Grundfos CUE Series User manual

GRUNDFOS PRODUCT GUIDE
Grundfos CUE
Frequency converters for pump control
60 Hz

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
3
Mission
— to successfully develop, produce and sell high-quality pumps and
pumping systems worldwide, contributing to a better quality of life and
a healthy environment
• One of the 3 largest pump companies in the world
• The second largest manufacturer of submersible motors in the world
• World headquarters in Denmark
• North American headquarters in Kansas City - Manufacturing in Fresno, California
• 72 companies in 41 countries
• More than 10 million motors and pumps produced annually worldwide
• North American companies operating in USA, Canada and Mexico
• Continuous reinvestment in growth and development enables the company to
BE responsible, THINK ahead, and INNOVATE
Bjerringbro, Denmark
Fresno, California Olathe, Kansas
Monterrey, Mexico Allentown, Pennsylvania Oakville, Ontario

Grundfos CUE
4
.75-300 HP
1-60 HP
Introduction
Grundfos CUE
The CUE is a series of frequency converters designed
for speed control of a wide range of Grundfos pumps.
Fig. 1 Grundfos CUE solution
Built-in E-pump functionality
The CUE solution contains the same control functionality as the Grundfos E-pumps and is thus a supplement to the
E-pump range. See the table below.
GrA4409
POWER SUPPLY
3 x 525-690V
3 x 525-600V
3 x 380-500V
3 x 200-240V
1 x 200-240V
0.25 1 3 10 30 90 300 HP
0.5-1.5 HP 1.5-10 HP
0.5-7.5 HP
0.75-30 HP
1-10 HP
10-300 HP
E-PUMPS
CUE
* Power supply only up to 480 V
**Power supply only 208 to 230 V
All CUE Solutions are available in two enclosure classes: IP21 (NEMA 1) or IP55 (Nema 12).

Introduction Grundfos CUE
5
Designed for Grundfos pumps
The CUE can be used in both new and existing instal-
lations, but the pump and motor should be suitable for
use with frequency converters.
The table below shows which Grundfos pump types the
CUE is designed for.
Further technical documentation
• Installation and operating instructions contain all in-
formation for putting the CUE into operation.
• Installation and operating instructions of the MCB
114 sensor input module contain all information for
installation of the MCB 114.
Technical documentation is available on www.grund-
fos.com > International website > WebCAPS.
If you have any questions, please contact the nearest
Grundfos company or service workshop.
Pump type
AFG
AMD
AMG
BM, BMB, BMP
BME, BMET, BMEX
CH, CHI, CHN, CHV
CHIU
Contra
CPH, CPV
CR, CRI, CRN, CRT
CRK
CV
DP, EF
durietta
Euro HYGIA
F&B HYGIA
HS
LC, LF
MAXA, MAXANA
MTA, MTH, MTR
MTB
NB, NK
NBG, NKG
S
SE, SEN, SEV
SP,SP-G, SP-NE
SPK
SRP
TP
VL

Grundfos CUE
6
Features and benefits
User interface
The user interface offers these possibilities:
• Local operation via a control panel with graphic dis-
play where the menu structure is based on the well-
known system from Grundfos E-pumps.
• Remote operation via external signals, for instance
via digital inputs or GENIbus.
• Monitoring of operating status via indicator lights
and signal relays.
• Display of alarm or warning and logging of the last
five alarms and warnings.
Functions
Control modes for centrifugal pumps
The CUE has a wide range of pump-specific functions:
• Open loop:
The speed is kept at a set value in the range of min.
and max. speed.
• Proportional differential pressure:
The differential pressure is reduced at a falling flow
rate and increased at a rising flow rate.
• Constant differential pressure:
The differential pressure is kept constant, independ-
ently of the flow rate.
• Constant pressure:
The pressure is kept constant, independently of the
flow rate.
• Constant level:
The liquid level is kept constant, independently of
the flow rate.
• Constant flow rate:
The flow rate is kept constant, independently of the
head.
• Constant temperature:
The liquid temperature is kept constant, independ-
ently of the flow rate.
• Constant other value:
Any other value is kept constant.
Start-up guide
The CUE has a start-up guide, which begins at the first
start-up. Here a number of parameters are set automat-
ically on basis of the pump type. Other parameters are
set manually on basis of the data on the motor and
pump nameplates.
Thanks to the start-up guide, the installer can quickly
set central parameters and put the CUE into operation.
Direction of rotation test
During the start-up guide, the CUE automatically tests
and sets the correct direction of rotation without chang-
ing the cable connections. This feature is activated only
if a pressure or flow sensor is installed.
Duty/standby
The duty/standby function is used to alternate between
two pumps. Each pump is connected to a CUE unit. The
primary task is to start the standby pump if the duty
pump is stopped due to an alarm and to alternate the
two pumps at least every 24 hours.
Duty/standby operation increasesthesecurityof supply
and ensures even use between the two pumps.
Dry-running protection
To protect the pump, select the dry-running function
together with an external sensor so that lack of inlet
pressure or water shortage can be detected.
Low-flow stop function
In control mode constant pressure or constant level, the
stop function is used for changing between on/off oper-
ation at low or no flow and continuous operation at high
flow rate.
The low-flow stop function protects the pump and saves
energy.
Monitoring of lubrication of motor bearings
When the bearing monitoring function is active, a warn-
ing will appear in the display when the motor bearings
are to be relubricated or replaced. Furthermore, the
function gives an estimated time to service.
This aids in motor maintenance programs.
Inputs and outputs
The CUE is equipped with a number of inputs and out-
puts:
• 1 analog input, 0-10 V, 4-20 mA
- external setpoint
• 1 analog input, 4-20 mA
- sensor input, feedback sensor
• 1 analog output, 0-20 mA
• 4 digital inputs
- start/stop and 3 programmable inputs
• 2 signal relays (C/NO/NC)
- programmable
• 1 RS-485 GENIbus connection.

