Grundfos CREC Instructions Manual
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Grundfos CREC Instructions Manual

Grundfos CREC Instructions Manual

E-pumps with mgec motor
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CREC
E-pumps with MGEC motor
Installation and operating instructions
CR, CRI, CRN 1s-255
Installation and operating instructions
Other languages
http://net.grundfos.com/qr/i/99078486
GRUNDFOS INSTRUCTIONS
CR, CRI, CRN 1s-255
Safety instructions
(all available languages)
http://net.grundfos.com/qr/i/99262913

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  • Page 1 GRUNDFOS INSTRUCTIONS CREC E-pumps with MGEC motor Installation and operating instructions CR, CRI, CRN 1s-255 CR, CRI, CRN 1s-255 Installation and operating instructions Safety instructions Other languages (all available languages) http://net.grundfos.com/qr/i/99078486 http://net.grundfos.com/qr/i/99262913...
  • Page 3 CREC English (GB) Installation and operating instructions ........4...

  • Page 4: Table Of Contents

    English (GB) Installation and operating instructions Original installation and operating instructions 10.4 Set user-defined speed ... . 20 10.5 Control mode ....20 Table of contents 10.6 Analog inputs .

  • Page 5: General Information

    1.3 Abbreviations and definitions 1.1 Hazard statements Analog signal common. The symbols and hazard statements below may Analog input. appear in Grundfos installation and operating instructions, safety instructions and service Alarm, out of range at lower limit. instructions. Analog output.

  • Page 6: Product Introduction

    2. Product introduction 3.3 Battery WARNING 2.1 Product description Electric shock Grundfos E-pumps are mounted with frequency- Death or serious personal injury controlled permanent-magnet MGEC motors for ‐ Do not attempt to access and replace three-phase power supply connection. The motors the battery.

  • Page 7: Receiving The Product

    The cover must be large enough to ensure that ‐ Keep a safe distance to the product the product is not exposed to direct sunlight, UV during lifting operations. radiation, rain or snow. Grundfos does not supply ‐ Follow the lifting instructions for the covers. product.

  • Page 8: Location

    • Open the drain holes in the product. When you open the drain hole, the enclosure class of the motor will be lower than standard. Side view • Connect the product permanently to the mains supply. In areas with a high humidity, activate the Pos.

  • Page 9: Mechanical Installation

    6. Mechanical installation 6.2 Product installation The drive needs to be installed in one of the following 6.1 Mounting the product two positions: WARNING Crushing of feet Death or serious personal injury ‐ Fasten the pump securely to a solid and even foundation according to the specifications in the installation and operating instructions for the pump.

  • Page 10: Electrical Connection

    Switch off the power supply to the suitable product variant. If you are in product including the power supply for doubt, contact Grundfos. the signal relays. Wait at least 5 The internal EMC filter remains connected, minutes before you make any and subsequently no reduced leakage connections in the terminal box.

  • Page 11: Cable Crosssection

    7.6.2 Cable cross-section Protective earth terminal WARNING Cable cross- Power P2 Torque Electric shock section Death or serious personal injury [kW] [Nm] ‐ Switch off the power supply to the product including the power supply for 0.78 the signal relays. Wait at least 5 0.78 minutes before you make any connections in the terminal box.

  • Page 12: Additional Protection

    Pos. Description Pos. Description Phase 1 Residual-current circuit breaker, type B Phase 2 Phase 1 Phase 3 Phase 2 Protective earth Phase 3 Protective earth 7.7 Additional protection 7.7.2 Overvoltage and undervoltage protection 7.7.1 Residual-current circuit breakers Overvoltage and undervoltage may occur in case WARNING of unstable power supply or a faulty installation.

  • Page 13: Functional Module

    7.7.5 Protection against phase unbalance Signal relay 1 Phase unbalance on the power supply must LIVE: You can connect supply voltages up to 250 be minimised. The three-phase motor must be VAC to the output. connected to a power supply with a quality SELV: The output is galvanically separated from corresponding to IEC 60146-1-1, class C.
  • Page 15 Terminal Type Function Resistance load Normally open contact Relay 1: NO 3 A, NC 3 A, 250 VAC Relay 2: NO 5 A, NC 3 A, 30 VDC Inductance load, COS 0.4 C1, C2 Relay Relay 1: NO 1.2 A, NC 1.2, 250 Relay 2: NO 2.0 A, NC 1.2 A, 30 Normally closed contact Analog signal common...

  • Page 16: Signal Cables

    7.9 Signal cables Use screened cables with a cross-sectional area of minimum 0.5 mm and maximum 1.5 mm for the external on/off switch, digital inputs, setpoint and sensor signals. The wires in the motor terminal box must be as short as possible.

