Category: Industrial control technology

Debugging, application, and maintenance techniques for industrial control products，Such as Variable speed driver(VSD),Variable frequency driver(VFD),Industrial touch screen,Programmable Logic Controller(PLC),Servo Driver,servo motor,servo amplifier,Servo Controller,etc.

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User Guide for Delta VFD MS300 Series: Operation Panel Usage, Startup and Debugging of VFD Terminal Mode, Analysis and Solutions for VFD Fault Codes

Delta VFD MS300 Series User Guide

I. Operating Panel Usage

  1. Power-On and Display
    • Upon powering on, the VFD automatically conducts a self-test and then enters standby mode. The display on the operating panel shows the current status and parameters.
  2. Function Key Operations
    • RUN/STOP Button: Press RUN to start the VFD and STOP to halt its operation.
    • Direction Selection (FWD/REV): Used to select forward or reverse rotation for the motor.
    • Frequency Adjustment Keys: Adjust the output frequency using the up and down arrow keys. In automatic mode, these keys may be disabled.
    • MENU Button: Enters the main menu, allowing access and modification of various settings.
    • ENTER Button: Confirms the current selection or enters setup mode.
    • ESC Button: Exits the current setup or returns to the previous menu level.
  3. Parameter Settings
    • Navigate to the parameter settings menu, use the arrow keys to select the parameter to modify, press ENTER to enter edit mode, adjust the parameter value with the up/down arrow keys, and confirm with ENTER.
digital keypad KPC-CC01 Functional Description

II. Wiring for Terminal Start and Potentiometer Speed Control

  1. Starting Terminal Wiring
    • Forward Start (FWD): Connect the external control signal to the VFD’s forward start terminal (e.g., FWD).
    • Reverse Start (REV): For reverse rotation, connect the signal to the reverse start terminal (e.g., REV). Typically, forward and reverse cannot be activated simultaneously.
    • Stop: Connect the stop signal to the VFD’s stop terminal to interrupt output.
  2. Potentiometer Speed Control Wiring
    • Connect a potentiometer to the analog input terminal (e.g., AVI or ACI) of the VFD. Attach the two fixed ends of the potentiometer to the VFD’s power supply (e.g., +10V and GND), and connect the sliding end to the VFD’s analog input terminal.
    • According to the parameter settings in the manual (e.g., parameter 03-00), configure the relevant parameter to “frequency command” so that the VFD can adjust its output frequency based on the voltage signal from the potentiometer.
MS300 vfd standard wiring diagram

III. Parameter Configuration

  1. Basic Parameter Settings
    • Maximum Operating Frequency (Parameter 01-00): Set the maximum output frequency based on the motor specifications.
    • Acceleration/Deceleration Time (Parameters 01-12 through 01-19): Configure appropriate acceleration and deceleration times to avoid mechanical shocks and overcurrents, tailored to your application’s needs.
    • Starting Frequency (Parameter 01-09): Set the initial frequency at startup to mitigate starting surges.
  2. Input/Output Terminal Configuration
    • Multi-function Input Terminals (Parameters 02-01 through 02-07): Assign each terminal’s function according to your control requirements, such as start, stop, and direction control.
    • Analog Input Configuration (e.g., Parameter 03-00): Specify the function of AVI, ACI, and other analog input terminals, such as frequency reference or torque control.
  3. Protection Parameters
    • Overcurrent Protection (Parameters 06-03 through 06-04): Configure the overcurrent protection threshold and duration to safeguard the motor and VFD.
    • Overvoltage/Undervoltage Protection (Parameters 06-00, 06-01): Set voltage protection thresholds to ensure stable operation amidst voltage fluctuations.

IV. Fault Code Analysis and Resolution

  1. Overcurrent (OC)
    • Cause: Excessive motor load, too short acceleration time, motor malfunction, etc.
    • Resolution: Inspect the motor and load conditions, adjust the acceleration time, and check for motor damage.
  2. Overvoltage (OV)
    • Cause: Excessive input voltage, too short deceleration time, insufficient braking resistance, etc.
    • Resolution: Verify the input voltage, adjust the deceleration time, and consider adding braking resistance.
  3. Undervoltage (LV)
    • Cause: Low input voltage, voltage drop due to long power lines, etc.
    • Resolution: Check the power supply voltage and optimize power line layout.
  4. Overheating (OH)
    • Cause: High ambient temperature, poor heat dissipation, excessive load, etc.
    • Resolution: Improve cooling conditions, reduce the load, and inspect and clean the cooling fan.
  5. Communication Fault
    • Cause: Communication line issues, incorrect parameter settings, address conflicts, etc.
    • Resolution: Examine the communication lines, verify communication parameter settings, and ensure unique device addresses.

By following this guide, you can effectively use and maintain the Delta VFD MS300 series, ensuring stable operation and optimal performance.

