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WEG CFW11 Applications Manual
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WEG CFW11 Applications Manual

WEG CFW11 Applications Manual

Solar pump drive
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Motors | Automation | Energy | Transmission & Distribution | Coatings
SOLAR PUMP DRIVE
CFW11
Application Manual
Language: English
Document: 10009999812 / 00

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Summary of Contents for WEG CFW11

  • Page 1 Motors | Automation | Energy | Transmission & Distribution | Coatings SOLAR PUMP DRIVE CFW11 Application Manual Language: English Document: 10009999812 / 00...
  • Page 2 Application Manual Solar Pump Drive Series: CFW11 Language: English Document Number: 10009999812 / 00 Publication Date: 08/2022...
  • Page 3 1.2 SAFETY WARNINGS IN THIS PRODUCT ..................9 1.3 PRELIMINARY RECOMMENDATIONS....................9 2 PHOTOVOLTAIC WATER PUMPING SYSTEM ........11 2.1 OVERVIEW OF THE CFW11 IN PHOTOVOLTAIC SYSTEMS ............11 2.2 GENERAL CHARACTERISTICS OF THE SOLAR PUMP ..............11 3 INSTALLATION ..................13 3.1 SIZING OF PHOTOVOLTAICS SOLAR MODULES .................

  • Page 4: Table Of Contents

    Contents 5.4 CONTROL SETPOINT ........................30 5.4.1 Reset of P1014 and P1015 ......................30 5.5 HMI MONITORING ..........................31 5.6 READING PARAMETERS ........................ 31 6 POWER UP AND START UP ..............33 Solar Pump Drive | 4...
  • Page 5 This manual provides the necessary information for the configuration of Solar Pump Drive application developed with the CFW11 inverter SoftPLC function. This application manual must be used together with the CFW11 user’s manual, the SoftPLC function manual and the WLP software manual.
  • Page 6 Quick Parameter Reference, Faults and Alarms QUICK PARAMETER REFERENCE Application Default User Parameter Description Adjustable Range Prop. Groups Page 60 Hz (50 Hz) Setting P0100 Acceleration Time 0.1 to 999.0 s 20.0 s 04, 20 P0101 Deceleration Time 0.1 to 999.0 s 20.0 s 04, 20 P0133...
  • Page 7 Quick Parameter Reference, Faults and Alarms Application Default User Parameter Description Adjustable Range Prop. Groups Page 60 Hz (50 Hz) Setting P1001 Command for SoftPLC 0 to 2 1 = Run Program Solar Pump Drive Application P1010 0.00 to 10.00 Version P1011 Current Tracking Setpoint...
  • Page 8 Quick Parameter Reference, Faults and Alarms FAULTS AND ALARMS Fault / Alarm Description Possible Causes F021: Undervoltage fault on the intermediate circuit. The input voltage is too low and the DC link voltage Undervoltage on the DC Link dropped below the minimum permitted value (monitor the P0004 parameter value): Ud <...
  • Page 9 Safety Instructions 1 SAFETY INSTRUCTIONS This manual contains the information necessary for the correct use of the frequency inverter CFW11 applied to photovoltaic systems for water pumping. It was developed to be operated by people with proper technical training or qualification to handle this kind of equipment.
  • Page 10 For the purposes of this manual, qualified persons are those trained and are therefore suitable for: 1. Install, ground, energize and operate the CFW11 in accordance with these manual and legal safety procedures. 2. Wear protective equipment in accordance with established local standards.
  • Page 11 2.2 GENERAL CHARACTERISTICS OF THE SOLAR PUMP The main characteristic of the Solar Pump Drive developed for the CFW11 inverter SoftPLC function is the control of one pump using a frequency inverter supplied by a photovoltaic system, thus allowing control of the speed of the pump.
  • Page 12 ■ Counter hours of operation and energy produced by the solar modules and consumed by the pump. NOTE! For applications where the cable between motor and inverter is greater than 100 meters, consult the WEG for sizing. Solar Pump Drive | 12...
  • Page 13 The frequency inverter operates with undervoltage and overvoltage protection, so that if the voltage reaches these limit values, the inverter will interrupt its operation. Table 3.1 shows the inverter operating voltage information, as well as the overvoltage and undervoltage limits. Table 3.1 – Voltage levels of the CFW11 400-415 440-460...
  • Page 14 Installation To facilitate the understanding of sizing, we use the following system as an example: Figure 3.1 – Example of a photovoltaic pumping system For this example, based on desired flow a motor pump of 3 CV was selected as a reference, the sizing of the system's number of modules follows the equations: MOTORPUMP SIZING CALCULATION OF DAILY HYDRAULIC ENERGY...
  • Page 15 = 376.7 Vdc). ������ NOTE! The dimensioning values are according to the table 3.1 (within the limits of CFW11). By associating eight solar modules in series, we are inserting steps of 2760 W . To meet the application needs 5.24kW , another set of eight modules will be associated in parallel, totaling 5.52kW...
  • Page 16 “Solar Pump Drive Installation Guide” 3.2.1 T4 Model Frame A to D For CFW11 frequency inverters from 380 to 480 V, model T4 Frame A to D, the following connection is recommended: Figure 3.3 – Connection diagram of the photovoltaic water pumping system for CFW11 T4 NOTE! Take care to don't reverse the positive and negative voltage connections from the solar modules.
  • Page 17 Installation 3.2.2 T4 Model Frame E and F For CFW11 frequency inverters from 380 to 480 V, model T4 Frame E and F, the following connection is recommended: Figure 3.4 – Connection diagram of the solar water pumping system for CFW11 T4 Table 3.4 –...
