9. Electronic thermal overload protection This function is set to protect the motor from overheating. It is used by the CPU in the Inverter to calculate the temperature rise of the motor based on the operating current value and frequency, thereby providing overheating protection. This function is only applicable to "one to one" situations, and in "one to many" situations, thermal relays should be installed on each motor. Electronic thermal protection setting value (%)=[Motor rated current (A)/Inverter rated output current (A)] × 100%.   10. Frequency limitations The upper and lower limits of the frequency output amplitude of the Inverter. Frequency limit is a protective function designed to prevent incorrect operation or failure of external frequency setting signal sources, which may cause excessive or low output frequency, in order to prevent damage to equipment. Set according to the actual situation in the application. This function can also be used for speed limiting. For some belt conveyors, due to the limited amount of material conveyed, in order to reduce mechanical and belt wear, an Inverter can be used for driving, and the upper frequency limit of the Inverter can be set to a certain frequency value, which can make the belt conveyor run at a fixed and lower working speed.   11. Bias frequency Some are also called deviation frequency or frequency deviation setting. Its purpose is to adjust the output frequency when the frequency is set by an external analog signal (voltage or current), and this function can be used to adjust the output frequency when the frequency setting signal is at its lowest. When the frequency setting signal of some Inverters is 0%, the deviation value can be applied within the range of 0 to fmax, and some Inverters (such as Mingdian House and Sanken) can also set the bias polarity. If during debugging, when the frequency setting signal is 0%, the output frequency of the Inverter is not 0Hz, but xHz, then setting the bias frequency to a negative xHz can make the output frequency of the Inverter 0Hz.   12. Frequency setting signal gain This function is only effective when setting the frequency using an external analog signal. It is used to compensate for the inconsistency between the external set signal voltage and the internal voltage of the Inverter (+10v); At the same time, it is convenient to select signal voltage for analog settings. When the analog input signal is at its maximum (such as 10V, 5V, or 20mA), calculate the frequency percentage that can output the f/V graph and set it as a parameter; If the external signal is set to 0-5V, and the output frequency of the Inverter is 0-50Hz, set the gain signal to 200%.   13. Torque limitation It can be divided into two types: driving torque limit and braking torque limit. It is based on the output voltage and current values of the Inverter, and torque calculation is carried out by the CPU. It can significantly improve the impact load recovery characteristics during acceleration, deceleration, and constant speed operation. The torque limiting function can achieve automatic acceleration and deceleration control. Assuming that the acceleration and deceleration time is less than the load inertia time, it can also ensure that the motor automatically accelerates and decelerates according to the torque setting value. The drive torque function provides powerful starting torque. During steady-state operation, the torque function controls the motor slip and limits the motor torque to the maximum set value. When the load torque suddenly increases, even if the acceleration time is set too short, it will not cause the Inverter to trip. If the acceleration time is set too short, the motor torque will not exceed the maximum set value. A high driving torque is beneficial for starting, and setting it at 80-100% is more appropriate. The smaller the braking torque setting value, the greater the braking force, which is suitable for situations of rapid acceleration and deceleration. If the braking torque setting value is set too much, overvoltage alarm phenomenon may occur. If the braking torque is set to 0%, the total amount of regeneration applied to the main capacitor can approach 0, so that the motor can decelerate to a stop without tripping when decelerating without using the braking resistor. However, on some loads, such as when the braking torque is set to 0%, there may be a brief idle phenomenon during deceleration, causing the Inverter to repeatedly start and the current to fluctuate significantly. In severe cases, it may cause the Inverter to trip, and attention should be paid.   14. Acceleration and deceleration mode selection Also known as acceleration/deceleration