Category: Yaskawa

The Yaskawa V1000 series inverter, as a high-performance vector control inverter, is widely used in various industrial drive systems. This article will provide a detailed introduction to the operation panel functions, basic setting methods, common function applications, and fault code analysis of this inverter, helping users better understand and utilize this equipment.

I. Introduction to Operation Panel Functions and Basic Settings

1. Introduction to Operation Panel Functions

The operation panel of the Yaskawa V1000 series inverter integrates rich display and control functions, mainly including the LED operator, LO/RE indicator light, RUN indicator light, etc. Users can perform parameter settings, mode switching, operation monitoring, and other operations through the operation panel.

2. How to Set and Clear Passwords

To protect the inverter parameters from being modified arbitrarily, users can set a password. The specific steps are as follows:

• Setting a Password: In the parameter setting mode, find A1-04 (password setting), enter the desired password value, and then press the ENTER button to confirm. Next, enter the same password value in A1-05 (password) for confirmation.
• Clearing a Password: To clear the set password, simply set the password values in both A1-04 and A1-05 to 0.

3. Parameter Initialization

When it is necessary to restore the inverter to its factory default settings, parameter initialization can be performed. The specific steps are as follows:

• In the parameter setting mode, set A1-03 to 2220 (2-wire sequence control initialization) or 3330 (3-wire sequence control initialization), and then press the ENTER button to confirm. At this point, the inverter will be restored to its factory default settings.

4. Using the DWELL Function

The DWELL function can temporarily maintain the output frequency during motor startup or stoppage to prevent motor stall. The specific setting steps are as follows:

• In the parameter setting mode, find b6-01 and b6-02, and set the DWELL frequency and time during startup respectively. For example, set b6-01 to 5Hz and b6-02 to 2s, so that the motor will maintain a 5Hz output for 2 seconds during startup.

5. Using the Speed Search Function

The speed search function can automatically search and set the appropriate output frequency when the motor stalls or restarts. The specific usage method is as follows:

• In the parameter setting mode, set b3-05 to the speed search wait time (e.g., 1s). Then, trigger the speed search function through an external signal when needed, and the inverter will automatically search and set the appropriate output frequency.

II. Terminal Functions and Wiring Settings

1. Realizing Forward and Reverse Start/Stop Functions

To realize the forward and reverse start/stop functions of the motor, it is necessary to correctly wire and set relevant parameters. The specific steps are as follows:

• Wiring: Connect the forward start signal to terminal S1, the reverse start signal to terminal S2, and the stop signal to terminal S3.
• Parameter Settings: In the parameter setting mode, set b1-02 to 1 (LOCAL/REMOTE selection), and set H1-01 and H1-02 to the input terminals for forward and reverse commands (e.g., S1 and S2) respectively. At the same time, set H1-03 to the input terminal for the stop command (e.g., S3).

2. Realizing External Potentiometer Speed Regulation

The external potentiometer speed regulation function allows users to change the output frequency of the inverter by adjusting the resistance value of an external potentiometer. The specific implementation method is as follows:

• Wiring: Connect the output signal of the external potentiometer to terminal A1 of the inverter (multi-function analog input terminal).
• Parameter Settings: In the parameter setting mode, set b1-01 to 1 (control circuit terminal frequency command), and set H3-01 to 0 (0~10V input). At the same time, adjust the values of H3-04 (input gain) and H3-05 (input offset) according to actual needs.

III. Fault Code Analysis

The Yaskawa V1000 series inverter has a comprehensive fault diagnosis function. When a fault occurs in the inverter, the corresponding fault code will be displayed on the operation panel. The following are some common fault codes, their meanings, and solutions:

• CPF02: A/D converter fault. Possible causes include control circuit damage, control circuit terminal short circuit, etc. Solutions include checking the control circuit connection and replacing the inverter.
• CPF06: EEPROM data anomaly. Possible causes include control circuit damage, power being cut off during the initialization process, etc. Solutions include re-executing the initialization operation and replacing the inverter.
• Uv1: Main circuit undervoltage. Possible causes include too low power supply voltage, power supply phase loss, etc. Solutions include checking the power supply voltage and power supply wiring.
• oH1: Heatsink overheat. Possible causes include too high ambient temperature, excessive load, etc. Solutions include improving heat dissipation conditions and reducing the load.

When a fault occurs in the inverter, users should refer to the fault code displayed on the operation panel, combine the above analysis methods and solutions for troubleshooting and handling. If the problem cannot be solved, users should promptly contact professional technicians for repair.

IV. Conclusion

The Yaskawa V1000 series inverter, as a high-performance vector control inverter, boasts rich functions and flexible setting options. Through the introduction in this article, users can better understand and utilize this equipment to achieve precise motor control and efficient operation. At the same time, users should also regularly check and maintain the inverter to ensure its long-term stable operation.

