Industrial control technology

Posted on 2024年11月19日2024年11月19日 by baiyuzhan — Leave a comment

User Manual Guide for Convo Inverter FSCG05 Series

I. Introduction to Operating Panel Functions and Initialization Settings

1. Operating Panel Function Introduction

The Convo FSCG05 series inverters come equipped with an intuitive operating panel that offers extensive functionalities for parameter setting, monitoring, and control.

2. Factory Default Initialization Settings

Function diagram of CONVO inverter CVF-G5 panel

To restore the inverter to its factory default settings, you need to modify specific parameters. The key parameter to be set is b-11 (Parameter Initialization). Here’s how to do it:

Parameter and Setting: b-11 = 1
Procedure:
1. Access the advanced parameter mode by setting b-0 = 2.
2. Navigate to b-11 and set its value to 1.
3. Save the setting and restart the inverter to apply the factory defaults.

3. Copying and Downloading Parameters via Operating Panel

Copying Parameters:

Procedure for KP51B Keypad:
1. Set the source inverter to parameter copy mode by pressing Enter, Stop, Down, Enter sequentially.
2. Remove the keypad from the source inverter and insert it into the target inverter.
3. Initiate the parameter download to the target inverter by pressing Enter, Stop, Down, Down sequentially.
Procedure for KP51S Keypad (due to limited memory, parameters need to be copied in two batches):
- For copying B and L parameters: Press Enter, Stop, Down, Down, Enter.
- For copying H and E parameters: Press Enter, Stop, Down, Stop, Down.
- To copy all B, L, H, and E parameters, follow the above steps for each batch.

Downloading Parameters:

Simply reverse the above steps to download parameters from the keypad to an inverter.

II. Terminal Control for Forward/Reverse Rotation and Potentiometer Speed Regulation

CONVO frequency converter SCG05 multi machine RS485 communication synchronization function diagram

Setting Parameters for Terminal Control

Forward/Reverse Rotation Control:
- Set b-3 to select the control mode (e.g., 1 for external terminal control with keyboard stop disabled).
- Configure the function of terminals X1, X2, FWD, and REV via parameters like L-47 to L-53 based on your control requirements.
Potentiometer Speed Regulation:
- Set b-1 to 0 to use the potentiometer on the operating panel for speed control.
- No additional parameter settings are required if using the panel potentiometer exclusively.

CONVO is a brand under Bosch Rexroth,By following these steps and adjusting the specified parameters, you can effectively control the operation of your Convo FSCG05 series inverter, whether through the operating panel, external terminals, or by restoring factory settings. This user manual guide aims to provide a comprehensive reference for smooth and efficient inverter operation.

Posted on 2024年11月18日2024年11月18日 by baiyuzhan — Leave a comment

Analysis and Solutions for Faults F30005 and F30025 in Siemens G130_G150 Series Frequency Converters

Introduction

Siemens G130 and G150 series frequency converters play a crucial role in industrial automation systems, and their stability and reliability are vital for the smooth operation of production processes. However, in practical applications, these converters may encounter various faults, with F30005 (overload) and F30025 (overheating) being two of the most common ones. This article aims to provide an in-depth analysis of the meanings and causes of these faults and offer corresponding solutions. Additionally, a practical maintenance case is presented to illustrate the complexity of fault handling and the strategies employed.

Fault Analysis

F30025 (Overheating)

The F30025 fault typically indicates that the power unit’s chip temperature is too high. This fault can be caused by various factors, including but not limited to:

Poor Heat Dissipation: Issues such as fan failure, obstructed ventilation, or excessively high ambient temperatures can prevent the power unit from effectively dissipating heat.
Overload Operation: Prolonged high-load operation generates significant heat within the power unit.
High Pulse Frequency: Operating at high frequencies increases the heat generation in the power unit.

F30005 (Overload)

The F30005 fault signifies an I2t overload in the power unit. Possible causes include:

Excessive Load: The motor or mechanical load exceeds the rated power of the frequency converter.
Unreasonable Operating Cycle: Continuous operation without sufficient cooling time for the frequency converter.
Improper Parameter Settings: Inappropriate settings for parameters such as acceleration and deceleration times, leading to excessive output current from the frequency converter.

Additionally, faults like overcurrent (F30001) and grounding (F30021) are also closely related to current detection and judgment, indicating output currents exceeding rated values and insulation damage to motors or cables, respectively.

Mechanisms of Fault Occurrence

Faults Occurring at Power-On

Faults that occur immediately upon power-on often point to hardware issues, such as damaged current sensors (transformers) or related detection circuit problems. These faults typically manifest as errors as soon as power is applied and are difficult to resolve through parameter adjustments.

Faults Occurring During Operation

Faults that arise during operation may be the result of a combination of factors, including load variations, ambient temperatures, and ventilation conditions. Such faults are usually addressed by optimizing parameters, reducing load rates, and improving ventilation conditions.

Solutions

Optimizing Parameter Adjustments

Adjust Operating Cycles: Arrange the working and rest times of the frequency converter reasonably to avoid prolonged continuous operation.
Adjust Acceleration/Deceleration Times: Modify acceleration and deceleration times based on load characteristics to reduce the impact on the frequency converter.
Increase Preset Values for Electronic Thermal Protection: If the motor and frequency converter are not overloaded, the preset values for electronic thermal protection can be appropriately increased.

