The main problems of the iron core of the small electromagnetic relay are that the armature cannot be sucked after being electrified:
This may be due to broken coils, foreign matter between the moving and static cores, and low power supply voltage. It should be patched on a case-by-case basis.
When energized, the armature is noisy:
This may be due to uneven contact surfaces between moving and static cores, or oil contamination. When the module relay is repaired, the coil should be removed and its contact surface should be filed or smoothed; If there is any oil stain, it should be cleaned. The noise may be caused by short circuits and ring cracking, and it is sufficient to repair or replace a new short circuit ring.
After a power outage, the armature cannot be released immediately:
This may be due to the moving core being stuck, the air gap of the core being too small, the tension spring being strained, and the contact surface of the core being oiled. When overhauling the general relay, it should be treated differently according to the cause of the problem, or adjust the air gap to make it maintain at 0.02-0.05mm, or replace the tension spring, or clean the oil with gasoline.
Burnout of the heating element:
This may be due to a short circuit on the load side, or a heat element that operates too frequently. During maintenance, the heating element should be replaced and the setting value should be adjusted from scratch. In the case of thermal relays, the sensing tissue is a thermal element. The common problem is the burning out of the heating element, or the malfunction and non-operation of the heating element.
Thermal element malfunction:
This may be due to the setting value is too small, the action is not overloaded, or there is a strong impact and oscillation in the application situation, which loosens the action tissue and trips and causes malfunction. The thermal element does not act. This may be caused by the setting value being too small, which makes the thermal element lose its overload maintenance function. During maintenance, the setting current should be adjusted according to the load operating current.
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Precautions for long-term idle use of Delta inverter
If the inverter is to run the equipment again after being shelved for more than half a year, the probability of damage may be greatly increased due to many factors such as the placement environment, the service life of the inverter, and the load rate, and the failure usually presents the following problems:
1. After the equipment is powered on, it becomes ...
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Delta's various PLC series
At present, Delta PLC has ES, EX, EH2, PM, SA, SC, SS, SX, SV and other series. Each series of models has its own characteristics to meet different control requirements.
The ES series is cost-effective and can be controlled sequentially.
EX ...
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Selection of braking resistors for Delta inverters
1. The necessity of braking resistance
If the regenerative energy that occurs during deceleration and descent in the application is too large, there is a possibility that the voltage of the main circuit inside the inverter will rise, causing damage.
Because usually the inverter has a built-in overvoltage maintenance function, the main circuit overvoltage (O...
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Ways to reduce the failure rate of Delta drives
If you want to reduce the fault rate of Delta inverter, it is necessary to check it daily, and what are the detailed items?
Delta inverter fault repair ...
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Delta launched an integrated control solution for layer winding
As factories move from automation to intelligence, the requirements for equipment performance and scalability are progressing day by day. In response to the rapid development of electronic engineering, transportation and mechanical engineering and other occupations, in order to quickly manufacture related product parts and components, metal coil winding technology is also being carried out at a high speed.
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Delta's key steps in inverter maintenance
First, the maintenance of the inverter must first check whether the sound in the operation of the motor has changed abnormally, including, whether the motor is in operation to form a sensation.
2. Check whether the natural environment of the inverter installation has changed. For example, whether the operating temperature is normal. Learn more about Delta's inverter ...
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Delta touch screen models and advantages
Human Machine Interface (HMI) is a digital product that allows operators to communicate with automation equipment. The human-machine interface provides a variety of communication ports to facilitate communication with a variety of equipment, and the touch panel allows the operator to intuitively set parameters.
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Delta's A2 server maintenance location controller is faulty
Delta's A2 series servo system is one of the more common and used servers on the market today, and the following describes the fault details of the azimuth controller in the repair of Delta's A2 servo drive and the corresponding repair methods
Delta ...
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Analysis of communication problems of Delta inverters
Problem Clarification:
Communication Transmission Timeout: The Modbus transmission between the VFD and the Keypad times out
Solution:
VFD does not respond to Keypad's communication commands.
1. Confirm the communication quality of the communication wiring and contacts.
2. Please use the RESET key to clear the Fault ...
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Characteristics of common models of Delta inverters
Delta MS300 Inverter Series: Delta's compact standard vector-operated inverter MS300 combines the advantages of miniaturization, high functionality, high trust, and simple installation, transforming every investment in industrial resources into abundant results. Optimized structure with lock-free screw terminals to plan the supply of bento ...
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Delta's M series inverter communication parameter address problem
In Delta's M series inverters, the parameter address 2000H corresponds to abort, start, JOG, and forward, rotation, and change direction. Why is "aborted" at the time of writing the program H01, "start" is H10, "forward" is H12, and "rotation" is H22.
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Replaced by discontinued models of Delta inverters
Delta's new generation of compact and efficient vector-controlled inverter MH300, adhering to the good driving function of Delta's inverter, has six advantages: compact size, flexible application, stable system, reliable quality, and easy installation.
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Delta inverter parameter replication error solved
1. SE2 parameter imitation error
Problem Description:
Keypad Imitation Function Fault Correction 2
Solution:
1. The Keypad imitation action is completed, and the inverter parameters are written into error
2. SE1 Parameter Imitation ...
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Common problems with compact pressure transmitters – Delta
1. The transmitter does not return to zero under no pressure?
Answer: The cleaning method is to remove the transmitter from the device position, investigate whether the zero position is normal, and replace the pipeline sealing ring if it is normal. Check together whether the transmitter is perpendicular to the piping assembly, and if not, adjust the transmitter zero.
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Delta's powerful NT series industrial-grade UPS
Delta's NT series industrial-grade UPS has always been an ideal choice for applications that require high power safety due to their high reliability and high-density planning. IGBT high-frequency switching sinusoidal pulse width modulation technology planning, which makes UPS have good power supply quality, high efficiency, low heat loss, noise ...
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Important parameters of Delta inverters
The inverter is the pioneering work of Delta Automation, and it is also the largest selling product of Delta Automation. In the highly competitive market, Delta inverters have always maintained a strong growth momentum and made great achievements in the high-end product market and the economic product market. Delta continues to launch high-end products ...
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Delta's inverter is powered on and commissioned
After the installation of the Delta inverter is completed, disconnect the output of the inverter, use the diode file of the digital meter to measure the input and output of the inverter before the power is not turned on to ensure that there is no short circuit, and then turn on the operating power supply of the inverter.
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Synchronous control parameter setting method for two or more inverters - Delta
Step 1
Two inverters, two wires, and one power supply.
Step 2
The inverter wiring defines the two inverters as a master and a slave respectively, the host port 485A is connected to the slave port 485A, and the host port 485B is connected to the slave port 485B.
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Delta's inverter power-on debugging method
After the inverter is installed, disconnect the output of the inverter, use the diode file of the digital meter to measure the input and output of the inverter before the power is not turned on, ensure that there is no short circuit, and then turn on the working power supply of the inverter.
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The energy-saving principle of inverter - Delta
In order to ensure the reliability of production, all kinds of production machinery are designed with power drive, and there is a certain surplus when designing and matching power drive. When the motor cannot operate at full load, in addition to reaching the power drive requirements, the residual torque increases ...
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