Category: Electrical Equipment Manuals

Introduction

The JLS Inverter E Series is a high-performance motor control device widely used in industrial automation. Its user manual provides comprehensive guidance on installation, configuration, and maintenance, enabling users to operate the inverter efficiently. This article, based on the manual, offers a detailed guide on the operation panel functions, terminal-based forward/reverse control, external potentiometer frequency adjustment, and common fault codes with their solutions. The goal is to provide users with a practical and thorough reference for utilizing the JLS Inverter E Series effectively.

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1. Operation Panel Functions

The operation panel is the primary interface for interacting with the JLS Inverter E Series, allowing users to configure parameters, monitor operations, and diagnose faults. Below is an overview of its key functions and usage instructions.

1.1 Display and Function Buttons

• Display Screen: The LCD screen displays real-time information such as parameter values, operating frequency, output current, and fault codes. It supports multiple language options for user convenience.
• Function Buttons:
  • PRG/ENTER Key: Enters parameter programming mode or confirms parameter changes.
  • Up/Down Keys (▲/▼): Navigate through parameter lists or adjust parameter values.
  • Left/Right Keys (◄/►): Switch between parameter groups or move the cursor during parameter editing.
  • RUN Key: Starts the inverter, initiating motor operation.
  • STOP/RESET Key: Stops the inverter or resets it during a fault condition.
• DIP Switch: Located inside the operation panel, used to set parameter access restrictions.

1.2 Restoring Factory Settings

To reset the inverter to its default configuration, follow these steps to restore factory settings:

1. Press the PRG/ENTER Key to enter programming mode.
2. Use the ▲/▼ Keys to select the parameter group “F0” (Basic Function Group).
3. Use the ◄/► Keys to locate parameter “F0.00” (Restore Factory Settings).
4. Set “F0.00” to “1” (indicating a factory reset).
5. Press the PRG/ENTER Key to confirm.
6. The inverter will restart automatically, restoring all parameters to their factory defaults.

1.3 Setting and Clearing Passwords

To prevent unauthorized parameter modifications, the inverter supports password protection. Below are the steps to set and clear a password:

• Setting a Password:
  1. Enter programming mode by pressing the PRG/ENTER Key.
  2. Select the “F0” parameter group.
  3. Navigate to parameter “F0.01” (Password Setting).
  4. Enter a 4-digit password (e.g., “1234”).
  5. Press the PRG/ENTER Key to save the password.
• Clearing a Password:
  1. Enter programming mode.
  2. Input the current password to unlock parameter access.
  3. Navigate to parameter “F0.01”.
  4. Set “F0.01” to “0” (to disable the password).
  5. Press the PRG/ENTER Key to confirm.

1.4 Parameter Access Restrictions

Parameter access can be restricted using the DIP switch inside the operation panel. Follow these steps:

1. Open the operation panel to access the internal DIP switch.
2. Set the switch position based on the desired access level:
   • Position 1 (ON): Allows access to all parameters.
   • Position 2 (OFF): Restricts access to advanced parameters, allowing only basic parameters to be modified.
3. Close the panel and restart the inverter to apply the settings.

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2. Terminal-Based Forward/Reverse Control and External Potentiometer Frequency Adjustment

The JLS Inverter E Series supports motor forward/reverse control via terminals and frequency adjustment using an external potentiometer. Below are the detailed steps for implementation.

2.1 Wiring Configuration

• Forward/Reverse Control:
  • Connect an external switch or PLC output to the inverter’s “FWD” (forward) and “REV” (reverse) terminals.
  • Connect the control signal’s common terminal to the “COM” terminal.
• External Potentiometer Frequency Adjustment:
  • Connect the potentiometer’s middle tap to the “AI1” terminal (Analog Input 1).
  • Connect the potentiometer’s two ends to the “+10V” (power supply) and “GND” (ground) terminals.

2.2 Parameter Settings

• Forward/Reverse Control:
  1. Enter programming mode.
  2. Select parameter group “F1” (Operation Control Group).
  3. Set “F1.00” (Operation Command Source) to “1” (Terminal Control).
  4. Set “F1.01” (Forward Control) to “0” (FWD terminal controls forward rotation).
  5. Set “F1.02” (Reverse Control) to “1” (REV terminal controls reverse rotation).
• External Potentiometer Frequency Adjustment:
  1. Enter programming mode.
  2. Select parameter group “F2” (Frequency Setting Group).
  3. Set “F2.00” (Frequency Reference Source) to “2” (AI1 Analog Input).
  4. Based on the potentiometer’s characteristics, configure parameters “F2.01” (AI1 Minimum Input) to “F2.04” (AI1 Maximum Input) to calibrate the frequency range.
     • Example: Set “F2.01” to 0V corresponding to 0Hz and “F2.04” to 10V corresponding to 50Hz.

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3. Fault Codes and Troubleshooting

The JLS Inverter E Series manual lists common fault codes and their troubleshooting methods. Below are typical faults and their solutions:

• E001: Overcurrent Fault
  • Cause: Excessive motor load, overly short acceleration time, or output short circuit.
  • Solution:
    • Check and reduce motor load.
    • Extend acceleration time (adjust parameter “F3.01”).
    • Inspect output wiring to ensure no short circuits.
• E002: Overvoltage Fault
  • Cause: High supply voltage, overly short deceleration time, or faulty braking resistor.
  • Solution:
    • Verify power supply voltage stability.
    • Extend deceleration time (adjust parameter “F3.02”).
    • Check the braking resistor for damage or poor connection.
• E003: Undervoltage Fault
  • Cause: Low supply voltage or poor wiring connections.
  • Solution:
    • Ensure the power supply voltage is within the specified range.
    • Check wiring connections for secure contacts.
• E004: Overheat Fault
  • Cause: Poor heat dissipation, high ambient temperature, or faulty fan.
  • Solution:
    • Improve ventilation to enhance heat dissipation.
    • Reduce ambient temperature.
    • Inspect fan operation and replace if necessary.
• E005: Motor Overload
  • Cause: Excessive load or incorrect motor parameter settings.
  • Solution:
    • Reduce motor load.
    • Verify that motor parameters match the actual motor specifications.

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Conclusion

The JLS Inverter E Series is a versatile and robust solution for industrial motor control, offering flexible configuration options and reliable performance. Mastering the user manual’s instructions is critical for ensuring stable operation and extending the equipment’s lifespan. This article has provided a comprehensive guide to the operation panel functions, terminal control setup, and fault troubleshooting, serving as a practical reference for users. In practice, adhere strictly to the manual’s guidelines and perform regular maintenance to ensure the inverter’s safety and reliability.

Introduction

A Variable Frequency Drive (VFD) is an electronic device that controls the speed of an AC motor by adjusting the power supply’s frequency and voltage. It is widely used in industrial automation, energy management, and mechanical equipment control. The Yuxin L Series Inverter is a high-performance product known for its reliability and user-friendliness. This guide provides detailed instructions on using the inverter, covering the operation panel functions, terminal-based forward/reverse control, external potentiometer frequency adjustment, fault codes, and troubleshooting methods. The aim is to help users quickly master the device and utilize it effectively.

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Part 1: Operation Panel Functions

The operation panel is the primary interface for interacting with the Yuxin L Series Inverter, enabling parameter configuration, status monitoring, and fault resetting. This section details the panel’s functionalities and specific settings.

