Grundfos CU 300 Installation And Operating Instructions Manual
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Grundfos CU 300 Installation And Operating Instructions Manual

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CU 300
Installation and operating instructions
No contact
Overvoltage
Undervoltage
Dry running
Speed reduction
Overtemperature
Overload
Sensor alarm
GRUNDFOS INSTRUCTIONS
For Sales & Service Contact
2650 E. 40th Ave. • Denver, CO 80205
Phone 303-320-4764 • Fax 303-322-7242
1-800-833-7958
www.geotechenv.com

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Summary of Contents for Grundfos CU 300

  • Page 1: Sensor

    GRUNDFOS INSTRUCTIONS CU 300 For Sales & Service Contact Installation and operating instructions 2650 E. 40th Ave. • Denver, CO 80205 Phone 303-320-4764 • Fax 303-322-7242 1-800-833-7958 www.geotechenv.com No contact Overvoltage Undervoltage Dry running Speed reduction Overtemperature Overload Sensor alarm...

  • Page 2: Declaration Of Conformity

    Declaration of Conformity We Grundfos declare under our sole responsibility that the product CU 300, to which this declaration relates, is in conformity with the Council Directives on the approximation of the laws of the EC Member States relating to —...

  • Page 3: Table Of Contents

    - 0 to 10 bar 7.5.4 Potentiometer SPP 1 Description Settings Function 7.6.1 Required R100 settings Positioning the pressure sensor CU 300 connected to water meter 30 System sizing Description Installation Installation Location Location Mounting the CU 300 Mounting the CU 300...
  • Page 4 12.4.9 Button on CU 300 CU 300 connected to RS-232, 12.4.10 Number RS-485 Technical data 10.1 Description Disposal 10.2 CU 300 connected to a PC directly 10.3 Installation 10.4 Location 10.5 Mounting the CU 300 10.6 Electrical connection 10.6.1 Mains supply 10.6.2 Pump supply...

  • Page 5: General

    1.2 On/Off button Before beginning installation procedures, these installation and operating instruc- By means of the On/Off button on the CU 300, it is tions should be studied carefully. The in- possible to stallation and operation should also be in •...

  • Page 6: Cu 300 As An Alarm Unit

    Fig. 2 shows an example of an installation with the CU 300 as an alarm unit. Fig. 2 The CU 300 is supplied with a set of gaskets for the Pg screwed connections. The gaskets are to be used for the connection of cables/wires to ensure tight connections (IP 55) and cable relief.

  • Page 7: Electrical Connection

    2.5 Electrical connection The supply voltage and frequency are marked on the nameplate. Make sure that the CU 300 is suitable for Never make any connections in the the electricity supply on which it will be used. CU 300 unit unless the electricity supply has been switched off.

  • Page 8: Description Of Dry-Running Protection

    If the pump power input falls below the dry-running dry-running protection function, the following R100 power limit set in the R100 display 12.4.6 Dry-run- settings must be made: ning stop, the pump will stop and the CU 300 will indicate the dry-running alarm. Display R100 setting 2.6.1 Function...

  • Page 9: Settings

    Fig. 6 For a detailed description of the R100 displays, see section 12. CU 300 with R100. Each individual dis- play has a number which refers to the section in which it is described in detail.

  • Page 10: Cu 300 With Constant Pressure

    The pressure is registered by means of the pressure to 0.5 bar below the pressure setting. sensor, which transmits a signal to the CU 300. The The pump will run until the pressure is 0.5 bar above CU 300 adjusts the pump performance accordingly the pressure set.

  • Page 11: Positioning The Pressure Sensor

    Fig. 9 3.3 Positioning the pressure sensor Pressure loss often causes inconvenience to the Pressure user. The CU 300 keeps the pressure constant in the Flow detection place where the pressure sensor is positioned, see fig. 11. Fig. 11 Shower...

  • Page 12: System Sizing

    Fig. 12 104.5 104.5 The CU 300 is supplied with a set of gaskets for the Pg screwed connections. The gaskets are to be used for the connection of cables/wires to ensure tight connections (IP 55) and cable relief.

  • Page 13: Electrical Connection

    3.8 Electrical connection The supply voltage and frequency are marked on the nameplate. Make sure that the CU 300 is suitable for Never make any connections in the the electricity supply on which it will be used. CU 300 unit unless the electricity supply has been switched off.

