FC302-FC202 Danfoss
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The Danfoss FC302-FC202 is part of the VLT FC 302 Automation Drives series, supporting two analog inputs with 10-bit resolution and a maximum input current of 30 mA. It offers two digital outputs with a maximum current of 40 mA, as well as two relay outputs. The drive has an open-loop speed accuracy of ±8 RPM and a system response time of 2 milliseconds or less.
Internal Product Review
The FC302-FC202 is a Danfoss VLT FC 302 automation drive with open-loop speed accuracy of ±18 RPM and system response time of ≤2 ms. Control integration looks strong from a technical standpoint, with 2 analog inputs and 2 relay outputs supporting flexible machine interfacing. A well-balanced drive for automation applications where fast response and dependable control matter most.
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Product Description:
The FC302-FC202 is an AC variable frequency drive manufactured by Danfoss for the VLT FC 302 Automation Drives series. As a member of the VLT AutomationDrive FC product group, the unit converts fixed-frequency three-phase power into a modulated output that lets controllers match motor speed to real-time process demands. It is deployed in conveyors, pumps, and ventilation systems where adjustable speed improves energy consumption, lowers mechanical stress, and maintains accurate flow or pressure in automated installations.
The control terminal block supplies a reference of 10.5 V ±0.5 V that powers external potentiometers, while a 24 V auxiliary rail can source up to 200 mA for sensors and small relays. Two differential analog inputs accept ±10 V or 0–20 mA signals; the conversion provides 10-bit resolution plus a sign bit, and absolute accuracy is held within 0.5% FS. Each channel draws no more than 30 mA, preventing excessive loading of sensitive transmitters. The analog output can drive feedback devices with impedances as low as 500 Ω. Digital command lines tolerate up to 28 V DC; the interface provides two selectable transistor outputs, each rated for 40 mA, allowing status indication or interlocking without external buffers. These electrical limits govern the drive’s interaction with PLC I/O cards and field instruments.
For high-speed positioning tasks, the pulse input can count edges up to 110 kHz, and two form-C relay outputs provide galvanic isolation for contactors or alarms. The safe torque-off circuitry presents only 400 nF of input capacitance, allowing safety modules to react quickly. The drive maintains open-loop speed accuracy within ±8 rpm, and its internal control loops settle in ≤2 ms, supporting precise tension or flow regulation. Motor terminals accommodate shielded cable runs up to 150 m without added output filters, simplifying cabinet placement relative to the load.
