Grundfos CRE Installation And Operating Instructions Manual

E-pumps with mle model j and k frequency-controlled permanent-magnet motor

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CRE, CRIE, CRNE, CRKE, SPKE, MTRE,

CME

E-pumps with MLE Model J and K frequency-controlled

permanent-magnet motor

North America

Installation and operating instructions

CRE, CRIE, CRNE, CRKE, SPKE,

MTRE

Installation and operating instructions

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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 J and 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, CME English (US) Installation and operating instructions ............4...
Page 4 9.59 Assisted fault advice......62 Grundfos GO ......32 9.60 Priority of settings .
Page 5: Table Of Contents
13.3 Inputs and outputs ......72 13.4 Other technical data ......73 13.5 Accessories .
Page 6: Signal Word
ELCB Earth leakage circuit breaker. Functional module. 1.2 Hazard statements Grundfos Digital Sensor, factory-fitted. The symbols and hazard statements below may appear in Grundfos GENIbus Proprietary Grundfos fieldbus standard. installation and operating instructions, safety instructions and service instructions. GFCI Ground fault circuit interrupter.
Page 7: Intended Use Of The Product
Model K The pumps are factory-set to constant-curve control mode. You can change the control mode with the Grundfos GO, HMI 300, HMI 301 or via the Grundfos GO Link. 2.1.2 Pumps with a factory-fitted pressure sensor Type: MLE160B..284TSC-42-K EDAP...
Page 8 For installation in the USA and Canada, see the appendix. Via the built-in radio module, the product can communicate with other MLE motors. VARIANT Grundfos will support the product with security updates for VARIANT Typ e : P.C. : INPU T OU TPU T P.N.
Page 9: Safe Torque Off (Sto) Function
Death or serious personal injury Installation and operating instructions ‐ Use lifting equipment rated for the weight of the http://net.grundfos.com/qr/i/92916582 product. 2.8.1 Identification of the Safe Torque Off (STO) function ‐ Attach lifting equipment to the motor eyebolts to lift the The version of the Safe Torque Off (STO) function is marked on the entire product.
Page 10: Installation Requirements
4. Installation requirements 5. Mechanical installation 4.1 Installing the product in areas with high humidity 5.1 Mounting the product WARNING WARNING Fire hazard Crushing of feet Death or serious personal injury Death or serious personal injury ‐ ‐ In high humidity environments where condensation Fasten the pump securely to a solid and even can occur, connect the product permanently to the foundation according to the specifications in the...
Page 11 5.1.1.2 Drain holes 180° The motor has a plugged drain hole on the drive side. The drain hole is placed in the flange on the drive side. You can turn the flange 90° to both sides or 180°. With the drain hole open, the motor becomes self-venting, allowing water and humid air to escape.
Page 12: Electrical Connection
If you want to supply the product through an IT network, 6.1 Connecting an external switch make sure that you have a suitable product variant. If you are in doubt, contact Grundfos. We recommend that you connect the product to an external switch. The internal EMC filter remains connected, and 1.
Page 13: Protection Against Electric Shock, Indirect Contact
6.4 Protection against electric shock, indirect contact 6.8.3 Cable cross-section WARNING WARNING Electric shock Electric shock Death or serious personal injury Death or serious personal injury ‐ Connect the product to protective earth and provide ‐ Switch off the power supply to the product including protection against indirect contact in accordance with the power supply for the signal relays.
Page 14 6.8.3.1 Cable cross-section data for MLE motors DANGER Electric shock Death or serious personal injury ‐ Always comply with local regulations as to cable cross-sections. Model J 3 × 440-480 V, 60 Hz Speed Power P2 Nominal current Service factor current Cable cross-section [rpm] [hp]...
Page 15: Additional Protection
6.8.4 Conductors Conductor types Model J: Use stranded or solid copper conductors only. Model K: Use stranded copper conductors only. Conductor temperature ratings Model J: Use minimum 140 °F copper conductors. Model K: Use 167 °F copper conductors only. The wire sizes for the mains supply must be sized for a wire size which is suitable for at least 125% of the rated input current of the motor drive units.
Page 16: Functional Modules
5000 RMS symmetrical amperes, 600 V maximum. • Grundfos Digital Sensor input and output Model K: Suitable for use on a circuit capable of delivering not • two Pt100/1000 inputs more than 5000 rms symmetrical amperes, when protected by gG •...