Reducing Load Rates

Check and Optimize Mechanical Loads: Ensure that mechanical loads operate within the rated power range of the frequency converter.
Adjust Gear Ratios: Where possible, adjust gear ratios to reduce the load on the motor axis.

Ensuring Adequate Ventilation

Regularly Clean Heat Sinks: Ensure that heat sink fins are free of dust and that fans are operating normally.
Improve Ventilation Conditions: Ensure that the frequency converter is installed in a well-ventilated location, away from direct sunlight and high-temperature environments.

Fault Repair

Handling Faulty Current Sensors

Check Current Sensors: Use a multimeter to test the output of the current sensors for normality.
Replace Damaged Current Sensors: If a sensor is confirmed to be damaged, it should be promptly replaced with a compatible model.
Adopt Temporary Solutions: In emergencies, if only two current sensors are available, the frequency converter can be set to V/F control mode, but risks should be noted.

Repairing Drive Boards

Check Optocouplers on Drive Boards: Optocouplers are key components for detecting the voltage drop across switching transistors and should be replaced if damaged.
Rewire or Replace Faulty Components: If other components (such as resistors, capacitors) on the drive board are damaged, they should be rewired or replaced.

Checking Current Detection Circuits

Trace Current Signal Paths: From the current sensors to the frequency converter’s control circuit, gradually check each component along the signal path.
Use Oscilloscopes to Detect Signal Waveforms: Observe the waveforms of current signals through an oscilloscope to identify any abnormalities.
Repair or Replace Faulty Components: Based on the detection results, repair or replace faulty components.

Practical Maintenance Case

In actual maintenance, we encountered a typical case that fully demonstrated the complexity of concurrent F30005 and F30025 faults and their solutions. The frequency converter immediately displayed an F30025 fault upon power-on, and further operation (such as pressing the ↓ key) revealed an F30005 fault, indicating simultaneous issues of overheating and overload.

Upon thorough inspection, it was found that the root cause was a damaged current sensor. This frequency converter utilized three ESM2000-9922 current sensors, each with a maximum secondary side output current of 400mA, collectively responsible for monitoring the three-phase current output of the converter. According to Kirchhoff’s Current Law, the sum of currents entering a node at any moment should equal the sum of currents exiting the node. In a three-phase system, this means that the algebraic sum of any two phase currents must equal the negative of the third phase current. Therefore, theoretically, as long as two current sensors are functioning normally, the reading of the third sensor can be inferred from their data.

However, this substitution scheme carries risks in practical operation, requiring that the three-phase currents and voltages output by the frequency converter remain relatively balanced and that the angle between the currents is close to the ideal 120°. Furthermore, since this frequency converter supports vector control, precise current measurement is crucial. Therefore, when adopting this temporary substitution scheme, we had to switch the converter’s operating mode from vector control to V/F control to avoid damaging the IGBT module due to inaccurate current calculations.

During the specific operation, we removed the damaged current sensor and reconnected the remaining two sensors. Then, through the frequency converter’s parameter setting interface, we changed its operating mode to V/F control. After these steps, although the frequency converter could be started and operated, the current values displayed on the screen were slightly lower than the actual values. In emergencies, this makeshift solution can temporarily restore the functionality of the frequency converter and ensure the continuity of the production process. However, in the long run, we still recommend replacing the damaged current sensor as soon as possible and restoring the frequency converter to its original vector control mode to ensure its performance and accuracy.

Conclusion

Although F30005 and F30025 faults are common in Siemens G130 and G150 series frequency converters, they can be effectively prevented and resolved through reasonable parameter adjustments, load reduction, improved ventilation conditions, and prompt fault repairs. In practical applications, targeted measures should be taken based on specific situations to ensure the stable operation of the frequency converters. Meanwhile, through meticulous inspections and flexible strategies, we can identify the key to solving problems and ensure the long-term reliable operation of the equipment.

Posted on 2024年11月14日2024年11月14日 by baiyuzhan — Leave a comment

Schneider ATV303 Series Inverter User Guide and F014 Fault Resolution Method

I. Introduction to the ATV303 Series Inverter Operation Panel

The Schneider ATV303 series inverter’s operation panel (also known as the display terminal or HMI) features an intuitive interface, allowing users to easily set parameters, monitor operational status, and troubleshoot errors. The primary functions of the operation panel include:

Display Screen: Displays the current status, parameter values, error messages, etc., of the inverter.
Navigation Buttons: Used to navigate between menus and parameters, and to adjust parameter values.
Mode Button: Switches between “Given” (rEF), “Monitor” (MOn), and “Configuration” (ConF) modes.
Stop/Reset Button: Stops motor operation or resets faults under certain conditions.
Run Button: Starts motor operation.

Setting and Removing Passwords

To prevent unauthorized access, users can set a password for the inverter. Here’s how:

Enter “Configuration” mode (ConF).
Select the “Maintenance” menu (900-).
Locate the “HMI Password” parameter (999).
Enter the desired password value (range: 2-9999) and press the “Confirm” button to save.

To remove the password, simply set the “HMI Password” parameter (999) to “OFF”.

Restoring Factory Settings

To reset the inverter’s parameters to their factory defaults, follow these steps:

Enter “Configuration” mode (ConF).
Select the “Store/Restore Parameter Sets” menu.
Set the “Factory/Restore Customer Parameter Settings” parameter (102) to “64”. The inverter will restart automatically and apply the factory settings.

