ABB

ABB 1MR505643 Main Control Board for REM545 Rotating Machine Protection Terminal

Warranty： 365 days
Quality: Original module
Condition： New / Used
Warehouse: Spot
Delivery time: Shipped in 3 days after payment
Mailbox：plcvarious@foxmail.com

+086 18205988494

Introduction

1.Function

Core Signal Acquisition & Processing Collect analog current and voltage signals from CT/PT sensors, sample and convert analog signals into digital data for protection algorithm calculation.
Protection Logic Execution Run embedded protection algorithms including differential protection, overcurrent, earth fault, overvoltage/undervoltage, reverse power, thermal overload, unbalanced load and frequency protection. Output trip/interlock signals once fault conditions are detected.
Measurement & Data Calculation Calculate real-time electrical parameters: phase current, phase voltage, active/reactive power, power factor, frequency and energy. Process RTD temperature signals from generator or motor bearings and stator windings.www.plcva.com
HMI & Local Interface Management Communicate with the front panel display unit, transmit real-time measurements, alarm messages, fault records and mimic diagram data to the local HMI. Receive parameter setting commands from the front keypad.
Communication Gateway Manage multiple communication buses (SPA bus, Modbus, LON bus). Exchange data with substation SCADA and DCS systems for remote monitoring, remote parameter configuration and event uploading.www.plcva.com
Event Recording & Disturbance Storage Record fault event logs, alarm history and waveform disturbance data for post-fault analysis. Support internal self-diagnosis of hardware status and report board-level failures.
Programmable Logic Control Execute IEC 61131-3 customized bay logic, breaker interlock and sequence control to reduce the requirement of external auxiliary relays.

ABB 1MR505643 Main Control Board Physical photo

ABB 1MR505643 Main Control Board Physical photo

2. Applications

Installed inside the ABB REM545 rotating machine protection terminal cabinet, serving as the central computing and control hardware.
Core spare replacement component for maintenance. When the original main control board fails, replace it with 1MR505643 to restore full functions of REM545 protection relay.
Applicable equipment: Medium & small generators, synchronous motors and large asynchronous motors.
Typical industries: Hydropower plant, diesel power station, thermal power plant, oil & gas, mining and industrial power substations.