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Grundfos CU 202 Installation And Operating Instructions Manual
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Grundfos CU 202 Installation And Operating Instructions Manual

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GRUNDFOS INSTRUCTIONS
CU 202
Installation and operating instructions
CU 202
Installation and operating instructions
(all available languages)
http://net.grundfos.com/qr/i/92852547

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Summary of Contents for Grundfos CU 202

  • Page 1 GRUNDFOS INSTRUCTIONS CU 202 Installation and operating instructions CU 202 Installation and operating instructions (all available languages) http://net.grundfos.com/qr/i/92852547...
  • Page 3 CU 202 English (GB) Installation and operating instructions ........4 Limited consumer warranty .

  • Page 4: Table Of Contents

    General information ... . . 5 Grundfos Eye ....31 Hazard statements ....5 Notes .

  • Page 5: General Information

    2.1 Product description The symbols and hazard statements below may The controller operates according to the water level appear in Grundfos installation and operating measured by the float switch or a level sensor in the instructions, safety instructions and service filling application.

  • Page 6: Intended Use

    Using this principle means that no additional cables are required The CU 202 input signals can both be analog sensors to the pump. or digital switches. Data is communicated via a high-frequency signal...

  • Page 7: Receiving The Product

    On/off button ‐ Do not install damaged product. Sensor signal 2. If parts are damaged or missing, contact the local Power supply Grundfos sales company immediately. Communication signals 3.2 Scope of delivery Grundfos GO The box contains the following items: •...

  • Page 8: Installation Requirements

    4. Installation requirements Pos. Description Product name WARNING Electric shock Version number Death or serious personal injury Supply voltage ‐ Switch off the power supply before Product number and Serial number starting any work on the product. Make sure that the power supply cannot be Production code (year and week) switched on unintentionally.

  • Page 9: Security

    Changes or modifications made to this equipment not expressly approved by Grundfos may void the FCC authorization to operate this equipment. 4.2.3 EMC statements for USA Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.

  • Page 10: Mechanical Installation

    5. Mechanical installation Related information 5.2 Disconnecting the front cover 5.1 Removing the front cover 5.3.2 Wall mounting The front cover must be removed to make any 6.5 Connecting a level sensor connections. 5.2 Disconnecting the front cover Use an antistatic service kit when handling electronic components.

  • Page 11: Installing The Controller

    Related information 5.3.1 Angle plate mounting The angle plate has two mounting holes. 5.1 Removing the front cover 5.3.2 Wall mounting Use one of the holes of the angle plate to 5.3 Installing the controller mount the controller. The controller is designed for: •...
  • Page 12 5.3.2 Wall mounting The box has six mounting holes (∅4). 1. Loosen the screws and remove the front cover. Be careful not to damage the cable connecting the front cover and the back cover. 2. Remove the angle plate from the controller by removing the six screws inside the box that hold the angle plate.

  • Page 13: Mounting The Rubber Seals

    CU 202 Cable gland type Torque [Nm (ft-lb)] 2 × PG21 2.5 (1.84) 2 × PG11 CU 202 UL Cable gland type Torque [Nm (ft-lb)] 2 × PG11 2.5 (1.84) 2 × 1/2 inch conduit hubs...

  • Page 14: Accessories In The Cable Gland Set

    5.5 Accessories in the cable gland set Accessory CU 202 CU 202 UL Description Reduction sealing If the outer diameter of a round power or motor cable is in the range up to 7 to 10 mm (0.27 to 0.39 inch), put the ●...

  • Page 15: Electrical Connection

    (0.4 - 0.7 inch) switched on unintentionally. ‐ Disconnect the switch between the PV Cable diameters for CU 202 UL panels and the controller. Cable type Cable diameter DANGER 5-10 mm Through the PG11 cable...

  • Page 16: Protection Of Controller And Supply Cables

    6.2 Protection of controller and supply DANGER cables Electric shock - VAC, VDC Death or serious personal injury To protect the controller and power cables against ‐ Switch off the power supply before short-circuit and overload, use the following: starting any work on the product. Make •...
  • Page 17 4. Connect the power cables and pump 5. Tighten the terminal screws to the correct torque. cables according to the relevant electrical See the table below. diagram. Terminal block Torque [Nm (ft-lb)] All cable glands must be mounted and plugged to ensure the correct IP Pump supply 1.2 - 1.5 (0.88 - 1.1) protection level.

