Pump and fan drive

ABB has announced a low-voltage AC drive, specifically targeted at pump and fan applications ranging from 0.37 to 22 kW. Built-in PID controllers are used to vary the drive’s performance in response to changes in pressure, flow or other external data, modifying the performance according to the needs of the application. This can eliminate the need for an external PLC and helps to save energy.

The drive is based on a robust hardware and software platform. It is resistant to supply voltage drops and sags, improving the reliability of the application. Flying start enables picking up a spinning load without waiting for it to stop. Full output current is available at up to 50 °C ambient temperature.

The drive has all the commonly needed functions for pump installations, such as PFC and soft pump and fan control functions for controlling pumps in parallel, supervision of inlet/outlet pressure conditions, soft start and stop (pipefill function) to reduce mechanical stress and water hammer effect, detection of underload and overload, and a pump cleaning sequence for prevention of pump jamming.

The drive is available from 0.37 to 11 kW for 200/240 V, three-phase supply; and from 0.37 to 22 kW for 380/480 V, three-phase supply. The enclosure class is IP20, with UL Type 1 (NEMA 1) kit available as an option. The interface has five digital and two analog inputs, accompanied by one digital and one analog output. The drive features a relay extension module that offers an extra three relay outputs, providing improved I/O interfaces. The drive also has embedded Modbus RTU with RS-232 and RS-485 connections.