WEG CFW500 Applications Manual
Solar pump drive
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Also See for CFW500:
- User manual (185 pages) ,
- Installation, configuration and operations manual (32 pages) ,
- Installation and operation manual (25 pages)
Related Manuals for WEG CFW500
Summary of Contents for WEG CFW500
- Page 1 Motors | Automation | Energy | Transmission & Distribution | Coatings SOLAR PUMP DRIVE CFW500 Application Manual Language: English Document: 10005553220 / 00...
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Page 2: Publication Date
Application Manual Solar Pump Drive Series: CFW500 Language: English Document Number: 10005553220 / 00 Publication Date: 02/2018... -
Page 3: Table Of Contents
1.2 SAFETY WARNING IN THE PRODUCT ....................8 1.3 PRELIMINARY RECOMMENDATIONS ....................8 2 PHOTOVOLTAIC WATER PUMPING SYSTEM ........10 2.1 OVERVIEW OF THE CFW500 IN PHOTOVOLTAIC SYSTEMS ............10 2.2 GENERAL CHARACTERISTICS OF THE SOLAR PUMP ..............10 3 INSTALLATION ..................12 3.1 SIZING OF PHOTOVOLTAICS SOLAR MODULES ................ -
Page 4: About The Manual
This manual provides the necessary information for the configuration of Solar Pump Drive application developed with the CFW500 inverter SoftPLC function. This application manual must be used together with the CFW500 user’s manual, the SoftPLC function manual and the WLP software manual. -
Page 5: Quick Parameter Reference
Quick Parameter Reference, Faults and Alarms QUICK PARAMETER REFERENCE User Parameter Description Adjustable Range Factory Setting Properties Groups Page Setting P0100 Acceleration Time 0.1 to 999.0 s 5.0 s BASIC P0101 Deceleration Time 5.0 s BASIC 0.1 to 999.0 s P0133 Minimum Speed 30.0 Hz... - Page 6 P1012 Actual Pression Setpoint / Speed SPLC 0.0 to 300.0 [Eng. Un.1] P1013 Output Pressure 0.0 to 300.0 SPLC P1014 Operating Time CFW500 0 to 65535 h SPLC P1015 Counter kWh 0 to 65535 kWh SPLC P1019 Increment Rate MPPT...
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Page 7: Faults And Alarms
Quick Parameter Reference, Faults and Alarms FAULTS AND ALARMS Fault / Alarm Description Possible Causes F021: Undervoltage fault on the intermediate Wrong voltage supply; check if the data on the Undervoltage on the DC Link circuit. inverter label comply with the power supply and parameter P0296. -
Page 8: Safety Instructions
Safety Instructions 1 SAFETY INSTRUCTIONS This manual contains the information necessary for the correct use of the frequency inverter CFW500 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 9 For the purposes of this manual, qualified persons are those trained and are therefore suitable for: 1. Install, ground, energize and operate the CFW500 in accordance with these manual and legal safety procedures. 2. Wear protective equipment in accordance with established local standards.
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Page 10: Photovoltaic Water Pumping System
2.2 GENERAL CHARACTERISTICS OF THE SOLAR PUMP The main characteristic of the Solar Pump Drive developed for the CFW500 inverter SoftPLC function is the control of one pump using for this a frequency inverter using the power supply by a photovoltaic system, thus allowing control of the speed of the pump. - Page 11 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 | 11...
