The document describes the PI500A-S Series Special Solar Inverter for Water Pumps, an English manual detailing its functions, technical specifications, usage, and maintenance.
Function Description
The PI500A-S series is a special solar inverter designed for water pump applications. It converts DC power from solar panels into AC power to drive water pumps. This inverter is equipped with various control modes and protection functions to ensure efficient and reliable operation of the water pump system. It supports both single-phase and three-phase motors, with specific wiring diagrams provided for each. The inverter can operate in different voltage ranges (DC150-450V, DC200-800V, DC400-900V) to accommodate various solar panel configurations and motor types.
Key functions include:
- Running Control: Forward/reverse run, jog, and multi-step speed control.
- Frequency Control: Output frequency adjustment from 0 to 6500Hz.
- PID Control: Built-in PID controller for closed-loop control systems, allowing for precise control of parameters like pressure, flow, or liquid level.
- MPPT Function: Maximum Power Point Tracking (MPPT) ensures that the solar panels operate at their peak power output, maximizing energy harvesting.
- Protection Functions: Comprehensive protection against overcurrent, overvoltage, undervoltage, overload, module overheating, input/output phase loss, short circuit, and more.
- Communication: RS485 communication interface for remote monitoring and control.
- Display and Keyboard: An LED display and keyboard for parameter setting, status monitoring, and fault diagnosis.
The inverter can be configured for various motor types, including ordinary three-phase asynchronous motors, single-phase motors (with or without capacitor removal), and single-phase motor reverse rotation.
Important Technical Specifications
The PI500A-S series offers a range of models with different power outputs and voltage specifications.
Power and Voltage:
- Rated Voltage:
- 1PH 220V (15%) ~ 220V (+10%)
- 3PH 220V (15%) ~ 220V (+10%)
- 3PH 380V (10%) ~ 480V (+10%)
- Input AC Voltage Frequency: 50Hz/60Hz
- Input DC Voltage Range:
- G1/G2: DC 150 – 450V
- G3: DC 400 – 900V
- Output Voltage Fluctuation: G1/G2: DC 150 – 450V, G3: DC 400 – 900V
- Output Frequency: 0.00Hz – 650.0Hz (Vector control), 0.00Hz – 320.0Hz (V/F control)
- Power Range: From 0.4kW to 22kW (depending on the model). For example, PI500A-S 0R4G1 is 0.4kW, while PI500A-S 22K3G3 is 22kW.
Control Performance:
- Control Method: V/F control, Vector control W/O PG, Vector control W/PG.
- Frequency Accuracy: Digital setting: 0.01Hz; Analog setting: maximum frequency * 0.025%.
- Speed Control Range: 1:100 (V/F control), 1:1000 (Vector control W/O PG), 1:2000 (Vector control W/PG).
- Torque Boost: Automatic torque boost, manual torque boost 0.1%–30.0%.
- Jogging Frequency: 0.00Hz – 50.00Hz.
- Acceleration/Deceleration Time: 0.0s – 6500.0s.
Input/Output Signals:
- Digital Input: 6 digital input terminals, DI1-DI5 can be high-speed pulse input (0~100kHz).
- Analog Input: 1 analog input terminal (0~10V or 0~20mA).
- Relay Output: 1 channel collector output terminal, 1 channel relay output terminal (AC250V/3A, DC30V/1A).
- Analog Output: 1 analog output terminal (0~10V or 0~20mA).
Environmental Conditions:
- Environment Temperature: -10℃ ~ 40℃ (derating to 50℃).
- Environment Humidity: < 90% RH, no condensation.
- Altitude: Below 1000m (no derating), maximum use altitude is 3000m.
- Cooling Method: Forced air cooling.
Usage Features
The PI500A-S inverter is designed for user-friendliness with a clear operation panel and comprehensive parameter settings.
Installation:
- Mounting: The inverter supports rail mounting, with specific dimensions provided for different power ratings (0.75-4kW, 5.5-11kW, 15-22kW).
- Wiring: Detailed wiring diagrams are provided for the main circuit, control circuit, and earthing. It emphasizes proper grounding and correct wiring of solar inputs, motor outputs, and control signals to ensure safety and optimal performance.
- Single-phase Motor Connection: Specific instructions and diagrams are given for connecting single-phase motors, including configurations with and without starting capacitors. It is crucial to verify the motor nameplate and ensure correct wiring to avoid damage.
Operation:
- Keyboard Operation Panel: The panel includes keys for RUN, STOP/RESET, LOCAL/REMOTE, FWD/REV, TUNE/TC, and navigation keys (UP, DOWN, SHIFT, ENTER, QUICK, ESC). These keys allow users to start/stop the inverter, switch control modes, change direction, adjust parameters, and navigate menus.
- Parameter Setting: The manual provides an extensive list of parameters grouped by function (e.g., F0 group for basic function, F1 for input terminals, F2 for output terminals, F3 for start/stop control, F4 for V/F control, F6 for keyboard and display, F7 for auxiliary functions, F8 for fault group, F9 for communication, Fb for control optimization, Fe for wobbulating, E1 for multi-stage PLC, E2 for PID function, b0 for motor parameters, y0 for function code management, y1 for fault query). Each parameter has a setting range, factory setting, and a description.
- Fault Diagnosis: The inverter has a comprehensive fault detection system. When a fault occurs, the display shows a fault code (e.g., Err01 for inverter unit protection, Err02 for overcurrent). The manual provides a table of fault IDs, types, possible causes, and corresponding solutions to help users troubleshoot issues effectively.
Special Features:
- Multi-stage PLC: The inverter supports multi-stage PLC operation, allowing for programmed control sequences with up to 15 stages.
- Sleep/Wake-up Function: The inverter can automatically enter sleep mode when the solar input is insufficient or the pump is not needed, and wake up when conditions are favorable, optimizing energy usage.
- Water Pump Specific Functions: Designed specifically for water pumps, it includes features like dry run protection, low water level protection, and maximum water level protection.
Maintenance Features
The manual emphasizes the importance of proper installation and regular checks to ensure the longevity and reliable operation of the inverter.
Preventive Maintenance:
- Environmental Checks: Ensure the operating environment adheres to specified temperature, humidity, and altitude limits. Avoid installation in environments with corrosive gases, flammable materials, dust, or metal particles.
- Wiring Integrity: Regularly check all wiring connections for tightness and signs of wear or damage. Ensure proper grounding.
- Cooling System: Verify that the forced air cooling system is functioning correctly and that ventilation openings are not obstructed. Clean dust from the heat sink and fan to maintain efficient cooling.
Troubleshooting and Repair:
- Fault Codes: The inverter's display shows specific fault codes when an issue arises. The fault diagnosis table in the manual is a critical tool for identifying the problem and implementing the correct solution.
- Warranty: For any problems within the warranty period, users are instructed to fill out the warranty card and return it to an authorized dealer.
- Professional Assistance: For complex issues or repairs, it is recommended to contact Powtran Technology or an authorized service provider. The manual provides contact information for technical support.
Firmware Updates:
- The manufacturer reserves the right to make product upgrades without prior notice. Users should refer to the actual product and the latest version of the manual for the most up-to-date information.
By following the guidelines in the manual, users can ensure the PI500A-S inverter operates efficiently and reliably for solar water pumping applications.
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