Grundfos - CUE 3x380-500V IP54 250kW STO DC External Frequency Control Module - 500v - Three Phase - 250kW

The Grundfos CUE is a complete range of variable frequency drives for effective speed management of any Grundfos Pump without integrated drives. It is perfectly suited for Pump applications in the water or wastewater network, building services, or industrial Pumping solutions. CUE is an integral part of Grundfos iSOLUTIONS thus can be seen as a natural extension of the E-Pump range.

CUE delivers a series of pre-defined application management modes, including constant pressure, constant differential pressure, proportional differential pressure, constant temperature, constant level, constant flow rate, constant other values, open loop, sensorless constant differential pressure, and sensorless proportional differential pressure. The pre-defined management modes simplify programming the drive for the application. When controlled from an external source, the open loop management mode is used, supplying the CUE with information about the required speed.

CUE has pre-programmed data for different Grundfos Pump variants. During setup, the correct values are set for specific Pumps for optimum output and protection, easing setup and improving operation. A start-up guide allows simple setup by asking for a few parameters and then does all the settings. The next-gen HMI panel features a Favorites menu for a one-stop adjustment of setpoint, operating mode and management mode. A main menu with password protection is featured for next-gen setup and troubleshooting without additional tools. The HMI panel comes with an info key with detailed descriptions for simple settings and status and it enables the user to log data for optimizing the output of the Pump installation.

CUE runs with the most energy high-performing motor construction types for higher flexibility, and for the highest Pump installation performance. It can be paired with asynchronous induction motors, permanent magnet motors, synchronous reluctance motors and PM assisted SynRM. We offer several dU/dt and sine-wave motor filters for our CUE range to reduce the dU/dt and peak voltages to the motor windings and the acoustic noise generated in the motor. The input/output add-on board delivers additional input opportunities: one 0/4-20 mA analog input for an additional sensor, one 0-20 mA analog output and two inputs for Pt100/Pt1000 temperature sensors, for instance for bearing monitoring.

• Suitable for Industrial cleaning process, Industrial heating, Industrial cooling, Industrial water supply & transfer, Industrial wastewater treatment & reuse, Surface water intake, Drinking water treatment, Water distribution, Community water supply, Wastewater transport, Wastewater treatment
• Approvals include CE, CULUS, C-TICK

Grundfos (est. 1945) is a Danish pump manufacturer known for high-efficiency circulators, multistage boosters, borehole and wastewater pumps, plus packaged pressure systems. The range covers HVAC circulation, domestic hot water recirculation, pressure boosting, industrial water transfer and public water management, with strong focus on energy efficiency and intelligent controls.