Schneider inverter ATV303 control terminal wiring diagram

II. Terminal Forward/Reverse Control and External Potentiometer Speed Regulation

Terminal Forward/Reverse Control

To achieve motor forward/reverse control via the inverter’s control terminals, follow these setup and wiring steps:

Parameter Settings:
- Enter “Configuration” mode (ConF).
- Select the “Input/Output” menu (200-).
- Set the “Control Type” parameter (201) to “2-wire control” or “3-wire control”.
- For “2-wire control”, configure the “2-wire Control” parameter (202), e.g., “Forward Priority”.
- Set the “Reverse” parameter (503) to specify which logic input terminal controls reversal (e.g., LI2H for LI2 high level reversal).
Wiring:
- Connect the motor forward control terminal (e.g., LI1) to the forward control signal source.
- Connect the motor reverse control terminal (e.g., LI2, based on parameter settings) to the reverse control signal source.
- Ensure all control signal sources are passive dry contacts or provide appropriate level signals.

External Potentiometer Speed Regulation

To regulate inverter speed using an external potentiometer, configure the following parameters and connect the corresponding terminals:

Parameter Settings:
- Enter “Configuration” mode (ConF).
- Select the “Control” menu (400-).
- Set the “Given Channel 1” parameter (401) to “183” to receive speed input via analog input AI1.
- Set the “AI1 Type” parameter (204.0) to “Voltage” or “Current” based on the external potentiometer’s output type.
- For current output, also set the “0% AI1 Current Ratio Parameter” (204.1) and “AI1 Current Calibration Parameter 100%” (204.2).
Wiring:
- Connect the external potentiometer’s output terminal to the inverter’s analog input terminal AI1.
- Connect the external potentiometer’s power terminals (if needed) to the inverter’s +5V and COM terminals, or provide an external power supply.

III. F014 Fault Resolution Method

F014 Fault Overview

The F014 fault indicates that one phase is missing from the inverter’s output to the motor. This fault can cause abnormal motor operation or even damage to the motor and inverter.

Mechanism of Occurrence

The primary mechanisms behind the output phase loss fault include:

Loose or Poor Output Terminal Connections: Loose or poor contact between the inverter output terminals and motor connection terminals may prevent the transmission of electrical energy in one phase.
Motor or Cable Faults: Internal motor winding damage or cable breaks can also lead to output phase loss.
Inverter Internal Faults: Damage to power devices or control circuit faults within the inverter can cause output phase loss.

Repair Method

To resolve the F014 fault, follow these troubleshooting steps:

Check Output Terminal Connections: Verify that the connections between the inverter output terminals and motor connection terminals are secure and free from loose or poor contacts.
Inspect the Motor and Cable: Use a multimeter or other tool to check the continuity of the motor windings and cables, ensuring there are no breaks or shorts.
Examine the Inverter Internals: If the above checks are clear, the fault may lie within the inverter. Disassemble and inspect the inverter for damaged power devices or control circuit faults, and perform necessary repairs or replacements.
Re-execute Autotuning: After ruling out hardware faults, re-execute the inverter’s autotuning process to ensure correct parameter settings and normal motor operation.

By following these steps, users can effectively resolve the F014 fault on the ATV303 series inverter and restore normal device operation. Regular inspections and maintenance of the inverter are recommended to prevent similar faults from occurring.

Posted on 2024年11月13日2024年11月13日 by baiyuzhan — Leave a comment

Huayuan Inverter User Manual Usage Guide and ERR02 Fault Solution

I. Introduction to the Function of Huayuan Inverter G1 Series Operating Panel (Keyboard)

Function diagram of Huayuan inverter keyboard

Operating Panel Functionality

The Huayuan Inverter G1 Series operating panel integrates multiple functions to facilitate parameter setting, status monitoring, and fault diagnosis. The panel primarily consists of a 5-digit 8-segment LED display, 4 indicator lights, 8 buttons, and a rotary potentiometer.

LED Display: Shows output frequency, current, various parameter settings, and abnormal statuses.
Indicator Lights: Indicate the current operating mode (e.g., Hz, A, V).
Button Functions:
- Rotary Potentiometer: Used to adjust numerical settings; clockwise rotation increases the value, while counterclockwise rotation decreases it.
- Multifunction Button: Can be set to invalid, jog, or forward/reverse functions.
- Program Button: Enters or exits the parameter menu.
- Confirm Button: Enters the parameter menu and confirms current modifications.
- Shift Button: Switches between running status monitoring data and shifts parameters during modification.
- Run Button: Controls the start and stop of the inverter.
- Stop/Reset Button: Stops the inverter or resets faults.
- Up/Down Buttons: Increases or decreases function codes or values.

Huayuan Inverter G1 Series Wiring Diagram

Parameter Upload and Download

Parameter Upload: Copies the internal parameters of the inverter to the keyboard memory. Set function parameter P07.02=H.#1, press the “‖” button to start the upload, and “CoPy” will be displayed upon completion.
Parameter Download: Writes the parameters stored in the keyboard to the inverter. Set function parameter P07.02 to H.12 or H.13, press the “‖” button to start the download, and “LoAd” will be displayed upon completion.