1.1 Panel Layout and Button Functions

The Yuxin L Series Inverter’s operation panel typically features an LCD display and several function buttons. The display shows operational status, parameter numbers, parameter values, and fault codes. Common buttons and their functions include:

• MENU/ESC: Enter or exit the parameter setting menu.
• UP/DOWN: Navigate the menu or adjust parameter values.
• ENTER: Confirm selections or save parameter settings.
• RUN: Start the inverter’s operation.
• STOP/RESET: Stop the inverter or reset a fault condition.

Users are advised to familiarize themselves with the panel layout and refer to the manual’s panel diagram to ensure accurate operation.

1.2 Restoring Factory Settings

In cases such as incorrect parameter configurations or the need for reinitialization, restoring the inverter to factory settings may be necessary. Follow these steps:

1. Press the MENU/ESC button to access the main menu.
2. Use the UP/DOWN buttons to locate the “Parameter Management” or similar option (refer to the manual for the exact name).
3. Press ENTER to enter the submenu.
4. Select the “Restore Factory Settings” option.
5. Press ENTER to confirm. The inverter will reset all parameters to their default values.
6. Wait for the display to indicate completion, typically taking a few seconds.

Note: Restoring factory settings will erase all custom parameters. Back up important data beforehand.

1.3 Setting and Clearing a Password

To prevent unauthorized parameter changes, the Yuxin L Series Inverter supports password protection. Below are the steps to set and clear a password:

Setting a Password

1. Navigate to the “Parameter Management” menu.
2. Locate the “Password Setting” option.
3. Press ENTER and input a 4-digit password (e.g., “1234”).
4. Press ENTER to save. The password will take effect.
5. The next time you access parameter settings, the password will be required.

Clearing a Password

1. Enter the “Password Setting” menu.
2. Input the current password for verification.
3. Set the password value to “0000” or leave it blank (check the manual for specifics).
4. Press ENTER to save, and the password will be cleared.

Tip: If you forget the password, restoring factory settings may be required, but this will also reset other parameters.

1.4 Parameter Access Restrictions

Parameter access restrictions allow locking specific parameters to prevent accidental or unauthorized modifications. The process is as follows:

1. Access the “Parameter Management” menu.
2. Select the “Parameter Lock” or similar option.
3. Specify the parameter group to lock (e.g., advanced parameters or specific function parameters).
4. Set the lock status (typically “1” for locked, “0” for unlocked).
5. Press ENTER to save.
6. If a password is set, it will be required to modify locked parameters.

This feature allows flexible control over parameter accessibility, ensuring safe operation.

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Part 2: Terminal-Based Forward/Reverse Control and External Potentiometer Frequency Adjustment

The Yuxin L Series Inverter supports terminal-based control and frequency adjustment, enabling precise motor control. This section explains how to implement forward/reverse control and frequency adjustment using an external potentiometer, including wiring and parameter settings.

2.1 Terminal-Based Forward/Reverse Control

Terminal-based forward/reverse control is a common method for applications requiring external switches or PLC control.

Wiring Method

• Connect the forward switch to the digital input terminal DI1 and the common terminal COM.
• Connect the reverse switch to the digital input terminal DI2 and the common terminal COM.
• Ensure secure connections and refer to the manual’s terminal layout diagram to confirm terminal positions.

Parameter Settings

1. Set parameter P0.01 (Control Mode) to “1” to select terminal control mode.
2. Set parameter P4.00 (DI1 Function) to “1” to designate DI1 as the forward run command.
3. Set parameter P4.01 (DI2 Function) to “2” to designate DI2 as the reverse run command.
4. Save the settings. Closing the DI1 switch initiates forward rotation, and closing the DI2 switch initiates reverse rotation.

Note: Parameter numbers may vary by model. Refer to the manual’s parameter table for accuracy.

2.2 External Potentiometer Frequency Adjustment

Using an external potentiometer for frequency adjustment allows smooth speed control, ideal for applications requiring manual adjustments.

Wiring Method

• Connect the potentiometer’s center tap to the analog input terminal AI1.
• Connect one end of the potentiometer to the +10V terminal (provides reference voltage).
• Connect the other end to the GND terminal (ground).
• Use an appropriate potentiometer (typically 10kΩ) and ensure correct wiring.

Parameter Settings

1. Set parameter P0.03 (Frequency Reference Source) to “2” to select analog input AI1 for frequency setting.
2. Verify parameter P4.10 (AI1 Input Range) matches the potentiometer’s voltage range (typically 0-10V).
3. Save the settings. Rotating the potentiometer adjusts the output frequency.

Tip: If the frequency adjustment range is not as expected, adjust related parameters (e.g., maximum frequency P0.11).

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Part 3: Fault Codes and Troubleshooting

During operation, the inverter may encounter faults, displayed as fault codes on the screen. This section lists common fault codes and their solutions, but refer to the manual’s fault list for specific codes.

3.1 Common Fault Codes and Solutions

• E001: Overcurrent
  • Possible Causes: Excessive motor load, short acceleration time, or incorrect motor wiring.
  • Solutions:
    1. Check motor wiring for short circuits or poor connections.
    2. Reduce the load or increase the acceleration time (parameter P0.12).
    3. Restart the inverter to check if the issue resolves.
• E002: Overvoltage
  • Possible Causes: High input voltage, short deceleration time, or braking unit failure.
  • Solutions:
    1. Verify the power supply voltage is within the specified range.
    2. Extend the deceleration time (parameter P0.13).
    3. If frequent, check the braking resistor for proper function.
• E003: Undervoltage
  • Possible Causes: Low power supply voltage or unstable power.
  • Solutions:
    1. Ensure the input power voltage is stable.
    2. For multiple devices, confirm adequate power supply capacity.
• E004: Motor Overload
  • Possible Causes: Excessive load or incorrect motor parameter settings.
  • Solutions:
    1. Reduce the load or select a motor with higher power capacity.
    2. Verify motor parameters (P1 group) match the actual motor.
• E005: Inverter Overheating
  • Possible Causes: High ambient temperature or blocked/faulty cooling fan.
  • Solutions:
    1. Improve ventilation and reduce ambient temperature.
    2. Clean the fan and heatsink to ensure proper cooling.

3.2 General Troubleshooting Steps

1. Record the fault code and consult the manual for its specific meaning.
2. Inspect wiring, power supply, and load conditions to rule out external issues.
3. Press STOP/RESET to attempt a reset. If unsuccessful, power cycle the inverter.
4. If the issue persists, contact technical support with detailed fault information.

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Conclusion

The Yuxin L Series Inverter offers robust functionality and flexible configuration, making it an excellent choice for motor control applications. This guide has detailed the operation panel’s usage, terminal-based control and frequency adjustment methods, and fault troubleshooting procedures. Due to model variations and application complexity, users should always refer to the official Yuxin L Series Inverter Manual for precise details. By mastering these foundational skills, you can fully leverage the inverter’s capabilities, enhance equipment efficiency, and address potential issues promptly.

