Category: Other Drives

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Usage Instructions and Troubleshooting of COF Fault in Powtran PI8600 Series Inverter

I. Usage Instructions for Powtran PI8600 Series Inverter

1. Panel Operation Setup

The panel operation of the Powtran PI8600 series inverters is straightforward. Here’s how to set up panel start, panel speed regulation, restore factory settings, set passwords, and remove passwords:

Panel Start and Speed Regulation:

  1. Entering Parameter Setting Mode:
    • Press the PRG button to enter the parameter group query state.
    • Use the potentiometer to switch to the F00-63 basic function group.
    • Press the PRG button again to enter the parameter query state within the F00-63 group.
    • Switch to F02 (Frequency Main Setting Mode) using the potentiometer.
    • Press the PRG button to enter the parameter modification state for F02.
    • Set F02 to 4 (Keyboard Potentiometer Given) using the potentiometer and SET button.
  2. Adjusting Speed:
    • Rotate the potentiometer on the panel to adjust the set frequency in real-time, which will also adjust the motor speed.

Restoring Factory Settings:

  1. In the monitoring state, press the PRG button to enter the parameter group query state.
  2. Use the potentiometer to switch to the y00-23 system function group.
  3. Press the PRG button to enter the parameter query state within this group.
  4. Switch to y00 (Reset System Parameters) using the potentiometer.
  5. Press the PRG button to enter the parameter modification state.
  6. Set the parameter to 5 to reset the system parameters to factory defaults using the potentiometer and SET button.
POWTRAN Inverter PI8600

Setting and Removing Passwords:

  1. Setting a Password:
    • Enter the system function group (y00-23) as described above.
    • Switch to y15 (User Decode Input) to set the password.
    • Enter the desired password using the potentiometer and SET button.
  2. Removing a Password:
    • Again, enter the system function group.
    • Switch to y16 (User Password Input).
    • Enter the current password followed by the new password (all zeros to remove the password) using the potentiometer and SET button.
2. Fault Code Enumeration and Analysis
FUALT COF

Fault Code COF – Communication Failure:

Symptoms:

  • The inverter fails to communicate properly with external devices or the control panel.

Possible Causes:

  1. Poor connection at the keyboard interface or control board.
  2. Faulty keyboard cable or crystal connector.
  3. Damaged control board or keyboard hardware.
  4. Excessive length of the keyboard cable causing interference.

Solutions:

  1. Check and tighten all connections at the keyboard interface and control board.
  2. Replace the keyboard cable or crystal connector if damaged.
  3. Inspect the control board and keyboard for any signs of damage. Replace if necessary.
  4. If using a long keyboard cable, consider using a shielded cable or reducing the cable length to minimize interference.

Other Common Fault Codes:

  • OC: Overcurrent. Check the motor and cable connections, and ensure the motor is not overloaded.
  • OU: Overvoltage. Verify the input voltage and consider installing a voltage stabilizer.
  • LU: Undervoltage. Check the power supply and ensure it meets the inverter’s voltage requirements.
  • OL: Overload. Reduce the load on the motor or adjust the overload protection parameters.

By following the above instructions, users can effectively operate the Powtran PI8600 series inverters, troubleshoot common issues, and maintain optimal performance.

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Powtran Inverter PI500 Series Operation Methods and ERR07 Fault Handling

I. Operation Methods for Powtran Inverter PI500 Series

1. Panel Start and Stop

The Powtran Inverter PI500 series features an easy-to-use operation panel, allowing users to start and stop the inverter via panel buttons. Specific steps are as follows:

  • Start: Press the “Run” button on the operation panel to start the inverter. In keyboard operation mode, this button is used to initiate running.
  • Stop: Press the “Stop/Reset” button on the operation panel to stop the inverter. In keyboard operation mode, this button is used to halt running; in fault alarm states, it can be used for reset operations.
powtran inverter PI500 series

2. Debugging Steps

Proper debugging of the inverter is crucial to ensure its normal operation. The following is a general debugging process:

  1. Check Connections: Ensure all power and motor cable connections are correct and secure.
  2. Set Parameters: Configure various inverter parameters, such as control mode, acceleration and deceleration times, frequency source, etc., via the operation panel or remote communication.
  3. Motor Parameter Self-Learning: In vector control mode, motor parameter self-learning is required to ensure accurate motor control by the inverter.
  4. Jog Operation: Perform a jog operation to observe whether the motor’s rotation direction is correct. If abnormal, adjust the motor wiring phase sequence.
  5. Actual Operation: After confirming everything is correct, conduct an actual operation test to observe whether the inverter’s output frequency, current, voltage, and other parameters are normal.
fault err.07 of powtran inverter

II. Inverter Fault Codes and Meanings

The Powtran Inverter PI500 series provides extensive fault codes to help users quickly locate issues. Here are some common fault codes and their meanings:

  • Err.01: Inverter unit protection, possibly caused by output circuit short circuit, module overheating, etc.
  • Err.02: Acceleration overcurrent, possibly caused by too short acceleration time, low voltage, etc.
  • Err.03: Deceleration overcurrent, possibly caused by too short deceleration time, sudden load changes, etc.
  • Err.04: Constant speed overcurrent, possibly caused by excessive load, motor stall, etc.
  • Err.05: Acceleration overvoltage, possibly caused by lack of braking unit, high input voltage, etc.
  • Err.07: Constant speed overvoltage, possibly caused by external force dragging the motor during operation, high input voltage, etc.