Setting Open-Loop Vector Control (SVC) and Closed-Loop Vector Control (FVC) Modes

Open-Loop Vector Control (SVC):
1. Set P00.00=1.
2. Set motor parameters (P02.01~P02.05) according to the motor nameplate.
3. Perform motor parameter tuning (P00.25=1 for static tuning, P00.25=2 for dynamic tuning).
Closed-Loop Vector Control (FVC):
1. Set P00.00=2.
2. Set motor parameters (P02.01~P02.05) according to the motor nameplate.
3. Set encoder-related parameters (e.g., P20.00 sets the encoder line count, P20.02 enables the PG card encoder function).
4. Perform motor parameter tuning (P00.25=1 for static tuning, P00.25=2 for dynamic tuning).

Initializing Parameters

By setting function parameter P00.26, you can choose to restore factory default parameters (excluding or including motor parameters).

II. External Terminal Control

Achieving Forward/Reverse Rotation and Potentiometer Speed Adjustment

Terminal Connections

Forward/Reverse Control:
- For forward rotation, connect the DI1 terminal to the common terminal (COM).
- For reverse rotation, connect the DI2 terminal to the common terminal (COM).
Potentiometer Speed Adjustment:
- Connect the output end of the external potentiometer to AI1 or AI2, and the other end to the common terminal (COM).

Parameter Settings

Forward/Reverse Parameters:
- Set P05.00 (DI1 function) = 1 (forward rotation) or 2 (reverse rotation).
- Ensure P00.01 (command source selection) = 0 (keyboard control) or change it to 1 (terminal control) as needed.
Potentiometer Speed Adjustment Parameters:
- Set P00.02 (main frequency source X selection) = 1 (AI1) or select other analog inputs as needed.
- Ensure P05.59 (AI voltage or current selection) is set correctly (e.g., 00 indicates AI1 is a voltage input).

III. ERR02 Fault Solution

Meaning of ERR02 Fault

ERR02 indicates an “acceleration overcurrent fault,” meaning an overcurrent is detected during inverter acceleration.

Fault Causes and Solutions

Grounding or Short Circuit in Inverter Output Circuit:
- Check and eliminate grounding or short circuits in peripheral wiring.
Vector Control Mode Without Parameter Tuning:
- Ensure motor parameter tuning has been correctly performed (SVC or FVC mode).
Too Short Acceleration Time:
- Increase the acceleration time (P00.17 or P00.18).
Inappropriate Manual Torque Boost or V/F Curve:
- Adjust the manual torque boost (P04.01) or select an appropriate V/F curve (P04.00).
Low Voltage:
- Adjust the voltage to the normal range.
Starting a Rotating Motor:
- Choose speed tracking start or wait for the motor to stop before starting.
Sudden Load Increase During Acceleration:
- Eliminate sudden load increases or reassess the load condition.
Undersized Inverter Selection:
- Select an inverter with a higher power rating.

Repairing the Inverter

If the above methods cannot resolve the ERR02 fault, further inspection and repair of the inverter may be necessary:

Check the Drive Board and Main Control Board:
- Confirm that the drive board and main control board are functioning normally, and replace faulty components if necessary.
Check the Hall Sensor:
- Confirm that the Hall sensor is operating correctly, and replace it if damaged.
Contact the Manufacturer or Professional Repair Service:
- If the problem persists, it is recommended to contact the inverter manufacturer or a professional repair service for further inspection and repair.

Conclusion

The Huayuan Inverter G1 Series user manual provides a detailed operation guide and fault solution. By correctly setting parameters and using external terminal control, various functions of the inverter can be realized. For the ERR02 fault, the inverter can be restored to normal operation by troubleshooting and solving the problem step by step. When necessary, contacting the manufacturer or a professional repair service is crucial to ensuring reliable operation of the equipment.

Posted on 2024年11月12日2024年11月12日 by baiyuzhan — Leave a comment

Analysis and Solutions for the 3130 Fault in ABB Inverter ACH531

Introduction

The ABB inverter ACH531 is a high-performance drive equipment widely used in HVAC (Heating, Ventilation, and Air Conditioning) systems. However, during operation, various fault alerts may be encountered, with the 3130 fault being a relatively common one. This article will provide a detailed analysis of the meaning of the 3130 fault in the ABB inverter ACH531 and propose corresponding solutions to help technicians quickly locate and resolve the issue, ensuring stable operation of the equipment.

I. Meaning of the 3130 Fault

The 3130 fault in the ABB inverter ACH531 is defined as an input phase loss fault, also known as a DC voltage oscillation fault. The appearance of this fault code indicates that the inverter has detected an issue with the input power supply, resulting in fluctuations in the DC bus voltage exceeding the normal range (exceeding 13%). This fault typically causes the inverter to shut down to protect the motor and drive system from damage.

II. Cause Analysis of the 3130 Fault

Power Phase Loss or Fuse Blowing:
- When one phase of the input power supply to the inverter is missing or a fuse blows, it can lead to instability in the DC circuit voltage, triggering the 3130 fault.
Excessive DC Filter Capacitor Discharge and Insufficient Power Supply:
- The DC filter capacitors inside the inverter are used to smooth the DC bus voltage. If the capacitors discharge excessively and the power supply is insufficient, it can cause increased fluctuations in the DC bus voltage, leading to the 3130 fault.
Power Grid Interference:
- Interference factors such as imbalances, harmonics, or transient overvoltages in the power grid can affect the normal operation of the inverter and trigger the 3130 fault.
Oscillation Issues Under Heavy Loads:
- Under heavy load conditions, if the inverter’s parameter settings are unreasonable or the load fluctuates significantly, it may also cause DC bus voltage oscillation, leading to the 3130 fault.
Hardware Failures:
- Hardware failures such as the rectifier bridge, thyristors, and their trigger circuits inside the inverter may also cause the 3130 fault.

