Grundfos CRE Series Installation And Operating Instruction
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Grundfos CRE Series Installation And Operating Instruction

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CRE, CRIE, CRNE, CRKE, SPKE, MTRE
E-pumps with MLE Model K frequency-controlled permanent-
magnet motor
North America
Installation and operating instructions
CRE, CRIE, CRNE, CRKE, SPKE,
MTRE
Installation and operating instructions
Other languages
http://net.grundfos.com/qr/i/92898117
GRUNDFOS INSTRUCTIONS

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  • Page 1 GRUNDFOS INSTRUCTIONS CRE, CRIE, CRNE, CRKE, SPKE, MTRE E-pumps with MLE Model K frequency-controlled permanent- magnet motor North America Installation and operating instructions CRE, CRIE, CRNE, CRKE, SPKE, MTRE Installation and operating instructions Other languages http://net.grundfos.com/qr/i/92898117...
  • Page 3 CRE, CRIE, CRNE, CRKE, SPKE, MTRE English (US) Installation and operating instructions ............4 Appendix A .

  • Page 4: Table Of Contents

    11.1 Maintenance ......62 Grundfos GO ......30 Taking the product out of operation .

  • Page 5: Limited Warranty

    Grundfos' The symbols and hazard statements below may appear in Grundfos warranty. Grundfos will not be liable for damage or wear to products installation and operating instructions, safety instructions and caused by abnormal operating conditions, accident, abuse, misuse, service instructions.

  • Page 6: Abbreviations And Definitions

    The pumps have been factory-set to constant-curve control mode. SELV single-fault conditions, including earth faults in You can change the control mode with Grundfos GO, HMI 300, HMI other circuits. 301 or Grundfos GO Link. Safe Torque Off. A sub safety function, where a 3.1.2 Pumps with a factory-fitted pressure sensor...

  • Page 7: Identification

    Status. other MLE motors. Motor nameplate The product contains a class 1 radio. Grundfos will You can identify the fitted module by means of the data on the support the product with security updates for at least 2 motor nameplate.

  • Page 8: Battery

    Safe Torque Off ‐ Keep a safe distance to the product during lifting Installation and operating instructions operations. http://net.grundfos.com/qr/i/92916582 ‐ Follow the lifting instructions for the product. 3.8.1 Identification of the Safe Torque Off (STO) function WARNING The version of the Safe Torque Off (STO) function is marked on the Back injury nameplate, after the product version number.

  • Page 9: Installation Requirements

    5. Installation requirements • Keep cooling fins and fan blades clean. 5.1 Installing the product in areas with high humidity WARNING Fire hazard Death or serious personal injury ‐ In high humidity environments where condensation can occur, connect the product permanently to the power supply and activate the standstill heating function.

  • Page 10: Mechanical Installation

    6. Mechanical installation 6.1.1.2 Drain holes The motor has a plugged drain hole on the drive side. The drain 6.1 Mounting the product hole is placed in the flange on the drive side. You can turn the flange 90° to both sides or 180°. WARNING With the drain hole open, the motor becomes self-venting, allowing Crushing of feet...
  • Page 11 2. Remove the terminal box cover. Model K 6. Fit the terminal box cover and make sure that it is turned 180° so that the buttons on the operating panel are aligned with the buttons on the plastic cover. 7. Tighten the four screws (TX25) with 3.7 ft⋅lb (5 Nm). Model K 3.

  • Page 12: Electrical Connection

    If you the power supply for the signal relays. Wait at least 5 are in doubt, contact Grundfos. minutes before you make any connections in the terminal box. Make sure that the power supply cannot Only the following motors can be supplied through an IT network: be switched on accidentally.

  • Page 13: Cover For The Power Cables

    Protective-earth conductors must have a yellow and green (PE) or 7.8.3 Cable cross-section yellow, green and blue (PEN) colour marking. WARNING 7.5 Cover for the power cables Electric shock Model K is equipped with a cover for the power cables. Death or serious personal injury The cover is attached to the insulation cover with 2 screws (2) and ‐...
  • Page 14 7.8.3.1 Cable cross-section data for MLE motors 3 × 440-480 V, 60 Hz, Model K Service factor Speed Power P2 Supply voltage Nominal current Cable cross-section current [rpm] [HP] [AWG] 3 × 440-480 23.1 - 21.8 27.3 - 24.8 3500-4000 3 ×...