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ACS510 Variable Frequency Drive (VFD) User Guide: Operating Panel Usage, Terminal Mode Startup and Speed Adjustment Methods, Fault Analysis and Solution Methods

ACS510 Variable Frequency Drive (VFD) User Guide

I. Operating Panel Usage

  1. Power On/Off
    Before powering on, ensure all connections are correct and the surrounding environment meets safety standards.
    Use the power switch on the operating panel to turn the power on or off.
  2. Mode Switching
    LOC/REM Button: Used to switch the control mode of the VFD. Press and hold this button for 2 seconds to toggle between Local Control (LOC) and Remote Control (REM) modes.
    In Remote Control mode, the VFD can be controlled via external terminals or communication interfaces.
  3. Display and Operation
    Display: The LCD screen on the operating panel displays various status information of the VFD, such as motor speed, current, voltage, etc.
    Button Operation: Use the Up/Down arrow buttons to navigate through menus and parameters. The MENU/ENTER button is used to enter and exit menus, while the EXIT/RESET button exits to the previous menu level or resets settings.
  4. Parameter Modification
    Enter the parameter mode, select the parameter group to be modified, adjust the parameter value using the Up/Down arrow buttons, and save the settings with the SAVE button.
ACS510 drive operation panel basic function diagram

II. VFD Terminal Start-up and Potentiometer Speed Control Wiring Methods

  1. Terminal Start-up Wiring
    External Start Signal: Typically, connect the external start signal (e.g., a push-button switch) to the DI1 (Digital Input 1) terminal of the VFD and connect the common terminal to DI COM (Digital Input Common).
    Direction Control: If direction control is required, connect the direction signal to the DI2 terminal.
    Run Enable: Some applications may require an additional run enable signal, which can be connected to the appropriate DI terminal.
  2. Potentiometer Speed Control Wiring
    Analog Input Wiring: When using a potentiometer for speed control, connect the output terminal of the potentiometer to the AI1 (Analog Input 1) terminal of the VFD and connect AI COM (Analog Input Common) to the common terminal.
    Parameter Setting: In parameter group 11, set Reference 1 Select (REF1 SELECT) to AI1 to ensure the VFD receives the speed reference signal from AI1.
standard macro of ACS510 drive function diagram

III. Parameter Settings

  1. Selecting Standard Macros
    Enter parameter group 99, find parameter 9902 (APPLIC MACRO), set it to 1, and select the ABB standard macro. This will automatically set a predefined set of parameters suitable for most general applications.
  2. Motor Parameter Settings
    Input the motor’s rated voltage (9905 MOTOR NOM VOLT), rated current (9906 MOTOR NOM CURR), rated frequency (9907 MOTOR NOM FREQ), rated speed (9908 MOTOR NOM SPEED), and rated power (9909 MOTOR NOM POWER), ensuring these parameters match the data on the motor’s nameplate.
  3. Other Important Parameters
    Acceleration Time (2202 ACCELER TIME 1): Sets the time required for the motor to accelerate from rest to maximum frequency.
    Deceleration Time (2203 DECELER TIME 1): Sets the time required for the motor to decelerate from maximum frequency to rest.
    Maximum Output Frequency (2008 MAXIMUM FREQ): Sets the maximum frequency output of the VFD.

IV. VFD Fault Code Analysis and Resolution Methods

  1. Overcurrent Fault (Code 1: OVERCURRENT)
    Cause: Motor overload, excessively short acceleration time, motor fault, etc.
    Solution: Check if the motor is overloaded, increase the acceleration time, inspect motor and cable connections.
  2. DC Overvoltage (Code 2: DC OVERVOLT)
    Cause: Excessively high input voltage, excessively short deceleration time, improper braking resistor, etc.
    Solution: Check the input voltage, increase the deceleration time, inspect the braking resistor configuration.
  3. Overtemperature Fault (Code 3: DEV OVERTEMP)
    Cause: Excessively high ambient temperature, faulty cooling fan, dust accumulation, etc.
    Solution: Lower the ambient temperature, clean dust, replace faulty fan.
  4. Motor Stall (Code 12: MOTOR STALL)
    Cause: Motor or load stall, improper motor selection, etc.
    Solution: Inspect the motor and load, ensure correct motor selection.
  5. Panel Loss (Code 10: PANEL LOSS)
    Cause: Communication fault between the control panel and the VFD.
    Solution: Check control panel connections, communication settings, and cables.

Please follow this guide for operation and adjust parameters and wiring according to actual conditions. If any issues arise, please contact us technical support promptly.