The Yaskawa Inverter A1000 Series is a high-performance vector control inverter widely used in various industrial control applications. This document aims to provide users with a detailed guide, covering the function explanation of the operation panel, password setting and cancellation, parameter initialization settings, external terminal start/stop and potentiometer speed adjustment settings, as well as common fault codes and troubleshooting methods.

I. Function Explanation of the Operation Panel (Operator)

The operation panel of the Yaskawa Inverter A1000 Series integrates multiple functions, facilitating user parameter settings and status monitoring. Below are the main functions of the operation panel:

1. Display and Operation: The operation panel features an LED display and multiple operation keys, including the “LOCAL/REMOTE” key and the “STOP” key, allowing users to perform local or remote operations and stop the inverter.
2. Password Setting and Cancellation:
   • Password Setting: Enter the parameter setting mode and set the password by configuring A1-04 (Password) and A1-05 (Password Setting). The specific steps are: First, press the “ESC” key to enter the parameter setting mode, then select A1-05 and input the password value, and finally press the “ENTER” key to confirm.
   • Password Cancellation: To cancel the set password, set A1-04 (Password) to the same value as A1-05 (Password Setting), then re-enter the parameter setting mode and set both A1-04 and A1-05 to 0.
3. Parameter Initialization Settings: Set A1-03 (Initialization) to choose different initialization methods. Common options include:
   • 1110: Initializes based on user settings, restoring parameters to user-saved values.
   • 2220: Initializes for 2-wire sequential control, restoring factory settings for 2-wire sequential control.
   • 3330: Initializes for 3-wire sequential control, restoring factory settings for 3-wire sequential control.
   • 5550: Resets oPE04, used for parameter reset after replacing the detachable terminal block.

II. External Terminal Start/Stop and Potentiometer Speed Adjustment Settings

To enable external terminal start/stop and potentiometer speed adjustment functions for the Yaskawa Inverter A1000 Series, the following parameter and wiring settings are required:

1. Parameter Settings:
   • Set b1-01 (Run Command Selection 1) to 2, selecting external terminal run commands.
   • Set b1-02 (Run Command Selection 2) to 0, selecting the 2-wire sequential control mode for forward/stop and reverse/stop (or select other modes as needed).
   • Set H1-01 and H1-02 to 40 and 41, respectively, assigning the S1 and S2 terminals as input for forward and reverse run commands.
2. Wiring Settings:
   • Connect the external start/stop buttons to the S1 and S2 terminals.
   • Connect the center tap of the potentiometer to the common terminal of the inverter (e.g., 0V), and connect the ends of the potentiometer to the analog input terminals of the inverter (e.g., A1 and +V or -V) to achieve potentiometer speed adjustment.

III. Common Fault Codes and Troubleshooting Methods

The Yaskawa Inverter A1000 Series may encounter various faults during operation. Below are some common fault codes, their meanings, and troubleshooting methods:

1. oL1 (Motor Overload):
   • Meaning: The motor current exceeds the rated value, triggering the overload protection.
   • Troubleshooting: Check if the motor load is too heavy, adjust the load or increase the motor capacity; check the motor wiring for correctness to avoid line-to-line shorts; check the inverter parameter settings to ensure the motor parameters match the actual motor.
2. Uv1 (Main Circuit Undervoltage):
   • Meaning: The main circuit DC voltage is lower than the set value.
   • Troubleshooting: Check if the power supply voltage is stable and within the allowable range; check the power wiring for firmness to avoid poor contact; check if the internal capacitors of the inverter are aged or damaged.
3. oH1 (Inverter Overheat):
   • Meaning: The internal temperature of the inverter is too high, triggering the overheat protection.
   • Troubleshooting: Check the installation environment of the inverter to ensure adequate ventilation; check if the inverter heat sink is clean and free of dust accumulation; check if the cooling fan is working properly and replace it if faulty.
4. oPE03 (Improper Selection of Multi-function Input):
   • Meaning: There is a conflict or error in the function assignment of the multi-function input terminals.
   • Troubleshooting: Check the parameter settings of H1-01 to H1-08 to ensure the function assignment of each terminal is correct and without duplication; check if any unused terminals have been assigned functions mistakenly.
5. Er-11 (Motor Speed Fault):
   • Meaning: During rotary self-learning, the motor speed is abnormal.
   • Troubleshooting: Check the connection between the motor and the inverter for correctness; check the wiring and settings of the PG (encoder); re-perform self-learning with the motor and mechanical system connected.

The above are only some common fault codes and their troubleshooting methods. In actual use, other faults may occur. Users should refer to the fault code table in the inverter user manual and take corresponding measures based on specific fault codes and meanings. Additionally, regular maintenance and inspection of the inverter are important means to prevent faults.

I. Operation Panel Function Introduction and Usage Instructions

The operation panel of the Yaskawa Inverter H1000 series serves as its control hub, enabling parameter setting, monitoring of operating status, and fault diagnosis. The primary buttons and functions on the operation panel include:

• ESC: Exits the current mode or cancels operations.
• RUN: Starts the inverter.
• STOP: Stops the inverter.
• ENTER: Confirms inputs or enters parameter settings.
• RESET: Resets faults.
• ALM: Displays fault or warning messages.
• DIGIT: Selects digits during parameter setting.
• OPRATOR: The operation panel display, which shows various information and parameters.