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 Terminal Type Function Signal ground Brown and black conductors LiqTec sensor input 2 LiqTec sensor input 2 Blue conductor +5 V Power supply to a potentiometer or sensor GENIbus, A GENIbus, A (+) / Modbus, D1 (+) GENIbus, Y GENIbus, GND / Modbus, GND GENIbus, B GENIbus, B (-) / Modbus, D0 (-) Analog input:...
Page 19: Connection Terminals
• one analog output • two dedicated digital inputs • two configurable digital inputs or open-collector outputs • Grundfos Digital Sensor input and output • two Pt100/1000 inputs • two LiqTec sensor inputs • two signal relay outputs •...
Page 20: Operation
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 21 Grundfos Eye is rotating yellow There is a warning, but the pump is running. Operation Pump running Ready Alarm Warning Operating mode Manual Grundfos Eye is permanently yellow There is a warning, and the pump is stopped via a Stop command.
Page 22: Signal Cables
E-pump. The brown wire of the pressure sensor is connected to terminal 24 V of the E-pump. 6.14.3 Connecting a 2-core bus cable 6.13.3 Connection of Grundfos pressure sensor ISP44 to an • Connect a screened 2-core bus cable as follows: E-pump 6.14.4 Connecting an Ethernet cable...
Page 23: 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 HMI 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 HMI 301 operating panel.
Page 24 4. Remove the screw (E). Model K motor 9. Route the wires for the module through one of the cable glands. Removing the screw, shown on a Model J motor 5. Fit the module by aligning it with the three plastic holders (F) and the connection plug (G).
Page 25: Starting Up The Product
Death or serious personal injury ‐ If the operating panel is cracked or perforated, replace WARNING it immediately. Contact the nearest Grundfos sales Toxic liquids company. Death or serious personal injury You can change the settings by means of the following user ‐...
Page 26 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 27 - Switch off the power supply until the indicator lights are off. - Switch the external start and stop input off, and then on again. - Use Grundfos GO. - Use the digital input if you have set it to Alarm resetting. Min.
Page 28 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 29 8.3.1 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 30 Measured values • • Analog input 1 • • Analog input 2 • • Analog input 3 • • Grundfos Direct Sensor • • • • Pt100/1000 input 1 Pt100/1000 input 2 • • Analog output • • Warning and alarm •...
Page 31 • • Analog input 1, setup • • Analog input 2, setup • • Analog input 3, setup • • Grundfos Direct Sensor • • Pt100/1000 inputs • • • • Pt100/1000 input 1, setup Pt100/1000 input 2, setup •...
Page 32 (10 m). The first time Grundfos GO communicates with the product, you enable communication by pressing the Communication button or OK on the operating panel. Later when communication takes place, the product is recognised by Grundfos GO, and you can select the product from the List menu.
Page 33 8.4.2 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 34 Sensor to be used • • Time for pump changeover Inputs/outputs Analog input 1 • Analog input 2 • Analog input 3 • Grundfos Direct Sensor • • Analog output • Pt100/1000 input 1 Pt100/1000 input 2 • Digital input 1 • •...
Page 35 Settings Single pump Multipump system Limit 4 exceeded • • LiqTec function • Motor bearing monitoring • Special functions Low-flow stop • Pipe-filling function • • Pulse flow meter • Ramps • Standstill heating • Stop at min. speed • Communication Bluetooth communication •...
Page 36 MI301-Direct connect or MI301-Radio. When communication takes parameters. place, the product is recognized by Grundfos GO Link, and you can Use the Grundfos GO Link together with the following interfaces: connect using Direct connect or Radio scan without having to run a •...
Page 37: Grundfos Eye
8.6 Grundfos Eye The operating condition of the motor is indicated by Grundfos Eye on the motor operating panel. Grundfos Eye indicator light (A) Indicator light Indication Description Power off No lights are on. The motor is not running. Power on Two opposite green indicator The motor is running.
Page 38 Indicator light Indication Description 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. The green indicator light in the The motor is controlled by Grundfos GO or exchanging data with middle flashes quickly for a few Grundfos GO.
Page 39: Setting The Product
Use this function to set the speed in percentage of the maximum speed. 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 40 Related information 9.19 Controller settings 9.5.4 Constant differential pressure Constant pressure The pump maintains a constant differential pressure, independently of the flow rate in the system. This control mode is primarily suitable This control mode requires an external pressure sensor as shown in for systems with relatively small pressure losses.