  • Page 17: Starting Up The Product

    ‐ If the operating panel is cracked or WARNING perforated, replace it immediately. Toxic liquids Contact the nearest Grundfos sales Death or serious personal injury company. ‐ Wear personal protective equipment. All settings are saved if the power supply is switched CAUTION off.
  • Page 18 Pos. Symbol Description Left/RESET/ Right Up/Down Stop LOCAL/ REMOTE Start 9.2.1 Home display This page shows the main display info. Press Menu to display more parameters.
  • Page 19 9.2.2 Menu overview for the operating panel Quick start-up 3 Assist 1 Status 3-1 Assisted pump setup 1-1 Operation status • Sensor 1, unit • Operation mode • Sensor 1, range, min. value • Control mode • Sensor 1, range, max. value 1-2 Pump performance •...

  • Page 20: Setting The Product

    10. Setting the product You can set control functions via the operating panel. 10.1 Setpoint When you have selected the desired control mode, set the setpoint. 10.2 Operating mode 10.3 Set manual speed Use this function to set the speed in percentage of the maximum speed.

  • Page 21: Analog Inputs

    10.6 Analog inputs Constant differential-pressure control is achievable with two individual pressure sensors. The functional module provides 2 analog inputs: The pump uses the inputs from the two sensors • Analog input 1 (Terminal AI1) and calculates the differential pressure. •...

  • Page 22: Digital Inputs

    Unit Parameter Available units Pressure bar, m, kPa, psi, ft Level cm, m, ft, in Pump flow /h, l/s, yd /h, gpm Liquid temperature °C, °F Other parameter Electrical signal Available signal types: • 0-10 V AVI mode, with internal power •...

  • Page 23: Digital Inputs/Outputs

    a pressure switch installed on the inlet side of the pump a float switch installed on the inlet side of the pump. • Reset When the input is activated, a fault indication, if any, is reset. • External Fault When the input is activated, a timer is started. If the input is activated for more than 5 seconds, the motor stops and a fault is indicated.

  • Page 24: Analog Output

    10.9 Analog output Motor load The functional module provides 1 analog output: 100 % • Analog output (Terminals AO, PE) 0 mA 20 mA Wiring example: 4 mA 20 mA Motor current 100 % 200 % 10 V 0 mA 10 mA 20 mA 4 mA...

  • Page 25: Operating Range

    10.10 Operating range If the power supply is switched off, the deceleration of the product only depends on the load and inertia. Set the operating range as follows: 1. Set the minimum speed within the range from fixed minimum speed (5) to user-set maximum speed (2).

  • Page 26: Communication

    10.13 Communication Select between these values: • 2 bits Use this function to set the wired communication method. The product contains built-in fieldbus 10.14 Set date and time protocols on the AYB terminals (RS-485). Use this function to set the date and time as well as 10.13.1 Setup of AB terminals how you want them to be viewed on the display.

  • Page 27: Servicing The Product

    11. Servicing the product WARNING Crushing of hands WARNING Death or serious personal injury Electric shock ‐ Follow the instructions in the service Death or serious personal injury instructions for the motor. ‐ Switch off the power supply to the ‐...

  • Page 28: Maintenance

    To clean the motor, follow the procedure below: • The replacement or servicing of 1. Let the motor cool down first to avoid batteries must be carried out by a condensation. qualified person. • The battery contained within this 2. Spray it with cold water, and use only non- product, whether new or used, is aggressive cleaning materials.

