Month: November 2024

Posted on by — 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.

ACH531 Inverter

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

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. Hardware Failures:
    • Hardware failures such as the rectifier bridge, thyristors, and their trigger circuits inside the inverter may also cause the 3130 fault.
fault 3130

III. Solutions for the 3130 Fault

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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 by — 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
  1. 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.
  2. 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:

  1. 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.
  2. 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:

  1. Fieldbus Protocol:
    • The NX series supports multiple fieldbus protocols; users can select the appropriate protocol based on actual needs.
  2. 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:

  1. 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.
  2. 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.
  3. 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 by — Leave a comment

M-DRIVER INVERTER M900 Series User Manual Guide

1. Introduction to Inverter Panel Functions and Parameter Settings

1.1 Panel Function Introduction

The M-DRIVER INVERTER M900 series features an intuitive and user-friendly panel design, with key functions including:

  • Running Indicators: Display the inverter’s operating status, such as Forward (FWD), Reverse (REV), and Stop (STOP).
  • Fault Indicator (ALM): Lights up when the inverter encounters a fault, prompting the user to check.
  • Program Key (PRGM): Used to enter or exit the parameter setting interface.
  • Enter Key (ENTER): Confirms parameter modifications or accesses the next menu level.
  • Increment Key (▲) and Decrement Key (▼): Adjust parameter values or select menu items.
  • Shift Key (<<): Toggles between digit positions during parameter modification.
  • Run Key (RUN) and Stop Key (STOP/RESET): Start and stop the inverter, respectively.

1.2 Restoring Factory Default Parameters

Restoring factory default parameters resets the inverter to its initial state. The steps are as follows:

  1. Press the Program Key (PRGM) to enter the parameter setting interface.
  2. Use the Increment Key (▲) or Decrement Key (▼) to select parameter F0-24.
  3. Press the Enter Key (ENTER) to enter the parameter modification interface.
  4. Set the value of F0-24 to 1.
  5. Press the Enter Key (ENTER) again to save the setting and exit.

1.3 Setting and Removing Passwords

To protect the inverter parameters from unauthorized modification, a user password can be set:

  1. Enter the parameter setting interface and select parameter F6-03.
  2. Press the Enter Key (ENTER) to enter the password modification interface.
  3. Use the Increment Key (▲) or Decrement Key (▼) to set the password.
  4. Press the Enter Key (ENTER) again to save the password.

To remove the password, simply set the value of F6-03 to 0.

1.4 Setting Parameters for Synchronous Motor Control

When using the M900 series inverter to control a synchronous motor, the following parameters need to be set:

  • F8-06: Motor Control Mode, set to “2” (Synchronous Motor Vector Control without Speed Sensor).
  • F8-07: Motor Parameter Self-Tuning, select “Static Parameter Tuning” or “Dynamic Parameter Tuning” based on the motor state.
  • F8-16 to F8-18: Enter the synchronous motor’s stator resistance, d-axis inductance, and q-axis inductance parameters (if available on the nameplate, input directly; otherwise, perform parameter tuning).

2. Terminal Forward/Reverse and External Potentiometer Speed Control

2.1 Wiring Instructions

  • Forward/Reverse Control: Connect external switches to the inverter’s DI1 and DI2 terminals, with GND as the common terminal.
  • External Potentiometer Speed Control: Connect the potentiometer’s three terminals to the inverter’s AI1, GND, and +10V terminals, respectively.

2.2 Parameter Settings

  1. Enter the parameter setting interface and select F0-00, setting its value to “1” (Terminal Control).
  2. Select F1-00 and F1-01, setting the functions of DI1 and DI2 to Forward (FWD) and Reverse (REV), respectively.
  3. Select F0-01 and set its value to “2” (AI1 as the frequency source).
  4. Adjust the gain (F1-24) and offset (F1-25) of AI1 as needed to ensure the appropriate speed control range.

3. Modbus Communication and Siemens PLC SMART Control

3.1 Communication Parameter Settings

  1. Enter the parameter setting interface and select F7-00 to set the inverter’s device address.
  2. Select F7-01 to set the baud rate (e.g., 9600BPS).
  3. Select F7-02 to set the data format (e.g., no parity, even parity, etc.).
  4. Select F7-03 to set the communication timeout period.

3.2 PLC Control Settings

In the PLC programming software, send control commands to the inverter via the Modbus protocol. For example, to achieve forward/reverse control, the following commands can be sent:

  • Forward: Write the number “1” to the inverter’s 2nd register.
  • Reverse: Write the number “2” to the inverter’s 2nd register.