Page 41 Related information 9.19 Controller settings 9.54 Assisted pump setup 9.5.5 Constant differential temperature The pump maintains a constant differential temperature in the system, and the pump performance is controlled according to this. △t Constant flow rate This control mode requires an external flow sensor. See the example below.
Page 42 Related information 9.61 Factory settings for Grundfos GO 9.8 Automatic Night Setback Once you have enabled automatic night setback, the pump automatically changes between normal duty and night setback, duty at low performance.
Page 43: Setpoint Influence
Measured parameter Select one of the below parameters to be measured in the system by the sensor connected to the input. 3-wire sensor, 0.5 - 3.5 V, 0-5 V, 0-10 V DPT DTT Setpoint influence, 0.5 - 3.5 V, 0-5 V, 0-10 V; 0/4-20 mA Pos.
Page 44 Sensor function/measured Pos. parameter 9.10 Grundfos Direct Sensor Inlet pressure Grundfos Direct Sensor is a digital sensor that auto detects range Diff. press., inlet and unit. Outlet pressure Grundfos Direct Sensor always has the capability to also measure the media temperature. The pump will automatically detect range Diff.
Page 45: Dry-Running Protection
The input signal is used for influencing the setpoint. • Other function The sensor input is used for measurement or monitoring. Measured parameter Select one of the below parameters to be measured in the system by the sensor connected to the input. Sensor function/measured Pos.
Page 46: Digital Inputs
FM311 • • or 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 47: Digital Inputs/Outputs
9.15.1 Timer function for a digital input 9.16 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 48 • Limit 1 exceeded • Digital input 2, state Follow digital input 2. If digital input 2 is triggered, the digital • Limit 2 exceeded output is also triggered. • Limit 3 exceeded • Digital input 3, state • Limit 4 exceeded Follow digital input 3.
Page 49: Controller Settings
If the controller is too slow-reacting, increase the gain. If the controller is hunting or unstable, dampen the system by Δp reducing the gain or increasing the integral time. Related information L1: Distance in feet between the pump and the sensor. 9.61 Factory settings for Grundfos GO...
Page 50: 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 HMI 301 100 % operating panel.
Page 51: Predefined Setpoints
Pos. Description Setpoint speed in percentage Actual setpoint speed in percentage User-set minimum speed in percentage 9.21.1 Setpoint influence functions 9.21.1.1 Linear function The setpoint is influenced linearly from 0 to 100 %. 100 % 3.5 V 10 V 20 mA 20 mA 204 °C Pos.
Page 52: Temperature Influence
If all digital inputs are open, the motor stops or runs at the normal Limit 4 exceeded in a multipump system is a local function. setpoint. Set the desired action with the Grundfos GO or with the The selected action only has an impact on the single pump, for HMI 300 or HMI 301 operating panel.
Page 53: Stop Function (Low-Flow Stop Function)
Related information Example 9.61 Factory settings for Grundfos GO The function is to monitor the outlet pressure from the pump. If the pressure is below 72 psi (5 bar) for more than 5 seconds, a warning 9.26 Stop function (Low-flow stop function)
Page 54 The setting range is 5 to 30 % of the rated flow rate. • If the flow rate is higher than the set minimum flow rate, the Related information pump returns to continuous operation at constant pressure. 9.61 Factory settings for Grundfos GO...
Page 55: Pipe Filling Function
Pressure build-up phase (constant-pressure operation) See the section on factory settings. Setpoint Related information Filling pressure 9.61 Factory settings for Grundfos GO Actual value 9.27 Stop at min. speed Setpoint ramp-up This stop function can be utilised in, for example, constant level Filling time applications where a boost of pressure is not needed.
Page 56: Standstill Heating
Stop, a low AC voltage is applied to the motor windings. 9.15 Digital inputs The voltage is not high enough to make the motor rotate, but 9.61 Factory settings for Grundfos GO ensures that sufficient heat is generated to avoid condensation in the product, including the electronic parts in the drive.
Page 57 Modbus RTU communication. Select a number between 1 and 247. 9.37.4 Initiate Bluetooth connection Use this function if Grundfos GO is installed on Huawei Baud rate smartphones with BLE version 5.0 or older. This function is used Use this function to select the baud rate at which Modbus RTU is to to establish a Bluetooth connection to Grundfos GO.
Page 58 The product is equipped with an Ethernet port with a GENI GDP protocol that can be accessed from Grundfos iSOLUTION Cloud and other cloud based solutions. Grundfos will support the product with security updates for at least 2 years from production of the unit. 9.37.6.1 IP Settings Use this function to set the Ethernet communication.