I. Fault Phenomenon and Definition

ERR04 is a common fault code for the Ruishen RCP600 series inverter during operation, indicating a constant speed overcurrent issue. This fault is triggered when the inverter detects that the output current continuously exceeds 150% to 200% of the rated value during the constant speed stage (non-acceleration/deceleration process). The fault phenomena include:

• Display of “ERR04” or “Constant Speed Overcurrent” alarm on the inverter panel.
• Equipment shutdown protection, possibly accompanied by abnormal noise or motor overheating.
• The fault can be reset for brief operation but tends to recur.

This fault directly affects the continuous operation capability of the equipment and requires systematic troubleshooting from three aspects: electrical parameters, mechanical load, and hardware status.

II. Fault Cause Analysis and Diagnostic Process

1. Classification of Core Causes

Category	Specific Causes
Parameter Settings	Mismatch of motor parameters (e.g., rated current, number of poles), over-aggressive PID tuning, excessive torque compensation
Load Anomalies	Mechanical jamming, sudden load changes (e.g., drive mechanism failure), increased resistance due to motor bearing damage
Electrical Faults	Output side short circuit/ground fault, cable insulation aging, current detection circuit anomalies (e.g., Hall sensor drift or damage)
Cooling Issues	Poor heat dissipation leading to degraded IGBT module performance and reduced carrier capability

2. Scientific Diagnostic Process

Step 1 – On-site Observation and Data Recording

• Record the operating frequency, current value, and DC bus voltage (readable via the panel’s U0 parameter group) at the time of fault occurrence.
• Check for abnormal noises, temperature rise, or visible mechanical damage in the motor and mechanical load.

Step 2 – Distinguishing Between Load-Side and Electrical-Side Faults

• Disconnect the motor load and run the inverter under no load: If ERR04 disappears, the issue is on the load side; if it persists, check electrical parameters and hardware.
• Use a megohmmeter to test the motor winding insulation to ground (requirement: ≥5MΩ) to rule out ground faults.

Step 3 – Parameter Verification and Waveform Analysis

• Verify the motor nameplate parameters and check if the P0 group (basic parameters) and A2 group (motor parameters) settings match the actual motor.
• Observe the output current waveform for distortions (e.g., excessive harmonics) using an oscilloscope or the inverter’s built-in waveform recording function.

III. Targeted Solutions

1. Parameter Optimization and Adjustment

• Motor Self-Learning: Perform the inverter’s “Motor Parameter Auto-Tuning” (refer to the PA group function in the manual) to ensure stator resistance and inductance values match the actual motor.
• Reduce Torque Compensation: Adjust the P2-21 parameter (constant speed torque compensation coefficient) and gradually reduce it to 80% to 100% for testing.
• PID Parameter Reset: If PID control is applied, reset the PA-03 (proportional gain) and PA-04 (integral time) to their default values to avoid over-tuning.

2. Load-Side Fault Handling

• Mechanical System Inspection: Check coupling alignment, bearing lubrication, and belt tension to eliminate jamming points.
• Load Matching Verification: Ensure the motor power matches the mechanical load to avoid long-term overload operation. For example, a 22kW motor driving a 30kW load requires an upgraded inverter and motor combination.

3. Electrical Hardware Maintenance

• Output Side Insulation Test: Use a 500V megohmmeter to measure the U/V/W terminal insulation to ground. If <5MΩ, replace the motor cable or repair the winding.
• Current Detection Calibration:
  • Check for loose Hall sensor connections.
  • Recalibrate the current detection accuracy using the AC-20 to AC-27 parameters (analog calibration parameters), with a tolerance deviation within ±2%.
• Cooling System Maintenance: Clean the air duct dust, test the cooling fan operation (set temperature threshold via P8-47), and replace aged fans if necessary.

4. Advanced Debugging Techniques

• Carrier Frequency Adjustment: Reduce the carrier frequency in the A5-01 parameter (PWM modulation method) (e.g., from 12kHz to 8kHz) to reduce switching losses and temperature rise.
• Overcurrent Stall Suppression: Enable the P3-19 (overcurrent stall control) and P3-20 (suppression intensity) parameters, setting the action current to 130% to 150% of the rated value.

IV. Preventive Maintenance Recommendations

1. Regular Parameter Backup: Utilize the inverter’s “User Parameter Backup” function (P7 group) to save optimized parameters and prevent失调due to accidental resets.
2. Hardware Inspection Regimen:
   • Quarterly inspection of output terminal tightness to prevent increased contact resistance.
   • Annual thermal imaging scan of IGBT modules and rectifier bridges to address abnormal temperature rise points.
3. Load Monitoring: Install mechanical vibration sensors and current trend recorders for early fault warnings.

V. Maintenance Case Reference

Case Background: An RCP600-22kW inverter for an injection molding machine frequently reported ERR04, operating normally under no load but triggering the fault after 10 minutes under load.

Troubleshooting Process:

• No-load current was 12A (normal), but under load, it rose to 48A (rated current 42A).
• Motor insulation test was normal, but disassembly revealed rusted and jammed reducer bearings.
• After replacing the bearings and adjusting the P2-21 parameter (torque compensation) from 150% to 110%, the fault was resolved.

VI. Summary

Resolving the ERR04 fault requires a three-tiered troubleshooting approach focusing on “parameters, load, and hardware,” combined with real-time data and equipment status analysis. The key is to distinguish between transient overcurrent and sustained overload, avoiding unnecessary component replacements. Through scientific debugging processes and preventive maintenance, the stability of the inverter system can be significantly improved, reducing the risk of unplanned downtime.

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I. Operation Panel Functions and Basic Settings

1. Operation Panel Function Introduction

• Key Functions:
  • RUN Key: Starts the VFD operation; requires configuration of the operation command channel.
  • STOP/RESET Key: Stops the device during operation or resets alarms during fault states.
  • PRG Key: Enters the parameter editing menu, supporting three-level menu navigation (Function Group → Function Code → Parameter Value).
  • Direction Keys (▲/▼): Switches between displayed parameters or adjusts values, supporting cyclic selection and bit modification.
  • FUN Key: Can be customized for jog operation or forward/reverse switching (configured via F7.03).
• Display Area:
  • 5-Digit LED Display: Shows operating frequency, fault codes, parameter values, etc.
  • Status Indicators: Include operating status (RUN/TUNE), forward/reverse (FWD/REV), local/remote control (LOCAL/REMOTE), and fault (TRIP) indicators.

2. Restoring Factory Default Settings

• Steps:
  1. Navigate to Function Group F0 → Select F0.13 (Function Parameter Restore).
  2. Set to 1 (Restore Factory Defaults) → Press the confirmation key (ENT) to save.
• Note: After restoration, key parameters (e.g., motor nameplate data, control mode) must be reconfigured.

3. Password Setup and Access Restrictions

• Setting Password: Input a 4-digit number (range 0~65535) via F7.00 (User Password); non-zero values take effect.
• Removing Password: Set F7.00 to 0 or restore factory defaults.
• Parameter Access Restrictions:
  • A valid password is required to enter editing mode (display “PASS” before input).
  • Some parameters (marked with “-“) are manufacturer-specific and cannot be modified by users.

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II. External Terminal Control and Speed Adjustment Settings

1. External Terminal Forward/Reverse Control

• Terminal Connections:
  • Forward Terminal: X1 (default function code F5.04=1).
  • Reverse Terminal: X2 (default function code F5.05=2).
  • Common Terminal: COM.
• Parameter Settings:
  1. Set F0.01 (Operation Command Channel) to 1 (Terminal Command Channel).
  2. Configure F5.07 (Terminal Control Mode):
     • 0 (Two-Wire Control): X1 for forward, X2 for reverse; both closed stops the drive.
     • 1 (Three-Wire Control): Requires an additional terminal as an enable signal (e.g., configure X3 as “Three-Wire Operation Control”).