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JACT AT500 Inverter Operation Guide and Fault Handling Summary

AT500 Inverter Operation Guide and Fault Handling Summary

I. AT500 Inverter Operation Panel Usage

  1. Operation Panel Layout and Indicator Description:
    • Introduces the display, buttons (RUN, STOP/RES, MK, Λ, V, >>, etc.) on the operation panel and their functions.
    • Explains the meanings of various indicators (Run, Alm, Hz, A, V, %, rpm, F/R, etc.).
  2. Menu and Parameter Settings:
    • Describes the three-level menu mode (function parameter group, function code, function code modification) and its operation method.
    • Elaborates on how to view and modify various inverter parameters through the operation panel.
  3. Operation Mode Control:
    • Introduces starting the inverter via the RUN button and stopping it via the STOP/RES button.
    • Explains the jog operation function and its debugging applications.
Function diagram of AT500 inverter operation panel buttons

II. Terminal Control and External Potentiometer Debugging Mode Setup

  1. Terminal Control Setup:
    • Guides users to enter the F0 parameter group and set F0.02 to 1 to enable terminal control.
    • Demonstrates how to assign functions to each input terminal through the F2 parameter group and explains wiring requirements.
  2. External Potentiometer Debugging Mode:
    • Teaches users to set F0.03 or F0.04 to AI3 (keyboard potentiometer) to adjust the output frequency by rotating the potentiometer knob.
JACT AT500 inverter wiring diagram

III. Inverter Fault Code Classification and Troubleshooting Methods

  1. Overcurrent Faults (Err02-Err04):
    • Lists possible causes (output circuit short circuit, too short acceleration/deceleration time, etc.).
    • Provides solutions (check output circuit, adjust acceleration/deceleration time, etc.).
  2. Overvoltage Faults (Err05-Err07):
    • Analyzes fault causes (excessively high input voltage, external force during deceleration, etc.).
    • Offers remedies (adjust input voltage, eliminate external force during deceleration, etc.).
  3. Undervoltage Fault (Err09):
    • Describes fault causes (instantaneous power failure, low input voltage, etc.).
    • Suggests solutions (check input power supply, adjust voltage range, etc.).
  4. Overload Faults (Err10-Err11):
    • Indicates faults may be caused by excessive load, motor stall, etc.
    • Proposes reducing the load, checking the motor and mechanical conditions, etc.
  5. Input/Output Phase Loss Faults (Err12-Err13):
    • Analyzes fault causes (input power phase loss, faulty output wires or motor, etc.).
    • Offers advice on checking power and motor, troubleshooting peripheral faults, etc.
  6. Module Overheating Fault (Err14):
    • Explains fault causes (high ambient temperature, blocked air ducts, etc.).
    • Emphasizes the importance of reducing ambient temperature, cleaning air ducts, replacing fans, etc.
  7. Communication Fault (Err16):
    • Mentions possible causes (incorrect communication parameter settings, faulty communication cables, etc.).
    • Suggests checking communication parameters, cables, and the host computer.
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POWTRAN PI500 Series Current Vector Inverter: User Guide & Essential Features

This comprehensive guide covers the key features and essential operations of the POWTRAN PI500 Series high-performance current vector inverter, including parameter adjustment via the panel, start/stop control through terminals, external potentiometer debugging mode configuration, and multi-speed settings.

VFD panel operation method of POWTRAN

1. Adjusting Parameters via the Inverter Panel

To adjust parameters using the inverter’s keypad, follow these steps:

  • Enter Menu: Press the PRG key to enter the parameter setting mode.
  • Select Parameter Group: Use the arrow keys to select the desired function parameter group (e.g., F0 group for basic function parameters).
  • Select Function Code: Within the selected group, use the arrow keys to choose the function code you wish to modify.
  • Adjust Parameter Value: Use the increment/decrement keys to adjust the parameter value or enter a new value directly with the numeric keys.
  • Save Settings: After making changes, press ENTER to confirm and save your settings.

Note: Some parameters cannot be modified during operation and require the inverter to be stopped first. Always consult the manual thoroughly before adjusting parameters.

Wiring Diagram of POWTRAN PI500

2. Starting and Stopping the Inverter via Terminals

To control the inverter’s start and stop via external terminals, follow these configuration steps:

  • Set Command Source: Set F0.11 (Command Source Selection) to “1” (Terminal Control) to enable external terminal operation.
  • Assign Terminal Functions: Use F1 group function codes (e.g., F1.00, F1.01) to assign specific input terminals (e.g., DI1, DI2) for forward, reverse, stop, and other functions.
  • Wiring: Connect the external control signal wires correctly to the designated input terminals based on your settings.

To start the inverter, apply a closure signal to the forward terminal (e.g., DI1). To stop, apply a stop signal to the stop terminal (which may be DI2, depending on your configuration) or disconnect the forward signal.

External potentiometer analog quantity given wiring diagram of PI500

3. Setting External Potentiometer Adjustment Mode

To configure the inverter for external potentiometer adjustment, follow these steps:

  • Configure AI1 Input:
    • Wiring: Connect the external potentiometer’s output to the inverter’s AI1 and GND terminals.
    • Set Input Range: Adjust F1.12 (AIC1 Minimum Input) and F1.14 (AIC1 Maximum Input) based on the potentiometer’s output range to ensure the inverter interprets the signals correctly.
  • Select Frequency Source: Set F0.03 (Main Frequency Source Setting) to “2” (Analog AI1 Setting) to use the AI1 input signal as the frequency reference.
  • Start Adjustment: Once configured, rotating the external potentiometer will adjust the inverter’s output frequency.
Multi speed functional wiring diagram of PI500

4. Introduction to Multi-speed Functionality

The multi-speed feature enables preset speed profiles, allowing quick switching between them via external signals.

