Siemens 6SE6440-2UD31-1CA1

Brand: Siemens
Model: 6SE6440-2UD31-1CA1

Inventory situation: Goods are available in stock.

A dependable inverter from the MICROMASTER 440 series, the Siemens 6SE6440-2UD31-1CA1 is made to precisely control industrial motors. This inverter operates on three-phase AC power and can handle frequencies between 47 Hz and 63 Hz and voltages between 380 V and 480 V (with a tolerance of ±10%). It provides two power options for various loads: 11 kW for applications requiring constant torque (such as mixers or conveyors) with an output current of 26 A, and 15 kW for loads requiring variable torque (such as fans or pumps) with an output of 32 A. It can also withstand brief overloads, such as 150% of the rated current for 60 seconds or 200% for three seconds, which makes it difficult to use in hectic industrial environments.

The Siemens 6SE6440-2UD31-1CA1 has a flexible control system. It matches various load types using V/f control (with linear, square, or programmable curves). Additionally, it has sensorless vector control, which is excellent for machines that require constant power because it can deliver strong torque even at low speeds (up to 150% of rated torque at 0 Hz). For example, a built-in PID controller keeps a pump system's pressure constant.

The Siemens 6SE6440-2UD31-1CA1 can communicate with other devices at up to 115.2 kbps thanks to its RS485 interface, which supports Modbus RTU. You can add modules to connect to PROFIBUS DP or PROFINET for more complex configurations. Six digital inputs, two analog inputs (0-10V or 0-20mA), three relay outputs, and two analog outputs are among its many inputs and outputs. These can be easily configured for start/stop signals, speed changes, or status monitoring.

First, in conveyor systems-think of factories moving boxes, parts, or raw materials. Conveyors require constant speed control to prevent obstructions or product damage. Here, the Siemens 6SE6440-2UD31-1CA1 shines because its sensorless vector control maintains the belt's smooth motion even at low speeds by delivering constant torque. It swiftly adapts to changing loads, avoiding abrupt stops, whether they are lighter or heavier (like a stack of boxes). Because of this, it is a popular option for assembly lines in warehouses, electronics plants, and auto factories.

Next are fans and pumps in buildings or industrial facilities. A fan blowing faster to cool a hot room is an example of how these machines frequently operate on "variable torque," where their power requirements vary with speed. For such loads, the Siemens 6SE6440-2UD31-1CA1 manages 15 kW, perfectly matching the requirements of the fan or pump. Its integrated PID controller is also very helpful; it can automatically adjust fan speed to maintain a certain temperature in a workshop or maintain constant water pressure in a factory's plumbing. Because the motor doesn't have to run constantly at maximum power, energy is saved.

Equipment for mixing and stirring is also advantageous in chemical, pharmaceutical, and food processing labs. To blend ingredients evenly, mixers require precise speed control; if you go too fast, you risk splashing liquids; if you go too slowly, mixtures won't combine correctly. Operators can set precise speeds with the Siemens 6SE6440-2UD31-1CA1's V/f control with programmable curves. Additionally, its overload protection (150% for 60 seconds) guards against damage by handling situations where thick mixtures force the motor to work harder.

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