Category: Other Drives

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:

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.

2. 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.

3. 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.

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)

2. 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

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.

2. 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.

3. 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.

4. 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.

5. 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.

6. 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.

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.

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:

• 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.

I. Analysis of INI Alarm Causes

1. Literal Interpretation of INI Alarm
   • In VFDs, the “INI” alarm likely indicates issues or errors encountered during the device’s initialization process. This can stem from various reasons, including improper parameter settings, hardware failures, firmware issues, or external device connection errors.
   • For VFDs like the NZ200T, which employs open-loop vector control, the “INI” alarm may signify the VFD’s failure to correctly complete its initialization process upon startup or reset. This could result from unsatisfied specific hardware or software conditions, leading to the interruption or failure of the initialization process.
2. Initial Position Error
   • The INI alarm in ZONCN VFDs typically indicates an initial position error. This may occur when the VFD fails to accurately detect the motor’s initial position at startup, preventing the control program from executing subsequent commands accurately. Initial position errors can arise from various factors, including incorrect motor parameter settings, current circuit faults, or signal transmission issues.
3. Improper Motor Parameter Settings
   • The NZ200T VFD requires accurate setting of various motor parameters, such as rated voltage, rated current, and power factor. Inaccurate settings, particularly a low rated current setting, will prevent the VFD from effectively adjusting to the motor’s actual load conditions, thereby triggering the INI alarm.
4. Current Matching Fault or Signal Transmission Issue
   • The NZ200T VFD operates in open-loop vector control mode, necessitating precise current detection for accurate model analysis. Damage to the current transformer or issues with the signal transmission lines, such as poor contact or signal interference, will affect the VFD’s accurate determination of the motor’s position, subsequently triggering the INI alarm.
5. Control Mode Mismatch
   • The NZ200T VFD is designed for use with synchronous motors. When connected to a standard asynchronous motor or if the control mode is not correctly set, the INI alarm may also appear. This is because different types of motors exhibit distinct operational characteristics and control requirements, necessitating corresponding adjustments to the VFD’s control strategy based on the motor type.

II. Solutions

1. Recheck Motor Parameters
   • Firstly, carefully verify the settings of all motor parameters, ensuring consistency with the data on the motor’s nameplate. Pay particular attention to key parameters such as rated current, which should be set according to the motor’s actual specifications to avoid INI alarms caused by improper parameter settings.
2. Inspect Current Transformer and Signal Transmission Lines
   • Check the current transformer for damage or looseness, and replace it if necessary. Simultaneously, inspect the connection of the current transformer’s signal transmission lines to ensure good contact and absence of signal interference. If aged or damaged lines are found, promptly replace them with new ones.
3. Adjust Control Mode
   • If the NZ200T VFD is connected to a standard asynchronous motor, adjust the control mode to V/F control mode. Refer to the VFD user manual for specific setting methods: set parameter P0-02 to 2 and P1-04 to 50 (V/F control). This allows the VFD to directly control the standard asynchronous motor by adjusting the frequency for speed regulation, without altering other parameters. Additionally, ensure that the VFD’s software version matches the motor type to avoid control issues due to software incompatibility.
4. Seek Professional Technical Support
   • If the above methods fail to resolve the INI alarm issue, it is recommended to contact longi’s technical support team or professional maintenance personnel for fault troubleshooting and repair. When contacting technical support, provide a detailed description of the equipment’s operating environment, operation process, and alarm phenomena to enable technicians to quickly identify the problem and provide solutions.

In summary, the causes of INI alarms in the NZ200T VFD are diverse and require case-by-case investigation and resolution. By reasonably setting parameters, regularly inspecting equipment status, and seeking professional technical support, the incidence of INI alarms can be effectively reduced, ensuring stable equipment operation.

I. Operation Panel Functions and Instructions

The operation panel of the Great Inverter VC8000 series serves as the primary interface for user interaction with the inverter. It mainly consists of a display area and functional keys. Below are the main functions of the operation panel:

1. Display Area
   • Digital Display: Shows the current working status, frequency setting value, operating parameters, and other information of the inverter.
   • Function Indicators:
     • FWD/REV: Forward/Reverse indicator. Light off indicates forward operation, light on indicates reverse operation.
     • RUN: Running indicator. Light off indicates stop, light on indicates running.
     • LOCAL/REMOT: Command source indicator. Light off indicates panel control, light on indicates terminal control, flashing indicates communication control.
     • TUNE/TC: Tuning/Torque Control/Fault indicator. Light off indicates normal operation, light on indicates torque control, slow flashing indicates tuning status, fast flashing indicates fault status.
2. Functional Keys
   • PRG/Programming: Enters or exits the menu for parameter modification.
   • ENTER/Confirm: Enters the menu, confirms parameter settings.
   • ▲ Increment: Increments data or function codes.
   • ▼ Decrement: Decrements data or function codes.
   • < Shift: Selects parameter modification digits and display content.
   • RUN/Run: Starts the inverter.
   • STOP/RESET: Stops or resets the inverter.
   • MF/Multi-Function: Multi-function selection key, with specific functions determined by the P7-01 function code.