2. External Potentiometer Speed Adjustment

• Terminal Connections:
  • Potentiometer Signal Input: VS1 (0~10V) or VS2 (0~10V/4~20mA, selected via jumper).
  • Signal Ground: GND.
• Parameter Settings:
  1. Set F0.03 (Frequency Command Selection) to 2 (Analog VS1) or 3 (Analog VS2).
  2. Calibrate Input Range (Optional): Adjust F5.09~F5.12 (VS1 Upper/Lower Limit Corresponding Values) to ensure 0~10V corresponds to 0%~100% frequency.
  3. For current signals (4~20mA), switch VS2 jumper to current mode (JP2 position).

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III. E-03 Fault Analysis and Solution

1. Fault Definition and Symptoms

• E-03 Fault: Overcurrent during constant-speed operation, triggering protective shutdown. The LED display shows “E-03” and flashes.

2. Possible Causes

• Load Sudden Change: Mechanical jamming, abnormal drive system (e.g., gear damage).
• Power Supply Abnormality: Input voltage fluctuations or instantaneous drops.
• Improper Parameter Configuration: Motor parameters (Group F2) do not match actual values, or carrier frequency (F0.11) is set too high.
• Hardware Issues: Abnormal current detection circuit, aged IGBT module.

3. Solution Steps

• Step 1: Check Load and Mechanical System
  • Disconnect the motor from the load and test under no-load conditions to check if the fault persists.
  • Inspect couplings and bearings for jamming; eliminate mechanical abnormalities.
• Step 2: Optimize Parameter Configuration
  • Adjust F0.11 (Carrier Frequency): Reduce the carrier frequency (e.g., from 8kHz to 4kHz) to reduce switching losses.
  • Calibrate Group F2 (Motor Parameters): Perform motor self-learning (F0.12=1 or 2) to ensure accurate stator resistance and inductance values.
• Step 3: Check Power Supply and Hardware
  • Measure three-phase input voltage to ensure balance deviation <15%.
  • Detect DC bus voltage; if abnormal fluctuations occur, install an input reactor.
  • Troubleshoot current sensor (Hall element) or drive circuit faults; replace modules if necessary.

4. Preventive Measures

• Regularly clean the cooling fan to ensure the inverter module temperature (F7.09) <85°C.
• Enable F8.07 (Automatic Current Limiting Function) and set the current limiting level (F8.07=150%) to suppress sudden overcurrents.

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IV. Conclusion

The AUT-DRIVE DV6000 VFD offers flexible parameter configuration and terminal control functions to meet complex industrial requirements. Operators must strictly follow the manual instructions, perform regular maintenance, and record operational data. For E-03 faults, systematically troubleshoot load, power supply, parameter, and hardware issues, combined with function code adjustments and mechanical maintenance, to ensure stable device operation. Password protection and parameter access restrictions further enhance equipment management security.

I. Product Overview & Core Features

The SJZO Frequency Inverter 200M Series is a high-performance vector control inverter designed for industrial automation, widely applied in motor speed regulation, energy-saving control, and precision drive scenarios. Its core advantages include a wide power range (0.4kW–500kW), high-precision control algorithms, and multifunctional interface design. This guide provides detailed instructions on operating panel functions, parameter setup techniques, external control implementation methods, and common fault troubleshooting.

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II. Operating Panel Functions & Parameter Management

1. Operating Panel Overview

The SJZO 200M Series features an intuitive LCD operating panel supporting the following core functions:

• Start/Stop Control: Directly start or stop the motor via panel buttons.
• Frequency Setting: Adjust output frequency (0–400Hz) via a knob or digital input.
• Parameter Display & Modification: View real-time parameters such as current, voltage, and fault codes.
• Mode Switching: Toggle between local control (panel operation) and remote control (external signals).

2. Password Setup & Removal

（1）Setting a Password

• Access parameter group P7 (Access Control) and locate parameter P7.01 (User Password).
• Enter a 4-digit password (e.g., 1234) and press “Confirm” to save.
• Once enabled, critical parameter modifications require password input.

（2）Removing the Password

• Access P7.01, enter the set password, and change the value to “0000” to remove it.

3. Parameter Access Restrictions

• Hierarchical Access Control:
  • Parameter group P7.02 allows setting different access levels (e.g., Engineer Level, Operator Level) to restrict unauthorized parameter modifications.
  • Example: Setting P7.02 to “1” allows viewing only basic parameters; setting it to “2” grants full parameter modification access.

4. Restoring Factory Default Settings

• Method 1: Panel Operation
  • Press and hold the “Reset” button for 5 seconds until “INI” appears on the screen, then release. Parameters will automatically revert to defaults.
• Method 2: Parameter Setup
  • Access parameter P0.15 (Factory Reset), set it to “1,” and confirm. The inverter will restart with default settings.

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III. External Terminal Forward/Reverse Control & Potentiometer Speed Regulation

1. External Terminal Forward/Reverse Control

（1）Wiring Instructions

• Forward Terminal (e.g., X1): Connect to an external switch signal (normally open contact). Closing the contact starts the motor in the forward direction.
• Reverse Terminal (e.g., X2): Connect to another switch signal. Closing the contact starts the motor in reverse.
• Common Terminal (COM): Provides a reference ground for control signals.

（2）Parameter Setup

• Control Mode Selection:
  • Set P0.01=1 (External Terminal Control Mode).
• Terminal Function Definitions:
  • Set P4.01=1 (X1 as Forward Command), P4.02=2 (X2 as Reverse Command).
• Interlock Protection:
  • Enable P4.10=1 (Forward/Reverse Interlock) to prevent simultaneous activation and short circuits.

2. External Potentiometer Frequency Regulation

（1）Wiring Instructions

• Potentiometer Connection:
  • Connect the potentiometer ends to the inverter’s +10V (power supply) and GND (ground), and the wiper to the analog input terminal AI1 (or AI2).
• Signal Range: 0–10V corresponds to an output frequency range of 0–50Hz (adjustable).

（2）Parameter Setup

• Frequency Source Selection:
  • Set P0.02=2 (Analog Input AI1 as Frequency Setting Source).
• Input Range Calibration:
  • Set P3.01=0 (0–10V input), P3.02=50.00 (corresponding to a maximum frequency of 50Hz).
• Filtering Time:
  • Adjust P3.05=0.1s (to reduce signal jitter interference).

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IV. E.04 Fault Code Analysis & Troubleshooting

1. Fault Definition

E.04 indicates “Output Overcurrent,” meaning the inverter detects motor current exceeding the rated threshold (typically 150%–200%). Common causes include:

• Motor winding short circuits or ground faults.
• Sudden load changes (mechanical jamming, abnormal drive system).
• Excessively short acceleration time (improper P0.07 setting).
• IGBT module damage or drive circuit failure.

2. On-Site Troubleshooting Steps

Step 1: Power-Off Inspection

1. Disconnect power and measure the motor’s three-phase winding resistance to ensure balance (deviation ≤5%) and no grounding (resistance ≥5MΩ).
2. Manually rotate the load to rule out mechanical jamming.