III. ERR07 Fault Analysis

The Err.07 fault code indicates constant speed overvoltage, meaning the inverter detects excessively high output voltage during constant speed operation. Possible causes include:

  1. High Input Voltage: When the input voltage exceeds the rated voltage range of the inverter, it may lead to excessively high output voltage.
  2. External Force Dragging the Motor: During constant speed operation, if the motor is dragged to rotate by an external force, it may cause the inverter’s output voltage to rise.
  3. Braking Unit Failure: If the inverter is not equipped with a braking unit or the braking unit fails, it may not effectively dissipate the motor’s regenerative energy during deceleration, resulting in voltage rise.

IV. Solutions for ERR07 Fault

1. Reset or Adjust Inverter Parameters

  • Check Input Voltage: Ensure the input voltage is within the rated voltage range of the inverter. If the input voltage is too high, measures must be taken to reduce it.
  • Check External Force Dragging: Eliminate the possibility of external force dragging the motor and ensure the motor operates in a free state.
  • Check Braking Unit: If the inverter is not equipped with a braking unit, it should be installed as per actual needs; if the braking unit fails, it should be promptly replaced.
  • Adjust Parameters: Adjust relevant inverter parameters based on actual conditions, such as acceleration and deceleration times, overvoltage protection thresholds, etc.

2. Replace Boards or Circuits

If the Err.07 fault cannot be resolved after the above adjustments, it may be necessary to replace internal boards or circuits of the inverter. Specific steps are as follows:

  1. Power Off: First, disconnect the inverter’s power supply to ensure safety.
  2. Disassemble the Enclosure: Use appropriate tools to disassemble the inverter’s enclosure to expose the internal circuitry.
  3. Locate Faulty Components: Based on the fault code and circuit diagram, locate the potentially faulty board or circuit.
  4. Replace Components: Remove the faulty board or circuit and replace it with a new one. Be careful not to damage other components during the replacement process.
  5. Assemble the Enclosure: After replacement, reinstall the inverter’s enclosure.
  6. Power On and Test: Power on the inverter again and conduct tests to verify whether the fault has been resolved.

V. Precautions

  • Before performing any maintenance or replacement operations, ensure the inverter is powered off and follow relevant safety operating procedures.
  • When replacing components, use components of the same model and specifications as the original to ensure the normal operation of the inverter.
  • If unfamiliar with the internal structure and working principle of the inverter, seek help from professional technicians.

By following the above steps, users can effectively resolve the Err.07 fault in the Powtran Inverter PI500 series and ensure the normal operation of the inverter.

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Operating Guide for GK820 INVERTER User Manual of JiTaike

Introduction to the Functions of the INVERTER Operation Panel

The operation panel of JiTaike’s GK820 INVERTER serves as the primary interface for user interaction, providing a range of functions and settings. The operation panel includes a display screen and various buttons such as the Confirm key, Increase key, Decrease key, Run key, and Stop/Reset key.

How to Initialize Parameters

Parameter initialization restores all the function codes of the INVERTER to their factory default values. The operation steps are as follows:

  1. In the stopped state, press the Confirm key to display the current function code A0-00.
  2. Press the key to switch to the A0-03 function code.
  3. Press the key to select “2” or “3”, where “2” restores all parameters except motor parameters, and “3” restores all parameters (including motor parameters).
  4. Press the key to save the setting and automatically return to the A0-00 function code.
  5. Press the key to exit the function code sequence editing state.

How to Set and Cancel a Password

Password setting protects the INVERTER parameters from being changed arbitrarily. The operation steps are as follows:

  1. In the stopped state, press the Confirm key to display the current function code A0-00.
  2. Press the key to switch to the A0-00 function code and press the key to display the parameter value 0000.
  3. Press the key to modify the parameter value, for example, setting it to 1006.
  4. Press the key to save and automatically display the next function code.
  5. Repeat steps 2 to 4, setting the A0-00 parameter value to 1006 again.
  6. Simultaneously press the Increase key and Decrease key for 5 minutes, or restart the INVERTER, and the password will be activated.

The method for canceling the password is similar. Simply write the A0-00 parameter value as 0000 twice consecutively after the password is successfully set.

Terminal Start/Stop and External Potentiometer Speed Regulation Settings

Wiring Instructions

To achieve terminal start/stop and external potentiometer speed regulation, proper wiring and parameter settings are required. The specific wiring steps are as follows:

  1. Start/Stop Terminal Wiring: Connect the start terminal (e.g., FWD) to the X1 terminal of the INVERTER, and the stop terminal (e.g., REV) to the X2 terminal of the INVERTER.
  2. External Potentiometer Wiring: Connect the output terminal of the potentiometer to the AI1 or AI2 terminal of the INVERTER. Select voltage input or current input based on the potentiometer type and set it via the jumper switch S2 or S3.