Features and benefits Grundfos CUE
7
Accessories
Grundfos offers a number of accessories for the CUE.
MCB 114 sensor input module
The MCB 114 is an option offering additional analog
inputs for the CUE:
• 1 analog input, 4-20 mA
• 2 inputs for Pt100/Pt1000 temperature sensors.
Output filters
Output filters are used primarily for protecting the motor
against overvoltage and increased operating tempera-
ture. However, output filters can also be used for reduc-
tion of acoustic motor noise.
Grundfos provides two types of output filter as accesso-
ries for the CUE:
•dU/dtfilters
• sine-wave filters.
Floor mounting option
The CUE is default installed on the wall. The enclo-
sures D1 and D2 can also be installed on the floor on a
pedestal designed for that purpose.
For information about enclosures, see page 45.
Remote mounting kit
Allows control pad to be mounted remotely; 9.8 ft (3m)
cable.

Grundfos CUE
8
Applications
Overview applications
The CUE is a multi-purpose frequency converter suita-
ble for a variety of applications demanding reliable and
cost-efficient pump operation.
The CUE is used in five main fields of application:
Water supply and pressure boosting
Besides general water supply in municipal and indus-
trial waterworks, the CUE is used for these specific
applications:
• water supply
• pressure boosting
• washing.
The typical control modes are constant pressure, con-
stant flow rate. Stop functions are used to stop the
pump when low or no flow is detected.
Heating and air-conditioning
Liquid transfer in:
• heating applications
• cooling and air-conditioning applications.
The typical control modes are proportional pressure or
constant temperature.
Process and sanitary applications
Liquid transfer in:
• breweries and dairies
• pure-water applications
• process applications
• purification applications.
The CUE is typically controlled by an external control-
ler. The typical control mode is Open loop.
Groundwater
Typical applications:
• groundwater supply to waterworks
• irrigation in horticulture and agriculture
• dewatering.
The typical control modes are constant pressure, con-
stant flow rate or constant level control.
Wastewater
Transfer of:
• wastewater
• effluent
• drainage water
• process water.
The typical control mode is constant level function
(emptying function).
TM03 0146 4204TM03 0147 4204TM03 0148 4204TM03 0149 4204TM04 0223 5107

Grundfos CUE
9
Identification
Nameplate
The CUE can be identified by means of the nameplate.
An example is shown below.
Fig. 2 Example of nameplate
* Product number is for drive only. Refer to price lists for packaged drive
part numbers.
Text Description
T/C: CUE (product name)
202P132... (internal code)
Prod.no: Product number: 96754515*
S/N: Serial number: 123456G123 The last three digits indicate the production date:
12 is the week, and 3 is the year 2003.
0.75 kW Typical shaft power on the motor
IN: Supply voltage, frequency and maximum input current
OUT: Motor voltage, frequency and maximum output current. The maximum output frequency usually depends on the
pump type.
CHASSIS/
IP20 Enclosure class
Tamb. Maximum ambient temperature

Grundfos CUE
10
Product range
Overview
The CUE cabinet sizes are characterised by their
enclosures. The table shows the relation between
power size (P2), mains supply (V) and enclosure class
(IP). It shows the complete range of the CUE.
* CUE Hp ratings do not always match motor Hp ratings. Always size CUE by max amperage output and motor amperage.
Typical shaft power P2 Mains supply and enclosure class
1 x 200-240 V 3 x 200-240 V 3 x 380-500 V 3 x 525-600 V 3 x 525-690 V
[kW] [HP]* IP20 IP21 IP55 IP20 IP55 IP20 IP21 IP54 IP55 IP20 IP55 IP21 IP54 IP55
0.55 0.75 z z
0.75 1 z z z z z z
1.1 1.5 z z z z z z z z
1.5 2 z z z z z z z z
2.2 3 z z z z z z z z
34 z z z z z z z z
3.7 5 z z z z
45 z z z z
5.5 7.5 z z z z z z z z
7.5 10 z z z z z z z z
11 15 z z z z z z
15 20 z z z z z z
18.5 25 z z z z z z
22 30 z z z z z z
30 40 z z z z z z
37 50 z z z z z z
45 60 z z z z z z
55 75 z z z z
75 100 z z z z
90 125 z z z z
110 150 z z z z
132 200 z z z z
160 250 z z z z
200 300 z z z z
250 350 z z z z