FC302-102 Danfoss
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The Danfoss FC302-102 is an automation drive from the VLT FC 302 Automation Drives series with a maximum output frequency of 590 Hz and a maximum flux frequency of 300 Hz. It features 2 analog inputs with 10-bit resolution, 1 analog output with 12-bit resolution, and supports 2 relay outputs. The drive allows for a maximum digital input voltage of 28 V DC, 2 digital outputs rated at 40 mA, and can scan inputs at 1 ms intervals.
Internal Product Review
The FC302-102 is a Danfoss VLT FC 302 automation drive with a 1 ms scan interval and a 590 Hz maximum output frequency. Two analog inputs with 10-bit resolution support clean signal processing in demanding automation loops. A 110 kHz pulse input is a strong advantage for precise high-speed control.
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Product Description:
The FC302-102 is an AC variable-frequency drive produced by Danfoss for the VLT FC 302 Automation Drives series. It converts fixed-frequency three-phase mains into a modulated output that lets control systems vary the speed of induction motors used in conveyors, pumps, and general machine automation. By regulating motor voltage and frequency, the unit supports precise process control and energy savings in industrial plants where variable-torque and constant-torque loads are present.
The control platform integrates 2 analog inputs that accept ±10 V or 0–20 mA signals, allowing speed reference or process feedback to be wired directly to the drive. Each input is digitized at 10-bit resolution, giving 1,024 discrete steps for fine adjustment of set points. Command generation is complemented by 1 analog output that can retransmit motor speed, load, or other internal parameters to external indicators or PLC analog modules. Two digital outputs are also included, and each sink/source transistor can deliver up to 40 mA to drive external relays or signal lamps without an interposing interface. These I/O resources are scanned every 1 ms so that parameter changes propagate quickly through the regulation loop.
The motor section can generate carrier-based output frequencies up to 590 Hz for high-speed spindles, while the vector-control algorithm maintains full flux control to 300 Hz. A dedicated pulse input accepts encoder or tachometer feedback at rates as high as 110 kHz, supporting advanced positioning or slip compensation functions. Internal processing of status words, references, and I/O states occurs on a fixed cycle of 1 ms, which minimizes latency between field signals and PWM updates. For noisy industrial environments, the manufacturer specifies a maximum motor-end cable length of 150 m when shielded; unshielded runs may extend to 300 m when emission limits permit.
