134F2975 by Danfoss

The 134F2975 is a variable frequency drive produced by Danfoss for the VLT FC 360 Automation Drives series. This chassis-mounted unit conditions three-phase power and supplies an induction motor with controlled output frequency so the system can regulate shaft speed, improve process accuracy, and reduce energy use on automated lines. It fits inside electrical panels and interfaces with PLCs through the standard control card. That arrangement makes it suitable for compact machine installations that need motor control without a separate external interface module.

The drive provides a nominal output of 2.2 kW, which corresponds to 3.0 HP. Its input supply range of 380-480 VAC in three-phase service matches common industrial mains. The converter section is rated for High Overload duty, so it can handle short-term current peaks during acceleration or changing load conditions. The enclosure has an IP20 rating, which means the unit is finger-safe but should still be installed inside a cabinet to limit exposure to dust and moisture. The standard control card supports analog and digital I/O for speed reference, status feedback, and basic system integration.

Electromagnetic compliance is supported by the integrated RFI Class A2 filter, which reduces conducted noise on the supply lines. For dynamic stopping, the internal brake chopper can divert regenerative energy to an external resistor and help prevent DC-link overvoltage during rapid deceleration. Reliability in harsh airflow conditions is improved by the coated PCB, which helps protect sensitive circuit traces from contaminants. When several inverters operate on a shared bus, the factory-enabled load sharing mains option helps balance inrush current and stabilize the common DC voltage. Standard cable entries and the lack of a local display keep the front of the unit simple for cabinet installation.