curve selection. Generally, Inverters have three types of curves: linear, nonlinear, and S, and most of them choose linear curves; Nonlinear curves are suitable for variable torque loads, such as fans; The S-curve is suitable for constant torque loads, and its acceleration and deceleration changes are relatively slow. When setting, the corresponding curve can be selected based on the load torque characteristics, but there are exceptions. When debugging the Inverter of a boiler induced draft fan, the author first selects a non-linear curve for the acceleration and deceleration curve, and when the Inverter is operated together, it trips. Adjusting and changing many parameters has no effect, and then changing it to an S curve will be normal. The reason for this is that before starting, the induced draft fan rotates on its own due to the flow of flue gas and reverses to become a negative load. This selects the S-curve, which slows down the frequency rise speed at the beginning of the start, thus avoiding the occurrence of Inverter tripping. Of course, this is the method used for Inverters without DC braking function for starting.   15. Torque Vector Control Vector control is based on the theory that asynchronous motors and DC motors have the same torque generation mechanism. Vector control method is to decompose the stator current into specified magnetic field current and torque current, and control them separately, while outputting the combined stator current to the motor. Therefore, in principle, the same control performance as a DC motor can be obtained. By using torque vector control function, the motor can output maximum torque under various operating conditions, especially in the low-speed operating area. Nowadays, almost all Inverters adopt non feedback vector control. Due to the ability of Inverters to compensate for slip based on the magnitude and phase of the load current, the motor has very hard mechanical characteristics, which can meet the requirements for most occasions without the need to set a speed feedback circuit outside the Inverter. The setting of this function can be selected between valid and invalid according to the actual situation. The related function is slip compensation control, which is used to compensate for speed deviation caused by load fluctuations, and can add the slip frequency corresponding to the load current. This function is mainly used for positioning control.   16. Energy saving control Fans and water pumps both belong to reduced torque loads, meaning that as the speed decreases, the load torque decreases proportionally to the square of the speed. Inverters with energy-saving control functions are designed with a dedicated V/f mode, which can improve the efficiency of motors and Inverters. This mode can automatically reduce the output voltage of the Inverter based on the load current, thereby achieving energy-saving goals. It can be set to be effective or ineffective according to specific circumstances. It should be noted that the nine and ten parameters are very advanced, but some users are unable to enable these two parameters during equipment renovation, that is, the Inverter trips frequently after activation, and everything is normal after shutdown. The reason for this is that: (1) there is a significant difference in the parameters between the original motor and the motor required for the Inverter. (2) Insufficient understanding of parameter setting function, such as energy-saving control function can only be used in V/f control mode and cannot be used in vector control mode. (3) The vector control method has been enabled, but manual setting and automatic reading of motor parameters have not been carried out, or the reading method is incorrect.        Unleash the power of industrial automation with Rockss Automation, the leading provider of a diverse range of variable frequency drives, drivers, motors, and more. With our extensive inventory and dedicated repair team, we are your one-stop solution for all your industrial automation needs.