Page 59: Enable/Disable Settings
1. Connect Grundfos GO to the product. reasons. • If you use the Grundfos GO and set the buttons to Not active, 2. Go to Settings > General > Connection code. the buttons on the HMI 200 or HMI 201 operating panel are 3.
Page 60 1. Power on both motors. • Alternating operation, time: 2. Establish contact to one of the motors with the 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 the Grundfos GO, according to the connected equipment and the required •...
Page 61 2. Power on both motors. 11. Press the Right button to continue. 3. Establish contact to one of the motors with the Grundfos GO. 12. Set the Time for pump changeover. 4. Set the required analog and digital inputs via the Grundfos...
Page 62 Start Stop and Maximum speed settings made with the Grundfos GO or the 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, selected with the Grundfos...
Page 63 9.61 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 64: Servicing The Product
10. 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 65: Taking The Product Out Of Operation
10.1 Maintenance 10.1.1 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 66: Fault Finding
12. Fault finding Related information 1.1 Related instructions WARNING 6.12 Signal relays Electric shock 8.6 Grundfos Eye Death or serious personal injury 12.1 Fault and warning signals ‐ Switch off the power supply before you start any work on the product. The fault indication below can be read by the number in brackets, text or status indications on the operating panel, depending on the ‐...
Page 67 Grundfos Eye Cause Remedy Pump communication fault (10) There is a communication fault between • Make sure that all pumps of the multi-pump this pump and the other pumps of the multi- system are correctly set. pump system. Forced pumping (29) •...
Page 68 Grundfos Eye Cause Remedy Replace the motor bearings (30) • Replace the bearings. Follow the instructions for the pump. The bearings are worn. See the relevant section on bearing replacement in the service instructions. Internal sensor fault (88) • Check that the plug and cable are connected The pump receives a signal from the correctly to the sensor.
Page 69 122 and 140 °F (50 and 60 °C), select an oversized motor. Contact Products installed up to 3280 ft (1000 m) above sea level can be Grundfos for further information. loaded 100 %. The motors can be installed up to 11480 ft (3500 m) above sea Model K level.
Page 70 13.2 Technical data, three-phase motors WARNING Electric shock Death or serious personal injury ‐ Use the recommended fuse size. Supply voltage • 3 × 440-480 V -10 % / +10 %, 60 Hz, PE • 3 × 200-240 V -10 % / +10 %, 60 Hz, PE Check that the supply voltage and frequency correspond to the values stated on the nameplate.
Page 71 Sound pressure level Sound pressure level Motor power P2 Supply voltage [dB(A)] [hp] 3600 rpm 4000 rpm 76.5 3 × 200-240 72.5 85.5 89.1 89.1 68.5 80.5 72.5 85.5 3 × 440-480 72.5 85.5 89.1 74.5 87.6 Permanent-magnet motor 13.2.1 Leakage current (AC) WARNING The leakage currents are measured without any load on the shaft Electric shock...
Page 72: Inputs And Outputs
Protocols TC/IP GENI, GDP. Screened cable: 0.5 - 1.5 mm / 28-16 AWG. Cable type, Standard CAT5, CAT5e or CAT6. Grundfos Digital Sensor input and output (GDS) Open-collector digital outputs (OC) Use Grundfos Digital Sensor only. Current-sinking capability: 75 mADC, no current sourcing.
Page 73: Other Technical Data
Screened cable: 0.5 - 2.5 mm / 28-12 AWG. Maximum cable length: 1640 ft (500 m). Bus input Grundfos GENIbus protocol, RS-485. Grundfos Modbus protocol, RS-485. Screened 3-core cable: 0.5 - 1.5 mm / 28-16 AWG. Maximum cable length: 1640 ft (500 m).
Page 74 3 × 440-480 3 × 440-480 Model J Emission category Motor [hp] 3500-4000 rpm 7 1/2 C3/C2 C3/C2 C2, if equipped with an external Grundfos EMC filter. Model K Emission category Motor [hp] 3400-4000 rpm 3500-4000 rpm C2/C3 C2/C3 C2/C3...
Page 75: Accessories
13.4.6 Cable entry sizes Identify the motor model by means of the nameplate on the terminal box. Type: MLE160B..284TSC-42-K EDAP P.N.: TPUT Variant Env. HMI: Made in Hungary IES2 CIM: NDE: DK-8850 Bjerringbro Denmark Wgt: Example shown on a Model K motor Number and size of cable Model entries...
Page 76: 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 77: Limited Consumer Warranty
Products sold by Grundfos that are manufactured by others are not covered by this warranty. Note that when purchasing a Grundfos product online, it is...
Page 78 Garantías Grundfos; el daño accidental o deliberado o el uso indebido de un Magnusson-Moss y cualquier otra legislación federal y/o estatal producto.
Page 79 92898117 02.2025 ECM: 1412057 www.grundfos.com...

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