October 2024 – longi

Posted on 2024年10月7日2024年10月7日 by baiyuzhan — Leave a comment

User Guide for Danfoss VLT2800 Frequency Converter

Danfoss VLT2800 Frequency Converter User Guide

1. Introduction to the Operation Panel

The operation panel of the Danfoss VLT2800 frequency converter is designed to be simple and user-friendly, allowing users to control basic functions and adjust parameters. The key components of the panel are:

Display Screen: Shows current status, parameter values, fault codes, etc.
Navigation Keys: Used to navigate between menus and parameters, including arrow keys for up, down, left, and right.
Operation Keys: Includes keys for start, stop, reset, and other control functions for easy operation.
Quick Menu Key: Provides quick access to commonly used menus and parameters.
Change Data Keys: These keys allow users to modify displayed parameters and adjust the operating status of the converter.

With these buttons, users can perform parameter settings, switch operating modes, and monitor the running status of the frequency converter in real-time.

2. Parameter Initialization and Adjustment

When using the VLT2800 frequency converter for the first time or when restoring factory settings, follow these steps for parameter initialization and adjustment:

Restoring Factory Settings:

Enter the main menu and select the “Restore Factory Settings” option. The frequency converter will reset all user settings to default parameters.

Motor Parameter Settings:
Configure the motor parameters through parameter group 102-106:

102: Motor Power (PM,N): Set the motor’s rated power.
103: Motor Voltage (UM,N): Set the motor’s rated voltage.
104: Motor Frequency (fM,N): Set the motor’s rated working frequency.
105: Motor Current (IM,N): Set the motor’s rated current.
106: Motor Speed (nM,N): Set the motor’s rated speed.

Speed Control Mode:

Choose between open-loop or closed-loop speed control to ensure precise control based on application requirements.

3. Start/Stop Function and External Potentiometer Adjustment

1. Start and Stop Functions via Terminals

The Danfoss VLT2800 frequency converter can be started and stopped using terminal connections. Follow these steps for terminal wiring:

Start Signal: Connect the start signal to terminals 12 (START) and GND. The converter will start the motor according to the set parameters once the signal is received.
Stop Signal: Connect the stop signal to terminals 13 (STOP) and GND. The motor will decelerate and stop as per the set deceleration time when the stop signal is triggered.
Reset Function: Connect an external reset signal to terminal 16 (RESET) to reset the converter when needed.

2. External Potentiometer for Speed Adjustment

To adjust the output frequency using an external potentiometer, follow these wiring steps:

Potentiometer Wiring:
Connect the positive terminal of the potentiometer to terminal 55 (+10V output), the negative terminal to terminal 53 (analog input), and ground to GND.
Parameter Settings:

In parameter group 300, set the analog input type and configure terminal 53 to be controlled by the external potentiometer.
Adjust parameters 204 (RefMIN) and 205 (RefMAX) to set the minimum and maximum reference values corresponding to the potentiometer.

By adjusting the potentiometer, the frequency converter’s output frequency can be dynamically controlled, allowing for smooth linear speed regulation from minimum to maximum.

4. Fault Code Analysis and Troubleshooting

The VLT2800 frequency converter features a self-diagnostic function. If a fault occurs during operation, the relevant fault code will be displayed on the control panel. Below are some common fault codes and their solutions:

E1: Overcurrent Protection

Cause: Fast motor acceleration, excessive load, or motor short circuit.
Solution: Check motor wiring, reduce load, or extend the acceleration time.

E2: Overvoltage Protection

Cause: Power supply voltage too high or large voltage fluctuations.
Solution: Check if the power supply voltage is within the specified range, and use a voltage stabilizer if necessary.

E3: Undervoltage Protection

Cause: Power supply voltage too low or a sudden voltage drop.
Solution: Ensure stable power supply and check voltage levels.

E4: Overheating Protection

Cause: Poor heat dissipation or high ambient temperature.
Solution: Check the cooling system of the converter, ensure the fan is working properly, and reduce the environmental temperature or improve ventilation if needed.