Ensure that F0-00 is set to “2” (Communication Control) and F0-01 is set to “8” (Communication Setting) to allow the inverter to receive control commands from the PLC.

4. Fault Code Meaning Analysis and Resolution Methods

4.1 Example Fault Codes

  • Err01: Inverter Unit Protection. Possible causes include output circuit short-circuit, excessive length of motor and inverter wiring, etc. Solutions include troubleshooting peripheral faults, installing reactors or output filters, etc.
  • Err02: Acceleration Overcurrent. Possible causes include output circuit grounding or short-circuit, too short acceleration time, etc. Solutions include increasing the acceleration time, adjusting the manual torque boost or V/F curve, etc.
  • Err10: Inverter Overload. Possible causes include excessive load or motor lock. Solutions include reducing the load and checking the motor and machinery, or selecting an inverter with a higher power rating.

4.2 Fault Handling Process

  1. Check Fault Code: When a fault code appears on the inverter panel, first record it and consult the fault code table in the manual.
  2. Analyze Possible Causes: Based on the fault code table, analyze the possible causes of the fault.
  3. Take Corrective Measures: Follow the suggestions in the manual or combine them with actual conditions to take appropriate corrective measures.
  4. Verify Repair Effectiveness: After resolving the fault, restart the inverter and verify that it has returned to normal operation.

5. Conclusion

The M-DRIVER INVERTER M900 Series User Manual provides detailed usage guides and parameter setting instructions. Through this guide, users can learn about panel functions, parameter restoration, password setting, synchronous motor control, terminal wiring and settings, Modbus communication, and fault handling. In practical applications, users should strictly follow the instructions in the manual to ensure the normal operation and long-term stability of the inverter.

Posted on by — 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

VFD-E 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

  1. Connect to the Inverter: Use a suitable communication cable to connect the source inverter (containing the desired parameters) to the target inverter.
  2. Enter Copy Mode: On the source inverter, press the MODE key until the “Copy” mode is displayed.
  3. Initiate Copy: Press the ENTER key to initiate the parameter copy process.
  4. 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:

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

Removing a Password:

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

Resetting to Factory Defaults

  1. Navigate to the parameter group 00 User Parameters.
  2. Select parameter 00-02 Parameter Reset Setting.
  3. Set the value to 09 for resetting to factory defaults at 50Hz, or 10 for resetting to factory defaults at 60Hz.
  4. 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

  1. External Terminal Connection: Connect the external control terminals (FWD, REV, STOP) to the corresponding terminals on the inverter.
  2. 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).
  3. 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 by — 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.
OC FAULT

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.
HOC FAULT

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 by — Leave a comment

Guangzhou Numerical Control Servo Unit DA98A User Manual Usage Guide

I. Basic Operations and Parameter Settings of the Servo Unit

1. Factory Reset and Parameter Backup
  • Factory Reset: To restore the servo unit to its default parameter settings, first enter the special password for modifying motor parameters, PA0=385. Then, find the corresponding code for your motor model (refer to Appendix A) and input it into parameter PA1. Finally, execute the parameter restoration operation.
  • Parameter Backup: To prevent erroneous parameter modifications, you can back up the current parameters to the EEPROM backup area. Select the “Parameter Backup” option in the parameter management menu via the operation panel to complete the backup operation. To restore, select “Restore Backup”.
2. Setting the Motor Model Selection Parameter
  • Motor Model Selection: Choose the compatible motor model by setting parameter PA1. After inputting the correct motor model code, the servo unit will automatically load the corresponding default parameters.
3. Jog Start and Stop
  • Jog Operation: In the menu, select the jog operation mode (PA4=3), set the jog speed (PA21), and ensure PA98=1 to force internal enabling. Subsequently, control the motor’s start and stop for forward and reverse rotation using the “+” and “-” keys on the operation panel.
4. Parameter Optimization
  • Speed Loop and Current Loop Optimization: The adjustments to the speed loop proportional gain (PA5) and integral coefficient (PA6) affect the servo system’s response speed and stability. The adjustments to the current loop filter coefficient (PA7) and speed feedback filter coefficient (PA8) influence the current smoothness and speed feedback response speed. These parameters need to be fine-tuned based on specific motor models and load conditions to achieve optimal performance.
DA98A servo unit position mode wiring diagram