Parameter Initialization

Parameter initialization restores the inverter’s settings to the factory defaults. The steps are as follows:

1. Enter Initialization Mode: Press the “ESC” button on the operation panel, then press “ENTER” to enter the parameter setting mode.
2. Select Initialization Parameter: Use the “DIGIT” buttons to select parameter “A1-03” and press “ENTER”.
3. Set Initialization Value: Set the value of “A1-03” to “2220” or “3330” for initialization of 2-wire or 3-wire sequential control, respectively.
4. Confirm and Save: Press “ENTER” to confirm the setting, and the inverter will automatically restart and complete the initialization.

Setting and Resetting Passwords

To protect the inverter settings from unauthorized changes, passwords can be set. The steps are as follows:

1. Enter Password Setting Mode: In the parameter setting mode, select “A1-04” and press “ENTER”.
2. Enter Password: Use the “DIGIT” buttons to input a 4-digit password and press “ENTER” to confirm.
3. Confirm Password: Enter the same password again to confirm the setting and press “ENTER”.

To reset the password, simply enter the correct password in the password input interface to unlock the parameter settings.

II. Terminal Start/Stop and External Potentiometer Speed Adjustment

To achieve terminal start/stop and external potentiometer speed adjustment, the corresponding control terminals need to be connected and parameters set accordingly.

Wiring Instructions

1. Start/Stop Terminals: Typically, use terminals S1 (Run) and S2 (Stop). Closing (connecting) terminal S1 starts the inverter, while closing terminal S2 stops it.
2. External Potentiometer: Use terminal A1 as the input terminal for the external potentiometer. Connect the potentiometer’s output to terminal A1 and adjust the potentiometer to change the frequency command.

Parameter Settings

1. Run Command Selection: Set parameter “b1-01” to “10” to select the operation panel as the frequency command source.
2. Multi-function Input Settings: Set parameter “H1-01” to “04” (Run command) and “H1-02” to “05” (Stop command), corresponding to the functions of terminals S1 and S2, respectively.
3. Analog Input Gain and Offset: Adjust parameters “H3-03” (Gain) and “H3-04” (Offset) according to the output range of the external potentiometer to ensure that the frequency command changes proportionally with the potentiometer output.

III. Crane Control Wiring and Parameter Setup

In crane applications, special attention must be paid to safety control and precise speed regulation.

Wiring Instructions

1. Main Circuit Wiring: Connect the inverter’s R/L1, S/L2, and T/L3 terminals to the crane motor according to its voltage and power requirements.
2. Control Circuit Wiring: In addition to the basic start/stop terminals, emergency stop, limit switches, and other safety control terminals also need to be connected.
3. PG (Encoder) Wiring: For cranes requiring precise speed control and positioning, connect the PG encoder and output its signals to the inverter’s PG option card.

Parameter Settings

1. Control Mode Selection: Set parameter “A1-02” to the appropriate vector control mode (e.g., Vector Control with PG) to ensure precise speed and position control.
2. PG Parameter Settings: Set parameters such as “F1-06” (PG Output Division Ratio) and “F1-12/F1-13” (PG Gear Ratio) according to the encoder specifications.
3. Safety Function Settings: Enable the external emergency stop function and set the relevant parameter, such as “H2-01” (Multi-function Contact Output Selection), to output an emergency stop signal.
4. Speed Search Function: For heavy-duty applications like cranes, it is recommended to enable the speed search function to improve stability and safety during startup. Set parameter “b3-01” to effective and adjust other related parameters as needed.

IV. Fault Code Meanings and Solutions

The Yaskawa Inverter H1000 series has comprehensive fault self-diagnosis functions. When a fault occurs, the operation panel will display the corresponding fault code. Below are the meanings of some common fault codes and their solutions:

• CPF00/CPF01: Control circuit fault. Possible causes include incorrect control circuit wiring or damaged circuit boards. The solution is to check the control circuit wiring and replace the circuit board if necessary.
• oH: Overheating of the heatsink. Possible causes are high ambient temperature, excessive load, or a faulty cooling fan. The solution is to improve ventilation, reduce the load, or replace the cooling fan.
• Uv: Undervoltage in the main circuit. Possible causes are low supply voltage or phase loss in the power supply. The solution is to check the supply voltage and wiring to ensure they are normal.
• oL1: Motor overload. Possible causes are excessive load or improper motor parameter settings. The solution is to reduce the load or reset the motor parameters.

When a fault occurs in the inverter, first check the fault code displayed on the operation panel to identify the cause and follow the corresponding solution. If the issue cannot be resolved, promptly contact a professional technician for repairs.

Through this operation guide, users can better understand and operate the Yaskawa Inverter H1000 series, ensuring its stable operation in various applications.