III. Solutions for the 3130 Fault

Check Power Supply and Fuse:
- First, check whether the input power supply to the inverter is stable and whether the three-phase voltage is balanced. Use a multimeter to measure the incoming voltage and ensure that the voltage of each phase is within the normal range.
- Check whether the fuse has blown and, if so, replace it with a new one promptly.
Check Rectifier Bridge and Thyristors:
- Examine the thyristors and their trigger circuits inside the rectifier bridge for anomalies. An oscilloscope can be used to observe the trigger waveform of the thyristors to ensure their normal operation.
- If a thyristor or trigger circuit fault is found, it should be replaced or repaired in a timely manner.
Test DC Bus Voltage:
- Test the actual value of the DC bus voltage under load to see if it fluctuates. If the actual value does not fluctuate while the detected value does, it may indicate a fault in the detection circuit.
- In such cases, consider replacing the relevant detection components, such as sensors or circuit boards.
Check Capacitor Capacity:
- Check whether the capacity of the DC filter capacitors has decreased. If the capacitor capacity is insufficient, replace it with a new one to improve the stability of the DC bus voltage.
Check Power Input Terminal:
- Examine whether the wiring at the power input terminal is secure, with no loosening or poor contact.
- Check whether the capacity of the power supply transformer meets the load requirements of the inverter system. If the transformer capacity is insufficient, replace it with a larger one.
- Check whether the switches or circuit breakers are qualified, whether the fuse has blown, and whether the thermal relay has tripped.
Adjust Parameter Settings:
- Under heavy load conditions, try adjusting the inverter’s parameter settings, such as increasing acceleration and deceleration times or optimizing load balancing designs, to improve the stability of the DC bus voltage.
- If needed, the 3130 fault can be masked by setting parameter 31.21 (input phase loss) to “0”, so that the inverter will not trip when it detects input phase loss. However, please note that this method is only a temporary measure, and the root problem still needs to be solved in the long run.
Check Other Hardware Faults:
- If the above methods fail to resolve the issue, further examine other hardware components inside the inverter, such as the RTAC (Real-Time Adaptive Control) module and the AIBP (Input Bridge Protection Board), for damage or poor insertion.
- If hardware faults are found, replace or repair the corresponding components promptly.

IV. Conclusion

When the ABB inverter ACH531 encounters the 3130 fault, it should be troubleshooted and resolved from multiple aspects, including the power supply and fuse, rectifier bridge and thyristors, DC bus voltage testing, capacitor capacity, power input terminal, parameter settings, and other hardware faults. Through systematic inspection and adjustment, the 3130 fault can be effectively located and resolved, ensuring stable operation of the inverter. Meanwhile, it is also recommended to regularly maintain and service the inverter to prevent faults from occurring.

Posted on 2024年11月11日2024年11月12日 by baiyuzhan — Leave a comment

VACON NX Inverter Series User Manual Guide

I. How to Achieve Forward/Reverse Rotation and Speed Control via External Terminals

The VACON NX series of frequency converters allows for straightforward forward/reverse rotation and speed control via external terminals. Here’s how to achieve this:

Application diagram of VACON inverter NX series control IO

Terminal Connections:
- Forward/Reverse Control:
  - Forward rotation is typically connected to the DI1 (forward start) terminal of the frequency converter.
  - Reverse rotation is typically connected to the DI2 (reverse start) terminal.
  - Note that different NX series models may have different terminal numbers; refer to the specific model’s user manual for confirmation.
- Potentiometer Speed Control:
  - Connect the three terminals of the potentiometer to the AI1 (analog input 1), GND (ground), and +10V (analog input positive power) terminals of the frequency converter, respectively.
Parameter Settings:
- Forward/Reverse Parameters:
  - Set the control source to external terminal control and ensure that the DI1 and DI2 functions are correctly configured for forward and reverse rotation.
- Potentiometer Speed Control Parameters:
  - Set AI1 as the frequency reference source.
  - Adjust the input range of AI1 as needed to ensure that the potentiometer’s output range matches the frequency converter’s frequency range.

VACON inverter NX series PID control IO wiring diagram

II. Characteristics of PID Function and Its Application in Constant Pressure Control of Water Pumps

The PID function of the VACON NX series frequency converter is highly capable and suitable for various automatic control applications. Here are its key features and how to apply it to constant pressure control of water pumps:

PID Function Characteristics:
- Supports multiple PID control modes, including standard PID and sleep/wake-up functions.
- Flexible PID parameter configuration via external terminals or fieldbus.
- Provides comprehensive monitoring and alarm functions to ensure stable system operation.
Application in Water Pump Constant Pressure Control:
- Terminal Connections:
  - Connect the output signal of the pressure sensor to the AI1 (analog input 1) terminal of the frequency converter.
  - Connect other control terminals as needed, such as start and stop.
- Parameter Settings:
  - Set AI1 as the actual value input for PID control.
  - Configure the reference value for the PID controller (target pressure value).
  - Adjust the PID parameters (proportional, integral, derivative) to achieve optimal control performance.
  - Set the sleep/wake-up function as needed to save energy.