Step 2: Parameter Optimization

1. Extend acceleration time: Adjust P0.07 (Acceleration Time) to 10 seconds or more.
2. Reduce torque compensation: Modify P3.12 (Torque Boost) to 5% or less.

Step 3: Hardware Inspection

1. IGBT Module Testing:
   • Use a multimeter’s diode mode to measure IGBT pins. Normal operation shows forward conduction and reverse cutoff. Replace the module if short-circuited.
2. Current Sensor Check:
   • Compare three-phase output current values. An abnormal phase may indicate a Hall sensor fault.

Step 4: Anti-Interference Measures

1. Separate power and signal lines by ≥20cm.
2. Install ferrite filters at both ends of analog signal lines.

3. Preventive Measures

• Regularly clean cooling air ducts to ensure proper fan operation.
• Avoid frequent starts/stops or overloading.
• Install input reactors (optional) in environments with significant grid voltage fluctuations.

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V. Maintenance & Technical Support

1. Routine Maintenance:
   • Check terminal tightness monthly to prevent poor contact.
   • Clean internal dust and replace aged capacitors quarterly.
2. Professional Support:
   • If the fault persists, contact us or consider equipment recycling services.

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Conclusion

The SJZO Frequency Inverter 200M Series has become a cornerstone device in industrial automation due to its flexible control methods and high reliability. Mastering operating panel functions, external control implementation, and fault troubleshooting techniques can significantly enhance equipment efficiency and lifespan. For E.04 and other common faults, users can resolve issues through systematic troubleshooting. For complex cases, prompt professional support is recommended.

I. Operation Panel Functions and Parameter Management

1. Operation Panel Function Introduction

• Applicable Model: SQ-K01 Operation Panel (Refer to pages 8, 18-23 of the manual)
• Core Functional Modules:
  • Key Functions:
    • Run/Stop: Controls the start/stop of the inverter. Press and hold the “Stop/Reset” key for free stop.
    • Function Key: Toggles between monitoring states and menu levels (Primary Menu → Secondary Menu → Parameter Editing).
    • Save/Confirm Key: Saves parameter modifications and jumps to the next parameter.
    • Shift Key (<<): Switches between monitoring parameters or moves the data editing position.
    • Increment (▲)/Decrement (▼) Keys: Adjusts parameter values or function code numbers.
  • Indicator Lights:
    • FWD/REV: Indicates forward/reverse operation status.
    • H/V/A/r/min: Correspond to display units for frequency, voltage, current, and speed, respectively.
    • Digital Display: 5-digit LED displays parameter values, fault codes, or operational data (e.g., output frequency 50.00Hz).

2. Parameter Initialization

• Steps (Refer to parameter F2.00 on page 29 of the manual):
  1. Enter the primary menu and select -F2- (Auxiliary Settings Group).
  2. Enter the secondary menu and select F2.00 (Parameter Initialization).
  3. Set to 1 to restore factory settings, or 2 to clear fault records.
  4. Press the “Save” key to confirm, and the inverter will restart automatically to take effect.

3. Password Setting and Removal

• Setting Password (Parameter F2.03 on page 29 of the manual):
  1. Enter F2.03 (Parameter Permission Modification Password) and input a value between 0-65535.
  2. After saving, entering this password will be required to modify other parameters.
• Removing Password: Reset F2.03 to 0 to cancel password protection.

4. Parameter Access Restrictions

• Setting Method: Set permissions via F2.01 (Parameter Write Protection) (Refer to page 29 of the manual)
• Permission Options:
  • 0: Allows modification of all parameters (some parameters cannot be modified during operation).
  • 1: Only allows modification of the digital set frequency (F0.02).
  • 2: Prohibits modification of all parameters (only F2.01 and F2.03 can be adjusted).

II. External Terminal Control and Potentiometer Speed Regulation Settings

1. External Terminal Forward/Reverse Control

• Wiring and Parameter Settings (Refer to pages 12-15, 46-48 of the manual):
  • Wiring Terminals:
    • Power Input: L/N (Single-phase 220V) or R/S/T (Three-phase 380V).
    • Control Terminals: X1-X6 are multi-function inputs, COM is the common terminal.
    • Example Wiring: X1 connected to the forward rotation button, X2 connected to the reverse rotation button, both short-circuited with COM to take effect.
  • Parameter Settings:
    1. F0.00: Set to 1 (External Terminal Control Mode).
    2. F4.00-F4.05: Define terminal functions (e.g., X1=5 “Forward Rotation”, X2=6 “Reverse Rotation”).
    3. F4.06: Select control mode (recommended 2 Two-Wire Control Mode 1, FWD/REV independently controlled).

2. External Potentiometer Frequency Speed Regulation

• Wiring and Parameter Settings (Refer to pages 14-15, 36-37, 51 of the manual):
  • Wiring Terminals:
    • Analog Input: AII (0-10V) connected to the middle pin of the potentiometer, COM connected to the negative terminal, 10V terminal connected to the power positive terminal.
    • Jumper Setting: The J1 jumper on the control board needs to be short-circuited to the “V” side (voltage input mode).
  • Parameter Settings:
    1. F0.01: Set to 3 (External Analog Signal AII for Frequency Setting).
    2. F5.00-F5.03: Calibrate the input range (default 0-10V corresponds to 0-100% frequency).
    3. F5.04: Adjust the filtering time (default 0.2 seconds, for anti-interference purposes).

III. Fault Code Analysis and Handling Methods

Common Fault Codes and Solutions (Refer to pages 65-66 of the manual)

Fault Code	Meaning	Solution
E001	Acceleration Overcurrent	Check motor load, extend acceleration time (F0.06).
E004	Acceleration Overvoltage	Increase deceleration time (F0.07), check braking resistor.
E009	Radiator Overheating	Clean the air duct, ensure ambient temperature ≤40℃.
E010	Inverter Overload	Reduce load or increase inverter capacity.
E011	Motor Overload	Adjust F8.01 (Motor Overload Protection Coefficient).
E015	Undervoltage During Operation	Check input power voltage, adjust F8.06 threshold.
E016	EEPROM Read/Write Fault	Restore factory parameters, contact the manufacturer to replace the storage chip.

General Fault Troubleshooting Steps:

1. Power-Off Inspection: Disconnect the power supply for 5 minutes, check for loose or short-circuited wiring.
2. Reset Operation: Press the “Stop/Reset” key to clear the fault and power on again.
3. Parameter Verification: Confirm that key parameters (such as F0.03 maximum frequency, F3 group motor parameters) match the equipment.
4. Contact Support: If the fault persists, record the code and contact the manufacturer (Phone: 17328677949).

IV. Conclusion

The SQ1000 inverter meets complex industrial demands through flexible parameter configuration and diverse control methods. Users must strictly adhere to the safety specifications in the manual (such as grounding and heat dissipation requirements) and perform regular maintenance to extend the equipment’s lifespan. Mastering the operation panel functions, external control settings, and fault handling techniques can significantly improve equipment operational efficiency and stability. It is recommended to keep the manual and refer to it regularly to ensure compliance and safety in operations.