  • Page 14: Pump Supply

    For a detailed description of the R100 displays, see • l/pulse to “–” (not active). section 12. CU 300 with R100. Each individual dis- play has a number which refers to the section in which it is described in detail.

  • Page 15: Cu 300 With Constant Pressure Control - 0 To 10 Bar

    A = Required pressure 4.3 Positioning the pressure sensor Pressure loss often causes inconvenience to the Pos. Description user. The CU 300 keeps the pressure constant in the place where the pressure sensor is positioned, see CU 300 fig. 16. Diaphragm tank Fig.

  • Page 16: System Sizing

    Fig. 17 104.5 104.5 The CU 300 is supplied with a set of gaskets for the Pg screwed connections. The gaskets are to be used for the connection of cables/wires to ensure tight connections (IP 55) and cable relief.

  • Page 17: Electrical Connection

    4.8 Electrical connection The supply voltage and frequency are marked on the nameplate. Make sure that the CU 300 is suitable for Never make any connections in the the electricity supply on which it will be used. CU 300 unit unless the electricity supply has been switched off.

  • Page 18: Pump Supply

    • l/pulse to “–” (not active). For a detailed description of the R100 displays, see section 12. CU 300 with R100. Each individual dis- play has a number which refers to the section in Set the desired head (m).

  • Page 19: Cu 300 With Constant Pressure Control - Two-Pump Operation

    0.5 bar. If the consumption exceeds the quantity the pump connected to the CU 300 (master) is able to de- liver, the pressure in the diaphragm tank will fall. The pump connected to the CU 300 (slave) will be started in the two following situations: 1.

  • Page 20: Positioning The Pressure Sensor

    Fig. 21 104.5 104.5 The CU 300 is supplied with a set of gaskets for the Pg screwed connections. The gaskets are to be used for the connection of cables/wires to ensure tight connections (IP 55) and cable relief.

  • Page 21: Electrical Connection

    5.8 Electrical connection The supply voltage and frequency are marked on the nameplate. Make sure that the CU 300 is suitable for Never make any connections in the the electricity supply on which it will be used. CU 300 unit unless the electricity supply has been switched off.

  • Page 22: Pump Supply

    5.8.5 Flow switch and pressure sensor 12.3.10 Digital in- Connect the flow switch and the pressure sensor to the CU 300 (A = master) as illustrated in fig. 22. • Type to “Start” and Flow switch: • l/pulse to “–” (not active).

  • Page 23: Cu 300 With Sensors

    6.1 General automatically “not active”. These settings are made in the R100 displays The CU 300 can be used in systems with 1 to 3 sen- 12.3.1 to 12.3.9. sors connected. Fig. 23 shows an example of an installation incorpo- 6.2 Sensor functioning...

  • Page 24: Installation

    • Filling means that the pump must start at a given The CU 300 is supplied with a set of gaskets for the minimum water level and stop at a given maxi- Pg screwed connections. mum water level, see fig. 26.

  • Page 25: Electrical Connection

    6.6 Electrical connection The supply voltage and frequency are marked on the nameplate. Make sure that the CU 300 is suitable for Never make any connections in the the electricity supply on which it will be used. CU 300 unit unless the electricity supply has been switched off.

  • Page 26: Pump Supply

    For a detailed description of the R100 displays, see Set the desired stop 12.3.9 Stop type section 12. CU 300 with R100. Each individual dis- type. play has a number which refers to the section in Example: which it is described in detail.

  • Page 27: Cu 300 Connected To Potentiometer

    Fig. 30 rating a potentiometer. Fig. 29 104.5 104.5 The CU 300 is supplied with a set of gaskets for the Pg screwed connections. Pos. Description The gaskets are to be used for the connection of cables/wires to ensure tight connections (IP 55) and CU 300 cable relief.

  • Page 28: Electrical Connection

    7.5 Electrical connection The supply voltage and frequency are marked on the nameplate. Make sure that the CU 300 is suitable for Never make any connections in the the electricity supply on which it will be used. CU 300 unit unless the electricity supply has been switched off.

