ABB SDCS-PIN-48 3ADT220090R0043 Pulse Transformer Board

ABB SDCS - PIN - 48 3ADT220090R0043 Pulse transformer board is a key circuit board used in ABB electrical equipment. Here are some introductions about it:

Function

Pulse signal transmission and isolation: The main function is to transmit the pulse signal generated by the control circuit to the power device or other components that require pulse drive, and at the same time realize the electrical isolation between the signal source and the load. This helps to protect the control circuit from the influence of high voltage and high current, and improve the stability and reliability of the system.

Signal amplification and shaping: Amplify and shape the input pulse signal to ensure that the output pulse signal has sufficient amplitude, width and rising edge/falling edge characteristics to meet the driving requirements of the load device. For example, amplify the weak control signal to a level that can drive power devices such as power transistors or thyristors, and make the waveform of the pulse signal more regular and reduce signal distortion.

Electrical isolation and safety protection: The electrical isolation of the primary and secondary sides is realized through the pulse transformer, which can effectively prevent the electrical fault on the high-voltage side from affecting the low-voltage control side, avoiding equipment damage and personnel safety accidents. At the same time, it can also suppress electromagnetic interference, reduce noise and interference signals in the system, and improve the system's anti-interference ability.

Working principle

It works based on the principle of electromagnetic induction. When the pulse signal output by the control circuit is applied to the primary winding of the pulse transformer, an alternating current will be generated in the primary winding, and then an alternating magnetic field will be generated in the iron core. According to the law of electromagnetic induction, this alternating magnetic field will induce corresponding pulse voltage and current in the secondary winding, thereby transmitting the pulse signal from the primary side to the secondary side. By reasonably designing the parameters such as the turns ratio, core material and winding structure of the pulse transformer, functions such as signal amplification, shaping and electrical isolation can be achieved.

Application scenario

It is commonly used in ABB's power electronic equipment such as frequency converters, inverters, and motor drivers. In these devices, it is necessary to accurately control the conduction and shutdown of power devices to achieve the adjustment of motor speed, voltage, current and other parameters. For example, in the motor drive system in the field of industrial automation, it is used to transmit the pulse signal sent by the controller to the power module in the frequency converter, and control the frequency converter to output the appropriate voltage and frequency to drive the motor to run at the required speed and torque.

Features

High reliability: using high-quality materials and advanced manufacturing technology, it can operate stably for a long time in harsh industrial environments, with anti-vibration, anti-shock, high temperature resistance, moisture resistance and other characteristics, and can adapt to different working conditions.

High-precision signal transmission: It can accurately transmit and process pulse signals to ensure that the transmission delay of the signal is small and the distortion is low, so as to achieve precise control of power devices and improve the performance and efficiency of the equipment.

Good electrical isolation performance: It provides efficient electrical isolation, and the isolation voltage can usually reach thousands of volts or even higher, effectively protecting the safety of equipment and personnel, while reducing the impact of electromagnetic interference on the system.

Compact structural design: It is small in size and compact in structure, which is easy to install in the limited space inside the equipment, which is conducive to the miniaturization and integrated design of the equipment.