  • Page 15: Additional Protection

    7.8.4 Conductors The product is protected against transients from the power supply according to EN 61800-3. In areas with high Conductor types lightning intensity, we recommend external lightning Model K: Use stranded copper conductors only. protection. Overvoltage category: Conductor temperature ratings The product is approved for Overvoltage category III rating.
  • Page 16 LIVE: You can connect supply voltages up to 250 VAC to the output. • Grundfos Digital Sensor input and output SELV: The output is galvanically separated from other circuits. • two Pt100/1000 inputs Therefore, you can connect the supply voltage or safety extra-low •...
  • Page 17 • 0.5 - 3.5 V, 0-5 V or 0-10 V. +5 V Power supply to a potentiometer or sensor Signal ground GDS TX Grundfos Digital Sensor output GDS RX Grundfos Digital Sensor input Signal ground Digital input/output, configurable DI4/OC2 Open collector: Maximum 24 V resistive or inductive...

  • Page 18: Signal Relays

    Grundfos Eye is off The power is off. Operation Pump running Ready Alarm Warning Operating mode Grundfos Eye is rotating green The pump runs in Normal mode in open or closed loop. Operation Pump running Ready Alarm Warning Operating mode Normal Min.
  • Page 19 Grundfos Eye is rotating yellow Warning, but the pump is running. Operation Pump running Ready Alarm Warning Operating mode Manual Grundfos Eye is permanently yellow Warning, but the pump was stopped via a Stop command. Operation Pump running Ready Alarm...

  • Page 20: Signal Cables

    E-pump. The brown wire of the pressure sensor is connected to terminal 24 V of the E-pump. 7.13.3 Connecting a 2-core bus cable 7.12.3 Connection of Grundfos pressure sensor ISP44 to an E- • Connect a screened 2-core bus cable as follows: pump 7.13.4 Bus signal...

  • Page 21: Installing A Communication Interface Module

    Contact Grundfos for further information. If you use a bus signal, the local settings made via Grundfos GO or the HMI 300 or 301 operating panel will be overruled. In case the bus signal fails, the product will run with the local settings made via Grundfos GO or the HMI 300 or 301 operating panel.

  • Page 22: Starting Up The Product

    7. Connect the cable screens of the bus cables to protective earth 8. Starting up the product via one of the earth clamps (H). WARNING Rotating parts Death or serious personal injury ‐ Make sure to install the coupling guards before powering on the product.

  • Page 23: Control Functions

    Up/Down: The buttons change the setpoint. Communication: The button enables communication with Grundfos GO and other products of the same type. Start/Stop: Press the button to make the product ready for operation or to start and stop the product. Start: If you press the button when the product is stopped, the product starts if no other functions with higher priority have been enabled.
  • Page 24 - Press the Start/Stop button. Max. - Press and hold the Down button until all light fields are off. - Use Grundfos GO. - Use a digital input set to External stop. 9.2.7 Resetting alarms and warnings in products with the HMI 200 or 201 operating panel •...

  • Page 25: Operating Panels, Hmi 300 And 301

    When you try to establish radio communication between the product and Grundfos GO or another product, the green indicator light in Grundfos Eye flashes. In the controller display, a note states that a device wants to connect to the product. Press OK on the product operating panel to allow communication with Grundfos GO or Grundfos GO Link and other products of the same type.
  • Page 26 9.3.1 Home display Status Settings Assist Setpoint Control mode 5.00 bar Const. pressure Pos. Symbol Description Home: This menu shows up to four user-defined parameters. You can access each parameter directly from this menu. Operaring mode Actual controlled value Status Settings Assist Status: This menu shows the status of the product and system, warnings and alarms.
  • Page 27 • • Analog input 1, setup • • Analog input 2, setup • • Analog input 3, setup • • Built-in Grundfos sensor • • • • Pt100/1000 inputs Pt100/1000 input 1, setup • • Pt100/1000 input 2, setup •...
  • Page 28 Settings Single pump Multipump system Relay output 1 • • Relay output 2 • • • • Analog output • • Output signal Function of analog output • • Controller settings • • Operating range • • Setpoint influence • •...
  • Page 29 Assist Single pump Multipump system Assisted pump setup • • Setup, analog input • • Setting of date and time • • Setup of multi-pump system • • Description of control mode • • Assisted fault advice • •...