Parameter Settings

  1. Run Command Given Method Settings:
    • Enter the function code b1-00 and set it to “1” for terminal control.
    • Enter the function code b1-02 and select forward or reverse rotation as needed.
  2. Frequency Given Method Settings:
    • Enter the function code b0-00 and set it to “3” for analog input AI1 or AI2.
    • Enter the function code b0-01 and set it to the corresponding analog input channel, such as “3” for AI1.
  3. Other Related Parameters:
    • Set parameters such as acceleration time (b2-01) and deceleration time (b2-02) as needed.

Meaning and Solutions of INVERTER Fault Codes

Common Fault Codes and Their Meanings

  • oC1/oC2/oC3: Overcurrent fault, indicating that the output current of the INVERTER exceeds the rated value.
  • ov1/ov2/ov3: Overvoltage fault, indicating that the DC bus voltage of the INVERTER is too high.
  • oL1: INVERTER overload, indicating that the output current of the INVERTER exceeds the rated value for an extended period.
  • oL2: Motor overload, indicating that the motor current exceeds the set value.
  • FAL: Module protection, indicating a fault in the power module inside the INVERTER.
  • ISF: Input power supply abnormality, indicating that the input power supply voltage or frequency is abnormal.

Solutions

  1. Overcurrent Fault (oC Series):
    • Check if the motor is locked or the load is too heavy.
    • Check the wiring between the motor and the INVERTER for good connection.
    • Appropriately increase the acceleration time and deceleration time.
  2. Overvoltage Fault (ov Series):
    • Check if the input power supply voltage is too high.
    • Check if the braking unit and braking resistor are working properly.
  3. Overload Fault (oL Series):
    • Check if the load is too heavy or if the motor is damaged.
    • Appropriately increase the overload protection time or reduce the overload protection level.
  4. Module Protection (FAL):
    • Check for foreign objects or damage inside the INVERTER.
    • Contact the manufacturer or a professional technician for repair.
  5. Input Power Supply Abnormality (ISF):
    • Check if the input power supply voltage and frequency meet the requirements.
    • Check if the power cord and wiring terminals are loose or poorly connected.

By following these steps, users can better operate and maintain JiTaike’s GK820 INVERTER, ensuring its normal operation and extending its service life.

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What Does “LL” Fault Mean on Eura Drives E800 Series Inverter, and How to Solve It?

Introduction

The E800 series of Eura Drives inverters is a widely used device in the field of industrial control, with its stability and reliability being crucial to users’ production activities. However, in practical applications, users may encounter various faults and issues, among which the “LL” fault displayed upon power-up is a particularly perplexing one.

The label of Eura Drives E800 Inverter

The Meaning of “LL” Fault

Upon power-up, if the E800 series inverter of Eura Drives displays the “LL” fault code and cannot be reset by pressing any buttons, it typically indicates a specific issue with the inverter. Unfortunately, the user manual may not explicitly state the meaning of the “LL” fault code. However, within the communication section, under the explanation of communication address meanings, the operational status parameter address 1005 mentions the inverter status: “OXOC (LL)”.

Despite the brief mention, there is no further elaboration on the “LL” fault code in the manual. Nevertheless, based on our experience and understanding of inverter fault codes, the “LL” fault on Eura Drives E800 series inverters generally indicates a low voltage fault. This means that the input voltage to the inverter is below the acceptable range, causing the inverter to malfunction and display the “LL” fault code.

Physical image of Eura Drives inverter displaying LL fault

Solutions to the “LL” Fault

To resolve the “LL” fault on Eura Drives E800 series inverters, the following steps can be taken:

  1. Check the Input Voltage:
    • Verify that the input voltage supplied to the inverter is within the specified range. For the E800 series, the input voltage range is typically three-phase 380V to 480V (with a tolerance of +10% to -15%) or single-phase 220V to 240V (with a tolerance of ±15%).
    • Use a voltmeter to measure the voltage at the inverter’s input terminals.
  2. Inspect the Power Supply:
    • Ensure that the power supply is stable and reliable. Check for any potential issues such as voltage fluctuations, surges, or drops that may affect the input voltage to the inverter.
  3. Review the Wiring:
    • Examine the wiring between the power source and the inverter to ensure that it is correct and free from any damage or loose connections.
  4. Check the Fuse and Circuit Breaker:
    • Verify that the fuse or circuit breaker protecting the inverter’s power supply circuit is not blown or tripped. Replace it if necessary.
  5. Consult the Manual and Technical Support:
    • If the issue persists after checking the above points, refer to the user manual for additional troubleshooting steps or contact Eura Drives’ technical support for assistance.
  6. Reset the Inverter:
    • Once the issue with the input voltage has been resolved, try resetting the inverter by pressing the reset button or cycling the power to see if the “LL” fault code clears.