  • Page 18: Controller Backup Power

    An additional power supply can be connected to CU 202 as a backup for the normal power supply. With the backup power supply, the CU 202 can continue monitoring the sensors despite interruptions in the normal power supply. Nominal voltage 24 VDC (22 - 28.8 VDC)

  • Page 19: Connecting A Level Sensor

    6.5 Connecting a level sensor • For a not shielded wire, attach it directly to the terminals, the earth wire can be connected to You can either connect a digital level switch, such as the metal earth bracket. a float switch, or an analog level sensor. 1.

  • Page 20: Input And Output

    Backup, terminals 14 and 15 For monitoring purposes, you can connect a 24 V 120Ω Open backup for the CU 202. This backup is not able to POWER PUMP power the pump. Related information 6.4 Controller backup power 6.5 Connecting a level sensor...

  • Page 21: Starting Up The Product

    The blue LED above the connect icon is flashing until your device is connected. b. Press CONNECT in the top bar in Grundfos GO next to the message CU 202 wants to connect. 5. To start the connection from Grundfos GO: a.

  • Page 22: Control Modes

    Pump out 1. Go to Settings > Application settings > Control • Pump monitoring mode. You can set the control mode with Grundfos GO. 2. Select Level control Filling. Related information 3. Press Edit to set the parameters. 10.3 Application settings 4.
  • Page 23 13. Press Save to save your settings. High level 14. Optionally, set the following parameters in Stop level Application settings menu: Start level • Stop delay CU 202 Default value: Disabled. • Signal detection time SQFlex pump Default value: 0 s. Analog sensor Related information In the filling application, the pump is installed in a tank 10.3 Application settings...

  • Page 24: Level Control - Emptying

    8.2.1 Level control Emptying (1 Digital input) The pump stops when the water level is lowered to Stop level. Setting Level control Emptying (1 Digital input) with Grundfos GO: 1. Go to Settings > Application settings > Control mode. 2. Select Level control Emptying.
  • Page 25 High level Default value: 2 m. Start level 13. Press Save to save your settings. Stop level 14. Optionally, set the following parameters in Application settings menu: CU 202 • Stop delay SQFlex pump Default value: Disabled. Analog sensor •...

  • Page 26: Pressure Control (Digital Input)

    Stop Pressure. Maximum pressure safety limit is the maximum allowed pressure for the system. It can be set through either the operating panel or Grundfos GO to avoid unintentionally activating, for example, pressure relief valves or similar equipment. Setting Pressure control with Grundfos GO: 1.

  • Page 27: Pressure Control (Analog Input)

    Maximum pressure safety limit is the maximum allowed pressure for the system. It can be set through either the operating panel or Grundfos GO to avoid unintentionally activating, for example, pressure relief valves or similar equipment. Setting Pressure control with Grundfos GO: 1.

  • Page 28: Pump Out

    Description • Stop delay Default value: Disabled. Open discharge • Signal detection time CU 202 Default value: 0 s. SQFlex pump • Unit configuration Default value: bar. In the Pump out control mode, the pump is installed in a well. In case of newly drilled wells, clean it by...

  • Page 29: Pump Monitoring

    Setting Pump out with Grundfos GO: Pos. Description 1. Go to Settings > Application settings > Control Open discharge mode. CU 202 2. Select Pump out. SQFlex pump 3. Press Edit to set the parameters. In the Pump monitoring control mode, the pump is 4.

  • Page 30: Control Functions

    Press this button to stop the pump. OK button: • Press this button to save changed values. Connect symbol: If the symbol is lit, the controller is connected to Grundfos GO. Connect button: • Press this button to connect the controller to Grundfos GO via Bluetooth.

  • Page 31: Grundfos Eye

    9.2 Grundfos Eye Alarm and Indicator light warning Indication Description symbol Power off No lights are on. The pump is not running. Two opposite green lights are Power on running in the pumping The pump is running. direction. Power on Two opposite green lights are permanently on.