II. Wiring and Parameter Settings Under Position Mode Control

1. Wiring Instructions
  • Position Mode Wiring: The main connections include power input (R, S, T), motor output (U, V, W), control power (r, t), encoder feedback (CN2 interface), and control signals (CN1 interface). Refer to the wiring diagrams in the manual for specific terminal connections.
2. Forward and Reverse Control
  • Forward and Reverse Implementation: Realize motor forward and reverse control by inputting pulse and direction signals through the PULS+, PULS-, and SIGN+, SIGN- terminals of the control signal CN1, or by using CCW and CW pulses. Set parameter PA14 to choose the pulse input mode (pulse + direction or CCW/CW pulses).
3. Key Parameter Settings
  • Position Command Electronic Gear Ratio: Adjust the electronic gear ratio to match different pulse sources and control resolutions by setting parameters PA12 (pulse command multiplication coefficient) and PA13 (pulse command division coefficient).
  • Position Command Pulse Input Mode: Set parameter PA14 to 0 for pulse + direction mode or to 1 for CCW/CW pulse mode.
  • Position Arrival Signal: Set the position arrival range pulse number by adjusting parameter PA16. When the remaining pulse number in the position deviation counter is less than or equal to this value, the COIN signal outputs ON.
DA98A servo unit main circuit wiring diagram

III. Fault Codes and Solutions

1. List of Fault Codes and Their Meanings
  • Err-1: Overspeed, indicating that the servo motor speed exceeds the set value.
  • Err-2: Overvoltage in the main circuit, indicating that the main circuit power supply voltage is too high.
  • Err-3: Undervoltage in the main circuit, indicating that the main circuit power supply voltage is too low.
  • Err-4: Position error, indicating that the value in the position deviation counter exceeds the set value.
  • Err-9: Encoder fault, indicating that the encoder signal is erroneous.
  • Err-11: IPM module fault, indicating that the IPM intelligent module is faulty.
  • Err-12: Overcurrent, indicating that the motor current is too high.
  • Err-13: Overload, indicating that the servo unit and motor are overloaded.
2. Solutions
  • Err-1: Check the control circuit board, motor encoder, input pulse frequency, and electronic gear ratio settings, or adjust the load moment of inertia ratio.
  • Err-2: Check the power supply, braking resistor wiring, internal braking resistor or circuit, or reduce the start-stop frequency and load inertia.
  • Err-3: Confirm the main circuit power wiring, power supply voltage, power capacity, and heat sink status.
  • Err-4: Check the pulse command frequency, electronic gear ratio settings, load inertia, motor encoder and its connections, or adjust the speed loop and position loop gains.
  • Err-9: Inspect the encoder connector and signal wire soldering, shorten the encoder cable length, or replace the motor encoder.
  • Err-11: Replace the servo unit, check the braking resistor wiring, adjust the current loop parameters, or reduce the load inertia.
  • Err-12: Reduce the load, check the grounding, or replace the motor.
  • Err-13: Adjust the speed loop gain, increase the acceleration/deceleration time, reduce the load inertia, or replace the high-power servo unit and motor.

IV. Scientific Usage Process of the Servo System

  1. System Installation and Wiring: Install the servo unit and motor correctly according to the installation instructions and wiring diagrams in the manual, ensuring all connections are accurate and error-free.
  2. Parameter Setting and Debugging: Set the corresponding parameters based on the motor model in use and conduct necessary debugging, including the optimization of key parameters such as the speed loop and current loop.
  3. Functional Testing: Conduct manual, jog, speed mode, and position mode operation tests under no-load conditions to ensure the servo system functions normally.
  4. Load Operation: After confirming the normal operation of the servo system under no-load conditions, connect the load for loaded operation testing and monitor the motor’s operating status and performance indicators.
  5. Fault Handling and Maintenance: In case of alarms or faults during use, troubleshoot and resolve them according to the fault codes and handling methods in the manual. Meanwhile, regularly maintain and service the servo unit and motor to ensure their long-term stable operation.

By following the above steps, you can ensure the scientific use and maintenance of the Guangzhou Numerical Control (GSK CNC) Servo Unit DA98A, improving production efficiency and equipment reliability.

Posted on by — 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.

LC630 inverter

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.
err23 fault

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 by — Leave a comment

Innov-X Alpha Series Spectrometer User Guide

I. Introduction to XRF Technology and Innov-X Alpha Series Performance Characteristics

1.1 Introduction to XRF Technology

X-Ray Fluorescence Spectrometry (XRF) is a powerful tool for elemental analysis and quantification. It works on the principle that different elements, when excited by X-rays, emit fluorescent X-rays with specific energies or wavelengths. These characteristics of the emitted X-rays can be used to identify and quantify the elements present in a sample.