Conclusion

The “LL” fault on Eura Drives E800 series inverters is generally indicative of a low voltage issue. By carefully checking the input voltage, power supply, wiring, fuse, and circuit breaker, and taking appropriate corrective actions, users can often resolve this fault and restore normal operation of the inverter. If the problem persists, seeking assistance from the manufacturer’s technical support is recommended.

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Operation Guide for LS Electric VFD LSLV-S100 Series User Manual

  1. Introduction to VFD Panel Functions
    Panel Composition
    The panel of the LS Electric VFD LSLV-S100 series consists of the following main parts:
LS S100 VFD Operation Panel Function Diagram

Display: Shows operating status, parameter information, fault indications, etc.
Keys:
RUN: Forward start key; pressing it starts the VFD in forward rotation.
REV: Reverse start key; pressing it starts the VFD in reverse rotation.
STOP/RESET: Stop/reset key; used to stop the VFD or reset faults.
Up/Down Arrow Keys: Used to increase or decrease values during parameter setting.
Left/Right Arrow Keys: Used to navigate between parameter groups or codes.
ENT: Enter key; used to confirm parameter settings or enter a function menu.
ESC: Multi-function key; can be set to move to the initial position, jog operation, switch between local/remote operation, etc.
SET/RUN Indicator: Indicates whether the VFD is in setting mode or running status.
FWD/REV Indicators: Indicate whether the VFD is in forward or reverse rotation, respectively.
Accessing Function Menus
Navigating Parameter Groups: Use the left/right arrow keys to move between different parameter groups.
Parameter Setting: Enter a parameter group, use the up/down arrow keys to select a specific parameter, press ENT to enter editing mode, and press ENT again to confirm the setting.
Jog Operation: If set to jog mode, press the ESC key, and then use the RUN and REV keys for jog operation.

  1. Terminal Start and Potentiometer Speed Control
    Wiring Instructions
    To achieve terminal start and potentiometer speed control, wire as follows:

Forward Start Terminal: Connect the forward start signal (e.g., FX terminal) of the control circuit to the P1 (or specified) terminal of the VFD.
Reverse Start Terminal: Connect the reverse start signal (e.g., RX terminal) of the control circuit to the P2 (or specified) terminal of the VFD.
Stop Terminal: Connect the stop signal of the control circuit to one of the multifunction input terminals of the VFD (e.g., a terminal set for stop function).
Potentiometer Wiring: Connect the three terminals of the potentiometer to the V1 terminal (voltage input), GND (ground), and VR terminal (reference voltage) of the VFD, respectively.
Parameter Setting
Operation Command Method: In the drive group (dr), set the drv parameter to Fx/Rx-1 or Fx/Rx-2 to select the terminal start mode.
Frequency Setting Method: In the basic function group (bA), set the Freq Ref Src parameter to V1 to select potentiometer speed control.
Multifunction Terminal Setting: In the input terminal function group (In), set terminals such as P1, P2 for forward and reverse start functions, and set the required stop terminal for stop function.

  2. VFD Initialization Setting
    To initialize VFD parameters, follow these steps:
LS Power VFD LSLV-S100 Series Control Terminal Diagram

Enter the drive group (dr) parameters.
Locate the dr.93 parameter (parameter initialization).
Press ENT to enter editing mode.
Use the up/down arrow keys to set the value to 9 (full initialization).
Press ENT again to confirm the setting.
The VFD will restart and apply the default parameter settings.

  1. Fault Code Analysis and Solutions
    Reading Fault Codes
    When a fault occurs in the VFD, a corresponding fault code will be displayed. You can view the fault code on the display of the panel or enter the protection function group (Pr) to view detailed fault information through related parameters.

Common Fault Codes and Solutions
OC (Overcurrent): Check if the motor is overloaded, if the motor cable is short-circuited, or if the output terminals have poor contact.
OV (Overvoltage): Check if the input voltage is too high, if the deceleration time is too short, or if the braking resistor is functioning properly.
UV (Undervoltage): Check if the input power supply is stable and if the voltage is within the allowed range.
OH (Overheat): Check if the ambient temperature around the VFD is too high or if the cooling fan is working normally.
EF (External Fault): Check if the external control circuit is normal or if there is an external fault signal input.
Solutions typically include adjusting parameter settings (e.g., increasing deceleration time, setting appropriate current limits, etc.), checking and repairing wiring issues, and replacing faulty components. When dealing with faults, always disconnect the power supply of the VFD to ensure safety.

This operation guide covers the main panel functions, wiring and parameter settings for terminal start and potentiometer speed control, initialization settings, and fault code analysis and solutions of the LS Electric VFD LSLV-S100 series. We hope this guide helps you better use and maintain this series of VFDs.

