Grundfos CRE Series Installation And Operating Instructions Manual
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Grundfos CRE Series Installation And Operating Instructions Manual

E-pumps with mle frequency-controlled permanent-magnet motors
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GRUNDFOS INSTRUCTIONS
CRE, CRIE, CRNE, SPKE, CRKE,
MTRE, CME
Grundfos E-pumps with MLE frequency-controlled permanent-magnet
motors
Installation and operating instructions

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Summary of Contents for Grundfos CRE Series

  • Page 1 GRUNDFOS INSTRUCTIONS CRE, CRIE, CRNE, SPKE, CRKE, MTRE, CME Grundfos E-pumps with MLE frequency-controlled permanent-magnet motors Installation and operating instructions...

  • Page 2: Table Of Contents

    Symbols used in this document Products manufactured by GRUNDFOS PUMPS CORPORATION Abbreviations and definitions (Grundfos) are warranted to the original user only to be free of General information defects in material and workmanship for a period of 24 months General description...

  • Page 3: Symbols Used In This Document

    ELCB Ground leakage circuit breaker. Caution it may result in malfunction or damage to the Grundfos Digital Sensor. equipment. Factory-fitted sensor in some Grundfos pumps. Notes or instructions that make the job easier GENIbus Proprietary Grundfos fieldbus standard. Note Note and ensure safe operation.

  • Page 4: General Information

    All other settings can only be made by means of the R100 or Grundfos GO Remote. Important parameters, such as actual value of control parameter, power consumption, etc. can be read via the R100 or Grundfos GO Remote. If special or customized settings are required, use Grundfos PC Tool E-products.

  • Page 5: Ensuring Motor Cooling

    The cover must be sufficiently large to ensure that the motor is (PE) or yellow/green/blue (PEN) color marking. not exposed to direct sunlight, rain or snow. Grundfos does not supply covers. We therefore recommend that you have a cover 7.1.1 Protection against power supply voltage transients built for the specific application.

  • Page 6: Power Supply

    7.2 Power supply 7.2.2 Three-phase supply voltage • 3 x 440-480 V - 10 %/+ 10 %, 50/60 Hz, PE. 7.2.1 Single-phase supply voltage • 1 x 200-240 V - 10 %/+ 10 %, 50/60 Hz, PE. In order to avoid loose connections, ensure that Check that the supply voltage and frequency correspond to the the terminal block for L1, L2 and L3 is pressed Caution...

  • Page 7: Additional Protection

    Note Note leakage current of all the electrical equipment in • Grundfos Digital Sensor input and output the installation must be taken into account. • two Pt100/1000 inputs The leakage current of the motor can be found in section •...
  • Page 8 +24 V Supply +24 V Supply Supply to potentiometer +5 V and sensor Ground Grundfos Digital Sensor GDS TX output Grundfos Digital Sensor GDS RX input Analog input: 0-20 mA / 4-20 mA 0.5 - 3.5 V / 0-5 V / 0-10 V...
  • Page 9 • two analog inputs • two digital inputs or one digital input and one open-collector output • Grundfos Digital Sensor input and output • two signal relay outputs • GENIbus connection. See fig. 9. Digital input 1 is factory-set to be start/stop input where open circuit will result in stop.
  • Page 10 GND. Ground Connection terminals, CME pump Fig. 9 Grundfos Digital Sensor GDS TX output GDS RX Grundfos Digital Sensor input Analog input: 0-20 mA / 4-20 mA 0.5 - 3.5 V / 0-5 V / 0-10 V...

  • Page 11: Signal Cables

    7.5 Signal cables 7.6 E-pump electrical connections • Use screened cables with a conductor cross-section of min. 28 7.6.1 Connection of E-pump to Danfoss pressure sensor AWG and max. 16 AWG for external on/off switch, digital MBS3000 inputs, setpoint and sensor signals. The blue wire of the pressure sensor is connected to the #4 •...

  • Page 12: Bus Connection Cable

    If a screened 2-core cable is used in the existing installation, temperatures between 122 and 140 °F, an oversized motor must connect it as shown in fig. 14. be selected. Contact Grundfos for further information. Motor 8.3 Installation altitude The motor must not be installed more than Caution 6560 ft above sea level.

