Product Description:

The 131X6116 is an AC variable-frequency drive manufactured by Danfoss for the FC 111 Flow Drives series. Designed for centrifugal pumps, blowers, and other flow-regulated loads, the unit adjusts motor speed so that process output matches real-time demand instead of remaining tied to the fixed line frequency. Electronic control of the pump curve can reduce energy consumption by avoiding unnecessary motor operation at full speed. Controlled acceleration and deceleration can also minimize hydraulic shock in automated fluid-handling systems. These capabilities make the drive suitable for building services, water systems, ventilation equipment, and light industrial processes that require variable flow.

The drive delivers a continuous motor output of 3 kW, making it suitable for small and midsize induction motors commonly found in building services and industrial skids. It accepts a three-phase supply of 3 x 380–480 V AC, allowing direct connection to common low-voltage distribution networks without a transformer. The housing has an IP20 rating with a backplate, which supports cabinet mounting in clean indoor environments while providing basic protection against accidental finger contact. Its circuit boards have a reinforced coating that protects conductive paths from airborne moisture and chemical vapors encountered near cooling towers or chemical dosing equipment. The drive includes no brake unit, so applications that require rapid stopping may need external equipment to manage regenerative energy. Cabinet placement should provide suitable ventilation and prevent direct exposure to water, dust buildup, or conductive contamination.

The product is supplied with no local control panel, so parameter entry requires a compatible remote connection or a temporarily attached control panel. This configuration is useful when routine operation is managed from a centralized control system and local keypad access is unnecessary. As part of the VLT Flow Drives product group, the unit supports proportional-integral flow control for maintaining process variables such as pressure or flow. Sleep mode can stop the motor when demand falls below an established threshold, reducing unnecessary operation during low-use periods. Application macros simplify configuration for common pump and blower arrangements by grouping related control settings. The consistent control structure also helps users familiar with related VLT products navigate operating parameters and diagnostic information.