  • Page 29: Pump Supply

    For a detailed description of the R100 displays, see leads of the pump. Each terminal can be connected section 12. CU 300 with R100. Each individual dis- to any of the two leads. play has a number which refers to the section in Connect the PE terminal to the green/yellow earth which it is described in detail.

  • Page 30: Cu 300 Connected To Water Meter

    Fig. 33 incorporating a water meter. Fig. 32 104.5 104.5 The CU 300 is supplied with a set of gaskets for the Pg screwed connections. The gaskets are to be used for the connection of Pos. Description cables/wires to ensure tight connections (IP 55) and CU 300 cable relief.

  • Page 31: Electrical Connection

    8.5 Electrical connection The supply voltage and frequency are marked on the nameplate. Make sure that the CU 300 is suitable for Never make any connections in the the electricity supply on which it will be used. CU 300 unit unless the electricity supply has been switched off.

  • Page 32: Water Meter (Pulse Flow Meter)

    For a detailed description of the R100 displays, see section 12. CU 300 with R100. Each individual dis- play has a number which refers to the section in which it is described in detail.

  • Page 33: Constant Water Level

    The CU 300 controls the pump speed and conse- quently adjusts the pump performance to the bore- hole yield. The CU 300 is supplied with a set of gaskets for the 1. When the water level is much higher than the de- Pg screwed connections.

  • Page 34: Electrical Connection

    9.6 Electrical connection The supply voltage and frequency are marked on the nameplate. Make sure that the CU 300 is suitable for Never make any connections in the the electricity supply on which it will be used. CU 300 unit unless the electricity supply has been switched off.

  • Page 35: Pump Supply

    For a detailed description of the R100 displays, see leads of the pump. Each terminal can be connected section 12. CU 300 with R100. Each individual dis- to any of the two leads. play has a number which refers to the section in Connect the PE terminal to the green/yellow earth which it is described in detail.

  • Page 36: Cu 300 Connected To

    • connection to the Grundfos G100 gateway for Fig. 39 communication over long distances, e.g. via radio. 10.2 CU 300 connected to a PC directly Fig. 38 shows an example of an installation which is connected to a PC directly via the RS-232 input.

  • Page 37: Installation

    104.5 Fig. 40 G 100 GATEWAY The CU 300 is supplied with a set of gaskets for the Pg screwed connections. The gaskets are to be used for the connection of cables/wires to ensure tight connections (IP 55) and cable relief.

  • Page 38: Electrical Connection

    10.6 Electrical connection The supply voltage and frequency are marked on the nameplate. Make sure that the CU 300 is suitable for Never make any connections in the the electricity supply on which it will be used. CU 300 unit unless the electricity supply has been switched off.

  • Page 39: Alarm Signal Relay

    The RS-485 input, terminals A, Y (GND) and B, is for external bus communication. The PC Tool CU 300 is Windows95/NT-based soft- The communication is effected according to the ware, see the PC Tool CU 300 opening display in fig. Grundfos bus protocol, GENIbus, and is two-way communication. Fig. 43 The CU 300 can communicate with a PC with the PC Tool CU 300 installed.

  • Page 40: Alarm Functions

    11. Alarm functions Fig. 45 The alarm functions indicated by the eight red indica- tor lights on the CU 300 are described in the follow- No contact ing sections. Overvoltage 11.1 No contact Undervoltage The connection and/or communication between the Dry running CU 300 and the motor is not established.

  • Page 41: Dry Running

    Restarting: In fig. 48, the “Speed reduction” alarm was caused by undervoltage. When the supply voltage lies within the voltage range of the motor, the motor will restart automati- Fig. 48 cally. 11.4 Dry running No contact The purpose of the dry-running protection is to pro- Overvoltage tect the pump in case of insufficient water flow.

  • Page 42: Overload

    Fig. 49 Restarting: After 5 minutes (factory setting), or the period set by means of the R100 display 12.4.3 Automatic restart, No contact the motor will restart automatically. Overvoltage 11.8 Sensor alarm Undervoltage This alarm means that: Dry running • a connected sensor has detected that an alarm Speed reduction limit has been exceeded or Overtemperature...