III. Fieldbus Protocol and Communication with Siemens PLC

The VACON NX series supports multiple fieldbus protocols, including Profibus, Modbus, etc., facilitating communication with various PLCs. Here’s how to set up communication with a Siemens PLC:

Fieldbus Protocol:
- The NX series supports multiple fieldbus protocols; users can select the appropriate protocol based on actual needs.
Communication with Siemens PLC:
- Wiring:
  - Connect the frequency converter’s fieldbus interface to the corresponding interface of the Siemens PLC using a dedicated fieldbus communication cable.
- Parameter Settings:
  - Configure fieldbus parameters in the frequency converter, including station address, baud rate, etc.
  - Configure corresponding communication parameters in the Siemens PLC to ensure compatibility with the frequency converter.
  - Program the PLC to send start, stop, and speed adjustment commands to the frequency converter via the fieldbus.

IV. Fault Code Meaning Analysis and Troubleshooting

The VACON NX series provides comprehensive fault codes to help users quickly locate and resolve issues. Here are some common fault codes, their meanings, and troubleshooting methods:

F1: Overcurrent Fault
- Meaning: The output current of the frequency converter exceeds the set value.
- Troubleshooting: Check for motor overload, cable short circuits, and correct frequency converter parameter settings.
F2: Overvoltage Fault
- Meaning: The DC bus voltage of the frequency converter is too high.
- Troubleshooting: Check for stable input voltage and proper operation of the braking resistor.
F5: Charging Switch Fault
- Meaning: The internal charging switch of the frequency converter is abnormal.
- Troubleshooting: Check the charging switch and related circuits for proper functioning.

V. Conclusion

The VACON NX series user manual provides detailed usage guides and parameter setting instructions, helping users quickly get started and implement various complex control functions. Through this guide, users should now have a comprehensive understanding of how to achieve forward/reverse rotation and speed control via external terminals, the characteristics and application of the PID function, fieldbus protocol and communication with Siemens PLC, as well as the meanings and troubleshooting methods of fault codes. In practical applications, users should flexibly configure parameters and wiring based on specific needs and site conditions to achieve optimal control performance.

Posted on 2024年11月8日2024年11月8日 by baiyuzhan — Leave a comment

Delta VFD-E Series Inverter User Manual Operation Guide

I. Introduction to the Panel Functions and Operations of the Delta VFD-E Series Inverter

Panel Function Introduction

The panel of the Delta VFD-E series inverter primarily consists of the following function keys and display areas:

Power Indicator: Indicates whether the inverter is powered on.
RUN Indicator: Indicates the running status of the inverter.
FREQ Display: Displays the current operating frequency of the inverter.
MODE Key: Switches between different modes for parameter setting and monitoring.
▲/▼ Keys: Used for increasing or decreasing parameter values or frequency settings.
STOP Key: Stops the operation of the inverter.
RESET Key: Resets the inverter to its initial state or clears fault alarms.
ENTER Key: Confirms the setting of parameters.
JOG Key: Enables jogging (inching) operation of the motor.
FWD/REV Keys: Controls the forward and reverse rotation of the motor.

Panel Operations

Copying Parameters to Another Inverter

Connect to the Inverter: Use a suitable communication cable to connect the source inverter (containing the desired parameters) to the target inverter.
Enter Copy Mode: On the source inverter, press the MODE key until the “Copy” mode is displayed.
Initiate Copy: Press the ENTER key to initiate the parameter copy process.
Complete Copy: Follow the prompts on the display to complete the parameter copy. Disconnect the communication cable after copying is finished.

Setting and Removing Passwords

Setting a Password:

Navigate to the parameter group 00 User Parameters.
Select parameter 00-08 Parameter Protection Password.
Enter the desired password value (00-65535).
Press ENTER to confirm.

Removing a Password:

Navigate to the parameter group 00 User Parameters.
Select parameter 00-08 Parameter Protection Password.
Enter the password value you want to remove (set it to 00).
Press ENTER to confirm.

Resetting to Factory Defaults

Navigate to the parameter group 00 User Parameters.
Select parameter 00-02 Parameter Reset Setting.
Set the value to 09 for resetting to factory defaults at 50Hz, or 10 for resetting to factory defaults at 60Hz.
Press ENTER to confirm and restart the inverter to apply the reset.

Delta VFD-E inverter standard wiring diagram

II. Terminal Control for Forward/Reverse Start and Stop

Terminal Control Configuration

External Terminal Connection: Connect the external control terminals (FWD, REV, STOP) to the corresponding terminals on the inverter.
Parameter Configuration:
- Navigate to the parameter group 02 Operation Mode Parameters.
- Set parameter 02-01 First Operation Command Source to 01 (External Terminal).
- Set parameter 02-05 Two-Wire/Three-Wire Control to the desired control mode (e.g., 00 for two-wire control).
Control Logic:
- Forward Rotation: Close the FWD terminal and open the REV terminal.
- Reverse Rotation: Close the REV terminal and open the FWD terminal.
- Stop: Open both the FWD and REV terminals.

Monitoring and Troubleshooting

Monitoring: Use the inverter panel or an external monitoring device to check the operating status and parameters.
Troubleshooting: Refer to the inverter’s fault codes and troubleshooting guide in the user manual to diagnose and resolve issues.

By following the above steps, users can effectively operate and configure the Delta VFD-E series inverter for various applications, including terminal control for forward/reverse start and stop, parameter copying, password setting/removal, and resetting to factory defaults.

