Product Description:

The EFC3600-2K20-3P4-MDA-7P-NNNN is a frequency converter produced by Bosch Rexroth Indramat for the EFC Frequency Converters series. In automated plants, it is installed between the mains supply and an induction motor to vary output frequency and control shaft speed, torque, and reversing behavior without mechanical gear changes. The unit follows the Flex-Control concept, offering standard I/O so PLCs, operator panels, or stand-alone sensors can issue run, jog, or fault-reset commands directly to the drive.

The converter is designed for a supply of 400 V AC and accommodates line ranges from 380 V to 480 V with a tolerance of plus or minus 10 percent while maintaining stable output during voltage dips. In heavy-duty mode, it supports motors rated at 2.2 kW, which is the continuous shaft power the drive can deliver without derating at elevated ambient temperatures. Speed regulation uses enhanced V/Hz control, which preserves the V/f ratio across the frequency range to help maintain magnetic flux and improve low-speed torque compared with basic scalar control. Parameter access and local jogging are handled through a standard LCD display with a potentiometer, allowing on-panel frequency adjustment. Networked operation is implemented through Modbus, enabling remote register reads and writes for speed references, diagnostics, and trip resets over a two-wire RS-485 link.

The drive uses an IP20 housing for cabinet mounting where limited finger protection is required. For conducted emissions, the built-in filter meets industrial area, class C3 limits, making the unit suitable for installations on unrestricted low-voltage networks without supplementary line chokes. Hardware is packaged in Frame D, which provides the drilling pattern and heat-sink size used for this platform. Power is accepted through three-phase input power, and the standard control configuration means the digital inputs, relay outputs, and analog channels are preassigned so setup can center on motor data entry and acceleration profiling rather than hardware mapping.