α-6500

1.2 Innov-X Alpha Series Performance Characteristics

The Innov-X Alpha series of spectrometers are portable XRF analyzers featuring the following notable characteristics:

  • Portability: Designed for handheld use, facilitating on-site analysis.
  • Battery-Powered: Equipped with rechargeable lithium-ion batteries for extended operation.
  • High Precision: Utilizes a high-resolution silicon PIN diode detector for accurate elemental analysis.
  • Versatility: Suitable for analyzing alloys, soils, paints, and various other sample types.
  • User-Friendly: Integrated with an HP iPAQ Pocket PC for an intuitive operation interface.
  • Automatic Compensation: Automatically compensates for irregular or small samples, enhancing analysis accuracy.

II. Basic Operational Workflow and Radiation Safety Precautions

2.1 Basic Operational Workflow

  1. Inspection and Preparation: Ensure all accessories are present, batteries are fully charged, and the iPAQ is also charged.
  2. Power-On: Press the power switch on the back of the analyzer, followed by the power button on the iPAQ.
  3. Software Initiation: Select the Innov-X software on the iPAQ to begin using the analyzer.

2.2 Radiation Safety Precautions

  • Pre-Operational Preparation: Ensure operators have undergone radiation safety training and obtained the corresponding certificate.
  • Operational Norms: Never point the analyzer at any part of the body, especially during testing.
  • Radiation Warnings: Pay attention to the red indicator light on the analyzer and the warning label on the back, ensuring no one is around during testing.
  • Regular Monitoring: Use personal dosimeters to regularly monitor radiation exposure.
standardization failed

III. Routine Operational Procedures

3.1 Standardization Procedure

  • Steps: Perform standardization before each use or after hardware reset. Place the standardization cap over the analyzer probe and press the standardization button on the screen, waiting for completion.
  • Precautions: If standardization fails, check the placement of the cap, battery level, and restart the analyzer if necessary.

3.2 Software Trigger Lock

  • Function: Prevents accidental triggering, ensuring safe operation.
  • Operation: Unlock the trigger by tapping the lock icon on the iPAQ screen before testing. The trigger will automatically lock if no test is performed within five minutes.

3.3 Testing and Outputting Results

  • Testing: Align the probe with the sample and press the trigger or the start button on the iPAQ to initiate testing.
  • Viewing Results: Upon completion, results will automatically display on the iPAQ screen. Detailed data and spectra can be viewed on the results screen.
  • Data Export: Use ActiveSync software to connect the iPAQ to a computer and export test results to Excel or other software for further analysis.
count rate too low

IV. Operating Guide for Soil Mode

4.1 Soil Mode Setup

  • Mode Selection: Choose the “Soil” mode from the main menu.
  • Test Time Settings: Configure the minimum and maximum test times, as well as the test end conditions (e.g., maximum time, relative standard deviation).

4.2 Testing Steps

  • Sample Preparation: Place the soil sample in a test cup or on the test stand, ensuring it fully covers the probe window.
  • Initiate Testing: Press the trigger or the start button on the iPAQ to begin testing.
  • Result Analysis: After testing, review the element concentrations and spectra on the results screen, and export data as needed.

V. Fault Analysis and Troubleshooting

5.1 Inability to Standardize (Low Count Rate)

  • Possible Causes: Insufficient battery power, improper placement of the standardization cap, detector contamination or damage.
  • Troubleshooting:
    1. Check the battery level and ensure it is fully charged.
    2. Reposition the standardization cap to ensure it fully covers the probe window.
    3. Clean the detector window to remove any dirt or obstructions.
    4. If the issue persists, contact Innov-X technical support for further inspection and repair.

VI. Conclusion

The Innov-X Alpha series of spectrometers, with their portability, high precision, and versatility, offer wide applications in the field of elemental analysis. By following the operational procedures and radiation safety precautions outlined in this user guide, operators can safely and effectively conduct analyses on various samples. Additionally, understanding common faults and troubleshooting methods will help ensure the stable operation of the analyzer and extend its service life.

Posted on by — 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:

INDVS inverter shows 88888
  1. Power Issues: For example, voltage fluctuations or instability may prevent the inverter from completing its initialization process.
  2. Hardware Faults: Components such as the control board, drive board, or power supply may be damaged or malfunctioning.
  3. Communication Problems: Interruptions or errors in communication between the inverter and other devices may cause abnormal displays.
  4. 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:

Inovance inverter shows 88888
  1. Check Power Supply: Ensure that the voltage is stable and within the operating range specified by the inverter.
  2. 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.
  3. Test Communication: Verify that the communication lines between the inverter and other devices are properly connected and free from interference.
  4. Update Software/Firmware: If suspected, try updating the inverter’s software or firmware to the latest version.
  5. 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.