Posted on 2024年11月8日2024年11月8日 by baiyuzhan — Leave a comment

BEST Inverter FC300 User Manual Usage Guide and Distinction between HOC and OC Faults

I. Introduction to BEST Inverter FC300 Panel Functions and Parameter Settings

1.1 Introduction to Panel Functions

The BEST Inverter FC300’s operation panel is equipped with multiple function keys, including ESC, ENT, MF, >>, ↑, ↓, STOP/RESET, each with specific functions:

ESC: Exits the current setting or cancels the current operation.
ENT: Confirms the current setting or proceeds to the next operation.
MF: Multifunction key with different functions depending on the context.
>>: Switches between menus or parameters.
↑ and ↓: Adjust parameter values or scroll through menus.
STOP/RESET: Stops the inverter operation or resets the fault status.

1.2 Parameter Initialization and Upload/Download

The BEST Inverter FC300 supports parameter initialization, upload, and download, primarily through parameter P087.

Parameter Initialization: Set P087 to 1 and press ENT to confirm, restoring the inverter to factory settings.
Parameter Upload: Set P087 to 4, ensure correct connection between the inverter and computer, and upload current parameter settings via dedicated software.
Parameter Download: Set P087 to 5, ensure correct connection, and download parameters to the inverter via software.

1.3 Setting and Removing Passwords

To protect the inverter settings from unauthorized changes, the BAST FC300 supports password protection.

Setting a Password: Set a new password in P086 and choose 2 in P087 to memorize the password.
Removing a Password: Enter the current password in P086 and choose 3 in P087 to clear the password.

II. Terminal Start/Stop, Potentiometer Speed Adjustment, and Forward/Reverse Control

2.1 Terminal Start/Stop and Potentiometer Speed Adjustment

To achieve terminal-based start/stop of the inverter and potentiometer-based speed adjustment, correct wiring and parameter settings are required.

Wiring: Connect the start and stop signals to the X1 and X3 terminals of the inverter, respectively (or other designated terminals, as per the manual). Connect the potentiometer to the AVI or ACI terminals for analog speed adjustment.
Parameter Settings:
- Set P064 to 1 to select external terminal control.
- Configure the function of the AVI or ACI terminals, e.g., set P091’s X1 function to “Forward Start” and X3 to “Stop”.
- Adjust parameters like P053 as needed to set the range and mode of analog speed adjustment.

2.2 Terminal-Based Forward/Reverse Control

To achieve terminal-based forward/reverse control of the inverter, correct wiring and parameter settings are also necessary.

Wiring: Connect the forward and reverse signals to the X1 and X2 terminals of the inverter, respectively (or other designated terminals).
Parameter Settings:
- Ensure P064 is set to support external terminal control.
- Configure the functions of the X1 and X2 terminals, e.g., set P091’s X1 function to “Forward” and X2 to “Reverse”.
- Adjust parameters like P066 as needed to ensure motor reversal is allowed.

III. Distinction between HOC and OC Faults and Solutions

3.1 Distinction between HOC and OC Faults

HOC Fault: Typically refers to an overcurrent fault caused by damage to the inverter’s inverter module. This fault is severe and may be accompanied by damage to internal components of the inverter.
OC Fault: Generally refers to an overcurrent fault on the output side, which may be caused by motor stalls, excessive loads, short acceleration times, etc.

3.2 Fault Solutions

HOC Fault Solution:
1. Check the Inverter Module: Confirm if the inverter module is damaged and replace it if necessary.
2. Check the Drive Circuit: Inspect the drive circuit for normal function and troubleshoot drive faults.
3. Contact the Manufacturer: If the issue is complex or unresolved, contact BAST for repair or replacement.
OC Fault Solution:
1. Check the Motor and Load: Confirm if the motor is stalled or if the load is excessive, and adjust the load or motor parameters as necessary.
2. Adjust Acceleration Time: Increase the acceleration time to avoid instantaneous overcurrent during motor startup.
3. Check Wiring: Verify the wiring between the motor and the inverter for correctness and eliminate any wiring errors that may cause faults.
4. Reset the Inverter: Press the STOP/RESET button to reset the inverter and attempt to restart it.

IV. Conclusion

The BEST Inverter FC300, as a high-performance inverter, boasts a rich set of panel functions and flexible parameter settings, capable of meeting control demands in various complex operating conditions. Through correct wiring and parameter settings, functions such as terminal-based start/stop, potentiometer speed adjustment, and forward/reverse control can be achieved. Meanwhile, for common HOC and OC faults, users should be able to quickly identify the fault phenomenon and take corresponding measures for resolution to ensure the normal operation of the inverter. During use, users must strictly adhere to the safety precautions and operating procedures outlined in the manual to ensure the safety of personnel and equipment.

Posted on 2024年11月7日2024年11月7日 by baiyuzhan — Leave a comment

Guide to the LCGK-ZTV Inverter LC630 Series from Lianchuang High-Tech & Zhongtaiwei and Troubleshooting for Err23

I. Introduction to Panel Functions and Initialization Settings of the LCGK-ZTV Inverter LC630 Series

1. Panel Function Introduction

The LC630 series inverters from LCGK-ZTV are equipped with an intuitive operation panel, which mainly includes a display screen, function keys, and status indicator lights. The display screen shows current working status, parameter settings, and other information; the function keys include “MENU” (menu), “ENTER” (confirm), “UP/DOWN” (selection), etc., used for parameter setting and navigation; the status indicator lights indicate power, operation, faults, and other statuses.