I. Introduction

The Xinshuangyuan AT Series Frequency Inverter is a widely used device in the field of industrial control. Its user manual serves as an essential guide for users to operate and maintain the inverter correctly. This document, based on the contents of the user manual, provides a detailed introduction to the operation panel functions, parameter setting methods, implementation of external control functions, and troubleshooting of fault codes for the AT Series Frequency Inverter, aiming to assist users in better understanding and utilizing the inverter.

II. Introduction to Operation Panel Functions

The operation panel of the Xinshuangyuan AT Series Frequency Inverter is the primary interface for user interaction with the inverter. Through the operation panel, users can perform tasks such as parameter setting, status monitoring, and fault diagnosis. Below is an introduction to the functions of each key on the operation panel:

• Programming Key: Used to select between normal mode and programming mode. This key is effective whether the inverter is running or stopped. To modify parameters, users must press this key to enter programming mode.
• Function/Save Key:
  • Normal Mode: Pressing this key displays various information about the inverter’s status, such as target frequency, output frequency, current, and temperature.
  • Programming Mode: Pressing this key displays parameter contents and, when pressed again, saves any changed parameter values.
• ▲ Key: Increases parameter numbers or values. A short press results in step-by-step changes, while a long press leads to rapid changes.
• ▼ Key: Decreases parameter numbers or values.
• Shift Key: Used for shifting in programming mode and jogging in normal mode.
• Forward/Reverse Key: Toggles between forward and reverse rotation.
• Start Key: Initiates the output of the inverter.
• Stop/Reset Key: Stops operation and resets faults.

III. Parameter Setting and Password Management

1. Parameter Initialization

Although the user manual does not directly mention the steps for parameter initialization, users can achieve it through the following method:

• Enter programming mode and locate the parameter group that needs to be initialized.
• Restore the parameter values to their defaults.
• Save the parameters and exit programming mode.

2. Password Setting

To protect the inverter’s parameters from unauthorized modifications, users can set a password. Below are the relevant parameters for password setting:

• P008: Hidden password, with a range of 0-65535 and a default value of 00000 (no password). Users can set a password as needed.
• P009: Password input. When the value of P009 equals the hidden value of P008, P008 and other parameter values can be changed. After a power-off restart, P009 will be cleared, and the password must be re-entered to modify parameters.

3. Parameter Access Restrictions

Some parameters of the Xinshuangyuan AT Series Frequency Inverter are only applicable to certain models. For example, gray parameters are exclusive to advanced models with PID/485 functions and are invalid for standard models. Additionally, specific parameters are exclusive to the AT2 model (such as P97, P98) and time counter models (such as *93, *94). Users should pay attention to the applicable range of parameters when setting them.

IV. Implementation of External Control Functions

1. External Terminal Forward/Reverse Control

The Xinshuangyuan AT Series Frequency Inverter supports external terminal forward/reverse control. Below is the wiring method for the AT3 model:

• X4 Input Port 4: Line-controlled forward rotation. Short-circuiting X4 with COM activates the input signal.
• X5 Input Port 5: Line-controlled reverse rotation. Short-circuiting X5 with COM activates the input signal.

For AT1, AT4, and AT2 models, although the user manual does not directly mention the specific terminals for external terminal forward/reverse control, users can achieve forward/reverse control through multifunction input settings.

2. External Potentiometer Frequency Regulation

The Xinshuangyuan AT Series Frequency Inverter supports external potentiometer frequency regulation. Below are the wiring and parameter setting methods:

• Wiring: Users can achieve external potentiometer frequency regulation through external analog voltage input (VI1, 0-5V/10V) or external current signal input (CI, 4-20mA). Refer to the wiring diagram in the user manual for specific wiring methods.
• Parameter Settings:
  • P010: Source of operating frequency. Select external analog signal (2) or CI (3) as the frequency source.
  • Other relevant parameters (such as P000-P007) may need to be adjusted to match the input range of the external potentiometer.

V. Fault Codes and Troubleshooting Methods

The Xinshuangyuan AT Series Frequency Inverter provides detailed fault codes and troubleshooting methods. Below are some common fault codes and their corresponding troubleshooting methods:

• Err 1: Overcurrent/Output Short Circuit
  • Troubleshooting Method: Check the output circuit and motor for short circuits, and eliminate any short-circuit faults.
• Err 2: Undervoltage Protection
  • Troubleshooting Method: Check if the input power supply voltage is normal and eliminate any issues with low power supply voltage.
• Err 3: Overvoltage Protection
  • Troubleshooting Method: Check if the input power supply voltage is too high or if there is a fault in the inverter’s internal voltage detection circuit.
• Err 4: Drive Circuit Fault
  • Troubleshooting Method: Contact professional maintenance personnel to inspect and repair the drive circuit.
• Err 5: Start Input During Power-On
  • Troubleshooting Method: Check if there is an accidental start signal input during power-on and eliminate any misoperations or circuit faults.
• Err 6: Overcurrent Protection
  • Troubleshooting Method: Check if the motor and load are overloaded or if there is a fault in the inverter’s internal current detection circuit.
• Err 7: Timeout
  • Troubleshooting Method: Check the inverter’s runtime settings or related timer settings and eliminate any timeout faults.
• Err 8: Radiator Overheating
  • Troubleshooting Method: Check if the radiator is blocked, if the ambient temperature is too high, or if there is a fault in the inverter’s internal temperature detection circuit.
• Err 9: External Fault
  • Troubleshooting Method: Check the external control signal lines and equipment and eliminate any external faults.

VI. Conclusion

The user manual for the Xinshuangyuan AT Series Frequency Inverter is an essential guide for users to operate and maintain the inverter correctly. This document, based on the contents of the user manual, provides a detailed introduction to the operation panel functions, parameter setting methods, implementation of external control functions, and troubleshooting of fault codes. It is hoped that this document can assist users in better understanding and utilizing the Xinshuangyuan AT Series Frequency Inverter, thereby improving the operational efficiency and reliability of the equipment. In practical applications, users should refer to the user manual for operation and maintenance according to their specific needs and equipment models.

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The MIKOM MV series inverter is a crucial device in the field of industrial automation, and its user manual elaborates on key aspects such as equipment operation, parameter settings, and troubleshooting. This article provides systematic guidance on four core modules: operation panel functions, parameter settings, external control, and fault handling, based on the content of the manual.

1. Operation Panel Function Analysis

The operation panel is the direct interface for users to interact with the inverter, designed with both functionality and ease of use in mind. The panel’s main components include an LED display, function keys, and status indicators. The LED display shows real-time operating parameters such as output frequency, current, and voltage, and indicates operational status (e.g., RUN/STOP) and fault codes (e.g., Er.XX) through symbols. The function keys are clearly arranged, including:

• MENU/ESC Key: Used to enter the parameter settings menu or exit the current operation interface.
• ENTER Key: Confirms parameter modifications or enters submenus.
• RUN/STOP Key: Controls the inverter’s start and stop; pressing and holding it initiates emergency stop.
• MK Key: A multifunctional key whose function is defined by parameter P50.03 (e.g., inching control, free stop).
• Increment/Decrement Keys (>, <): Adjust parameter values or switch display pages.
• Shift Key (>>): Selects operation bits during parameter modification or cycles through display interfaces.

By using these keys in combination, users can perform operations such as parameter browsing, modification, and device control. For example, pressing and holding the MENU key for 3 seconds enters the password verification interface, where entering the correct password grants access to protected parameters.