  • Preset Speeds: Use E1 group function codes (E1.00 to E1.15) to set up to 16 different speed segments, each representing a percentage of the maximum frequency.
  • Assign Terminal Functions: Allocate input terminals (e.g., S1, S2, S3, S4) through F1 group function codes to select between the multi-speed segments based on their combinational states.
  • Set Acceleration/Deceleration Times: Customize acceleration and deceleration times for seamless speed transitions using parameters like F0.13 to F0.15.
  • Choose Speed Switching Method: Optionally, utilize external signals (high-speed pulses, communication signals) for dynamic speed segment switching.

To utilize the multi-speed feature, manipulate the allocated external terminals or transmit corresponding control signals. The inverter will then adjust its operating frequency according to the activated speed segment.

Notes:

  • Ensure speed segment settings align with the motor and inverter’s capabilities.
  • Carefully consider the mechanical load’s response to acceleration and deceleration when setting these times.

By following these configurations, you can flexibly manage the inverter’s speed to meet various process demands, while also benefiting from the manual’s detailed guidance for troubleshooting and maintaining optimal performance.

To learn more about the usage of PI500 VFD, you can download its manual from Google Drive or contact our service：https://drive.google.com/file/d/1zCUn1w6h9rEkvbP0yPJ1qAA5–T7axBt/view?usp=sharing

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Comprehensive Guide to Resetting a Toshiba VFD (VF-A7)to Factory Default Settings

To ensure that a Toshiba Variable Frequency Drive (VFD) is restored to its factory default settings, follow this detailed, comprehensive guide that incorporates all provided images and specific requirements:

I. Understanding the KYP Parameter and Factory Reset

The KYP parameter is a special feature in Toshiba VFDs that allows users to reset the drive to its factory default settings. When the KYP is set to a specific value (usually “3”, but please refer to the VFD’s user manual for confirmation), all other parameters will be reset to their default states.

II. Recording Important Parameters (Optional Step)

Before performing the factory reset operation, it is recommended to record all important or customized parameter settings. This step is optional but highly advised so that these parameters can be restored if needed or referenced against the new settings.

Basic Method for Toshiba VFD to Return to Factory Settings

III. Performing the Factory Reset Operation

  1. Initial Display:
    • The VFD’s LED display will show the current operating frequency (during stoppage).
  2. Entering Parameter Setting Mode:
    • Press the MON key, and the screen will display the first basic parameter, such as “Auto Acceleration/Deceleration (RU1)” or another parameter.
  3. Selecting the KYP Parameter:
    • Use the △ or ▽ keys to scroll through the parameter list until you find the KYP parameter.
  4. Viewing and Modifying the KYP Value:
    • Press the ENTER key to enter the KYP parameter setting interface.
    • The screen will now display the current setting of the KYP parameter (usually “0” or another non-specific value).
    • Use the △ or ▽ keys to change the KYP value to the specific value for executing the factory reset (usually “3”, but please confirm by referring to the user manual).
    • Press the ENTER key to confirm the modification.
  5. Confirmation and Initialization:
    • The screen will display “In it” or similar messaging, indicating that initialization is in progress.
    • All parameters will be reset to their factory default settings.
    • The initialization process may take some time, so please wait patiently.
  6. Restoring the Original Display:
    • Once initialization is complete, the LED display will return to its original state, such as showing the operating frequency.
KYP parameter description for Toshiba VFD

IV. Verifying the Factory Reset

After performing the factory reset operation, it is recommended to recheck all parameters to ensure they have been correctly reset to their factory default values. You can refer to the VFD’s user manual or contact technical support for detailed information on factory default values.

V. Important Considerations During Operation

  • Before performing the factory reset operation, ensure that the VFD is stopped and disconnected from the power source.
  • During the operation, please ensure that no other parameters are inadvertently modified, as this may affect the device’s performance.
  • If you encounter any doubts or uncertainties during the operation, press the MON key multiple times and restart from the basic parameter display.
  • If you are unsure how to perform the factory reset operation or encounter any issues, please contact Toshiba VFD technical support for assistance.
The KYP parameter of Toshiba VFD is set to 3

By following these steps, you can successfully reset your Toshiba VFD(VF-A7) to its factory default settings, restoring its original configuration. This will help ensure the VFD’s performance and stability, providing a solid foundation for its subsequent use.