  • Page 18 Installation 3.2.3 T4 Model with Hybrid Power For CFW11 frequency inverters from 380 to 480 V, models T4, and that require hybrid power (photovoltaic panels + generator set/external power source) the following connection is recommended: Figure 3.5 – Connection diagram of the solar water pumping system for CFW11 T4 with Hybrid Power NOTE! Take care to don't reverse the positive and negative voltage connections from the solar modules.
  • Page 19 Control Method by Maximum Power Point Tracking 4 CONTROL METHOD BY MAXIMUM POWER POINT TRACKING The strategy of control method of variable reference is constantly tracking the maximum power point of the system (MPPT). The maximum power point of a solar module changes according to the solar radiance incident on the solar cell, as well as the temperature, wind velocity, inclination of the solar photovoltaic module, passing of clouds, thus generating the need of the constant search for maximum power of the system.
  • Page 20 Parameters Description 5 PARAMETERS DESCRIPTION The CFW11 inverter parameters (P0000 to P0999) and the SoftPLC function parameters (P1000 to P1059) for the Solar Pump Drive application will be presented next. NOTE! The Solar Pump Drive application only works on CFW11 inverter with firmware version over V6.10 So, upgrading the CFW11 inverter firmware to the working of this application is required.
  • Page 21 Parameters Description 5.1.2 Voltage PID Controller This group of parameters allows the user to configure the PID controller gains for the DC voltage control supplied by the photovoltaic modules. The PID controller always will attempt to search the work point defined by Tracking Setpoint and for this will act on the output frequency of the motor.
  • Page 22 Parameters Description P1038 – Cloud/Load Controller Activation Level Adjustable 0.0 to 100.0 Application Default Setting: 1.0 % Range: Properties: Access groups via HMI: SPLC Description: This parameter defines the threshold percentage error value between the voltage SP and the DC Link voltage for activating the Cloud/Load Controller.
  • Page 23 =0.3A, V =21V, I =0.39A) to be connected to the analog input 2 (AI2) of the CFW11 using a signal conditioning device (Solar Detector), the objective is to inform the instantaneous solar irradiation. Figure 5.2 – Solar irradiation detection using the Solar Detector.
  • Page 24 Parameters Description P0236 – AI2 Signal Function Adjustable 0 to 7 -> 5 = No Function Application Default Setting: Range: -> 6 = No Function (Solar Detection) -> 7 = PLC Use (Pressure SP) Properties: Access groups via HMI: Description: This parameter defines the function of the analogic Input AI2.
  • Page 25 Parameters Description of the external power supply requires the presence of minimum solar radiation that allows the energization of the equipment. With the input DI2 configured to 21 when the input is TRUE it means that the external source is supplying the inverter, and it’s expected that the power supply is enou h to run the system in nominal conditions.
  • Page 26 Parameters Description Table 5.2 – Pressure Control Mode Options P1030 Description The system tries to control the motor speed accordingly to the Manual Speed Setpoint (P1051 or AI2). With limited radiation, the system controls the DC bus voltage, causing the pump to run at maximum speed possible to reach the Manual Speed Setpoint.
  • Page 27 P1035 in order for sleep mode to be activated and the pump to be stopped. NOTE! The alarm message "A750: Sleep Mode Active" will be generated on the HMI of the CFW11 inverter to alert that the Solar Pump Drive is in sleep mode.
  • Page 28 Parameters Description 5.3.1 Dry Pump This group of parameters allows the user to configure dry pump detection, to protect the inverter driven pump. P1040 – Time Delay for Dry Pump Fault (F765) Adjustable 0 to 3600 s Application Default Setting: Range: Properties: Access groups via HMI:...
  • Page 29 Parameters Description 5.3.2 Minimum Output Pressure This parameter group allows the user to configure the minimum output pressure detection for pump protection activated by the CFW11 frequency inverter. P1044 – Minimum Output Pressure Adjustable 0.0 to 300.0 Application Default Setting: 0.0...

  • Page 30: Control Setpoint

    1 = Reset Running Time (P1014) 2 = Reset Total Energy (P1015) Properties: Access groups via HMI: SPLC Description: This parameter allows to reset the parameters P1014 (Running Time of the CFW11) and P1015 (Total Energy kWh counter). Solar Pump Drive | 30...

  • Page 31: Hmi Monitoring

    P0210 – Reference Engineering Unit 2 P0211 – Reference Engineering Unit 3 P0212 – Reference Decimal Place NOTE! Refer to the CFW11 frequency inverter programming manual for further information about the HMI parameters. 5.6 READING PARAMETERS P1010 – Solar Pump Drive Application Version Adjustable 0.00 to 10.00...
  • Page 32 Range: Properties: Access groups via HMI: SPLC Description: This parameter displays the kWh value produced by the CFW11 and consumed by the pump. P1016 – Remaining Time to a New Start Attempt Adjustable 0 to 3200 s Application Default Setting:...

  • Page 33: Power Up And Start Up

    (clockwise or counter-clockwise) will not cause damage to the machine or risk of accidents; 4. Energize input; 5. Enter the general parameters in the CFW11 (Quick Parameter Reference, pag. 6), report according to the technical characteristics of the water pump and the inverter; 6. Switch to remote mode, and restart the CFW11;...