  • Page 29: Fault And Warning Signals

    13.1 Fault and warning signals Fault signals Description Cause Remedy Over-current during acceleration (ocA) Over-current during deceleration (ocd) Over-current during steady operation (ocn) Over-current at stop (ovS) • ocA: Increase the acceleration time ocd: Increase the deceleration time • ocA: Increase the acceleration time of the S-curve ocA, ocd ocd: Increase the deceleration...
  • Page 30 Description Cause Remedy • An ON/OFF controller of an • Check the action timing of the electromagnetic contactor is contactor and make sure it is used at the output (U/V/W) of not turned on or off when the the drive. drive outputs the voltage.
  • Page 31 Description Cause Remedy Over-voltage during acceleration (ovA) Over-voltage during deceleration (ovd) Over-voltage at constant speed (ovn) Over-voltage at stop (ovS) • Decrease the acceleration time. • Replace the drive with a larger • Acceleration is too slow. capacity model. • Increase the setting value for deceleration time.
  • Page 32 Description Cause Remedy Check if the over-voltage warning occurs after acceleration stops. When the warning occurs, do the following: • Increase the acceleration time. • Acceleration time is too short. • Set over-voltage stall prevention. • Increase the setting value for S- curve acceleration arrival time 2.
  • Page 33 Description Cause Remedy Low-voltage during acceleration (LvA) Low-voltage during deceleration (Lvd) Low-voltage at constant speed (Lvn) Low-voltage at stop (LvS) • Improve the power supply • Loss of power. conditions. • Check if the power specification • Incorrect drive model. matches the drive.
  • Page 34 Description Cause Remedy IGBT overheating (oH1) • Check the ambient temperature. • Regularly inspect the ventilation hole of the control cabinet. • The ambient temperature or the • Change the location of the temperature inside the cabinet installation if there are heating is too high, or the ventilation objects in the hole of the control cabinet is...
  • Page 35 Description Cause Remedy Overload (oL) • The load is too large. • Decrease the load. • Acceleration/deceleration time • Increase the setting values for and working cycle is too short. acceleration/deceleration time. • Adjust the settings for V/F curve, especially the setting value for the mid-point voltage.
  • Page 36 Warning signals Description Cause Remedy Communication error (CE1, 2, 3, 4, 10) CE1, 2, 3, 4 • Check if the communication • Incorrect communication command is correct. command from the host. CE10 • Check if the host transmits the • CE1: RS-485 Modbus invalid •...
  • Page 37 PID feedback loss device. • If the PID error still occurs after checking all the wiring, return • Hardware error. the product to Grundfos for repair. ACI analog signal loss (AnL) • Re-tighten the terminals. • Loose or broken ACI wiring.
  • Page 38 Description Cause Remedy Over-torque 1 (ot1) • Re-configure the torque • Incorrect parameter setting. settings. • Mechanical error, like a • Remove the cause of the mechanical lock due to over- malfunction. torque. • Decrease the load. • The load is too large. •...
  • Page 39 Description Cause Remedy Motor overheating (oH3) • The motor is locked. • Clear the motor lock status. • Decrease the load. • The load is too large. • Install a motor with a larger capacity. • Change the installation location if there are heating devices in the surroundings.
  • Page 40 Description Cause Remedy Output phase loss (OPHL) • Unbalanced three-phase • Replace the motor. impedance of the motor. • Check the cable. • The wiring is incorrect. • Replace the cable if necessary. • The motor is a single-phase • Replace the motor with a three- motor.

  • Page 41: Technical Data

    14. Technical data 14.1.3 Ambient temperature 14.1.3.1 Ambient temperature during storage and 14.1 Operating conditions transportation 14.1.1 Installation altitude Description Temperature [°C] The installation altitude is the height above sea level of the installation site. Minimum Products installed up to 1000 m above sea level can Maximum be loaded 100 %.

  • Page 42: Technical Data, Three-Phase Motors

    14.2 Technical data, three-phase motors 14.2.1 Leakage current (AC) WARNING WARNING Electric shock Electric shock Death or serious personal injury Death or serious personal injury ‐ ‐ If the leakage current is greater than Use the recommended fuse size. 3.5 mA, use a PE cable with a minimum cross-section of at least 10 Supply voltage , or use 2 separate PE cables with...

  • Page 43: Inputs And Outputs

    Maximum cable length: 500 m. Analog inputs (AI) Voltage signal ranges: Bus input • 0-5 VDC, AU Grundfos Modbus protocol, RS-485. • 0-10 VDC, AU. Screened 3-core cable: 0.5 - 1.5 mm / 28-16 AWG. Voltage signal: Maximum cable length: 500 m.

  • Page 44: Dimensions And Weights

    14.4 Dimensions and weights Power P2 Weight [kW] [kg] 319.7 16.5 274.3 16.9 274.3 17.7 319.7 23.8 319.7 25.8 463.5 339.8 40.2 463.5 339.8 41.2 442.4 14.5 Other technical data 14.5.3 Enclosure class IP ratings are evaluated in accordance with IEC 14.5.1 Ecodesign Directive 60034-5.

  • Page 45: Applicable Standards

    1. Use the public or private waste collection service. 5-10 W. 2. If this is not possible, contact the nearest 14.5.6 Cable entry sizes Grundfos company or service workshop. 3. Dispose of the waste battery through the national Number and size of Motor collective schemes.
  • Page 46 Argentina Colombia Hong Kong Bombas GRUNDFOS de Argentina S.A. GRUNDFOS Colombia S.A.S. GRUNDFOS Pumps (Hong Kong) Ltd. Ruta Panamericana km. 37.500industin Km 1.5 vía Siberia-Cota Conj. Potrero Unit 1, Ground floor, Siu Wai industrial 1619 - Garín Pcia. de B.A.
  • Page 47 Lithuania Serbia Turkey GRUNDFOS Pumps UAB Grundfos Srbija d.o.o. GRUNDFOS POMPA San. ve Tic. Ltd. Smolensko g. 6 Omladinskih brigada 90b Sti. LT-03201 Vilnius 11070 Novi Beograd Gebze Organize Sanayi Bölgesi Tel.: + 370 52 395 430 Tel.: +381 11 2258 740...
  • Page 48 93355811 06.2025 ECM: 1416469 www.grundfos.com...

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