The above is the method for resetting the VF-A7 series parameters of Toshiba VFD to factory values. It is derived from the summary and induction of the Toshiba VFD manual. If you need a complete Toshiba VFD manual, you can contact us directly or download it from Google drive:https://drive.google.com/file/d/1u2o8VJ3vwT1avatI4qsSRUVXlOebqgvY/view?usp=sharing

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KAIZ Series AC Servo Drive User Manual: Comprehensive Guide for Selection, Installation, Operation, and Troubleshooting

I. JOG Jogging Operation Process

The JOG mode allows users to directly control the start, stop, and reverse of the servo motor through buttons, commonly used for manual debugging and positioning. Below are the specific steps for JOG jogging operation:

  1. Connect Control Signals:
    • Ensure that the control signal cable CN1 of the servo driver is correctly connected to the corresponding controller or manual operation panel.
    • Set the Servo Enable (SON) to OFF, CCW Drive Inhibit (FSTP) and CW Drive Inhibit (RSTP) both to ON, or disable the drive inhibit function using parameter PA20.
  2. Power On the Control Circuit:
    • Turn on the control circuit power supply of the servo driver (note that the main circuit power supply should remain off for now).
    • The display of the servo driver will light up. Check for any alarm messages, and if any, inspect the connection wiring.
  3. Set Control Mode:
    • Enter the parameter setting interface and set the Control Mode Selection (Parameter No. 4) to JOG mode (value 3).
  4. Power On the Main Circuit:
    • After confirming no alarms or abnormalities, turn on the main circuit power supply.
    • Set the Servo Enable (SON) to ON, and the motor will enter an excited state but remain at zero speed.
  5. Perform JOG Operation:
    • In JOG mode, press and hold the Up key (↑) to make the motor run forward at the preset JOG speed (set in Parameter No. 22); release the key, and the motor will stop and remain at zero speed.
    • Press and hold the Down key (↓) to make the motor run reverse at the preset JOG speed; release the key, and the motor will stop and remain at zero speed.
Standard wiring method for servo position control mode

II. Position Mode Operation Process

The position mode allows users to control the precise position of the servo motor by sending position commands. Here are the specific steps for position mode operation:

  1. Set Basic Parameters:
    • Ensure the Servo Enable (SON) is set to OFF, and CCW Drive Inhibit (FSTP) and CW Drive Inhibit (RSTP) are both set to ON.
    • Enter the parameter setting interface and set the Control Mode Selection (Parameter No. 4) to Position Mode (value 0).
    • According to the output signal method of the controller, set Parameter No. 14 (Position Command Pulse Input Mode) and the appropriate electronic gear ratio (No. 12 and No. 13).
  2. Connect Position Command Signals:
    • Connect the position controller’s output signals to the corresponding position command input terminals of the servo driver (e.g., CN1-22/5/14/23 pins).
  3. Power On and Start:
    • Turn on both the control circuit and main circuit power supplies. After confirming no alarms or abnormalities, set the Servo Enable (SON) to ON, and the motor will enter an excited state.
    • Operate the position controller to send position commands to the servo driver, driving the motor to move precisely to the designated position.
Standard wiring method for servo speed control mode

III. Speed Mode Operation Process

The speed mode allows users to control the rotation speed of the servo motor by sending speed commands. Here are the specific steps for speed mode operation:

  1. Set Basic Parameters:
    • Ensure the Servo Enable (SON), Speed Selection 1 (SC1), and Speed Selection 2 (SC2) are all set to OFF, and CCW Drive Inhibit (FSTP) and CW Drive Inhibit (RSTP) are also OFF, or use parameters for direct control.
    • Enter the parameter setting interface and set the Control Mode Selection (Parameter No. 4) to Speed Mode (value 1).
    • Set the internal speed parameters No. 24 to No. 27 as needed.
  2. Connect Speed Command Signals:
    • Connect the output signals of the speed controller to the speed command input terminals of the servo driver (e.g., through control terminal CN2 or internal speed selection).
  3. Power On and Start:
    • Turn on both the control circuit and main circuit power supplies. After confirming no alarms or abnormalities, set the Servo Enable (SON) to ON, and the motor will enter an excited state.
    • Operate the speed controller to send speed commands to the servo driver, driving the motor to rotate at the commanded speed.

IV. Fault Codes and Solutions

  1. Err-01: IPM Module Fault
    • Cause: Circuit board failure, low supply voltage, damaged motor insulation, etc.
    • Solution: Check the driver connections, confirm normal supply voltage, and replace the faulty driver or motor.
  2. Err-03: OCU Overcurrent
    • Cause: Short circuit in U, V, W phases of the driver, poor grounding.
    • Solution: Check the driver connections, ensure proper grounding, and replace the faulty driver.
  3. Err-07: Encoder Fault
    • Cause: Incorrect encoder wiring, encoder damage, or faulty cable.
    • Solution: Check encoder wiring, replace the encoder or cable.
  4. Err-08: Speed Deviation
    • Cause: Excessively high input command pulse frequency, improper acceleration/deceleration time constants.
    • Solution: Correctly set the input pulse frequency and acceleration/deceleration time constants, check encoder status.
  5. Err-09: Position Deviation
    • Cause: Incorrect position command, encoder damage.
    • Solution: Check position commands and encoder status, reset position parameters.

By following these steps and solutions, users can effectively operate the KaiZheng Servo C&B series servo driver in JOG mode, position mode, and speed mode, and promptly address potential fault codes for better Google indexing.