  • Page 30: Grundfos Go

    Const. pressure the product with Grundfos GO. GO using Bluetooth (BLE). Press the Home button to reject Grundfos GO enables you to set functions and gives you access to connection. status overviews, technical product information and current Operaring mode Actual controlled value operating parameters.
  • Page 31 9.4.2 Menu overview for Grundfos GO Dashboard Single pump Multipump system • • View all metrics Single pump Multipump system Pump and application Actual controlled value • • Acc. flow, specific energy • • Energy consumption • Energy consumption, system •...
  • Page 32 • Time for pump changeover • Inputs/outputs Analog input 1 • Analog input 2 • • Analog input 3 Built-in Grundfos sensor • Analog output • • Pt100/1000 input 1 • Pt100/1000 input 2 Digital input 1 • Digital input 2 •...

  • Page 33: Grundfos Go Link

    • 9.5 Grundfos GO Link The product is designed for wired or wireless communication with Grundfos GO Link. Grundfos GO Link enables you to set functions and gives you access to status overviews, configuration and current operating parameters. Ethernet Use Grundfos GO Link together with these interfaces: •...

  • Page 34: Grundfos Eye

    Link is wired to the pump within a short distance, no verification is needed. A direct connection will be established. 9.6 Grundfos Eye The operating condition of the motor is indicated by Grundfos Eye on the motor operating panel. Grundfos Eye indicator light (A)
  • Page 35 Grundfos GO. The green indicator light in the You have selected the motor in Grundfos GO, and the motor is ready middle is flashing continuously. to be connected.

  • Page 36: Setting The Product

    When you have set the operating mode to Manual, the product starts running at the set speed. With Grundfos GO, you can set the speed via the Setpoint menu.
  • Page 37 Constant pressure This control mode requires an external pressure sensor as shown in the examples below. You can set the pressure sensor in the Assist Controller settings menu. See the section on assisted pump setup. The setting range For the recommended controller settings, see the section on the is between 12.5 % and 100 % of maximum head.
  • Page 38 Constant differential-pressure control is achievable with two You can set the sensor manually or by using the Assist menu. individual pressure sensors. The pump uses the inputs from the See the section on assisted pump setup. two sensors and calculates the differential pressure. The sensors must have the same unit and must be set as feedback sensors.

  • Page 39: Setting The Proportional Pressure

    Factory setting See the section on factory settings. Related information 10.57 Factory settings for Grundfos GO 10.8 Automatic Night Setback Once you have enabled automatic night setback, the pump automatically changes between normal duty and night setback, duty 10.6 Setting the proportional pressure at low performance.

  • Page 40: Analog Inputs

    Feedback sensor The sensor is used for the selected control mode. Related information • Setpoint influence 10.57 Factory settings for Grundfos GO The input signal is used for influencing the setpoint. 10.9 Analog inputs • Other function The inputs and outputs available depend on the functional module The sensor input is used for measurement or monitoring.

  • Page 41: Pt100/1000 Inputs

    Electrical signal The sensor input is used for measurement or monitoring. Available signal types: Measured parameter • 0.5 - 3.5 V Select one of the below parameters to be measured in the system • 0-5 V by the sensor connected to the input. •...

  • Page 42: Digital Inputs

    FM311 • • Open contact. Selecting the trigger function can only be set via Grundfos GO Link. Wiring example: The digital inputs can be activated either as active low or active high. The digital inputs will react as described in the table below:...

  • Page 43: Digital Inputs/Outputs

    10.11.1 Timer function for a digital input 10.12 Digital inputs/outputs The inputs and outputs available depend on the functional module Activation delay fitted in the motor. The activation delay (T1) is the time between the digital signal and the activation of the selected function. Digital input/output 3 Digital input/output 4 Functional...

  • Page 44: Signal Relay (Relay Outputs)

    • Limit 1 exceeded • Digital input 3, state Follow digital input 3. If digital input 3 is triggered, the digital • Limit 2 exceeded output is also triggered. • Digital input 1, state • Digital input 4, state • Digital input 2, state Follow digital input 4.

  • Page 45: Controller (Controller Settings)

    If the controller is hunting or unstable, dampen the system by L1: Distance in feet between the pump and the sensor. reducing the gain or increasing the integral time. Factory setting See the section on factory settings. Related information 10.57 Factory settings for Grundfos GO...

  • Page 46: Operating Range

    Pt100/1000 inputs. To enable the function, set one of the analog inputs or Pt100/1000 inputs to Setpoint influence with Grundfos GO or to Ext. setpoint infl. with the HMI 300 or 301 100 % operating panel.

