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  • Frequency inverter | 7.5kW | 380-480V | 3F | IP20 | with filter | PROFINET | EtherNet/IP | 6SL3210-1KE21-7AF1 Siemens

    Code: 6SL3210-1KE21-7AF1

    SINAMICS G120C – a reliable, compact, and versatile frequency converter designed for controlling the speed and torque of 3-phase motors. It is ideally suited for industrial processes, engineering systems, or equipment automation where energy savings, precise control, and reliability are essential. The device combines easy integration with modern communication interfaces (PROFINET, EtherNet/IP), making it an efficient solution for electricians, system engineers, and maintenance specialists. 

  • Technical Specifications

    Input: 3-phase AC, 380–480 V ±10 %/−20 %, 47–63 Hz
    Output: 3-phase AC, 400 V IEC / 480 V NEC
    Rated power:
    • LO (Low Overload): 7.5 kW / 10 HP, 21.5 A
    • HO (High Overload): 5.5 kW / 7.5 HP, 18.2 A

    Maximum current: 25 A
    Output frequency:
    • For vector control: 0–240 Hz
    • For V/f control: 0–550 Hz

    Overload capacity:
    • LO: 150 % IL 3 s / 110 % IL 57 s
    • HO: 200 % IH 3 s / 150 % IH 57 s

    Efficiency: up to 97 %
    Noise level: 63 dB
    Communication: PROFINET, EtherNet/IP
    Inputs / outputs:
    • 6 digital inputs + 1 safe DI
    • 2 digital outputs (1 relay, 1 transistor)
    • 1 analog input (10-bit)
    • 1 analog output
    • Temperature sensor interface (PTC/KTY)

    Protection class: IP20
    Dimensions: 100 × 196 × 203 mm
    Weight: 2.3 kg
    Standards compliance: CE, UL, cUL, KC, EAC, C-Tick

    Functions

    Motor speed control – precise frequency and torque regulation.

    Various control modes: V/f, ECO, FCC, sensorless vector control.

    Integrated Class A filter – reduces electromagnetic interference.

    Protection functions: overvoltage, undervoltage, overheating, short circuit.

    Communication via PROFINET / EtherNet/IP – easy integration into automation systems.

    Compact design – saves space in cabinets.

    Efficiency up to 97 % – lower energy consumption.

    Applications

    For households or small users: suitable for small workshops or farms to control pumps, fans, compressors.

    For engineers: easy integration into manufacturing or building management systems due to PROFINET/EtherNet/IP and versatile control modes.

    For electricians: compact design, standard terminals, and easy installation on DIN rail or cabinet wall.

    In industry: used for conveyors, fans, pumps, mixers, drives, CNC machines.

    Pros

    Compact size – saves space in the cabinet.

    Wide selection of control modes (V/f, ECO, sensorless vector).

    High efficiency (up to 97 %) – lower energy consumption.

    Quiet operation (63 dB).

    Integrated communication interfaces (PROFINET, EtherNet/IP).

    High overload capacity – suitable for heavy loads.

    Versatile use in industry and smaller systems.

    Cons

    Protection class only IP20 – requires cabinet installation.

    More complex configuration requires technical knowledge.

    Maximum cable length limited (50 m shielded, 100 m unshielded). 

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.
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