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Principles, usage methods, precautions, maintenance methods, and key points for high-voltage inverters (taking the Senlan SBH series as an example)

I. High-Voltage Inverter Principles

The Senlan SBH series of high-voltage inverters utilize advanced multi-level unit series technology, which combines multiple low-voltage power units in series to achieve direct high-voltage input to high-voltage output conversion. Its core principles encompass several crucial components:

Circuit schematic diagram of unit series high-voltage inverter
  1. Phase-Shift Transformer: Employing a multi-secondary phase-shift design, this transformer converts grid high voltage into multiple low-voltage outputs for the power units. The phase-shift technology effectively reduces harmonic currents on the grid side, enhancing power quality.
  2. Power Units: Each power unit functions as an independent PWM inverter, capable of outputting voltage waveforms of specific amplitude and frequency. When multiple power units are connected in series, they form a high-voltage output, enabling precise control over high-voltage motors.
  3. Fiber-Optic Communication: High-speed and reliable communication between power units and the control cabinet is facilitated through fiber-optic cables, transmitting control signals and status information to ensure rapid system response and stability.
  4. Main Control System: Located within the control cabinet, this system oversees the logical control and computational processing of the entire inverter system. By receiving external commands and internal feedback signals, it precisely regulates the power units.
Electrical schematic diagram of power unit

II. Usage Method

  1. Installation and Wiring:
    • Install the inverter in a dry, well-ventilated, dust-free environment, keeping it away from flammable and explosive materials.
    • Follow the manual’s guidelines for wiring the main and control circuits, ensuring accurate and secure connections, with special attention paid to high-voltage isolation.
  2. Parameter Setting:
    • Utilize the human-machine interface (HMI) to configure the inverter’s various parameters, including motor settings, control modes, and protection configurations.
    • Adjust acceleration/deceleration times, V/F curves, and other parameters according to specific operating conditions to meet requirements.
  3. Startup and Commissioning:
    • Under safe conditions, follow the manual’s steps to initiate a no-load test of the inverter.
    • Observe the inverter’s operational status and motor response, gradually fine-tuning parameters to achieve optimal performance.

III. Precautions

Basic operation wiring connection
  1. Safety Considerations:
    • Throughout installation, commissioning, and maintenance, ensure power is disconnected and warning signs are displayed to prevent electrocution.
    • Strictly prohibit opening cabinet doors or touching live high-voltage components while the inverter is operational.
    • Operators must undergo professional training, familiarizing themselves with operational procedures and safety precautions.
  2. Environmental Requirements:
    • Verify the inverter’s installation environment complies with manual specifications, preventing damage from excessive temperature, humidity, or corrosive gases.
    • Regularly inspect and clean the inverter’s surroundings, ensuring proper ventilation.
  3. Periodic Inspections:
    • Routinely check the inverter’s terminal blocks, capacitors, resistors, and other components for damage, promptly replacing worn parts.
    • Keep an eye out for abnormal vibrations, noises, or odors emanating from the inverter, addressing any issues promptly.

IV. Maintenance Precautions

  1. Routine Maintenance:
    • Regularly verify the inverter’s operating environment, monitoring factors such as temperature and humidity.
    • Promptly attend to any unusual vibrations, sounds, or odors, investigating and resolving any issues encountered.
    • Schedule regular cleaning of fan filters and heat sinks to maintain optimal cooling performance.
  2. Scheduled Servicing:
    • Conduct a comprehensive inspection and maintenance service every 3 to 6 months.
    • Securely tighten terminal blocks, swap out aging capacitors and resistors, and clean circuit boards and air ducts to prevent dust accumulation.
  3. Professional Repairs:
    • For complex faults or specialized maintenance needs, promptly contact Senlan’s after-sales service team or qualified technicians. Avoid attempting unauthorized disassembly or repairs, which could exacerbate issues or pose safety hazards.
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Reasons for Slow Speed of Centrifuge Inverter and Solutions

Centrifuge frequency converter control cabinet

Centrifuges, as commonly used separation equipment in laboratories and industrial fields, rely heavily on stable and efficient rotational speed for optimal separation results and productivity. However, in practical applications, users may encounter issues where the centrifuge inverter operates at a sluggish pace, which not only affects separation effectiveness but also increases the risk of equipment failures. This article will analyze the reasons behind the slow speed of centrifuge inverters from multiple perspectives and provide corresponding solutions.