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Guide for the User Manual of Haishida HSD260 Series VFD

I. Introduction to the Operation Panel Functions

The Haishida HSD260 series VFD’s operation panel offers a variety of functions, enabling users to conveniently set, monitor, and control the VFD’s operation. The following are the main function introductions of the operation panel:

HSD260 VFD Operation Panel Function Diagram
  1. Display Settings

To set the display to show actual current instead of frequency, you need to access the parameter setting interface via the PRG key and adjust the relevant function codes. The specific steps are as follows:

Enter parameter settings: Press the PRG key to enter the P-group function parameter setting interface.
Select display parameter: Use the ▲ (increment) and ▼ (decrement) keys to find and select the parameter you want to display, such as U0-04 (output current).
Confirm and exit: Press the ENTER key to confirm your selection and exit the parameter setting interface via the PRG key. The operation panel will now display the value of the selected parameter.

  1. Start/Stop Operations

Start: Press the RUN key to start the VFD. If the command source (P0-02) is set to the operation panel, pressing the RUN key will start the VFD.
Stop: Press the RUN key again to stop the VFD. If the VFD is in a fault state, pressing the RUN key can also reset the fault.

  1. Parameter Adjustment

Enter parameter settings: Press the PRG key and use the ▲ (increment) and ▼ (decrement) keys to select the function code you need to adjust.
Modify parameter values: Press the SHIFT key to select the digit you want to modify, then use the ▲ (increment) and ▼ (decrement) keys to adjust the parameter value.
Save and exit: After making changes, press the ENTER key to save the settings and exit the parameter setting interface via the PRG key.

HSD260 VFD Control Circuit Wiring Diagram

II. Terminal Start and Potentiometer Speed Control Wiring and Control Terminals

  1. Terminal Start

To achieve terminal start, you need to correctly wire the control terminals and set the corresponding function codes. Below is a simple example of three-wire start wiring:

Wiring Example:
DI1 (Forward Start): Connect to the start button (normally open)
COM: Common terminal
DI2 (Stop): Connect to the stop button (normally closed)

Parameter Settings:
P0-02: Command source selection, set to 1 (terminal command channel)
P4-00: DI1 terminal function selection, set to 1 (forward operation)
P4-01: DI2 terminal function selection, set to 9 (fault reset)
P4-11: Terminal command mode, set to 2 (three-wire mode)

  1. Potentiometer Speed Control

When using a potentiometer for speed control, you need to correctly wire the potentiometer to the VFD’s analog input terminals and set the corresponding function codes. Below is an example of potentiometer speed control wiring:

Wiring Example:
+10V: Connect to the variable resistor terminal of the potentiometer
AI1: Connect to the other end of the potentiometer
GND: Connect to the common terminal of the potentiometer

Parameter Settings:
P0-03: Main frequency source selection, set to 2 (AI1)
Ensure the potentiometer’s resistance range matches the VFD’s input requirements

err18 fault

III. VFD Fault Analysis and Solutions

  1. ERR01: Inverter Unit Protection

Fault Analysis: This fault is usually caused by short circuits in the VFD’s output circuit, excessively long motor and VFD wiring, or overheated modules.
Solution:
Check and eliminate peripheral faults.
Install reactors or output filters.
Check for blocked air ducts and ensure the fan is working properly.
Ensure all connections are properly inserted.
If the problem persists, seek technical support.

  1. ERR02: Acceleration Overcurrent

Fault Analysis: This fault may be caused by grounding or short circuits in the VFD’s output circuit, vector control without motor parameter tuning, or too short an acceleration time.
Solution:
Eliminate peripheral faults.
Perform motor parameter tuning.
Increase the acceleration time.
Adjust the manual torque boost or V/F curve.
Check that the voltage is within the normal range.

  1. ERR05: Acceleration Overvoltage

Fault Analysis: This fault may be caused by excessively high input voltage, external forces dragging the motor during acceleration, or too short an acceleration time.
Solution:
Adjust the voltage to the normal range.
Eliminate external forces or install braking resistors.
Increase the acceleration time.
Install braking units and resistors.

  1. ERR10: VFD Overload

Fault Analysis: This fault is usually caused by excessive load or undersized VFD selection.
Solution:
Reduce the load and check the motor and mechanical condition.
Select a VFD with a higher power rating.

  1. ERR15: External Device Fault

Fault Analysis: This fault is usually caused by external fault signals input through multifunction terminals DI.
Solution:
Reset the operation.
Check and eliminate faults in external devices.

  1. ERR18: Current Detection Fault

Fault Analysis: This fault may be caused by abnormal Hall devices or drive boards.
Solution:
Replace the Hall devices.
Replace the drive board.

By following this guide, you should be able to better understand and utilize the Haishida HSD260 series VFD. If you encounter any unresolved issues, it is recommended to contact Rongji Electromechanical Technology Co., Ltd. for technical assistance.