Posted on by — Leave a comment

Shenzhen SHZHD Inverter V680 Series Operation Guide and E10 Fault Handling

Shenzhen SHZHD Inverter V680 Series Operation Guide and E10 Fault Handling

I. Operation Panel Function Introduction, Parameter Factory Reset, and Password Management

SHZHD INVERTER V680

1. Operation Panel Function Introduction

The operation panel of the Shenzhen SHZHD Inverter V680 series provides an intuitive operation interface, allowing users to set various parameters and operate the inverter through buttons and displays on the panel. The main functions of the panel include:

  • Display Area: Displays current set frequency, output frequency, current, voltage, and other parameters.
  • Function Keys: Such as MENU, ENTER, △, ▽, used for entering menus, confirming settings, and adjusting parameters.
  • Run Key: Starts and stops the inverter.
  • Fault Indicator: When the inverter malfunctions, the corresponding indicator light will illuminate, prompting the user to check the fault.

2. Parameter Factory Reset

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

  1. Enter the menu interface and find the “Parameter Initialization” option.
  2. Select “Restore Factory Parameters” and confirm execution. At this point, all parameters except motor parameters will be restored to their factory settings.

3. Adding and Removing Passwords

To protect parameters from being modified casually, users can set passwords for the inverter.

  • Adding a Password: Enter the “User Password” setting, input the desired password, and confirm to save.
  • Removing a Password: Re-enter the “User Password” setting and set the password to 0 to remove password protection.

II. Torque Control and Vector Control

1. Torque Control

Torque control is a special control mode that allows users to directly set the output torque of the inverter instead of indirectly controlling the torque by setting the frequency. This control mode is very useful in situations where precise control of the load torque is required.

  • Setting Method: First, select “Torque Control” in the control mode. Then, choose the torque setting source through the corresponding parameter (such as A0-01), which can be the keyboard, analog input, communication, etc. Finally, set the desired torque value through parameters such as A0-03.

2. Vector Control

Vector control is a high-performance control method that achieves high-precision speed and torque control by precisely controlling the motor’s current and magnetic flux.

  • Optimizing Parameters: To obtain better vector control performance, users need to adjust related parameters based on the actual load conditions, such as the speed loop proportional gain (P2-00, P2-03) and speed loop integral time (P2-01, P2-04). The adjustment of these parameters requires certain professional knowledge and experience.

III. Terminal Start/Stop and Potentiometer Speed Regulation

1. Terminal Start/Stop

Controlling the start and stop of the inverter through external terminals is a commonly used control method. Users need to set the control mode of the inverter to “Terminal Control” and wire it correctly.

  • Wiring Terminals: Typically include the forward start terminal (e.g., DI1), reverse start terminal (e.g., DI2), and stop terminal (e.g., DI3).
  • Parameter Settings: Select “Terminal Command Channel” in P0-02 and set the corresponding terminal functions.

2. Potentiometer Speed Regulation

Potentiometer speed regulation is a simple speed regulation method where users can change the set frequency of the inverter by rotating the potentiometer, thereby achieving speed regulation.

  • Wiring Terminals: Connect the output end of the potentiometer to the analog input terminal of the inverter (e.g., AI1).
  • Parameter Settings: Select “Analog AI1 Setting” as the frequency source in P0-03.
E10 FAULT

IV. E10 Fault Handling

1. On-site Handling

The E10 fault typically indicates an overload of the inverter. When an overload fault occurs, users should first check if the load is too heavy or if the motor is stalled. If the load is normal, try increasing the inverter’s acceleration and deceleration times to reduce the impact on the motor.

2. Maintenance Handling

If on-site handling fails to resolve the issue, it may be necessary to disassemble the inverter for maintenance. During the maintenance process, focus on the following aspects:

  • Motor and Load: Confirm whether the motor and load are normal and free from mechanical faults or obstructions.
  • Inverter Parameters: Check whether the inverter’s overload protection parameters (such as P9-00, P9-01) are set reasonably.
  • Hardware Faults: If the parameter settings are normal and the load is without abnormality, it may be a hardware fault within the inverter, such as damaged power devices or poor heat dissipation. At this point, professional maintenance personnel should be sought for assistance.

Conclusion

The Shenzhen SHZHD Inverter V680 series is a powerful and flexible inverter product. Through this guide, users can better understand the inverter’s operation panel functions, parameter setting methods, the application of torque control and vector control, and common fault handling methods. In practical applications, users should configure parameters and control modes based on specific needs and load conditions to ensure stable operation and high performance of the inverter.