  • Page 47: Predefined Setpoints

    10.17.1.3 Influence table Pos. Description The setpoint is influenced by a curve made of two to eight points. External input signal from 0 to 100 % There is a straight line between the points and a horizontal line Setpoint influence from 0 to 100 % before the first point and after the last point.

  • Page 48: Temperature Influence

    The function requires setting of the following parameters: If all digital inputs are open, the motor stops or runs at the normal setpoint. Set the desired action with Grundfos GO or with the HMI Measured 300 or 301 operating panel.

  • Page 49: Liqtec (Liqtec Function)

    Related information The function is to monitor the outlet pressure from the pump. If the 10.57 Factory settings for Grundfos GO pressure is below 72 psi (5 bar) for more than 5 seconds, a warning is indicated. If the pressure is above 101 psi (7 bar) for more than 8 10.22 Stop function (Low-flow stop function)

  • Page 50: Stop At Min. Speed

    81 (307) Factory setting See the section on factory settings. Related information 10.57 Factory settings for Grundfos GO Position of the non-return valve and pressure sensor in system 10.23 Stop at min. speed with suction lift operation This stop function can be utilised in for example constant level applications where a boost of pressure is not needed.

  • Page 51: Pipe Filling Function

    Related information pressure sensor of the system detects that the pipes have been filled, phase two begins. 10.57 Factory settings for Grundfos GO 2. Pressure build-up phase. The system pressure is increased until 10.25 Pulse flowmeter (Pulse flowmeter setup) the setpoint is reached. The pressure build-up takes place over a pressure build-up time.

  • Page 52: Direction Of Rotation

    Analog input 2 relubricated. • Analog input 3 10.33 Communication • Built-in Grundfos sensor Use this function to set the communication of the product, both • Pt100/1000 input 1 wired and wireless communication. The product contains built-in • Pt100/1000 input 2 fieldbus protocols on the AYB terminals (RS-485).
  • Page 53 Radio communication remains active. 10.33.4 Initiate Bluetooth connection Use this function if Grundfos GO is installed on Huawei smartphones with BLE version 5.0 or older. This function is used to establish a Bluetooth connection to Grundfos GO. Open the...

  • Page 54: Language

    DNS must be configured manually. • If you use Grundfos GO and set the buttons to Not active, the buttons on the HMI 200 or 201 operating panel are disabled, 10.33.6.3 IP address except the Radio communication button.

  • Page 55: Run Start-Up Guide

    • Controller settings • Summary of settings. With Grundfos GO, access the Assisted pump setup menu. With the HMI 300 or 301 operating panel, access the Assisted pump setup menu. 10.51 Setup, analog inputs This function is only available in the HMI 300 and 301 operating panels.

  • Page 56: Multipump Function

    1. Power on both motors. • Alternating operation, time 2. Establish contact to one of the motors with Grundfos GO. The change from one pump or motor to the other is based on time. 3. Set the needed analog and digital inputs via Grundfos GO according to the connected equipment and the required •...
  • Page 57 10. Press OK or the Radio communication button on the motor which is to be added to the multimotor system. 3. Establish contact to one of the motors with Grundfos GO. 11. Press the Right button to continue. 4. Set the required analog and digital inputs via Grundfos GO according to the connected equipment and the required 12.

  • Page 58: Description Of Control Mode

    4. Press OK to confirm No multi-pump function. 5. Press the Right button to continue. 6. Press OK to confirm. 10.54 Description of control mode The function is only available in the HMI 300 and 301 operating panels. The function describes each of the control modes available for the product.

  • Page 59: Priority Of Settings

    Start Stop and Maximum speed settings made with Grundfos GO or on the motor operating panel can be overruled by another operating-mode command sent from a bus, for example Start. If the bus communication is interrupted, the motor resumes its previous operating mode, for example Stop, that was selected...

  • Page 60: Factory Settings For Grundfos Go

    10.57 Factory settings for Grundfos GO Settings With factory-fitted sensor Without factory-fitted sensor Setpoint 75 % of sensor range 75 % speed Operating mode Normal Normal Set user-defined speed 67 % 67 % Control mode Constant pressure Constant curve Pipe-filling function...