II. Wiring Instructions for Terminal Start/Stop and Potentiometer Debugging

1. Wiring Instructions
   • Start/Stop Control Wiring:
     • Start Terminal: Typically, the start signal is connected to DI1 (or another specified digital input terminal) and configured as a forward running command (e.g., P4-00=1).
     • Stop Terminal: Connected to DI2 (or another specified digital input terminal) and configured as a fault reset or stop command (e.g., P4-01=9).
   • Potentiometer Debugging Wiring:
     • If an external potentiometer is used for frequency adjustment, connect +10V and GND to the power terminals of the potentiometer, and connect the center tap to AI1 (analog input 1).
2. Parameter Settings
   • To meet control requirements, set the following parameters:
     • P4-00: Set DI1 as the forward running command (e.g., set to 1).
     • P4-01: Set DI2 function according to needs, typically as fault reset or stop command.
     • AI1-related Parameters: Ensure AI1 is configured to receive frequency settings (e.g., set P0-03 to AI1).
     • Other Necessary Parameters: Set relevant parameters in P0 group (basic function parameters), P2 group (vector control parameters), etc., according to specific needs.

III. Fault Code Analysis and Solutions

When faults occur in the Gelite Inverter VC8000 series, fault codes prefixed with “ERR” will be displayed. Below are analyses and solutions for some common fault codes:

1. ERR01 – Inverter Unit Protection
   • Cause: May be due to inverter overheating, short circuit, or drive board failure.
   • Solution: Check if the inverter module is overheating, check for short circuits in the motor and cables, and if the problem persists, contact the manufacturer for repair.
2. ERR02/ERR03/ERR04 – Acceleration/Deceleration/Constant Speed Overcurrent
   • Cause: Excessive motor load, short acceleration time setting, output short circuit, etc.
   • Solution: Check the motor load, appropriately extend the acceleration time, and check for short circuits in the output circuit.
3. ERR05 – Constant Speed Overvoltage
   • Cause: Excessive power supply voltage, abnormal braking unit, etc.
   • Solution: Check the power supply voltage and confirm if the braking unit is working normally.
4. ERR08 – Control Power Fault
   • Cause: Abnormal control power, such as unstable voltage or power cut.
   • Solution: Check the control power supply voltage and ensure stable power supply.
5. ERR19 – Overload
   • Cause: Motor operating under overload for an extended period.
   • Solution: Reduce the motor load and check for abnormalities in the mechanical parts.

Note: The above are only analyses and solutions for some fault codes. During actual use, please refer to the specific fault code manual for operation. For faults that cannot be resolved, please promptly contact longi technical support.

Operation Panel Key Descriptions:

• PRGM/ESC: Program setting and exit key. PRGM is used to enter programming mode or set parameters, while ESC is used to exit the current setting or return to the previous menu.
• FUNCTION/DATA: Function selection and data key. FUNCTION is used to enter the function selection interface, and DATA is used to modify data values during parameter setting.
• FORWARD/REVERSE: Forward and reverse control key. Controls the forward or reverse rotation of the motor.
• JOG/>>: Jog and page turning key. JOG is used for jog control, and >> may be used for page turning or increasing parameter values (specific functions may vary depending on the model).
• RUN: Run key. Controls the startup of the VFD.
• STOP/RST: Stop and reset key. STOP is used to stop the VFD operation, and RST is used to reset the VFD and clear fault states.
• UP/DOWN: Up and down adjustment key. Used to increase or decrease values during parameter setting.

Terminal Start/Stop and Potentiometer Debugging Wiring Instructions:

Terminal Start/Stop:

• Parameter Setting: Ensure parameter F0.02 is set to 1, selecting terminal control mode.
• Wiring Instructions:
  • Connect the external start signal to the S1 terminal of the VFD.
  • Short-circuit the S1 terminal with the common terminal DCM to send a start signal, causing the VFD to begin operation.
  • Disconnect the short-circuit between S1 and DCM to send a stop signal, causing the VFD to stop operation.

Potentiometer Debugging:

• Parameter Setting: Ensure parameter F0.03 is set to 1, selecting external potentiometer speed adjustment mode.
• Wiring Instructions:
  • Connect the center tap (sliding contact) of the potentiometer to the AVI terminal of the VFD.
  • Connect the two ends of the potentiometer to the 10V (or similar positive power supply) and ACM (or similar common terminal) of the VFD, respectively.
  • Adjust the position of the potentiometer to change the voltage value of the AVI terminal, thereby controlling the output frequency of the VFD.

Fault Code Analysis and Solutions:

Fault Codes:

• E001: DC bus fault. Possible causes include abnormal input power, faulty bus capacitors, etc. Solution: Check if the power input is normal, inspect the bus capacitors for damage, and replace if necessary.
• E002: Acceleration overvoltage. Possible causes include excessively short acceleration time, sudden load changes, etc. Solution: Adjust the acceleration time and check for load stability.
• E003: Constant speed overvoltage. Similar to E002 but occurs during constant speed operation. Solution is the same.
• E004: Acceleration overcurrent. Possible causes include motor stall, excessive load, etc. Solution: Inspect the motor and load conditions, reduce the load, or optimize motor operating conditions.
• E005: Deceleration overcurrent. Possible causes include excessively short deceleration time, large load inertia, etc. Solution: Adjust the deceleration time and consider using a braking unit and braking resistor.

Please note that the above content is based on the information you provided. During actual operation, please refer to the VFD manual and related materials. If you have any questions, please contact Longi Electromechanical’s technical support or professional maintenance personnel promptly.