ABB is a famous brand in Europe and even the world. High and low voltage inverters, high and low voltage electrical appliances, transformers, motors, power generation equipment, etc. are its mature products, and are widely used in power plants, chemicals, paper making, metallurgy and other industries. It should be said that ABB's products have received unanimous recognition from a large number of users in China. The ABB Inverters occupy an important position in the Inverter market due to their stable performance, rich optional expansion functions, flexible programming environment, good torque characteristics, and various series that can be used in different occasions. The performance of ABB Inverters in the Chinese market is evident to everyone. ABB Inverters, with their strong brand effect and high social awareness, are at the forefront of the Chinese Inverter market. So, in the maintenance of ABB Inverters, customers often provide some fault codes, but engineers cannot understand how to handle and inspect these fault codes when they occur. Therefore, to determine a machine fault, we need to first understand the meaning of the fault code reported by ABB Inverter ACS800, so that we can quickly and accurately determine its fault, solve the problem in a timely manner, and avoid more losses. The following are basically all possible causes of overcurrent, which should be analyzed based on the actual process, equipment, and environmental conditions on site. 1. Sudden load change or stall. Method: Check the load, motor current, and mechanical parts of the system.   2. Close the output contactor. Method: If an output contactor is used, the modulation of the Inverter should be stopped first, and then the contactor should be disconnected. Note: There is no such restriction in SCALAR mode   ABB ACS800-04P-0320-3+P901 ACS800 Invert     3. Motor connection error. (Star angle connection) Method: Check the motor voltage and connection method on the motor nameplate and compare them with 99 sets of parameters.   4. The slope time is too short, so that the overcurrent controller does not have enough control time. Method: Check the load and increase the ramp time.   5.Speed or torque oscillation of the motor.       Method: [1] Caused by speed setting: Check if the speed setting value oscillates. [2] Caused by torque setting: Check if the torque setting oscillates. [3] Caused by overcompensation of speed response: Check the parameter settings of the speed regulator. (In some cases, Self-tuning may not bring satisfactory results.) [4] Caused by excessive feedback filtering time. [5] Caused by incorrect pulse encoder value: Check the waveform of the pulse encoder and check the number of pulses. [6] Caused by the motor model: Obtain correct motor data from the motor nameplate and compare 99 sets of parameters.   ABB ACS800-04-0210-3+P901 Inverter   6.Output short circuit: Damaged motor cable or motor.       Method: [1] Check the insulation of the motor and motor cables. [2] Disconnect the motor cable from the Inverter and operate the Inverter in scalar mode. If the Inverter does not trip, it indicates that the Inverter is good.   7. Output ground fault in grounded power grid.    Method: Check and measure the motor and motor cables using a megger or insulation gauge.   8. Incorrect motor and transmission selection.       Method: [1] Check if the rated current value of the motor is within. [Note 1/6-2 in DTC mode; 0-2 in scalar mode]. [2] Check the output current, torque, and limit words.   9. Power factor correction capacitors and surge absorbers. Method: Confirm that there are no power factor correction capacitors and surge absorbers on the motor cable.   10. Pulse encoder connection.    Method: Check the pulse encoder, pulse encoder wiring (including phase sequence), and xTAC module.   11. Incorrect motor data.    Method: Check and correct the motor data according to the motor nameplate.   12. Incorrect Inverter type.    Method: Compare the nameplate of the transmission with the software parameters.   13. There is no communication between the RMIO board and the RINT/INT and AGDR boards. Method: [1] Check and replace the optical fiber. [2] Check the flat cable.    ABB ACS800-04-0170-3+P901 Inverter   14. Overcurrent in scalar control mode       Method: [1] Check and replace the current transformer. [2] Check the output current, torque, and limit words.   15. Internal faults.       Method: [1] Check and replace the current sensor. [2] Replace the xINT board. [3] Confirm if the flat cable is properly connected. [4] Replace all optical fibers between the INTs board and the xPBU board. (In the case of parallel connections)   16. The Inverter of ACS800 reported 2310 as an overcurrent fault.        Method: Check if the motor cable is damaged and if the motor does not rotate. The relationship between 2310 and the Inverter is not significant, and it is basically a problem with the motor and cable.         With Rockss Automation, businesses no longer need to settle for just selling ABB products; we offer a holistic approach that combines seamless sales with comprehensive maintenance services. Our team of experts understands that a thriving business depends on more than just the initial purchase. That's why we go above and beyond to provide top-notch support throughout the entire product lifecycle.  

