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PS1/240V 1MRS050639F —— The Power Supply of ABB RE_54_ Series Feeder Terminal

Time:Dec 25,2025

The RE_54_PS1_240V 1MRS050639F is a power supply board located inside the ABB RE_54_ rotating motor terminal. The main function of the 1MRS050639F is to provide a stable and reliable power supply for the entire RE_54_ rotating motor terminal. The auxiliary voltage and corresponding digital input rated voltage of the RE_54_PS1_240V are as follows:

The RE_54_ rotating motor terminal is part of the ABB distribution automation system. This terminal utilizes a multi-processor architecture, combining digital signal processing with a powerful CPU and distributed I/O processing to enable parallel operation and improve response time and accuracy. One application area of the RE_54_ rotating motor terminal is the primary protection system for generators and generator-transformer sets in small and medium-sized diesel, hydroelectric, and steam power plants. Another application area is the starting and normal operation protection of large and/or critical medium-voltage synchronous and asynchronous motors used in equipment such as pumps, mills, and crushers. The functionality of the motor terminal depends on the selected function level and is also related to the hardware configuration. Various protection, control, measurement, status monitoring, general, and communication functions can be activated within the I/O connection range, taking into account the total CPU load. The combination of required functions provides a cost-effective solution compared to traditional systems using separate products, and combined with relay configuration (IEC 61131-3 standard), allows the motor terminal to be easily adapted to different types of applications. The accurate execution of these functions relies on the support of the RE_54_PS1_240V 1MRS050639F power supply board.

Through the graphical HMI display, the control functions in the motor terminal can locally display the status of disconnectors or circuit breakers. In addition, the motor terminal allows the transmission of circuit breaker and disconnector status information to a remote control system. Controllable objects (such as circuit breakers) can be opened and closed via the remote control system. Status information and control signals are transmitted via a serial bus. Local control is also possible via buttons on the front panel of the motor terminal. The protection functions of this motor terminal are designed to provide selective short-circuit and ground fault protection for rotating motors. Furthermore, unlike most other power system components, rotating motors require protection against abnormal operating conditions such as overcurrent, load imbalance, overtemperature, overvoltage and undervoltage, overexcitation and underexcitation, overfrequency and underfrequency, and generator motoring operation. In addition, impedance protection is provided for line backup protection. Stall protection and a cumulative start counter are also provided for motor protection and start monitoring. The motor terminal measures phase currents, phase-to-phase or phase-to-ground voltages, neutral current, residual voltage, frequency, and power factor. Active and reactive power are calculated based on the measured currents and voltages. Energy can be calculated based on the measured power. Measured values can be displayed locally and remotely as scaled raw values. In addition to protection, measurement, control, status monitoring, and general functions, the motor terminal is also equipped with a large number of PLC functions, integrating various automation and sequential logic functions required for substation automation into a single unit. Data communication features include SPA bus, Modbus, or LON bus communication with higher-level equipment. Furthermore, LON communication combined with PLC functionality minimizes the need for hardwiring between motor terminals.

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Topteng Technology Trading Co., Limited

Established in 2010, Topteng has been a supplier of industrial automation spare parts for decades. Specialized in PLC, DCS, ESD and TSl fields, we provide the best automation solutions.

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Xiamen City, Fujian Province 361001

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