Grundfos EXTERNAL CUE IP21 frequency converters

External frequency converters

A series of CUE frequency converters for the speed control of many Grundfos pumps.

CUE Grundfos is the newest member of the range of electronic speed-regulating pumping systems. It is suitable for a multitude of applications such as industry, building maintenance, private or municipal water supply, wastewater and irrigation. This new series of wall-mounted frequency converters with Grundfos pump features and a special user interface offers functions similar to those of Grundfos electronic pumps, which are equipped with motors incorporating a frequency converter.

With the CUE solution, you can regulate the speed of virtually any Grundfos pump, regardless of size, power range and scope.

Applications

The CUE is a frequency converter for Grundfos pumps and provides a range of predefined functions that make it easy to use the converter in virtually any application area. A series of predefined regulatory modes, such as constant pressure, proportional pressure, constant level or constant throughput, makes it easy to set up a system in just a few steps. A special starter guide will guide you through the CUE configuration.  

The CUE has several entrances and exits

1 RS-485 GENIbus connection

1 analog input, 0-10 V, 0/4-20 mA: external set point 

1 analog input, 0/4-20 mA: sensor input 

1 analog output, 0-20 mA

4 digital entries: start/stop and 3 programmable entries

2 relays (C/NO/NC): programmable

Technical data and benefits

• Grundfos pump speed control
• Simple setup
• Predefined regulation modes
• Predefined sensor range
• Predefined pump family data
• Sharing the interface with the control equipment
• Additional features available
• Automatic adjustment of the direction of rotation
• 16 steps to get the system up and running

Characteristics