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EV510 VFD User Manual and Operation Guide for Oulu

I. Introduction to Operation Panel Functions

Schematic diagram of EV510 VFD operation panel
  1. Panel Diagram and Indicator Descriptions
    Panel Diagram: The VFD operation panel typically includes a display screen, confirm button, stop/reset button, potentiometer adjustment, multifunction button, menu button, function indicators, run button, increase/decrease buttons, and shift button.
    Indicator Status:
    RUN/TUNE: Light off indicates stop, light on indicates operation.
    FWD/REV: Light off indicates normal operation, light on indicates reverse operation.
    TRIP: Light off indicates normal operation, slow flashing indicates motor self-learning (1 time/second), fast flashing indicates fault (4 times/second).
  2. Setting to Display Actual Speed Instead of Frequency
    To display actual speed instead of frequency, the monitoring parameter needs to be adjusted.
    Enter the parameter setting interface through the operation panel, locate the d0-19 feedback speed (Hz) function code, and set its value to the relevant parameter for displaying actual speed. The specific parameter value may vary depending on the VFD model and settings. Please refer to the function parameter table and monitoring parameter summary in the manual.
  3. Start, Stop, and Parameter Adjustment Button Operations
    Start: Press the run button (RUN) to start the VFD.
    Stop: Press the stop/reset button (STOP/RESET) to stop the VFD operation. In fault state, this button can also be used for reset.
    Adjust Parameters:
    Press the menu button (MENU) to enter the parameter setting menu.
    Use the increase/decrease buttons and shift button to select the parameter to be adjusted.
    Press the confirm button to enter the parameter modification state, then use the increase/decrease buttons and shift button again to adjust the parameter value.
    After adjustment, press the confirm button to save the settings and exit.
EV510 VFD physical picture

II. Terminal Start and Potentiometer Speed Adjustment Wiring and Parameter Settings

  1. Terminal Start Wiring
    Control Terminals: Typically, digital input terminals such as S1 (forward operation) and S2 (reverse operation) are used for start control.
    Wiring Method: Connect external control signals (such as buttons, relay contacts, etc.) to S1 and the common terminal COM for forward start; connect to S2 and the common terminal COM for reverse start.
  2. Potentiometer Speed Adjustment Wiring
    Control Terminals: Use analog input terminals such as AI1 and AI2 for potentiometer speed adjustment.
    Wiring Method: Connect the sliding end of the potentiometer to the analog input terminal (such as AI1), and connect the fixed ends to +10V and GND (common ground) respectively.
  3. Parameter Settings
    Start Parameters:
    Set P0-02 operation command channel to 1 (terminal command channel).
    According to the wiring, set P4-00 S1 terminal function selection to 1 (forward operation), and P4-01 S2 terminal function selection to 2 (reverse operation).
    Speed Adjustment Parameters:
    Set P0-03 main frequency source A command selection to 2 (AI1), indicating that AI1 terminal is used for frequency setting.
    According to the potentiometer wiring and speed adjustment requirements, set parameters such as P4-13 AI curve 1 minimum input, P4-15 AI curve 1 maximum input, P4-14 AI curve 1 minimum input corresponding setting, and P4-16 AI curve 1 maximum input corresponding setting to define the correspondence between potentiometer output voltage and frequency.
EV510E VFD Sstandard wiring diagram

III. VFD Fault Analysis and Solution

  1. Common Faults and Causes
    Overcurrent Fault: May be caused by motor stalling, overload, improper parameter settings, etc.
    Overvoltage Fault: May be caused by excessive input voltage, short deceleration time, damaged braking resistor, etc.
    Undervoltage Fault: May be caused by insufficient input voltage, power supply failure, etc.
    Overheating Fault: May be caused by high ambient temperature, poor VFD heat dissipation, excessive load, etc.
  2. Solutions
    Overcurrent Fault: Check if the motor is stalled or overloaded, adjust the load or increase the VFD capacity; check if the parameter settings are reasonable, such as acceleration time, deceleration time, etc.
    Overvoltage Fault: Check if the input voltage is normal, adjust the deceleration time or add a braking resistor; check if the braking resistor is damaged or poorly wired.
    Undervoltage Fault: Check if the input power supply is normal, and ensure that the power supply voltage is within the allowable range.
    Overheating Fault: Improve the VFD heat dissipation conditions, such as increasing ventilation, cleaning dust, etc.; reduce the load or increase the VFD capacity; check if the parameter settings are reasonable, such as carrier frequency, etc.
  3. Fault Troubleshooting Steps
    Observe Indicators: Initially judge the fault type based on the indicator status.
    View Fault Records: Enter the VFD fault record interface to view the type and occurrence time of the most recent fault or faults.
    Check External Wiring: Ensure that all external wiring is correct and free from looseness or short circuits.
    Adjust Parameter Settings: According to the fault type and cause, appropriately adjust the VFD parameter settings.
    Contact After-sales Service: If the fault cannot be resolved independently, contact the VFD manufacturer or professional maintenance personnel for repair.

Through the above steps, users can effectively use the Oulu EV510 VFD, including operation panel functions, terminal start and potentiometer speed adjustment wiring and parameter settings, as well as fault analysis and solutions.

