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Schneider Electric Altivar ATV18U18N4

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ATV18U18N4

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The ATV18U18N4 is a Variable Frequency Drive designed by Schneider Electric under the Altivar series, suited for three-phase applications. It accepts input voltages between 380 to 460 V AC and achieves a power rating of up to 1 HP (0.75 kW). This model excels in frequency control with an output frequency range spanning from 0.5 to 320 Hz.

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Technical specifications for ATV18U18N4

ManufacturerSchneider Electric
Product LineAltivar
Part NumberATV18U18N4
Weight5.00 lbs (2.27 kg)
Product NameVFD (Variable Frequency Drive)
PhaseThree-phase
Input Voltage380–460 V AC, 3-phase
Nominal Power RatingUp to 1 HP (0.75 kW)
Output Frequency Range0.5 to 320 Hz
Output Phases3-phase
Maximum Transient Current150% of nominal current for 60 seconds
Braking Torque30% without dynamic braking; up to 150% with optional dynamic braking resistor
Frequency ResolutionDisplay: 0.1 Hz; Analog Inputs: 0.1 Hz for up to 100 Hz
Adjustable Switching Frequency2.2 to 12 kHz
Drive ProtectionGalvanic isolation; protection against short circuits, thermal overload, undervoltage, overvoltage, and over-braking
Motor ProtectionIntegrated thermal protection via I²t calculation
Operating Temperature Range0°C to 45°C
Storage Temperature Range-20°C to 60°C
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The Schneider Electric ATV18U18N4 Variable Frequency Drive (VFD) is engineered for use in three-phase systems, operating efficiently at an input voltage range of 380 to 460 V AC. Capable of delivering a nominal power of 1 HP (0.75 kW), this drive is adept at managing an output frequency spectrum from 0.5 to 320 Hz, making it versatile for various applications.

Designed to handle transient currents, the ATV18U18N4 has a maximum transient current capacity that reaches 150% of the nominal current rating over a short duration of 60 seconds. For braking capabilities, it allows a braking torque of 30% in standard mode, which can rise to as much as 150% when paired with a dynamic braking resistor. The frequency resolution is well-defined, at 0.1 Hz for both the display and the analog inputs up to 100 Hz, facilitating precise control.

Additionally, the drive's switching frequency can be adjusted anywhere from 2.2 to 12 kHz, supporting different operational needs. Protection features include galvanic isolation, as well as comprehensive safeguards against common electrical issues such as short circuits, thermal overloads, undervoltage, overvoltage, and over-braking, thereby extending the life of the drive and the attached motor. It also integrates thermal protection through I²t calculations to further shield the motor.

For environmental compatibility, the unit operates smoothly within a temperature range of 0°C to 45°C and can be stored in temperatures from -20°C to 60°C. Its physical dimensions are approximately 4.41 inches wide, 7.17 inches high, and 4.76 inches deep (112 mm x 182 mm x 121 mm), allowing for compact installation in various settings.