Product Description:

The 176F3501 belongs to the VLT PowerCards series produced by Danfoss. This component is a plug-in power card installed inside VLT drive stacks to manage high-power switching and signal routing between the rectifier, DC link, and inverter stages. In industrial automation, a dedicated card layout keeps the power section modular and supports compact integration inside large-frame drives. That arrangement supports controlled current transfer between stages while keeping the internal power path short. It also separates high-energy switching functions from nearby low-power control circuitry.

The card is rated for a mains window of 525-690 VAC, so the associated drive can connect directly to common 575 V or 690 V plant supplies without a step-down transformer. Its continuous throughput is 315 kW, which suits high-horsepower pump, fan, or compressor duty in heavy industrial systems. The printed circuit board has a ruggedized coating that helps resist conductive dust and vibration inside cabinets. The coating also helps limit surface leakage in contaminated environments. An overload class of NO means the drive current limit does not use a time-based inverse characteristic, so external protection settings must match the application.

The card has a net mass of 1.2 kg, which reduces mechanical loading on backplane connectors during handling and installation. Its volume is 14.267 cubic decimeters, allowing close packaging around bus bars and adjacent control boards in the enclosure. Identified by PCA type as a Power Card, the board includes gate drivers, snubbers, and monitoring points for the main inverter bridges. Those circuits support controlled switching and status observation within the drive. A serial EEPROM on the card stores electronic data used by the drive system, supporting recognition of the installed board during operation.