Product Description:

The 136L5156 is a variable frequency drive manufactured by Danfoss for the VLT FC 302 Automation Drives series. Within an automation cell, it converts fixed-frequency utility power into a regulated output waveform that lets induction and permanent-magnet motors run at commanded speeds and torques. By replacing mechanical throttles with electronic control, the unit improves energy efficiency and supports programmable acceleration profiles for conveyors, pump skids, and packaging axes that require repeatable motion. Designed for integration in machine panels, it provides parameter access through removable option slots and a front keypad, making it a versatile actuator element in distributed control architectures.

Incoming supply can range from 380 - 500 VAC, so the inverter matches common industrial switchgear. Because the input is three-phase power, motor current remains balanced and torque pulsation stays low. The enclosure carries an IP20 / Chassis rating, which permits finger-safe service but requires placement inside a ventilated panel. An integrated RFI Filter attenuates conducted noise, helping the installation satisfy EMC limits alongside sensitive sensors. Setup and fault tracing are handled through the front-mounted Graphical Local Control Panel, which presents plain-text parameters, trend graphs, and reset functions.

The control layer can be extended by the PROFINET MCA 120 option card, enabling deterministic Ethernet commands from higher-level PLCs. Closed-loop vector operation is supported through the MCB-103 Resolver Option, which accepts resolver feedback to improve speed regulation during low-rpm loads. For harsher atmospheres, the printed circuit boards are coated, limiting moisture absorption and metallic whisker growth. This protection helps the drive remain suitable for panel installations where airborne contaminants or humidity could affect unprotected electronics over time.