Product Description:

The FC 302 is an AC variable-frequency drive produced by Danfoss for the VLT FC 302 Automation Drives series. By converting fixed-frequency, three-phase mains power into a synthesized output, it allows automation systems to regulate induction or permanent-magnet motor speed according to real-time load demands. The drive serves as a central actuator in conveyors, pumps, and general process equipment where electronic speed control can reduce energy consumption. It also supports precise PLC-based positioning in automated machinery that requires controlled acceleration, deceleration, and continuous speed adjustment.

The drive accepts 50/60 Hz ±5% line power and tolerates a phase imbalance of 3.0%. When operating at nominal load, it maintains a displacement power factor greater than 0.98 and a true power factor of at least 0.9, limiting reactive current in the supply. Two analog input channels with 10-bit resolution plus sign receive speed or torque references, and the associated input circuitry withstands up to 28 V DC. Pulse-train coordination is supported at input rates up to 110 kHz, while feedback can be transmitted at 32 kHz. The inverter can generate output frequencies as high as 590 Hz. A dedicated flux mode holds the magnetizing current constant at 300 Hz to improve motor efficiency under light loads.

The unit delivers full current at ambient temperatures up to 45 °C and can operate at altitudes reaching 1000 m without derating. Two relay outputs provide dry contacts for external interlocks or alarms, allowing the drive to communicate operating states to connected control circuits. Motor leads may extend up to 150 m when shielded or 300 m when unshielded, providing flexibility when the motor and drive cabinet must be installed some distance apart. The available cable lengths support varied equipment layouts while allowing the converter to maintain controlled motor operation within the stated installation limits.