E14: Communication Failure

Cause: Communication line fault or loss of communication between the controller and the converter.
Solution: Inspect communication cable connections and reconfigure communication parameters.

By setting the correct parameters, ensuring proper wiring, and accurately identifying fault codes, users can ensure the stable operation of the Danfoss VLT2800 frequency converter and troubleshoot issues as they arise.

This guide provides users with a comprehensive overview of the VLT2800 frequency converter, covering panel operation, parameter setup, terminal functions, and troubleshooting to help them get started and maintain smooth operation of the device.

Posted on 2024年10月6日2024年10月6日 by baiyuzhan — Leave a comment

Operation Manual and User Guide for Shihlin VFD SS Series

I. Description of Operation Panel Functions and Process for Restoring Factory Default Settings

Description of Operation Panel Functions

The operation panel of Shihlin VFD SS series is powerful, facilitating user settings and monitoring. The operation panel mainly includes the following function keys and indicators:

RUN/STOP Key: Used to start and stop the VFD.
Frequency Adjustment Knob: Used to manually adjust the output frequency of the VFD.
Mode Switch Key: Used to switch between different operation modes, such as PU mode, JOG mode, external mode, etc.
Monitor/Set Key: Used to switch between monitor mode and set mode.
LED Indicators: Including running indicator, frequency monitor indicator, voltage monitor indicator, etc., used to indicate the current status of the VFD.

Process for Restoring Factory Default Settings

If you need to restore the VFD parameters to their factory defaults, follow these steps:

Switch to Monitor Mode: Press the Monitor/Set key to ensure the VFD is in monitor mode.
Read Parameter Pr998: Enter the parameter setting mode on the operation panel, find parameter Pr998, and read its current value.
Write Parameter Pr998: Write the read Pr998 value again. At this point, the VFD will automatically initialize the parameters, and all parameters will be restored to their factory defaults.
Restart the VFD: To ensure the parameters are successfully restored, it is recommended to restart the VFD.

Shilin VFD SS series operation panel DU01

II. Terminal Start and External Potentiometer Speed Adjustment Wiring and Parameter Debugging

Terminal Start Wiring and Parameter Debugging

If you need to start the VFD via terminal, you need to connect the external control signal to the corresponding control terminal of the VFD. Taking the STF (forward start) terminal as an example, the wiring and parameter debugging process is as follows:

Wiring: Connect the positive pole of the external control signal to the STF terminal, and the negative pole to the common terminal SD.
Parameter Settings:
Enter the parameter setting mode, set Pr79 to 2 (external mode).
Set parameters such as start frequency (Pr13) and upper limit frequency (Pr1) as needed.
Ensure that the STF terminal function is correctly set (default is forward start function).

External Potentiometer Speed Adjustment Wiring and Parameter Debugging

If you need to adjust the output frequency of the VFD through an external potentiometer, you need to connect the output signal of the potentiometer to the analog signal input terminal of the VFD. Taking a 0~10V voltage signal as an example, the wiring and parameter debugging process is as follows:

Wiring: Connect the positive output of the potentiometer to the AI1 (2-5) terminal of the VFD, and the negative output to the common terminal GND.
Parameter Settings:
Enter the parameter setting mode, set Pr73 to 1 (select 0~10V voltage signal input range).
Set Pr38 to the desired voltage-frequency conversion relationship, for example, when the potentiometer outputs 10V, the VFD outputs a frequency of 50Hz.
Set Pr79 to a suitable operation mode, such as external mode or mixed mode.
Ensure that other relevant parameters (such as acceleration and deceleration time, torque compensation, etc.) have been set according to actual needs.

