Methods for preventing and controlling high-current contactor contact heat - Delta

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. Due to the built-in overvoltage maintenance function in the inverter, the overvoltage of the main circuit (O ...

With the increasing demand for system switching power supply by computer technology, Delta UPS uninterruptible power supply R-2K series products have been paid more and more attention, and gradually developed into a kind of electrical engineering with the effects of voltage stabilizer tube, frequency stabilization, filtration, anti-electromagnetic and frequency emission influence, anti-operation voltage swimming, etc.

Delta's thermostats are only available in the DTE series (variety 1.5 and above) with the "slope control" function. Illustrate the following examples: For example: PV=20°C, SV=100°C, slope 10.0°C/min Then (100 – 20)/10.0 ...

There are many models of Delta's power supplies, and the currents and functions supported are also different, so how to choose? 　　VX Series Power Supplies. VX270: Active PFC270w, but 12v is still small and can only be used at low power. Active PFC and 12v output up to 276w at 300...

1. Set temperature: Press the SET button to set or view the temperature set point. Press the SET key digital tube character beginning flash, indicating that the appearance has entered the setting state, press the △ key to increase the set value, press the ▽ key to decrease the set value, press and hold the △ key or ▽ key The data will change rapidly, press the SET key again The appearance back ...

Before operating the MS300 series products, please read and pay attention to the relevant safety information to ensure your own safety and product safety. When operating the wiring and installing the inverter, it is necessary to confirm that the power supply is closed. After blocking the communication power supply, the inverter POWER indicator (located in ...

1. Overvoltage The output of the inverter has the function of voltage detection, and the inverter can actively adjust the output voltage so that the motor does not withstand overvoltage. Even when the output voltage adjustment fails and the output voltage exceeds 110% of the normal voltage, the inverter will be shut down and the motor will become infected. ...

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 ...

1. The motor is broken shaft 1. The cause of the problem (1) Unreasonable mechanical design leads to excessive radial load force; (2) The load end is stuck or severely overloaded; (3) The motor and reducer are not centered when installed. 2. Eliminate problems (1) Check the ...

The transformer DC resistance tester uses the 32-bit ARM core as the processing center to control the whole machine, actively complete the functions of self-calibration, current stabilization judgment, data processing, resistance value display, etc., and can measure the DC resistance of various types of transformers and transformers. ...

1. VFD-B series This series has a variety of communication voltage standard model options, in addition to providing a variety of I/O signal functions, and can supply the appropriate current and voltage vector value according to the external load torque, to meet the needs of customers with high quality and low price. ...

1. How to set the acceleration and deceleration time of Delta inverter? Solution(s): The acceleration time of Delta's inverter is the time it takes for the driver to accelerate from 0.0Hz to "high operating frequency". Deceleration time refers to the deceleration time required for the inverter to decelerate from "high operating frequency" to 0.00Hz.

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: ...

Delta was established in 1971 to provide power supply and heat dissipation treatment programs for the world. Over the past 20 years, Delta's development in Chinese mainland has become increasingly deep-rooted, and its business operations cover development, production, sales and service. With innovative skills, we will continue to strengthen engineering research and development equipment and sophisticated testing ...

The main way to use the inverter is to change the output frequency to achieve the controllability of the motor speed, so do you know what steps are required to complete the output frequency controllability? One of the main points is how to complete the change of the frequency signal supplied by the inverter equipment.

1. When the device is installed, leave the place with high voltage and strong high-frequency noise to prevent disturbance. Prevent use in places where the following conditions occur: (a) Excessive dust and corrosive gases; (b) high humidity and very high radiation; （c） ...

Delta's inverter problem 1: Communicate with the motor driver to explore the formation of overvoltage conditions on the internal DC high-voltage power supply side Check whether the keyed operating voltage is in the field of the additional value of the communication motor driver keying operating voltage, and detect whether there is a surge operating voltage formation If it is due to ...

1) When taking out or placing the servo motor, it is not possible to only pull the wire and drag the motor or only hold the rotating shaft core. 2) Do not hit the shaft directly, e.g. by tapping or hammering, as this may cause damage to the shaft and the encoder attached to the opposite side of the shaft. 3) Give the shaft core ...

Daily inspection item 1 of Delta's inverter problem repair: Check whether there is any abnormal change in the sound of the motor during operation, including whether oscillation occurs during the operation of the motor. Delta's daily inspection of inverter problem repair ...

1. Parameters to be set for the motor When the inverter (hereafter referred to as the -VFD) is operating in the "vector control" (F0-03=1) mode, it is highly dependent on accurate motor parameters, which is one of the important differences from the "VF controlled" (F0-03=2) mode. In order for the VFD to have outstanding driving ...