  • Page 13: Air Humidity

    Keep cooling fins and fan blades clean. The pump is operating at a manually set speed. Figure illustrates the min. and max. curves. 9. Operating and control modes Grundfos E-pumps are set and controlled according to operating and control modes. 9.1 Overview Max. Operating modes Normal Min.

  • Page 14: Control Mode

    Changes the setpoint. Fig. 18 Pump in constant-pressure control mode Enables radio communication with the Factory setting Grundfos GO Remote and other products of Pumps supplied with pressure sensor have been factory-set to the same type. constant-pressure control mode. Makes the pump ready for operation/starts The setpoint value corresponds to 50 % of the sensor measuring and stops the pump.
  • Page 15 Setting to max. curve: 10.1.1 Setpoint setting • Press continuously to change over to the max. curve of Set the desired setpoint of the pump by pressing the pump (top light field flashes). When the top light field is on, The light fields on the control panel will indicate the setpoint set.
  • Page 16 If the pump has been stopped by pressing , it can only be restarted by pressing The pump can also be stopped with the R100, Grundfos GO Remote or via a digital input set to "External stop". See section 13. Priority of settings.

  • Page 17: Changing The Position Of The Control Panel

    4. Turn the plastic cover 180 °. 10.2 Changing the position of the control panel It is possible to turn the control panel 180 °. Follow the Note Note Do not twist the cable more than 90 °. instructions below. 1.

  • Page 18: R100 Remote Control

    During communication, the R100 must be pointed at the control Grundfos remote control R100. panel. When the R100 communicates with the pump, the indicator light in the middle of the Grundfos Eye will flash green. See page 36. The R100 offers additional possibilities of setting and status displays for the pump.
  • Page 19 10.3.2 OPERATION menu Manual speed When communication between the R100 and the pump has been established, the first display in this menu will appear. Setpoint Without sensor With pressure sensor In this display, the pump speed can be set in %. When the operating mode has been set to "Manual", the pump will run at the set speed.
  • Page 20 Warning Warning log 1 to 5 In case of a warning, the cause will appear in this display together In case of "warning" faults, the last five warning indications will with a fault code. appear in the warning log. "Warning log 1" shows the latest fault, "Warning log 2"...
  • Page 21 Actual controlled value Pt100/1000 input 1 and 2 Without sensor With pressure sensor The actual controlled value will appear in this display if a sensor has been connected and the function of the analog input has been set to "Feedback sensor". If two separate sensors are used to measure a differential parameter, the function of two analog inputs must be set to "Feedback sensor".
  • Page 22 Operating hours 10.3.4 INSTALLATION menu Control mode Tolerance: ± 2 %. The value of operating hours is an accumulated value and cannot Select one of the following control modes: be reset. • Const. pressure Replace motor bearings • Const. diff. press. •...
  • Page 23 Heating systems are systems in which an increase in pump Guidelines for setting of PI controller performance will result in a rise in temperature at the sensor. The table below shows the recommended controller settings: Cooling systems are systems in which an increase in pump performance will result in a drop in temperature at the sensor.
  • Page 24 How to set the PI controller Buttons on pump For most applications, the factory setting of the controller constants K and T will ensure optimum pump operation. However, in some applications an adjustment of the controller may be needed. Proceed as follows: 1.
  • Page 25 The priority of the selected functions in relation to each other Digital input 1 and 2, Function appears from section 13. Priority of settings. A stop command will always have the highest priority. The number of available displays depends on the pump type. See below.
  • Page 26 Digital input/output 3 and 4, Function Low-flow stop function The low-flow stop function can be set to these values: • Not active • Energy optimal • High comfort • User-defined. When the low-flow stop function is active, the flow will be monitored.
  • Page 27 Operating conditions for the low-flow stop function It is only possible to use the stop function if the system incorporates a pressure sensor, a non-return valve and a diaphragm tank. The non-return valve must always be installed Caution before the pressure sensor. See figs and 33.
  • Page 28 Diaphragm tank volume Analog input 1, 2 and 3, Function The stop function requires a diaphragm tank of a certain minimum size. Set the size of the installed tank in this display. In order to reduce the number of start/stops per hour or to reduce the ∆H, a larger tank can be installed.
  • Page 29 Analog input 1, 2 and 3, Measured parameter Analog input 1, 2 and 3 The analog inputs can be set to these parameters: Select the following: • Inlet pressure • Signal type (0.5 - 3.5 V, 0-5 V, 0-10 V, 0-20 mA or 4-20 mA). •...
  • Page 30 The number of available displays depends on the pump type. See Pt100/1000 input 1 and 2, Function below. CRE, CRIE, Function (terminal) CRNE, CRKE, SPKE, MTRE Pt100/1000 input 1, Measured ● parameter (17 and 18) Pt100/1000 input 2, Measured ● parameter (19 and 18) LiqTec function The Pt100/1000 inputs can be set to these functions:...
  • Page 31 Operating range Motor bearing monitoring The motor bearing monitoring function can be set to these values: Set the operating range as follows: • Active • Set the min. speed within the range from fixed min. speed to user-set max. speed. •...