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Operating Instructions for Invt IPE100 Series Engineering Inverter Manual

I. Introduction to Operation Panel Functions

The Invt IPE100 Series Engineering Inverter is equipped with an intuitive and user-friendly operation panel, featuring the following key functions:

  1. PRC/ESC (Program/Escape Key): Used to enter or exit the primary menu and delete quick parameters. This key facilitates menu navigation and parameter management during programming or debugging.
  2. DATA/ENT (Enter Key): Navigates through menu screens level by level and confirms parameter settings. It is essential for making and modifying parameter settings.
  3. ↑ (Up Key): Increments data or function codes. Used to conveniently increase numerical values when adjusting parameters.
  4. ↓ (Down Key): Decrements data or function codes. Corresponds to the Up Key for decreasing parameter values.
  5. 》/SHIFT (Shift Key): Cycles through display parameters in both stop and run display modes. During parameter modification, it selects specific digits for editing, providing flexibility in parameter editing.
  6. RUN (Run Key): Initiates inverter operation in keyboard control mode. It is a primary control for the inverter’s running state.
  7. STOP/RST (Stop/Reset Key): Halts inverter operation during runtime. In fault alarm states, it resets faults regardless of function code P7.04 settings.
  8. QUICK/JOG (Quick/Jog Key): Its function is determined by function code P7.03. When P7.03=0, it activates jogging mode (keyboard control only); when P7.03=1, it toggles between forward and reverse rotation (keyboard control only). Simultaneous pressing of RUN and STOP/RST keys initiates a free stop.
Operation Panel Function Diagram of Invt IPE100 Inverter

II. Terminal Start and External Potentiometer Speed Control Setup

  1. Parameter Settings:
    • P0.00=2: Selects V/F control mode, suitable for most general-purpose motors.
    • P0.01=1: Enables terminal command mode for inverter start/stop control.
    • P0.02=1: Selects analog input A1 for speed command, allowing speed regulation via an external potentiometer.
  2. Motor Parameter Input:
    • Enter the following parameters based on the motor nameplate: P2.00 (motor type), P2.01 (motor rated power), P2.02 (motor rated frequency), P2.03 (motor rated speed), P2.04 (motor rated voltage), and P2.05 (motor rated current).
  3. Wiring Instructions:
    • Connect one end of the start switch (or stop switch) to inverter terminal S1 and the other end to terminal COM (ground). Shorting S1 and COM activates the inverter.
    • Connect the wiper of the potentiometer to terminal AI1, and the potentiometer ends to terminals +10V and GND, respectively. Turning the potentiometer clockwise accelerates the inverter, while turning it counterclockwise decelerates it.
External Wiring Diagram of Invt IPE100 Inverter

III. Inverter Fault Code Analysis and Troubleshooting

  1. Output Faults (OUT1, OUT2, OUT3): Correspond to faults in phases U, V, and W, respectively. Causes may include rapid acceleration, inverter unit issues, or IGBT internal damage. Check for strong interference from peripheral devices and ensure proper motor and cable connections.
  2. Overcurrent Faults (OC1, OC2, OC3): Correspond to overcurrent during acceleration, deceleration, and constant speed operation, respectively. Check for excessive motor load, motor blockage, or improper parameter settings.
  3. Overvoltage Faults (OV1, OV2, OV3): Correspond to overvoltage during acceleration, deceleration, and constant speed operation, respectively. Verify the power supply voltage and ensure proper functioning of braking resistors and braking units.
  4. Undervoltage Fault (UV): Indicates that the bus voltage is below the set value. Check the input power stability and power line connections.
  5. Overload Faults (OL1, OL2): Correspond to motor overload and inverter overload, respectively. Verify motor load and inverter cooling conditions.
  6. Phase Loss Faults (SPI, SPO): Correspond to input and output phase loss, respectively. Inspect power and motor wiring connections and motor condition.

These are the basic operating instructions and common fault code explanations for the Invt IPE100 Series Engineering Inverter. In practical applications, please adjust parameter settings and troubleshoot faults according to specific situations.

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User Guide for Inovance Inverters MD280 Series Manual

I. Introduction

The Inovance MD280 series inverter is a powerful and user-friendly universal inverter widely applied in various automation equipment such as textile, papermaking, and machine tools. This guide will detail the operation panel functions, terminal start/stop configuration, external potentiometer speed regulation settings, and fault code troubleshooting for the MD280 inverter.

Function diagram of Inovance Inverters MD280 operation panel

II. Operation Panel Functions and Usage

The MD280 inverter’s operation panel serves as the primary interface between the user and the inverter, providing functionality such as run, stop, reset, and speed adjustment.

  • RUN Key: Pressing this key starts the inverter.
  • STOP/RES Key: Used to stop the inverter or reset it in case of a fault.
  • Multi-Function Key (MF.K): Depending on the setting, this key can switch command sources, toggle between forward and reverse rotation, or initiate jogging.
  • Speed Adjustment Potentiometer (if equipped): Rotating the potentiometer directly adjusts the inverter’s output frequency for speed regulation.