Overload is one of the frequent faults in Mitsubishi Inverter tripping. Overload faults include Mitsubishi variable frequency overload and motor overload, which may be caused by factors such as short acceleration time, excessive DC braking, low grid voltage, and excessive load. Generally, it can be solved by extending the acceleration time, extending the starting time, and checking the voltage of the power grid. When you see overload, you should first analyze whether it is the motor overload or the Mitsubishi Inverter itself overload. Generally speaking, due to the strong overload capacity of electric motors, as long as the motor parameters in the Mitsubishi Inverter parameter table are set properly, overload is generally not likely to occur. The Mitsubishi Inverter itself is prone to overload alarms due to its poor overload capacity. We can detect the output voltage and current detection circuits of Mitsubishi Inverters to eliminate faults one by one.   The main causes of overload in Mitsubishi Inverters: 1. The main characteristic of excessive mechanical load is the heating of the motor, which can be detected by reading the operating current on the display screen. 2. The unbalanced three-phase voltage causes the running current of a phase to be too large, which leads to overload tripping. Its feature is that the motor is heating unevenly, and it may not be found when reading the running current from the display screen (because the display screen only shows one phase current). 3. The current detection part inside the Mitsubishi Inverter that malfunctioned has malfunctioned, resulting in a large detected current signal and tripping.   Mitsubishi MR-A-2000S Inverter   Troubleshooting Methods for Overloading Mitsubishi Inverters 1. Check if the motor is heating up If the temperature rise of the motor is not high, first check whether the electronic thermal protection function of the Mitsubishi Inverter is preset reasonably. If there is still margin for the Mitsubishi Inverter, the preset value should be relaxed; If the allowable current of Mitsubishi Inverter is no longer sufficient and cannot be further relaxed, and according to the production process, the overload that occurs belongs to normal overload, it indicates that the selection of Mitsubishi Inverter is inappropriate. The capacity of Mitsubishi Inverter should be increased and replaced. This is because when the motor is dragging a variable load or intermittent load, as long as the temperature rise does not exceed the rated value, it is allowed to overload for a short period of time (several minutes or dozens of minutes), while Mitsubishi Inverters do not allow it. If the temperature rise of the motor is too high, and the overload that occurs belongs to normal overload, it indicates that the motor is overloaded. At this point, the first consideration should be whether the transmission ratio can be appropriately increased to reduce the load on the motor shaft. If possible, increase the transmission ratio; If the transmission ratio cannot be increased, the capacity of the motor should be increased. 2. Check whether the three-phase voltage at the motor side is balanced If the three-phase voltage at the motor side is unbalanced, check whether the three-phase voltage at the output end of the Mitsubishi Inverter is balanced again. If it is also unbalanced, the problem is inside the Mitsubishi Inverter. Check the inverter module and its drive circuit of the Mitsubishi Inverter. If the voltage at the output end of the Mitsubishi Inverter is balanced, the problem lies in the wiring from the Mitsubishi Inverter to the motor. It is necessary to check whether all screws at the terminals have been tightened. If there are contactors or other electrical appliances between the Mitsubishi Inverter and the motor, it is also necessary to check whether the wiring terminals of the relevant appliances are tightened and whether the contact conditions of the contacts are good. If the three-phase voltage at the motor side is balanced, the operating frequency at the time of tripping shall be understood: if the operating frequency is low and vector control (or no vector control) is not used, the U/F ratio shall be reduced first; If the load can still be driven after reduction, it indicates that the previously preset U/F ratio is too high, and the peak value of the excitation current is too high. The current can be reduced by reducing the U/F ratio; If the load cannot be carried after reduction, it should be considered to increase the capacity of the Inverter; If the Inverter has vector control function, vector control should be adopted. Mitsubishi MR-A-1000S Inverter   3. Check if Mitsubishi Inverter malfunctions When the cause is not found after the above inspection, it should be checked for any malfunction. The judgment method is to measure the output current of Mitsubishi Inverter with a Ammeter under light load or no load and compare it with the operating current value displayed on the display screen. If the current reading displayed on the display screen is much larger than the actual measured current, it means that the current measurement error inside the Mitsubishi Inverter is large, and the "overload" tripping may be a misoperation.     Unleash the power of industrial automation with Rockss Automation, the leading provider of a diverse range of variable frequency drives, drivers, motors, and more. With our extensive inventory and dedicated repair team, we are your one-stop solution for all your industrial automation needs.  