  • Page 43: Cu 300 With R100

    The remote control R100 is used for wireless com- munication with the CU 300. The R100 communi- cates via infra-red light. During communication, there must be visual contact between the CU 300 and the R100, see fig. 52. Fig. 52...
  • Page 44 Fig. 53...
  • Page 46 = 680 W. • Motor type 1.1 to 1.73 kW, dry-running stop = 800 W. 12.4.7 Dry-running protection Active Motor 12.4.8 Maximum speed 10,700 min Motor 12.4.9 Button on CU 300 Active CU 300 12.4.10 Number – CU 300 and motor...

  • Page 47: Menu Operation

    12.1 Menu OPERATION Select one of the following operating modes: • Max. The OPERATION menu for the CU 300 offers the Pump operation is set to maximum speed, irre- possibility of setting and reading operating parame- spective of setpoint. The maximum speed is set in ters.

  • Page 48: Menu Status

    The operating mode was selected from one of the number. following: The sensor 2 signal has fallen • CU 300 (On/Off button on the CU 300). outside the measuring range • R100. set. Alarm, sensor 2 •...

  • Page 49: Temperature

    The value of number of starts is accumulated from the pump’s birth and it cannot be reset. The value is stored in the motor electronics, and it is kept even if the CU 300 is replaced. 12.2.7 Sensor 1 and sensor 2 The actual speed stated in min (rpm).

  • Page 50: Accumulated Flow And Energy Per M³

    12.3.3 Warning, sensor 1 12.3 Menu LIMITS The LIMITS menu for the CU 300 offers the possibil- ity of setting limit values for pump/motor and sensor operation. It is possible to set both stop, warning and alarm limits in this menu.

  • Page 51: Sensor

    12.3.5 Sensor 2 Set the maximum and minimum warning limits of sensor 2. Setting range/unit: • Maximum value: “–” (not active), possible settings according to the setting in display 12.3.5 Sensor 2. • Minimum value: “–” (not active), possible settings according to the setting in display 12.3.5 Sensor 2.

  • Page 52: Digital Input

    Usage: This function can be used e.g. if the pumped liquid contains a relatively high level of ochre. 12.4 Menu INSTALLATION The INSTALLATION menu for the CU 300 offers the possibility of configuring the CU 300, pump/motor and sensors. Factory settings are marked in bold-faced type Stop: under each individual display.

  • Page 53: External Setpoint

    If an SPP 1 potentiometer is connected, the internal in display 12.1.1 Setpoint (e.g. 10,700 min ) or voltage supply of the CU 300 is used to generate the controlled by means of a signal connected to sen- signal. sor input 2.

  • Page 54: Start Delay

    See section 2.8 Description of the dewatering func- tion. Operating indication: The dry-running alarm indication on the CU 300 is automatically disabled, when this display setting is made. When the setting “–” is selected, the dewatering function is disabled, and the dry-running alarm indi- The following settings are available: cation can be activated again.

  • Page 55: Maximum Speed

    (not active) is no longer available. In connection with bus communication, a number must be allocated to the CU 300 and the pump. If the CU 300 and the pump do not have the same number, the alarm “No contact” will be indicated.

  • Page 56: Technical Data

    0-24 VDC, 10 kΩ (via internal voltage supply). Maximum 95%. Screened cable is recommended. Materials Maximum cable length: 100 m. The CU 300 box is made of black PPO. Voltage signal: 0-10 VDC/2-10 VDC, R = 11 kΩ. EMC (Electromagnetic compatibility) Tolerance: ±3% at maximum voltage signal.

  • Page 57: Disposal

    2. In case such waste collection service does not exist or cannot handle the materials used in the product, please deliver the product or any haz- ardous materials from it to your nearest Grundfos company or service workshop. Subject to alterations.
  • Page 58 GRUNDFOS Gulf Distribution Co. Ltd. Poland P.O. Box 16768 Indonesia 22 Floor, Xin Hua Lian Building GRUNDFOS Pompy Sp. z o.o. Jebel Ali Free Zone PT GRUNDFOS Pompa 755-775 Huai Hai Rd, (M) ul. Klonowa 23 Dubai Jl. Rawa Sumur III, Blok III/CC-1 Shanghai 200020 Baranowo k.
  • Page 59 Being responsible is our foundation Thinking ahead makes it possible Innovation is the essence 96427972 1204 Repl. 96427972 0802 www.grundfos.com...

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