The LED display on the panel shows the inverter’s operating status, frequency, current, and other parameters, facilitating real-time monitoring.

Inovance Inverters MD280 Control Circuit Wiring Diagram

III. Terminal Start/Stop and External Potentiometer Speed Regulation

The MD280 inverter supports start/stop control through external terminals and speed regulation using an external potentiometer. Here are the detailed setup and wiring instructions:

1. Terminal Start/Stop Configuration

First, set the control command source through the inverter parameters. Navigate to the inverter parameter settings and set F0-00 to “1” (terminal command channel). Then, configure the DI terminal functions using the F2 group parameters, for example:

  • Set F2-00 to “1” to assign DI1 as the forward run terminal.
  • Set F2-01 to “2” to assign DI2 as the reverse run terminal.
  • Set F2-04 to “8” to assign DI4 as the free stop terminal.

When wiring, connect the external start, stop buttons, or contactors to the DI1, DI2, and DI4 terminals (depending on specific requirements), ensuring the common terminals are connected to the inverter’s COM terminal.

Inovance Inverters MD280 Label

2. External Potentiometer Speed Regulation

The MD280 inverter supports analog speed regulation via the AI2 terminal using an external potentiometer. First, set the J2 jumper on the control board to “V” (voltage input mode). Then, connect the three pins of the external potentiometer to AI2, GND, and +10V (or an equivalent voltage source from an external power supply).

In the parameter settings, ensure F0-01 is set to “1” (AI1 analog input) or “2” (AI2 analog input), depending on which AI terminal the potentiometer is connected to. Additionally, configure the AI input minimum and maximum values, along with the corresponding output frequency range, using parameters F2-09 to F2-12.

IV. Fault Code Meanings and Solutions

During operation, the MD280 inverter may encounter various faults and display corresponding fault codes on the LED screen. Here’s an explanation and solution for ERR02:

ERR02: Acceleration Overcurrent

  • Meaning: The inverter detects an overcurrent during acceleration.
  • Possible Causes:
    • Excessive motor load.
    • Too short acceleration time setting.
    • Improper V/F curve configuration.
  • Solutions:
    • Check if the motor load exceeds the rated capacity and reduce the load if necessary.
    • Increase the acceleration time (adjust parameter F0-09).
    • Optimize the V/F curve settings by adjusting parameters like F1-05 (torque boost).
    • Inspect the motor and connecting cables for short circuits or ground faults.

By following these steps, you can effectively resolve the ERR02 fault encountered during MD280 inverter operation, ensuring stable equipment performance.

Inovance Inverters experiences Error02 fault

V. Conclusion

The Inovance MD280 series inverter, with its robust functionality and user-friendly operation, holds a significant position in various automation equipment. This guide aims to enhance your understanding of the inverter’s operation panel functions, terminal start/stop and external potentiometer speed regulation settings, as well as fault code troubleshooting. By mastering these concepts, you can fully leverage the inverter’s performance advantages, boosting production efficiency.

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Analysis and Solution for OC Alarm Code in ZONCN Inverter NZ200 Series

In industrial automation control systems, inverters serve as critical devices for power transmission control, and their stability and reliability are directly related to the continuous operation of production lines. The Zhongchen Inverter NZ200 series, as a high-performance option, may encounter specific alarm codes during operation, particularly the OC (Over-Current) alarm.

Normal display content on the operation panel when ZONCN VFD is working

For short-duration, high-current OC alarms in the NZ200 series, the primary causes generally stem from issues within the current detection circuit of the drive board or potential damage to the module itself. These alarms may recur even after a reset due to underlying issues. Typically, the root causes can be attributed to the following scenarios:

  1. Excessively Long Motor Cables: Long motor cables can introduce excessive leakage current, potentially triggering the OC alarm.
  2. Inadequate Cable Selection: Choosing marginal cable types can also result in higher leakage currents, especially under high load conditions.
  3. Loose Cable Connections and Damage: Loose cable connections or damaged cables can cause arcing effects when the load current surges, triggering the OC protection mechanism.

Recommended Solutions:

ZONCN inverter OC3 alarm
  • Inspect and Shorten Motor Cables: Review the cable length and ensure it meets the manufacturer’s recommendations. If possible, shorten the cable length to reduce leakage current.
  • Upgrade Cable Quality: Replace existing cables with higher-quality, appropriately rated ones to minimize leakage current issues.
  • Tighten Cable Connections and Check for Damage: Thoroughly inspect all cable connections for tightness and integrity. Replace any damaged cables immediately.
  • Monitor and Adjust Load Conditions: Keep track of load changes and adjust inverter settings accordingly to avoid excessive current surges.
  • Inspect and Replace Drive Board/Module: If the issue persists despite the above measures, consider replacing the drive board or entire inverter module, as the internal circuitry may have been damaged.

By addressing these potential causes and implementing preventive maintenance practices, operators can significantly reduce the likelihood of OC alarms in their Zhongchen Inverter NZ200 series, ensuring the smooth and reliable operation of their industrial automation systems.