  • Page 32: Setting The Product

    10. Setting the product 10.1 Setting by means of Grundfos GO Make sure that all settings are entered according to the pump and system requirements to avoid malfunction. 10.2 Menu overview Default control mode: Filling. View all metrics Speed (pump) Speed of the pump in rpm.
  • Page 33 Settings Application settings Product name Control mode Stop delay 10.3 Application settings Signal detection time Configurable I/O 1 Configurable I/O 2 Pump settings Maximum speed 10.4 Pump settings Minimum speed Dry run reset time Special functions Power-on delay Limit exceeded 10.5 Special functions SQFlex battery operation Controller backup power...

  • Page 34: Application Settings

    10.3 Application settings The parameters in the Application settings menu depend on the control mode selected. See the table below which parameters are available for each control mode. Control mode Level control Level control Filling Pressure control Parameter Emptying Pump Pump monitoring 1 Digital...
  • Page 35 If Stop Pressure is not reached within Max run time, the pump will stop. To start the 8. Control modes pump, you need to reset Grundfos GO or the 8.1.1 Level control Filling (1 Digital input) operating panel manually. 8.1.2 Level control Filling (Analog input) Enable the function.

  • Page 36: Pump Settings

    10.4 Pump settings • SQFlex battery operation You can set this parameter when the pump is 1. Go to Settings > Pump settings. powered by a battery. The function will stop the 2. Select the parameter you want to set: pump if the voltage is too low, and then will wait until the voltage is raised above the Cut in •...

  • Page 37: Communication

    Then press Share or Intercommunications bus, is a fieldbus Delete. developed by Grundfos to meet the need for data transfer in all typical Grundfos motor or pump applications. Grundfos devices with Deleting a product setting file is GENIbus can be wired together in networks permanent and cannot be undone.
  • Page 38 Go to step 3 for more information about this internet. option. • Lock settings (PIN code required) 3. Connect your product to Grundfos GO if it is not already connected. Go to step 4 for more information about this option. The app automatically checks if the product has the latest software installed.

  • Page 39: Service

    4. Insert a new battery of the correct type as it is New features and functions can be made available shown on the figure below. during the product's life cycle. 1. Contact Grundfos to get your product software updated. 11.2 Replacing the battery CAUTION...

  • Page 40: Fault Finding

    12. Fault finding WARNING Electric shock Death or serious personal injury ‐ Switch off the power supply before starting any work on the product. Make sure that the power supply cannot be switched on unintentionally. Fault finding and fault correction must be carried out by qualified persons. 12.1 Alarm and warning codes 12.1.1 Code 3 (External alarm from DI) Cause...
  • Page 41 Subcode: 1009 • Check and adjust the start or the stop level settings, or change the sensor setup with Grundfos GO. Analog sensor only: The start or the stop level settings are invalid or missing. Subcode: 1010 •...
  • Page 42 12.1.6 Code 32 (Overvoltage) Cause Remedy Subcode: 1001 • Measure voltage and ensure it is within the specifications of the pump. Check the motor Inrush: The supply voltage has exceeded the nameplate. maximum allowed value. Subcode: 1002 • Measure voltage and ensure it is within the specifications of the pump.
  • Page 43 12.1.10 Code 51 (Blocked motor/pump) Cause Remedy Subcode: 1001 • Dismantle the pump by removing the pump head, and remove any blockage or impurities preventing The pump is blocked. the pump from rotating. The pump cannot rotate due to a blockage. •...
  • Page 44 12.1.11 Code 57 (Dry running) Cause Remedy Subcode: 1002 • Adjust the maximum speed of the pump. Power limit: The dry-run power limit function detects • Replace the pump with a correctly dimensioned variant. low water level in the pit and the pump stops due to the dry running function.
  • Page 45 Remedy Subcode: 1001 • Turn off power for 1 minute and then turn it on. • If the error persists, contact Grundfos. Insulation displacement contact (IDC): Hardware shuts down because of detecting incorrect software or offset error. Subcode: 1002 •...
  • Page 46 Check the input. The configured parameter for limit 1 has exceeded its • Change the configuration by adjusting the limits set limit set by the user. in Grundfos GO. Related information 10.5 Special functions 12.1.18 Code 133 (Limit 2 exceeded) Cause...
  • Page 47 Push the ON/OFF button to reset the alarm. level cannot be reached within the maximum allowed runtime. • If the error persists, contact Grundfos. Pressure build up failed within the set time. Related information 8.3 Pressure control (Digital input) 8.4 Pressure control (Analog input) 12.1.24 Code 205 (Level float switch sequence inconsistency)
  • Page 48 12.1.25 Code 210 (Overpressure) Cause Remedy The registered pressure is 1 bar above the setpoint. • Reduce the cut-in speed to avoid overshoot at The pump has been stopped to avoid causing startup. damage to the system. • Check if any other equipment increases the pressure such as a water heater, and so on.

