Product Description:

The 131G2131 is an AC variable frequency drive produced by Danfoss for the VLT FC 302 Automation Drives series. Classified under the VLT AutomationDrive FC product group, it carries the internal series identifier 302. The unit converts fixed-frequency utility power into a variable output waveform so that induction motors can be accelerated, decelerated, or held at any setpoint required by conveyors, pumps, or fan systems. Its design targets cabinet integration in automated machinery where precise speed regulation is preferred over mechanical throttling. This approach allows motor speed to follow changing process demands without requiring mechanical speed-control components.

The drive delivers a continuous output of 11 kW, equivalent to 15 HP, which is the maximum motor shaft power it can sustain under rated thermal conditions. Incoming power is accepted at 380 to 500 VAC, and the power section uses three-phase power, eliminating the need for phase conversion in typical industrial plants. A built-in DC-link brake chopper allows excess regenerative energy to be dissipated through an external resistor, protecting the bus during fast deceleration cycles. Installation uses a normal cabinet mount for A, B, and C frames, and wiring is routed through standard cable entries. Because no dedicated mains module is installed, line isolation and circuit protection must be provided externally. Adequate clearances around the enclosure support access to terminals and help cabinet airflow remove heat from the power electronics.

The chassis provides IP20 chassis protection, which is suitable for indoor enclosures where the cabinet supplies adequate airflow and prevents direct exposure to contaminants. Feedback-ready operation is enabled by the MCB-102 Encoder Option, allowing the drive to receive motor position or speed information for closed-loop control. A factory-installed RFI filter limits conducted electromagnetic emissions on the supply conductors. Local interaction occurs through a numerical local control panel that displays operating data and allows parameter changes without a computer. The circuit boards are uncoated, so ambient humidity and airborne contamination must remain within the drive’s permitted operating limits. Proper enclosure ventilation also helps maintain acceptable internal temperatures during continuous operation at the rated output.