     Mitsubishi servo drivers may stop working due to various reasons such as improper operation or equipment failure during daily use. At this point, the cause of the fault should be confirmed according to the Mitsubishi servo driver alarm code before resolving it. Below we will analyze several common Mitsubishi servo driver alarm codes and solutions!    A.Mitsubishi servo driver alarm code : AL31.1  Fault analysis: It is a motor overspeed alarm.  Reason analysis: 1. Input command pulse frequency is too high; 2. Excessive overshoot caused by too small acceleration and deceleration time; 3. Mitsubishi servo system is unstable; 4. The electronic gear ratio is too large; 5. Mitsubishi servo encoder malfunction;  Corresponding processing methods: 1. Set the correct pulse frequency; 2. Increase the time constant of addition and subtraction; 3. Reset the gain; 4. Set the correct electronic gear ratio; 5. Replace Mitsubishi servo encoder or Mitsubishi servo motor;    B.Mitsubishi servo driver alarm code ALE6.1  Fault analysis: Mitsubishi servo motor emergency stop  Cause analysis: The line between Mitsubishi servo driver EMG and SG is disconnected  Corresponding handling method: Just short circuit the EMG    C.Mitsubishi servo driver alarm code AL52  Fault analysis: The stuck pulse in the deviation counter exceeds the resolution capability of Mitsubishi servo encoder multiplied by 10  Reason analysis: 1. The setting of the acceleration and deceleration time constant is unreasonable; 2. The torque limit value is too small; 3. Due to a decrease in power supply voltage, the motor torque is insufficient and the servo motor cannot start; 4. Position loop gain 1 is too small; 5. Due to external force, the servo motor shaft rotates; 6. Mechanical failure; 7. Encoder malfunction.   Corresponding processing method: 1. Set the correct acceleration and deceleration time constant (refer to the Mitsubishi servo motor user manual); 2. Increase the torque limit value; 3. Replace the Mitsubishi servo motor with a higher power; 4. Adjust the set value to the range where the Mitsubishi servo system can operate normally; 5. Increase torque limit value, reduce load, or choose Mitsubishi servo motor with larger output 6. Install the limit switch after checking the operating mode 7. Replace Mitsubishi servo encoder or Mitsubishi servo motor    Our company Rockss Automation provides Mitsubishi drive sales and repair services. Welcome to inquire!

   The Schneider LXM05CD10M2 Servo Driver is a motor control device produced by Schneider Electric. It is designed to precise control and positioning of servo motors in various industrial applications. The servo driver offers advanced features and capabilities, including high-speed and high-precision motion control, flexible configuration options, and a wide range of communication interfaces for seamless integration into different automation systems. Parameter: Number of phases in the power grid: single-phase Power supply voltage: 200... 240 V -15... 10% Continuous output current: 4 A on... 4 kHz                                              3.2 A on... at 8 kHz Nominal power: 0.75 kW at 4 kHz on Number of discrete inputs: 6 logical discrete inputs Analog input quantity: 1 Polarization method: Non polar impedance suitable for serial port Modbus Power supply voltage limits:170…264 V Power supply frequency limits:47.5…63 Hz Transient RMS output current: 6 A for 3 seconds at 8 kHz on 7 A for 3 seconds at 4 kHz on Line current: 6.7 A on... 240 V                      8.1 A on... 200 V Maximum prospective line Isc: 1 kA Switching frequency: 4 kHz                                   8 kHz Overvoltage category: III Instantaneous peak current: 60 A Maximum leakage current: 30 mA   Output voltage<=power supply voltage     The LXM05CD10M2 servo driver supports various motor types, including synchronous and asynchronous motors, and offers multiple control modes such as torque, velocity, and position control. It provides reliable and stable motor control with advanced algorithms and feedback mechanisms.    The servo driver has a compact and modular design, allowing for easy installation and integration into control cabinets or other equipment. It offers comprehensive diagnostic and monitoring functions to ensure smooth operation and facilitate troubleshooting.      With its robust construction and reliable performance, the Schneider LXM05CD10M2 Servo Driver is suitable for demanding applications in industries such as packaging, materials handling, robotics, and machine tools, where precise motion control and high-performance motor control are required. Welcome to place an order with us——Rockss Automation！