I. Reasons for Slow Speed of Centrifuge Inverter

  1. Excessive Material Load
    When the amount of material being processed by the centrifuge exceeds its design capacity, the rotational speed naturally suffers, leading to sluggish acceleration. In such cases, reducing the material load is necessary to avoid overloading the centrifuge.
  2. Accumulation of Impurities Inside the Centrifuge
    The interior of a centrifuge is prone to accumulating dust and other impurities, which can increase the rotational resistance of the rotor, thereby affecting the speed. Regular cleaning of the centrifuge to maintain equipment cleanliness is crucial to addressing this issue.
  3. Damage to Rotor Bearings
    Damage to rotor bearings can not only cause a decrease in rotational speed but also lead to abnormal noises. Inspecting and replacing damaged rotor bearings can restore the centrifuge to its normal operating speed.
  4. Loose or Worn Drive Belts
    Loose or worn drive belts are common causes of slow centrifuge speed. Regular inspection of belt tension and wear, along with timely replacement of damaged components, can ensure the proper functioning of the centrifuge.
  5. Motor Failures
    Motor failures, such as winding circuit breaks, rotor fractures, or inverter malfunctions, directly impact the rotational speed of the centrifuge. In such situations, motor replacement or electrical circuit repairs are necessary.
  6. Improper Inverter Parameter Settings
    As the key device controlling the centrifuge’s rotational speed, improper settings of the inverter parameters can also lead to sluggish speed. Checking and adjusting the inverter parameters to match the actual requirements of the centrifuge is essential.
  7. Electrical Control System Malfunctions
    Issues with components in the electrical control system, such as adjustable resistors, thyristors, and rectifier diodes, can also cause unstable motor speed. Regular inspection of these components and timely replacement of damaged parts are important measures for maintaining the stability of the centrifuge’s electrical control system.
Centrifuge and control system

II. Solutions

  1. Adjust Material Load
    Reasonably adjust the material load based on the centrifuge’s processing capacity to avoid overload operation.
  2. Regularly Clean the Centrifuge
    Establish a regular cleaning schedule to ensure the centrifuge is free from impurity accumulation and remains clean.
  3. Inspect and Replace Damaged Components
    Regularly inspect the condition of key components such as rotor bearings and drive belts, and promptly replace any damaged parts.
  4. Adjust Inverter Parameters
    Adjust the inverter parameters according to the actual needs of the centrifuge to ensure stable rotational speed and compliance with process requirements.
  5. Enhance Electrical Control System Maintenance
    Regularly inspect the condition of components in the electrical control system, such as adjustable resistors, thyristors, and rectifier diodes, and promptly repair or replace any damaged parts.
  6. Professional Repair and Technical Support
    For complex fault issues, seek the assistance of professional repair personnel and technical support to ensure the centrifuge receives proper maintenance and repair.

III. Conclusion

The slow speed of a centrifuge inverter can be attributed to various factors, including excessive material load, accumulation of impurities inside the centrifuge, damage to rotor bearings, loose or worn drive belts, motor failures, improper inverter parameter settings, and electrical control system malfunctions. By implementing measures such as adjusting material load, regularly cleaning the equipment, promptly replacing damaged components, adjusting inverter parameters, and enhancing electrical control system maintenance, the issue of slow centrifuge inverter speed can be effectively resolved, thereby improving the operational efficiency and stability of the equipment. Additionally, for complex fault issues, seeking professional repair and technical support is essential.

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External Terminal Start & Potentiometer Speed Control with Password Security and Fault Code Analysis on CDI-EM60 and EM61 Series Inverters from Hangzhou Delixi

The CDI-EM60 and EM61 series variable frequency drives (VFDs) from Hangzhou Delixi boast robust functionalities in industrial control applications. This article delves into the external terminal start and external potentiometer speed control features of these inverters, alongside an overview of their password security and fault code analysis capabilities.

I. External Terminal Start

Pictures of Hangzhou Delixi CDI-EM60 and EM61 series drivers

The CDI-EM60 and EM61 series VFDs support versatile starting methods, including keypad control, terminal control, and communication control. External terminal start is a popular and flexible method, triggering the inverter’s start and stop through external signals.

Setup Steps for External Terminal Start:

  1. Parameter Configuration:
    • Set the P0.0.03 (Operation Control Mode Selection) to 1 for terminal control.
    • Adjust other relevant parameters such as acceleration/deceleration times and frequency sources as needed.
  2. Wiring:
    • Connect external control signals to the corresponding input terminals of the inverter (e.g., DI1, DI2).
    • Ensure compatibility between the external signal source (e.g., pushbuttons, relay contacts) and the inverter input terminals.
  3. Testing:
    • Power on and test if the external control signals correctly trigger the inverter’s start and stop.
    • Fine-tune parameters for a smooth start-up process.

Precautions:

  • Ensure external control signals adhere to the inverter’s electrical specifications.
  • Regularly inspect wiring for secure connections to prevent control failures.
Delixi VFD CDI-EM60 and EM61 External Terminal Control Wiring Diagram

II. External Potentiometer Speed Control

External potentiometer speed control adjusts the inverter’s output frequency by rotating an external potentiometer, thereby regulating motor speed.

Setup Steps for External Potentiometer Speed Control:

  1. Parameter Configuration:
    • Set the P0.0.04 (Frequency Source Selection) to 2 (Keypad Potentiometer) or 1 (External Terminal VF1, if connecting the potentiometer to VF1).
    • Adjust parameters like maximum frequency and acceleration time to suit speed control requirements.
  2. Wiring:
    • Connect the wiper, fixed terminal, and variable terminal of the potentiometer to the corresponding inverter terminals (e.g., VF1, GND).
    • Ensure the potentiometer’s electrical specifications match the inverter’s input requirements.
  3. Testing:
    • Rotate the potentiometer and observe if the inverter’s output frequency varies accordingly.
    • Adjust the potentiometer’s rotation range and inverter parameters for optimal speed control.