2. Parameter Settings and Security Protection

1. Restoring Factory Default Parameters
To restore the device to its initial state, you can select the restoration range through parameter P50.20:

• P50.20=0: Restores basic menu parameters (P00-P19 groups).
• P50.20=1: Restores advanced menu parameters (P20-P49 groups).
• P50.20=2: Restores user-defined menu parameters (P50-P99 groups).

Operation steps: Enter the menu → select P50.20 → press ENTER to confirm → use the increment/decrement keys to choose the restoration range → press ENTER again to execute.

2. Password Setting and Removal
To prevent accidental operations, a user password can be set via parameter P50.00:

• Setting the password: Enter P50.00 → input a 4-digit password → press ENTER to confirm → the password takes effect after 1 minute of inactivity.
• Password verification: The system prompts for password entry when modifying protected parameters.
• Password removal: Power cycle the device or enter the correct password and press ENTER to lift protection.

3. Parameter Access Restrictions
Three levels of protection can be set via parameter P50.02:

• P50.02=0: No protection; all parameters can be modified.
• P50.02=1: Partial parameters locked (e.g., P00 group basic parameters are accessible, P20 group advanced parameters are locked).
• P50.02=2: All parameters locked; modifications require a password.

Additionally, the thousand’s place of parameter P50.03 can lock operation panel keys (e.g., disabling RUN/STOP operations), further enhancing security.

3. External Control Function Implementation

1. External Terminal Forward/Reverse Control
Configure terminal functions via parameter P10 group:

• Forward control: Set P10.01=1 (DI1 terminal as forward command).
• Reverse control: Set P10.02=2 (DI2 terminal as reverse command).
• Combined logic: Set multi-terminal combined logic via P10.03-P10.06 (e.g., DI1+DI3 for forward inching).

Wiring example: Connect the forward button to the DI1 terminal and COM terminal, and the reverse button to the DI2 terminal and COM terminal.

2. External Potentiometer Frequency Adjustment
Implementation steps:

• Parameter settings: Enter the P12 group → set P12.01=1 (AI1 as frequency reference source) → P12.03=0 (0-10V corresponds to 0-50Hz).
• Hardware wiring: Connect an external potentiometer (10kΩ) to AI1 (terminal 10) and GND (terminal 11).
• Debugging tips: Rotate the potentiometer and observe if the frequency value displayed on the LED changes linearly. Adjust P12.04 (filter time) if fluctuations occur.

4. Fault Codes and Handling Procedures

The manual lists over 20 fault codes and solutions. Below is a guide to common fault handling:

Fault Code	Fault Description	Possible Causes	Handling Steps
Er.01	Acceleration overcurrent	Sudden load change, short acceleration time	Extend acceleration time (P01.01), check load
Er.02	Deceleration overcurrent	Braking resistor failure, short deceleration time	Check braking unit, extend deceleration time (P01.02)
Er.07	Input phase loss	Poor power line contact	Check input voltage and wiring
Er.11	Motor overload	Excessive load, motor fault	Reduce load, check motor insulation
Er.15	Communication fault	Loose communication cable, protocol mismatch	Check wiring, verify communication parameters (P30 group)

Fault troubleshooting process:

1. Record the fault code (displayed on the LED or query historical records via P34 group).
2. Identify the cause using the fault list in the manual.
3. Follow the recommended steps (e.g., check power supply, adjust parameters, replace components).
4. Clear the fault record (P34.01=1) and restart the device.

5. Maintenance and Extended Functions

1. Communication Function
The device supports the Modbus RTU protocol (P30 group) and can be monitored via PLC or a host computer through an RS485 interface. Parameter settings example:

• P30.01=1 (Enable Modbus)
• P30.02=9600 (Baud rate)
• P30.03=2 (8 data bits, 1 stop bit, no parity)

2. Maintenance Recommendations

• Clean the cooling fan and filter regularly (every 6 months).
• Check the electrolyte capacitor capacity (every 2 years; replace if below 80%).
• Back up parameters (export to external storage via P50.21).

6. Conclusion

This article systematically summarizes the operation logic and advanced functions of the MIKOM MV series inverter based on the user manual. By mastering panel operations, parameter management, external control, and fault handling skills, users can significantly enhance equipment efficiency and safety. It is recommended to deepen understanding through practical operations and the manual’s diagrams, and to regularly attend manufacturer training to stay updated on technical advancements.

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I. Panel Function Introduction and Parameter Management Operations

1. Panel Function Introduction

The operation panel of the RiHong CHRH-G series inverter includes the following core buttons and indicators:

• RUN Key: Starts the inverter operation, defaulting to forward rotation.
• STOP/RESET Key: Stops the machine or resets faults.
• PRG Key: Enters parameter setting mode.
• ENTER Key: Saves parameter modifications.
• ▲/▼ Keys: Adjusts parameter values or switches monitoring items.
• ◄/► Keys: Modifies parameter digits or switches function groups.
• Analog Potentiometer: Manually adjusts frequency (requires setting the frequency reference channel to potentiometer mode).

LED Indicator Descriptions:

• Hz: Displays frequency unit.
• A/V: Displays current or voltage unit (green for current, red for voltage).
• ALM: Fault alarm indicator (red constantly lit or flashing).
• F/R: Rotation direction indicator (red for forward, green for reverse).

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2. Parameter Factory Default Settings

Steps:

1. Enter function code F0.13 (Parameter Initialization).
2. Set to 1 (Restore factory settings, retaining motor parameters) or 2 (Restore all parameters).
3. Press the ENTER key to confirm; the system will automatically exit after completion.

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3. Parameter Encryption and Decryption

Encryption Setup:

1. Enter function code FC.05 (User Password) and set a password (range: 10~65535).
2. Set function code F0.14 (Parameter Write Protection) to 2 (Prohibit modification of all parameters).

Decryption Operation:

1. After entering the correct password, set F0.14 to 0 or 1 to lift the protection.

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4. Parameter Access Restrictions

Set access permissions via F0.14:

• 0: Allows modification of all parameters (in stop state).
• 1: Only allows modification of frequency-related parameters (F0.02~F0.08).
• 2: Completely prohibits modification of parameters.

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

1. External Terminal Forward/Reverse Control

Wiring Terminals:

• X1/X2/X3: Multi-function input terminals (default functions need redefinition).
• COM: Common terminal.

Parameter Settings:

1. Set F0.01 (Operation Command Channel) to 1 (Terminal Control).
2. Set F5.00 (X1 Function) to 12 (Forward Control) and F5.01 (X2 Function) to 13 (Reverse Control).
3. The corresponding direction starts when the terminal is closed and stops when disconnected.

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2. External Potentiometer Speed Regulation

Wiring Terminals:

• AI1: Analog Input 1 (0~10V/0~20mA).
• GND: Signal ground.

Parameter Settings:

1. Set F0.02 (Frequency Reference Channel) to 4 (AI1 Analog Reference).
2. Calibrate the AI1 input range via F6.00~F6.03 (default: 0~10V corresponds to 0~maximum frequency).
3. Adjust the potentiometer to regulate the output frequency in real-time.