2. Initialization and Password Setting

Initializing the inverter typically involves restoring default parameter settings. The specific steps are as follows:

Press the “MENU” key to enter the main menu.
Use the “UP/DOWN” keys to select the “Initialization” option and press “ENTER” to confirm.
The system will prompt whether to confirm initialization; press “ENTER” again to execute.

The LCGK-ZTV Inverter LC630 series supports password protection to prevent unauthorized modifications. The method for setting a password is as follows:

After entering the main menu, select the “Parameter Protection” option.
Use the “UP/DOWN” keys to select “Password Setting,” and press “ENTER” to enter.
Input the desired password (typically a 4-digit number) and press “ENTER” to confirm.
Input the password again for confirmation and press “ENTER” to save.

The method for clearing the password is similar. Simply select “Clear Password” after entering the current password in the “Password Setting” option and press “ENTER” to confirm.

3. Setting Panel Start and Panel Potentiometer Speed Adjustment

To achieve panel start and panel potentiometer speed adjustment, the following parameters need to be set:

Pr033: Start source selection. Set to 0 for panel start; set to other values for external signal start.
Pr034: Operating frequency source selection. Set to 0 for panel potentiometer speed adjustment; set to other values for external signal speed adjustment.
Pr052: Enable PID function (set according to specific situations when used for constant pressure water supply control).

II. Method for Achieving Constant Pressure Water Supply Control

1. Introduction to PID Function

The PID control is key to achieving constant pressure water supply control with the inverter. By monitoring changes in water supply pressure, the PID controller automatically adjusts the output frequency of the inverter to maintain a constant water supply pressure.

2. Parameter Setting

According to the instruction manual for the LCGK-ZTV Inverter LC630 series (especially pages 58, 59, and 60), the following parameters need to be set to achieve constant pressure water supply control:

Pr052: Enable PID function. Set to a non-zero value to enable PID control.
Pr100: PID target value setting. Set the target value according to the required water supply pressure.
Pr101: PID feedback signal source selection. Typically, select the output signal from the pressure sensor as the feedback signal.
Pr102, Pr103, Pr104: Set the P (proportional), I (integral), and D (derivative) parameters of PID control, respectively. These parameters need to be adjusted according to the actual system response to achieve the best control effect.
Pr105: PID output limiting. Set the maximum and minimum values of the PID output signal to prevent the inverter output frequency from exceeding the allowed range.

3. Notes

When setting PID parameters, ensure system stability and quick response.
Regularly check the accuracy of the pressure sensor and feedback signal to ensure the accuracy of PID control.
Adjust PID parameters according to actual water supply demands and pump performance to achieve optimal energy-saving effects.

III. Troubleshooting for Err23

1. Fault Mechanism Analysis

The Err23 fault code typically indicates a short circuit between the inverter output and ground. This may be caused by insulation failure of the motor or motor cables. When a short circuit occurs between the inverter output and ground, an excessively large current is generated, triggering the protection mechanism and displaying the Err23 fault code.

2. Fault Handling Method

When handling the Err23 fault, first check the insulation of the cables and motor:

Disconnect the inverter’s power supply to ensure safe operation.
Use an insulation resistance tester to test the insulation of the cables and motor. Check the insulation resistance between each phase of the cable and ground, as well as the insulation resistance of the motor windings, to ensure they meet the requirements. If the insulation resistance value is too low, it indicates insulation failure.
For cables, replace them with new ones that match the specifications of the original cables. During replacement, ensure the integrity and insulation performance of the cables to avoid new damage during wiring.
For the motor, if the insulation failure is severe, the entire motor may need to be replaced. When replacing the motor, ensure that the specifications and performance of the new motor match those of the original motor to meet the operational requirements of the inverter.
If the Err23 fault code persists after replacing the cables or motor, it may be necessary to consider replacing the entire unit. This typically indicates that there may be other faults within the inverter causing the ground short circuit issue.

Posted on 2024年11月5日2024年11月5日 by baiyuzhan — Leave a comment

Fault Analysis and Handling for Inverter Displaying “88888” upon Power-up, with All Indicators Lit and No Response to Any Button Press

In inverter maintenance, it is common to encounter a situation where upon power-up, the inverter displays “88888”, all indicators are lit, and pressing any button results in no response. This fault typically indicates the following possibilities:

Power Issues: For example, voltage fluctuations or instability may prevent the inverter from completing its initialization process.
Hardware Faults: Components such as the control board, drive board, or power supply may be damaged or malfunctioning.
Communication Problems: Interruptions or errors in communication between the inverter and other devices may cause abnormal displays.
Software or Firmware Issues: There may be bugs or incompatibilities in the inverter’s software or firmware that need to be addressed.

To troubleshoot this issue, the following steps can be taken:

Check Power Supply: Ensure that the voltage is stable and within the operating range specified by the inverter.
Inspect Hardware: Open the inverter’s casing and inspect the control board, drive board, and power supply for any signs of damage or malfunction. Replace any faulty components as necessary.
Test Communication: Verify that the communication lines between the inverter and other devices are properly connected and free from interference.
Update Software/Firmware: If suspected, try updating the inverter’s software or firmware to the latest version.
Reset the Inverter: Perform a hard reset of the inverter to see if it can recover from a stuck initialization state.

If the above steps fail to resolve the issue, it is recommended to contact the manufacturer’s technical support or a professional repair service for further assistance. Regular maintenance and inspections can also help prevent such faults from occurring in the first place.