Precautions:

  • Regularly check potentiometer connections for reliability to prevent speed instability.
  • Avoid sudden disconnection or short-circuiting of potentiometer wiring during inverter operation.

III. Password Settings and Decoding

The Delixi inverters offer password protection to restrict unauthorized parameter modifications.

Password Setup:

  1. Access the Password Menu:
    • Navigate through the inverter’s keypad to the parameter setting interface.
    • Locate the password-related function code (e.g., P5.0.20) and enter the password setup menu.
  2. Enter the Password:
    • Input a custom 5-digit password.
    • Confirm the password and save changes before exiting the setup menu.

Password Decoding and Recovery:

  • Decoding: Enter the correct password to lift password protection and regain full inverter control.
  • Password Recovery: If forgotten, contact the inverter supplier or manufacturer for unlocking or password reset.

IV. Fault Code Analysis

During operation, the Delixi inverters may display fault codes indicating the device’s status and fault types.

  • Err01: Overcurrent During Constant Speed. Possible causes include output circuit shorts or load surges. Inspect and resolve issues before restarting the inverter.
  • Err02: Overcurrent During Acceleration. Might stem from motor/circuit shorts or inadequate acceleration time. Adjust parameters or check wiring.
  • Err04: Overvoltage During Constant Speed. Verify input voltage and bus voltage readings.
  • Err07: Module Fault. Could indicate inverter module damage, requiring replacement or professional service.
  • Err10: Motor Overload. Check for motor blockage or excessive loads, adjust motor protection parameters, or reduce the load.

Consulting the inverter manual’s fault code table enables swift troubleshooting and ensures uninterrupted production.

In conclusion, the CDI-EM60 and EM61 series VFDs from Hangzhou Delixi excel in industrial control with their versatile starting mechanisms, precise speed regulation, robust security features, and intuitive fault diagnosis. Mastering these functionalities optimizes device performance and enhances operational safety.

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Understanding and Resolving FAULT 7086 Alarm in ACS380 and ACS Series (ACS180, ACS530, ACS580, ACS880) Inverters

Introduction

When using ABB’s ACS series inverters, including ACS180, ACS530, ACS580, and ACS880, users may encounter the FAULT 7086 alarm code, which is not explicitly mentioned in the manuals for these models. This article delves into the reasons behind this alarm and provides comprehensive solutions to help users quickly identify and resolve the issue.

Fault 7086 of ABB drive

Background of FAULT 7086 Alarm

Although the operation manuals for ACS180, ACS530, ACS580, and ACS880 do not directly mention FAULT 7086, the explanation for this alarm code is found in the ACS380 (specifically designed for crane applications) manual. FAULT 7086 indicates “AI Overvoltage in I/O Module,” meaning that an overvoltage has been detected at the analog input (AI) port.

Cause Analysis

AI Port Overvoltage: When the input voltage at the AI port exceeds the set upper limit (typically 10VDC or a configurable value such as 7.5VDC), the inverter triggers the FAULT 7086 alarm to protect internal circuits from damage.

AI Signal Mode Change: If the AI signal level exceeds the acceptable range, the inverter may attempt to automatically switch the AI to voltage mode. If this fails, it will trigger the alarm.

Circuit Board Component Issues: Although the circuit board designs of ACS180, ACS530, ACS580, and ACS880 differ, they share a core control system. Issues with the mainboard, drive board connections, or related components can also lead to unexpected FAULT 7086 alarms.

The posistion of I/O module

Solutions

1.Check AI Voltage:

（1）Use a multimeter to measure the actual input voltage at the AI port and confirm if it exceeds the set upper limit.

（2）Adjust the AI port’s voltage upper limit setting, if necessary, to suit the current operating 2.environment.

（1）Inspect External Connections:

Verify that the external signal source for the AI port is normal, with no abnormal fluctuations or damage.

（2）Check the connection cables and plugs for the AI port to ensure they are securely connected and free from looseness.

3.Examine Circuit Boards and Modules:

（1）If suspecting a circuit board or module failure, first inspect the cables and plugs between the mainboard and drive board, cleaning dust and ensuring good contact.

（2）If possible, try replacing suspected circuit boards or modules to verify if the issue is resolved.

4.Refer to Relevant Documentation:

（1）Although the ACS180, ACS530, ACS580, and ACS880 manuals do not directly mention FAULT 7086, refer to the ACS380 manual for more information on handling AI overvoltage.

（2）Contact our technical team for free technical consultation and assistance

5.Reset the Inverter:

After ruling out external hardware issues, attempt to reset the inverter to see if the alarm clears.

I/O extension module of acs380

Conclusion

The FAULT 7086 alarm in ACS series inverters, including ACS180, ACS530, ACS580, and ACS880, can occur under specific circumstances not directly mentioned in their manuals. By thoroughly analyzing the alarm’s background and causes, and implementing appropriate solutions, users can effectively identify and resolve the issue. During the process, ensure safe operation and back up important data to prevent unexpected losses.