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III. Fault Code Analysis and Solutions

Fault Code	Meaning	Possible Causes	Solutions
E001	Acceleration Overcurrent	Acceleration time too short, sudden load change	Extend acceleration time, check load
E005	Deceleration Overvoltage	Deceleration time too short, inertial load	Extend deceleration time, install braking resistor
E009	Power Module Fault	Output short circuit, poor heat dissipation	Check motor wiring, clean air ducts
E010	Heatsink Overheating	High ambient temperature, fan failure	Improve ventilation, replace fan
E013	External Device Fault	External fault signal input	Check external device wiring
E021	Operation Time Limit Reached	Cumulative operation timeout	Contact dealer to lift restriction
E022	Output Phase Loss	Loose or broken motor wiring	Check U/V/W terminal connections

General Fault Handling Steps:

1. Press the STOP/RESET key to reset.
2. Check monitoring parameters (d-21~d-28) to record the operating state during the fault.
3. Adjust relevant parameters or check hardware connections according to the manual.

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IV. Maintenance and Precautions

Daily Maintenance:

• Regularly clean the heat dissipation air ducts to ensure proper fan operation.
• Check terminal screws for looseness to avoid poor contact.

Insulation Testing:

• Disconnect all wiring, short-circuit the main circuit terminals, and test with a 500V megohmmeter.
• Do not perform insulation tests on control terminals.

Long-Term Storage:

• Store in a dry environment and power on every six months to activate electrolytic capacitors.

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Conclusion

The RiHong CHRH-G series inverter meets diverse industrial scenario demands through flexible terminal control, parameterized configuration, and multiple protection functions. Users must master panel operations, parameter logic, and fault troubleshooting methods to ensure efficient and stable operation of the equipment. For complex issues, it is recommended to contact the manufacturer’s technical support for professional guidance.

I. Introduction to the Operation Panel Functions and Parameter Settings

1.1 Overview of Operation Panel Functions

The Rhymedbus Inverter RM6 series comes equipped with an intuitive and user-friendly operation panel, which includes the following key functions:

• Power Indicator: Displays the power status of the inverter.
• Frequency Unit Indicator: Shows the current set or actual frequency unit (Hz).
• Voltage Unit Indicator: Displays the current voltage unit (V).
• Current Unit Indicator: Displays the current current unit (A).
• Program Key (PROG): Used to switch between parameter setting mode and monitoring mode.
• Function/Data Key (FUNC DATA): Enters parameter setting mode, returns to the set item, and switches monitoring screens.
• Set Knob: Adjusts frequency commands or other parameter settings.
• Run Key (RUN): Starts the inverter.
• Stop/Reset Key (STOP RESET): Stops the inverter or clears abnormal states.
• Increase/Decrease Keys: Used to change set items and parameter values.

1.2 Restoring Parameters to Factory Defaults

To restore the inverter parameters to their factory default settings, follow these steps:

1. Enter Parameter Setting Mode: Press the “PROG” key to enter parameter setting mode.
2. Select Factory Default Setting: Use the Increase/Decrease keys to select the F_000 (Inverter Information) parameter item.
3. Choose Factory Default Restoration: Continue using the Increase/Decrease keys to select the corresponding factory default restoration option (e.g., dEF60 for 60Hz general-purpose factory defaults).
4. Confirm Restoration: Press the “FUNC DATA” key to confirm restoring the factory defaults.

1.3 Password Setting and Removal

The RM6 series inverter supports parameter locking to prevent unauthorized parameter modifications.

• Setting a Password: Enter the F_213 (Parameter Lock Password Input) parameter item, use the Set Knob to enter the password value (0-9999), and press the “FUNC DATA” key to confirm.
• Removing a Password: Enter the F_214 (Parameter Lock Decoding Input) parameter item, enter the password value, and press the “FUNC DATA” key to confirm, thereby removing the password lock.

1.4 Setting Parameter Access Display

Users can set the access level and display content of parameters according to their needs:

• Parameter Access Level: Set through the F_212 (Parameter Lock Parameter Display Selection) parameter item, which can choose whether to display locked parameters.
• Monitoring Screen Selection: In monitoring mode, use the “FUNC DATA” key to switch between different monitoring screens, such as output frequency, voltage, current, etc.

II. External Terminal Control and Speed Regulation Function Implementation

2.1 External Terminal Forward and Reverse Control

The RM6 series inverter supports forward and reverse control of the motor through external terminals, requiring the following wiring and settings:

• Wiring:
  • Connect the external control signals (such as buttons or relay contacts) to the inverter’s forward terminal (FWD) and reverse terminal (REV) respectively.
  • Ensure the common terminal (COM) is connected correctly.
• Parameter Settings:
  • Enter the F_001 (Start Control Selection) parameter item and set it to 0 or 1 (depending on the specific control mode).
  • Ensure the F_003 (Operator STOP Key Priority) parameter item is set to allow external terminal control (e.g., set to 0).

2.2 External Potentiometer Speed Regulation Function

Speed regulation of the inverter can be achieved through an external potentiometer, requiring the following wiring and settings:

• Wiring:
  • Connect the output terminal of the external potentiometer to the inverter’s Vin (analog input voltage) terminal.
  • Ensure the potentiometer’s common terminal and the other output terminal are connected to the inverter’s GND (ground) and Vin+ terminals respectively.
• Parameter Settings:
  • Enter the F_002 (Main Frequency Command Selection) parameter item and set it to 1 (controlled by analog signal).
  • Enter the F_124 (Analog Input Selection (Vin)) parameter item and ensure it is set to 1 (enable Vin input).

III. Fault Codes and Troubleshooting Methods

The RM6 series inverter features comprehensive fault diagnosis functionality. When a fault occurs, the corresponding fault code will be displayed on the operation panel. Here are some common fault codes, their meanings, and troubleshooting methods:

• EEr: EEPROM error protection. Possible causes include EEPROM data write errors or EEPROM component failures. The troubleshooting method is to restore all parameter settings to factory defaults and reboot. If the error persists, send it for repair.
• AdEr: A/D converter error protection. Possible cause is A/D converter failure. The troubleshooting method is to contact customer service for repair.
• GF: Ground fault protection. Possible causes include grounding of the inverter output or poor insulation of the motor and motor wires. The troubleshooting method is to check the insulation of the motor and motor wires, and replace them if necessary.
• OE: Overvoltage protection. Possible cause is excessively high DC bus voltage inside the inverter. Troubleshooting methods include increasing the deceleration time setting, installing a dynamic brake unit, checking if the power supply voltage is within the rated input range of the inverter, etc.
• OL: Motor overload protection. Possible cause is long-term overload operation of the motor. The troubleshooting method is to check the usage of the mechanical equipment and ensure the load is within the motor’s rated range.

When a fault occurs in the inverter, first check the fault code displayed on the operation panel and follow the troubleshooting guide in the user manual for corresponding actions. If the issue cannot be resolved by the user, professional maintenance personnel or customer support should be contacted promptly.

IV. Conclusion

The Rhymedbus Inverter RM6 series user manual provides detailed operation guidelines and fault handling information, helping users better understand and utilize the inverter. By familiarizing themselves with the operation panel functions, mastering parameter setting methods, understanding the implementation of external terminal control and speed regulation functions, and being familiar with fault codes and troubleshooting methods, users can operate and maintain the inverter equipment more efficiently. In practical applications, users should flexibly configure inverter parameters and functional options according to specific needs and site conditions to achieve optimal control effects and operational efficiency.