Product Description:

The 131B0006 is an AC variable frequency drive manufactured by Danfoss for the VLT FC 302 Automation Drives series. By rectifying and then inverting the incoming mains power, the unit supplies a variable-frequency output that allows a control system to adjust motor speed according to process demand. This electronic regulation supports conveyors, pumps, and fans that require precise speed adjustment across changing operating conditions. Controlled acceleration and deceleration can also reduce mechanical stress on belts, couplings, bearings, and other driven components. The drive provides a practical method of improving energy use when a motor does not need to operate continuously at full speed.

The drive has a rated power of 4.0 kW, indicating the continuous electrical load that the inverter can supply to a connected motor. Its input bridge accepts a mains range of 380–500 VAC, covering common industrial supplies without requiring transformer tap changes. The unit operates with three-phase power and connects directly to compatible industrial feeders. Its IP20 chassis provides protection against accidental contact with internal electrical parts when the drive is properly installed in a switchgear cabinet. The open chassis design permits heat to dissipate through the surrounding cabinet air, so adequate clearance and ventilation must be maintained around the enclosure. Supply conductors, motor leads, and control wiring should be routed according to the applicable installation requirements to preserve reliable operation and limit electrical interference.

An integrated brake chopper routes regenerative energy to an external resistor, helping prevent DC-link overvoltage during rapid deceleration or operation with overhauling loads. Electromagnetic compatibility is supported by an internal RFI Class A1/B (C1) filter, which attenuates conducted emissions on the supply side. The filter supports installations that must control interference transferred from the drive to connected power circuits. A normal cabinet mounting arrangement simplifies mechanical installation for compatible A, B, and C frames by using established panel mounting patterns. The drive has uncoated control boards, so it should be installed in a clean, dry enclosure with protection from condensation, corrosive vapors, and conductive dust. Proper cabinet airflow helps remove operating heat while shielding the electronics from contaminants that could impair insulation or electrical connections.