III. Analysis and Solutions for Fault Alarms

The Shihlin VFD SS series may encounter various fault alarms during operation. Below are some common fault alarm codes, their analysis, and solutions:

ERR (Error):
Cause: May be caused by insufficient power supply voltage, the RESET terminal being connected, poor contact between the operator and the main unit, internal circuit failure, or CPU malfunction.
Solution: Check if the power supply voltage is normal; disconnect the reset switch; ensure good connection between the operator and the main unit; if the problem persists, the VFD may need to be replaced or restarted.
OC1 (Overcurrent During Acceleration), OC3 (Overcurrent During Deceleration):
Cause: Usually caused by excessive load, too short acceleration/deceleration time, or abnormal regenerative braking resistor.
Solution: Check if the load is excessive and reduce it appropriately; extend the acceleration/deceleration time; check if the regenerative braking resistor is connected properly and has the correct resistance.
OV2 (Overvoltage at Constant Speed):
Cause: May be caused by excessive voltage between terminals P-N.
Solution: Check if a regenerative braking resistor is connected between terminals P-PR and if the connection is normal; if regenerative function is not needed, short-circuit between P-PR.
THT (IGBT Module Overheat):
Cause: The IGBT module temperature is too high.
Solution: Check if the ambient temperature around the VFD is too high; ensure good heat dissipation of the VFD; check if the setting of the electronic thermal relay capacity is reasonable.
BE (Brake Transistor Abnormal):
Cause: External motor thermal relay actuation.
Solution: Check if the capacity of the external thermal relay matches the motor capacity; reduce the load to avoid frequent actuation of the thermal relay.

By carefully reading this user manual and following the above operation guide, users can better understand and use the Shihlin VFD SS series, ensuring normal operation and efficient working of the equipment.

Posted on 2024年10月6日2024年10月6日 by baiyuzhan — Leave a comment

Analysis and Solutions for Overheating Alarm 2010 or Fault Code F009 in ABB ACS510 Series Drives

Introduction
ABB ACS510 series drives are widely used in industrial automation to control various types of motors. Overheating alarms (2010) and fault codes (F009) are common issues that relate to motor overheating. If not addressed promptly, these issues can lead to motor or drive damage. This article will explain the mechanisms behind overheating alarms 2010 and fault code 9 in detail and offer solutions to address them.

1. Overview of the Alarm and Fault

When the ABB ACS510 series drive detects that the motor temperature exceeds safe limits, it may display an overheating alarm (2010) or a fault code (F009). The key difference between these two is:

Overheating Alarm 2010: The drive detects that the motor temperature is higher than the set threshold, issuing a warning but allowing the drive to continue running, giving the user time to intervene.
Fault Code 9: The motor temperature rises to a critical level, and the drive shuts down to prevent further damage to the motor or drive.

2. Mechanism of Overheating Alarms and Faults

In traditional motor temperature protection systems, thermal resistors (PTC or NTC) are used to directly monitor the motor’s internal temperature. When the motor exceeds a set temperature, the resistance value of the thermal resistor changes, and the drive detects this, triggering alarms or shutdowns. However, in the ABB ACS510 series, there is no direct connection to the motor’s thermal resistor. Instead, the drive uses a sophisticated thermal model algorithm to estimate the motor temperature.

1. The Relationship Between Motor Current and Temperature

The motor current is a key factor in determining the motor’s temperature during operation. Generally, the higher the current, the greater the heat generated in the motor windings due to resistive losses (I²R losses). However, the relationship between current and temperature is not linear. The temperature rise in the motor also depends on:

Thermal time constant: The rate at which the motor heats up and cools down is affected by its thermal time constant. Even if the current increases suddenly, the motor temperature doesn’t immediately rise to dangerous levels because the motor has thermal inertia. Similarly, cooling takes time once the motor is stopped.
Cooling efficiency: The effectiveness of motor cooling also influences temperature changes, especially when running at low or zero speed. At low speeds, cooling is less effective, and the temperature tends to rise faster.

2. Thermal Model Algorithm in the Drive

The ABB ACS510 drive estimates motor temperature based on the actual current, time, and set parameters, even without direct temperature sensor input.

Parameter 3005 (Motor Thermal Protection): This parameter enables or disables motor thermal protection. When enabled, the drive estimates the motor’s temperature based on current and time.
Parameter 3006 (Motor Thermal Time Constant): This defines the motor’s thermal time constant, determining how quickly the motor heats up or cools down. The longer the time constant, the slower the temperature rise, and vice versa.
Parameter 3007 (Zero Speed Cooling Factor) and 3009 (Full Speed Cooling Factor): These parameters influence how the motor cools at low and high speeds, respectively. Since motor cooling fans often rely on motor speed, cooling is less effective at low speeds, making the motor more prone to overheating.