  • Page 49: Decommissioning

    13. Decommissioning Pulse input 10 kΩ pull-up against 24 VDC CAUTION Cyber security hazard Highest frequency 10 Hz, 50 % duty-cycle Minor or moderate personal injury ‐ Delete all information before Digital output decommissioning. Open collector 14. Technical data Current sink capability: maximum 75 mA, no sourcing 14.1 Electrical data Overcurrent protected...

  • Page 50: Environmental Data

    +60 °C (+140 °F) 14.3 Environmental data Diameter of the cable gland holes, CU 202 Enclosure class CU 202: IP55. CU 202 UL: Type 1 / Type 3R raintight. Pos. Description ∅ 28.3 mm (1.11 in) Materials The box is made of black PPO.

  • Page 51: Customer Pulse Survey

    The separate collection and recycling of such products will help protect the environment and human health. See also end-of-life information at www.grundfos.com/product-recycling. 16. Customer pulse survey Scan the QR code or click the link below to provide feedback about the product.

  • Page 52: Limited Consumer Warranty

    For New Jersey there is no prohibition on returning a defective product at a purchaser’s cost. If Grundfos is required by applicable State law to pay for the cost of shipment under applicable State law, then a purchaser should contact a Grundfos Authorized Service Partner to arrange for shipment.
  • Page 53 Garantías Magnusson-Moss y cualquier otra legislación federal y/o estatal aplicable. Para el caso de productos que no sean de consumo, consulte los términos de la garantía de Grundfos definidos en la cláusula 10 de los términos y condiciones de venta de productos y servicios de Grundfos para los EE. UU., disponibles https://www.grundfos.com/legal/grundfos-customer-terms/usa-grundfos-general-terms-for-sales-of-products- and-services.
  • Page 54 Grundfos no será responsable de ningún daño indirecto o consecuente en relación con un producto en la medida en la que lo permita la legislación aplicable. Para los residentes de Nueva Jersey, esta limitación resulta permisible, si bien debe tenerse en cuenta que algunos estados no permiten limitaciones en cuanto a...

  • Page 55: Limited Manufacturer's Warranty

    The sole and exclusive remedy under this Limited Manufacturer’s Warranty is the repair or, at the discretion of Grundfos, the replacement of the Product, as set out below. Defects or damages are not covered by the Limited Manufacturer’s Warranty if they are due to: •...
  • Page 56 If Grundfos is required by applicable provincial or territorial law to pay for the cost of transportation, then the Purchaser should contact Grundfos Service Partner to arrange for shipment. The Purchaser also needs to promptly respond to Grundfos as to any inquiries regarding a warranty claim.

  • Page 57: Garantie Limitée Du Fabricant

    Produit (« Période de garantie »). Lors de l'achat d'un Produit Grundfos en ligne, il est important de vérifier la date de fabrication et la durée de la garantie auprès du vendeur, car le Produit pourrait ne plus être couvert par cette garantie limitée du fabricant.
  • Page 58 L'Acheteur doit également répondre rapidement à Grundfos pour toute demande concernant une réclamation au titre de la garantie. Sauf demande de Grundfos, le Produit ne doit pas être démonté avant d'être remis en état. Tout manquement à ces dispositions entraînera l'annulation de la présente garantie limitée du fabricant.
  • Page 59 Argentina Columbia 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 60 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 61 92852547 07.2024 ECM: 1392075 www.grundfos.com...

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