  • Page 61: Servicing The Product

    11. Servicing the product WARNING Crushing of feet WARNING Death or serious personal injury Electric shock ‐ Wear safety shoes. Death or serious personal injury ‐ When lifting the motor, attach lifting equipment to the ‐ Switch off the power supply to the product including eye bolts fitted to the motor.

  • Page 62: Maintenance

    11.1 Maintenance 11.1.1 Cleaning the product WARNING Electric shock Death or serious personal injury ‐ Switch off the power supply to the product including the power supply for the signal relays. Make sure that the power supply cannot be switched on accidentally. ‐...

  • Page 63: Fault Finding

    -4 °F (-20 °C) Related information 122 °F (50 °C) 2.1 Related instructions Maximum 7.11 Signal relays 9.6 Grundfos Eye 35 HP MLE motors are rated for a maximum value of 104 °F (40 °C). 14. Technical data 14.1.4 Humidity 14.1 Operating conditions Description Percentage 14.1.1 Installation altitude...

  • Page 64: Inputs And Outputs

    14.2.1 Leakage current (AC) For recommended size of fuses see the appendix The leakage currents are measured without any load on the shaft concerning installation in the USA and Canada. and in accordance with EN 61800-5-1:2007. WARNING Electric shock Death or serious personal injury ‐...

  • Page 65: Other Technical Data

    Use Pt1000 for long wires. LiqTec sensor inputs Use a Grundfos LiqTec sensor only. Screened cable: 0.5 - 1.5 mm / 28-16 AWG. Grundfos Digital Sensor input and output (GDS) Use Grundfos Digital Sensor only. Power supplies, +5 V, +24 V +5 V •...
  • Page 66 C2/C3 C2/C3 Depending on product hardware configuration. Immunity: The motor fulfils the requirements for industrial areas. 14.4.6 Cable entry sizes Contact Grundfos for further information. Number and size of cable entries 14.4.3 Enclosure class Motor Number and size of Supply voltage...

  • Page 67: Accessories

    14.5 Accessories Communication interface Protocol module LonWorks (Single) CIM 100 LonWorks (Multi) CIM 110 PROFIBUS DP CIM 150 Modbus RTU CIM 200 US GiC/GRM 3G/4G CIM 280 BACnet MS/TP CIM 300 Modbus TCP/IP, BACnet IP, PROFINET, GiC/GRM IP, CIM 500 EtherNet IP...

  • Page 68: Applicable Standards

    QR code app. 1. Use the public or private waste collection service. 2. If this is not possible, contact the nearest Grundfos company or service workshop. 3. Dispose of the waste battery through the national collective schemes.
  • Page 69 3 × 440-480 V 1750 2200 2200 3500 4000 4000 1750 2200 2200 3500 4000 4000 1750 2200 2200 3500 4000 4000 To be determined. Check the online version. CRE, CRIE, CRNE, CRKE, SPKE, MTRE installation and operating instructions http://net.grundfos.com/qr/i/92898117...
  • Page 70 8 inches (20 cm) between the radiator and your body. This device complies with Part 15 of the FCC rules and RSS210 of the IC rules. Changes or modifications made to this equipment not expressly approved by Grundfos may void the FCC authorization to operate this equipment.
  • Page 71 Cet appareil est conforme à la section 15 de la réglementation FCC et à RSS210 de la réglementation IC. Les changements ou modifications apportés à cet équipement qui ne sont pas expressément approuvés par Grundfos peuvent annuler l'autorisation de la FCC à utiliser cet équipement.
  • Page 72 Torques See the section on torques. Line reactors The maximum line reactor size in front of the drive must not exceed the following values: Model K Maximum line reactor size [mH] [kW] [HP] 3500-4000 rpm 18.5 Line reactors are often required for six-pulse variable speed drives. Please observe that the MGE, MLE utilize a small DC capacitor concept for lower harmonics and exceeding the maximum inductance may cause resonance between reactor and the MGE, MLE that will reduce the lifetime of the product.
  • Page 73 2941 Brighton Road Oakville, Ontario L6H 6C9 Tel.: +1-905 829 9533 Fax: +1-905 829 9512 Mexico Bombas GRUNDFOS de México S.A. de C.V. Boulevard TLC No. 15 Parque industrial Stiva Aeropuerto Apodaca, N.L. 66600 Tel.: +52-81-8144 4000 Fax: +52-81-8144 4010...
  • Page 74 92898117 07.2023 ECM: 1362630 www.grundfos.com...

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