Product Overview

These are all different components in ABB's REF542 PLUS series products. The following is an introduction to them:

REF542 PLUS 751021/802 REV 1.0 motherboard: It is the core motherboard of the REF542 PLUS system, carrying the main control and computing functions of the entire system. It is responsible for coordinating the work among various modules, processing data from various sensors and input devices, and sending control instructions to output devices to achieve protection, control and monitoring of the power system or other related industrial equipment.

REF542 PLUS 751021-802D REV 1.1 motherboard: Similar in function to the 751021/802 REV 1.0 motherboard, there may be improvements or differences in hardware design, interface types or performance parameters. For example, the circuit layout might have been optimized and the anti-interference ability enhanced; Or certain specific communication interfaces have been added to better adapt to different application scenarios and system integration requirements.

REF542 PLUS 750161-802 REV 1.2 Binary Input/Output: This module is mainly used for collecting and output binary signals, that is, digital quantity signals. It can receive digital input signals such as switch status and relay contacts from external devices, and convert them into signal formats that the REF542 PLUS system can recognize and process. At the same time, the control instructions of the system can also be output in digital form to control the on-off of external relays, contactors and other devices, achieving logical control of industrial processes.

REF542 PLUS 750079-801 REV 1.4 Communication Board printed Circuit Board Assembly: Responsible for data communication between the REF542 PLUS system and other devices or systems. It supports multiple communication protocols, such as Modbus, Profibus, IEC 103, etc. It can be connected to the upper computer monitoring system, other intelligent electronic devices (IEDs) or fieldbus networks to achieve data transmission and interaction, so as to conduct operations such as remote monitoring, parameter setting and fault diagnosis of the equipment.

REF542 PLUS 750170-824 REV 1.3 Current Transformer and Voltage Transformer Assembly: Used for measuring current and voltage signals in power systems. By connecting to the primary equipment in the power system, the high-voltage and high-current signals are converted into low-voltage and low-current signals suitable for processing by the REF542 PLUS system, providing the system with accurate current and voltage measurement values for functions such as protection calculation, electricity metering and fault analysis.

REF542 PLUS 750141-801C REV 1.2 Long backplane printed circuit board assembly: It serves as the electrical connection and signal transmission channel among various modules in the REF542 PLUS system. It provides multiple slots and interfaces for inserting various functional modules, such as the motherboard, input/output modules, communication modules, etc., enabling these modules to be interconnected and perform data transmission. At the same time, it also undertakes functions such as power distribution, signal isolation, and anti-interference, ensuring the stability and reliability of the system.

REF542 PLUS 750126-801C REV 1.4 Power Supply board printed circuit board assembly: Provides a stable power supply for the REF542 PLUS system. It converts the external input AC or DC power into DC power of different voltage levels required by each module of the system, such as 5V, 12V, 24V, etc., providing power support for the normal operation of the system. It also has functions such as overvoltage protection, overcurrent protection and short-circuit protection to prevent power failure from causing damage to the system

Product Number: REF542 PLUS 751021/802  751021-802D 750161-802 750079-801  750170-824  750141-801C 750126-801C YMGK

Product Overview

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Product Number:REF542 PLUS 751021/802  751021-802D 750161-802 750079-801  750170-824  750141-801C 750126-801C YMGK

Status: 100% original

Warranty period: 12 months.

Payment method: T/T. RMB (CNY) is supported.

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REF542 PLUS 751021/802  751021-802D 750161-802 750079-801  750170-824  750141-801C 750126-801C YMGK Not what you want?

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