Grundfos CUE Series Product Guide

Contents
Grundfos CUE
2
Introduction
Grundfos CUE ................................................................4
Features and benefits
User interface .................................................................6
Functions ........................................................................6
Inputs and outputs ..........................................................6
Accessories ....................................................................7
Applications
Overview applications.....................................................8
Identification
Nameplate ......................................................................9
Product range
Overview.......................................................................10
Functions
Overview.......................................................................11
Operating modes ..........................................................13
Control modes ..............................................................14
Setpoints.......................................................................17
Setting the direction of rotation.....................................20
Status functions ............................................................20
Logging functions..........................................................20
PID controller ................................................................21
Stop functions...............................................................22
Dry-running protection ..................................................23
Duty/standby.................................................................23
Operating range............................................................24
Motor bearing monitoring..............................................24
Standstill heating ..........................................................24
Ramps ..........................................................................25
Proportional differential pressure, parabolic .................25
Hmax update ................................................................26
Differential pressure from two sensors .........................26
Start delay after power-up.............................................26
Auto/manual restart after alarm ....................................26
Limit exceeded..............................................................27
Digital inputs .................................................................27
Signal relays .................................................................28
Analog inputs................................................................28
Analog output................................................................28
MCB 114 sensor input module......................................29
GENIbus .......................................................................29
Copy of setting..............................................................30
Pipe fill (PC Tool)..........................................................30
Installation
Mechanical installation ................................................. 31
Electrical installation..................................................... 32
RFI filters...................................................................... 34
Output filters................................................................. 34
EMC-correct installation ............................................... 35
Operation
Control panel ................................................................ 37
Start-up guide............................................................... 37
Warning and alarm list.................................................. 38
CUE selection
How to select a CUE .................................................... 39
Special conditions......................................................... 40
Selection tables............................................................ 41
Technical data
Main dimensions and weight ........................................ 42
Surroundings ................................................................ 47
Sound pressure level.................................................... 47
Terminal tightening torques.......................................... 47
Cables .......................................................................... 47
Fuses............................................................................ 48
Inputs and outputs........................................................ 51
Accessories
Product numbers.......................................................... 52
MCB 114 sensor input module ..................................... 53
Grundfos Local Control Panel, GLCP........................... 54
Remote-mounting option for GLCP .............................. 54
Floor-mounting option................................................... 55
IP21/NEMA1 kit ............................................................ 55
Output filters................................................................. 56
Grundfos differential pressure sensor, DPI .................. 59
Further product documentation
WebCAPS .................................................................... 59
WinCAPS...................................................................... 60

Grundfos CUE Series Specifications

General

Category	DC Drives
Output Voltage	24 V DC
Control Signal	0-10 V, 4-20 mA
Communication	Modbus RTU
Protection Features	Overvoltage, overcurrent, overtemperature, short circuit
Humidity	5% to 95% (non-condensing)
Enclosure class	IP20
Enclosure Rating	IP20