other power transmission elements. The motor can rotate in either direction, so the motor can also be included in reversing mechanisms, bidirectional feeds, and units where the direction changes according to the process phase. For electrical connection, 2-M25X1.5 cable glands are prepared. During servicing and logistics, the packaging dimensions 355 × 210 × 270 mm and packaging weight 12 kg also help, making handling easier during storage, transport, and motor replacement.

Mechanical mounting without unnecessary compromises

On the DE and NDE sides, 6205-2Z bearings are fitted. Lubrication is provided by No. 2 lithium-based grease in the relevant temperature class. Such mounting supports smooth operation in everyday use and creates a reliable basis for the mechanical connection with other parts of the technology. A vibration velocity of 2.8 mm/s in class A help maintain calm machine operation and reduce the transmission of unwanted oscillations into the structure. Noise level of 61 dB(A) is favourable for a production environment where several devices operate side by side and running quality is also monitored.

Operating conditions the motor is ready for

In an industrial environment, power alone is not enough. Resistance to dust, heat, and everyday stress also matters. The electric motor 1AL-90S-4 has IP55 protection, which helps protect internal parts against dust and splashing water. This is important in packaging halls, material handling, conveyor nodes, and technologies where the equipment is cleaned regularly. IC411 cooling supports a stable thermal regime and the frame of the series is designed for efficient heat dissipation.

The motor uses insulation class F and temperature rise B. It is intended for ambient temperatures up to +65 °C and an altitude of up to 1000 m. The service factor 1.0 together with operating modes S1, S2, S3, S4-S9 allows deployment in continuous operation as well as in intermittent processes. For control, the motor is suitable for DOL, supports a frequency converter and a soft starter, so it can be adapted to both simple and more sensitive starting requirements. Where the drive is to work regularly, without complicated integration and with solid operational confidence, 1AL-90S-4 is the precise choice within the proven 1AL OPTIMAL series.