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Page 12: Installation
The frequency inverters operate 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 CFW500 CFW500 Power Supply Voltage... -
Page 13: Connections
Installation ■ CFW500 Monophasic/Three-Phase 220V; ■ 2CV Three-Phase Pump; ■ Solar modules model GCL-P6/72 from the manufacturer GCL. The photovoltaic solar panel model GCL-P6/72 of the manufacturer GCL has the following characteristics (STC): Table 3.2 – Technical characteristics of the Photovoltaic Solar Module Polycrystalline... -
Page 14: Frame A
Installation 3.2.1 Frame A For inverters CFW500 and Frame "A", models without access to the DC bus terminals, the following connection is recommended: Figure 3.2 – Connection diagram of the water pumping photovoltaic system for inverter frame A NOTE! Take care to don't reverse the positive and negative voltage connections from the solar modules. -
Page 15: Frames B, C, D And E
Installation 3.2.2 Frames B, C, D and E For CFW500 frequency inverters of frames B, C, D and E, models with access to the DC bus (Ud + and Ud-) the following connection is recommended. Figure 3.3 – Connection diagram of the water pumping photovoltaic system for inverter... -
Page 16: Frames B, C, D And E With Hybrid Power
3.2.3 Frames B, C, D and E with Hybrid Power For CFW500 frequency inverters of frames B, C, D and E, models with access to the DC bus (Ud + and Ud-) and require hybrid power, the following connection is recommended. -
Page 17: Control Method By Maximum Power Point Tracking
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 irradiance 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 18: Parameters Description
Parameters Description 5 PARAMETERS DESCRIPTION The CFW500 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 CFW-11 inverter with firmware higher than V2.02. -
Page 19: Voltage Setpoint Limits
Parameters Description Description: This parameter defines the value of open circuit voltage of the installed PV panels. This data will appear on each of the installed photovoltaic panels and will be named Voc under the STC test conditions. Thus, in the case presented above, the value to configure would be 45 Vdc (5 modules in series x 8,99 Vdc of open circuit). -
Page 20: System Start Configuration
Parameters Description P1026 – Voltage PID Derivative Gain Adjustable 0.000 to 32.000 Factory Setting: 0.000 Range: Properties: Access groups via HMI: SPLC Description: This parameter defines the derivative gain value of the PID controller for the DC voltage control. 5.1.3.1 PID Controller Gain Adjustment In controlling pumping systems, a Proportional-Integral (PI) velocity regulator is sufficient to achieve good control performance. -
Page 21: Solar Weg Detector
The WEG Solar Photovoltaic Detector consists of a photovoltaic module with a small power developed by WEG that will be connected to the analog input 2 (AI2) of the CFW500, whose function is to inform the solar radiation available at all times. The use of this device is optional but will increase the efficiency of solar pumping by allowing system starts to occur only when available solar radiation is sufficient to drive the pump at a predetermined minimum speed. -
Page 22: Pressure Controller
Parameters Description 5.2 PRESSURE CONTROLLER This group of parameters allows the user to configure the conditions of operation of the pressure controller. The pressure controller should receive the pressure return of the system by connecting a pressure transducer to the analogic input (AI1) and perform the pump speed control, when the user defined pressure is reached and the solar radiation conditions allow it. -
Page 23: Sleep Mode
Parameters Description Description: This parameter defines the derivative gain value of the PID controller for the pressure control. 5.2.2 Sleep Mode This group of parameters allows the user to configure the system to stop the pump when the pump motor speed drops below a programmed threshold (low control demand). -
Page 24: Protections
Parameters Description 5.3 PROTECTIONS This group of parameters allows the user to configure the protections as dry pump, maximum pressure and minimum pressure as dry pump protections, maximum pressure and minimum pressure. If the system activates pumping without pressure control, the time parameter P1045 and P1047 must be set to "0" so that as pipe pressure protection functions remain disabled. -
Page 25: Minimum Output Pressure
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 CFW500 frequency inverter. P1044 – Minimum Output Pressure Adjustable 0.0 to 300.0 Factory Setting: 0.0... -
Page 26: Control Setpoint
1 = Reset Time Operation (P1014) 2 = Reset kWh (P1015) Properties: Access groups via HMI: SPLC Description: This parameter allows to reset the parameters P1014 (operating time of the CFW500) and P1015 (kWh counter). Solar Pump Drive | 26... -
Page 27: Hmi Monitoring
P0206 – Secondary Display Parameter Selection P0207 – Bar Graph Parameter Selection NOTE! Refer to the CFW500 frequency inverter programming manual for further information about the HMI parameters. On the configuration wizard, some value options for the parameters were taken. 5.6 READING PARAMETERS P1010 –... - Page 28 Description: This parameter displays the kWh value produced by the CFW500 and consumed by the pump. Until it reaches the value of 1000 kWh, the data will be presented with one decimal point, that is, XXX.X kWh. From 1000 kWh, the parameter format will be without decimal point, XXXX kWh.
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Page 29: Power Up And Start Up
(clockwise or counterclockwise) will not cause damage to the machine or risk of accidents; 4) Energize input; 5) Enter the general parameters in the CFW500, report according to the technical characteristics of the water pump and the inverter;...