  • Page 32: Grundfos Go Remote

    Shows the primary status value. 10.4.1 Communication value When the Grundfos GO Remote communicates with the pump, Secondary status Shows the secondary status the indicator light in the middle of the Grundfos Eye will flash value value. green. See section 14. Grundfos Eye.

  • Page 33: External Setpoint Signal

    = (setpoint - sensor ) x % sensor external setpoint + setpoint = (50 - 0) x 80 % + 0 = 40 psi (Analog input 2) Terminals 7 and 23. External setpoint function to be set as follows: (Grundfos GO).

  • Page 34: Constant-Curve Operation

    Example: At a set setpoint of 65 % of n and an external max. setpoint of 70 %, the actual setpoint is 0.70 x (65 - 12) + 12 = 49 (Analog input 2) Terminals 7 and 23. External setpoint function to be set as follows: (Grundfos GO).

  • Page 35: Bus Signal

    Start Max. speed Min. speed Min. speed Start Start * If the bus communication is interrupted, the motor will resume its previous operating mode, for example "Stop", selected with the R100, Grundfos GO Remote or on the motor control panel.

  • Page 36: Grundfos Eye

    14. Grundfos Eye The operating condition of the motor is indicated by the Grundfos Eye on the motor control panel. See fig. 39, pos. A. Fig. 39 Grundfos Eye Grundfos Eye Indication Description Power off. No lights on. Motor not running.

  • Page 37: Signal Relays

    The signal outputs can be set to "Operation", "Running", "Ready", "Alarm" and "Warning". The functions of the two signal relays appear from the table below: Contact position for signal relays when activated Operating Description Grundfos Eye mode Operation Running Ready Alarm Warning Power off.

  • Page 38: Megging

    16. Megging 19. Inputs/outputs Ground reference (GND) Megging of an installation incorporating MGE All voltages refer to GND Caution motors is not allowed, as the built-in electronics All currents return to GND. may be damaged. Absolute maximum voltage and current limits 17.

  • Page 39: Other Technical Data

    Use Grundfos LiqTec sensor only. 1-phase 3-phase [min Screened cable: 28-16 AWG / 0.5 - 1.5 mm motors motors Grundfos Digital Sensor input and output (GDS) 1500 2000 Use Grundfos Digital Sensor only. 2000 Power supplies (+5 V, +24 V) 3000 0.25 to...

  • Page 40: Disposal

    This product or parts of it must be disposed of in an environmentally sound way: 1. Use the public or private waste collection service. 2. If this is not possible, contact the nearest Grundfos company or service workshop. The waste battery should be disposed of through the national collective schemes.
  • Page 41 • This device must accept any interference, including interference that may cause undesired operation of the device. 1.3 Identification numbers For USA Grundfos Holding A/S Contains FCC ID: OG3-RADIOM01-2G4. Pour le Canada Grundfos Holding A/S Model: RADIOMODULE 2G4 Contains IC: 10447A-RA2G4M01.
  • Page 43 U.S.A. Canada Mexico GRUNDFOS Pumps Corporation GRUNDFOS Canada Inc. Bombas GRUNDFOS de México S.A. de C.V. 17100 West 118th Terrace 2941 Brighton Road Boulevard TLC No. 15 Olathe, Kansas 66061 Oakville, Ontario Parque Industrial Stiva Aeropuerto Phone: +1-913-227-3400 L6H 6C9 Apodaca, N.L.
  • Page 44 98566351 0814 ECM: 1140852 www.grundfos.com www.grundfos.us...

This manual is also suitable for:

Crie seriesCrne seriesSpke seriesMtre seriesCrke seriesCme series

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