Product Description:

The EFC3600-0K40-3P4-MDA-7P-NNNN frequency converter is produced by Bosch Rexroth Indramat within the EFC Frequency Converters series. Designed as a variable-speed drive for induction and synchronous motors, it allows precise adjustment of shaft speed to match process requirements in industrial automation. By converting fixed mains frequency to a controlled three-phase output, the unit supports energy savings and smoother machine operation in pumping, conveying, and material-handling applications.

It operates from a nominal mains supply of 400 V, with a permissible input range of 380 to 480 V and a tolerance of +10%/-15%, so one model can be used across a range of plant power systems. Torque production is controlled through Enhanced V/Hz control, a scalar method that maintains a constant volts-per-hertz ratio for stable magnetization under varying loads. The control section uses the standard configuration and runs on the Flex-Control platform with standard I/O, which supports straightforward connection to external sensors or contactors. For heavy-duty operation, the drive supports 0.4 kW motor power, and a built-in EMC filter rated for industrial areas, Class C3 limits conducted emissions on longer cable runs. The enclosure has an IP20 rating, so the device is intended for installation inside a closed panel.

Communication is handled through the native Modbus interface, allowing parameter access from PLCs without extra gateways. Power conductors connect to three-phase power, which supports balanced current draw and reduced harmonic stress on the supply. Local operation is handled through a standard LCD display with a potentiometer, giving direct speed adjustment and menu navigation without external tools. The inverter uses Frame Size B, which keeps the enclosure compact while leaving room on DIN rails for line fuses and contactors.