The drive uses these parameters to determine if the motor is at risk of overheating. When the current is high for an extended period, the drive accumulates the thermal load, and once the temperature estimate reaches the threshold, it triggers either an alarm (2010) or a fault (9).

3. Solutions for Resolving the Fault

When an overheating alarm (2010) or fault code (9) occurs, the following steps can be taken to troubleshoot and resolve the issue:

1. Check the Motor Load and Operating Conditions

First, verify if the motor is overloaded. A motor running at high load or full load for an extended time will heat up quickly. If the load exceeds the motor’s rated capacity, reduce the load or stop the motor temporarily to allow it to cool down.

2. Check Drive Parameter Settings

Parameters 3005 to 3009: Ensure that these parameters are correctly configured, particularly the motor thermal time constant (3006) and cooling factors (3007, 3009). If the motor often runs at low speed, adjust the cooling factors to improve temperature estimation accuracy.
Overload Protection Settings: Make sure that overload protection is correctly enabled to prevent the motor from running under excessive load for extended periods.

3. Inspect the Drive and Motor Cooling Systems

The drive includes thermal resistors to monitor its internal temperature. If the cooling system fails, such as if the cooling fan malfunctions, the heat sink becomes clogged, or the ambient temperature is too high, this can affect both the drive and motor cooling.

Clean the heat sink and check the fan: Regularly clean the heat sink and ensure the cooling fan operates correctly for optimal heat dissipation.
Improve the working environment: Ensure that the drive and motor are in a well-ventilated area to avoid high ambient temperatures.

4. Check Cables and Connections

Inspect the cables between the motor and drive for damage or poor connections. Faulty cables can cause irregular currents, which may lead to overheating alarms.

5. Monitor and Maintain the System

For motors and drives running for long periods, regularly monitor their operation, logging key data like current and temperature. Adjust drive parameters according to the actual operating conditions to keep the system running within safe temperature limits.

4. Conclusion

Overheating alarms (2010) and fault code (F009) in the ABB ACS510 series drives are primarily triggered by the internal thermal model, which estimates the motor temperature based on current and runtime. This model eliminates the need for a direct motor thermal resistor connection while providing effective motor temperature monitoring and alarm functionality to prevent motor damage.

In practical use, adjusting drive parameters, performing regular maintenance, and controlling the motor load are key to preventing and resolving such issues. Through this analysis, electricians and technicians can better understand the mechanisms behind overheating alarms and faults, take appropriate measures to resolve them, and ensure the safe operation of both the motor and drive.

Posted on 2024年10月4日2024年10月4日 by baiyuzhan — Leave a comment

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

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

LS S100 VFD Operation Panel Function Diagram

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

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

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

VFD Initialization Setting
To initialize VFD parameters, follow these steps:

LS Power VFD LSLV-S100 Series Control Terminal Diagram

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

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

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

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

Posted on 2024年10月3日2024年10月3日 by baiyuzhan — Leave a comment

Guide for the User Manual of Haishida HSD260 Series VFD

I. Introduction to the Operation Panel Functions

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

HSD260 VFD Operation Panel Function Diagram

Display Settings

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

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

Start/Stop Operations

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

Parameter Adjustment

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

HSD260 VFD Control Circuit Wiring Diagram

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

Terminal Start

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

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

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

Potentiometer Speed Control

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

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

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

III. VFD Fault Analysis and Solutions

ERR01: Inverter Unit Protection

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

ERR02: Acceleration Overcurrent

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

ERR05: Acceleration Overvoltage

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

ERR10: VFD Overload

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

ERR15: External Device Fault

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

ERR18: Current Detection Fault

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

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

Posted on 2024年10月2日2024年10月2日 by baiyuzhan — Leave a comment

EV510 VFD User Manual and Operation Guide for Oulu

I. Introduction to Operation Panel Functions

Schematic diagram of EV510 VFD operation panel

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

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

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

III. VFD Fault Analysis and Solution

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

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

Month: October 2024