I. Model Interpretation (Assembly Relationship)

IS200MVREH1ABB: Bare PCB inner layer sub-board (MVRE signal conditioning board, ABB = three-proof coating version), embedded in the metal casing of IS215PMVPH1AA, MVRE = Multi-Variable Remote Excitation, dedicated excitation multi-channel remote analog conditioning board

IS215PMVPH1AA: Complete machine I/O module (with metal casing + front panel + wiring ports) = casing + backplane + built-in IS200MVREH1ABB main board, PMVP = Process Variable Pack, integrated I/O component for process variables

Used in a complete set, EX2100 excitation cabinet-specific core acquisition card, compatible with Mark VI / Mark VIe (9FA/6FA generator, steam turbine generator excitation system)

II. Hardware Channel Specifications (MVRE Board Core Acquisition)

1. Analog Acquisition (Exclusive Signals for EX2100 Excitation)

PT/CT terminal voltage, stator / rotor current (generator excitation closed-loop voltage regulation sampling, ±5V/0~5V AC small signal)

RTD / thermocouple temperature measurement: excitation rectifier cabinet, rotor winding temperature

LVDT position feedback: excitation voltage regulation servo mechanism travel signal

Eddy current sensor input: unit large shaft vibration, axial displacement

Frequency pulse input: generator speed, speed gear pulse signal

4-20mA industrial standard analog quantity: cooling water temperature, oil pressure, excitation power feedback

2. Digital DI/DO

Multiple isolation switch quantities: excitation fan interlock, rectifier bridge fault, system trip, local protection contact signals.

3. Electrical Parameters

Power Supply: Backplane of the rack 5VDC + onboard isolated DC-DC power supply, total machine power consumption ≈ 13W

Isolation: Full-channel optocoupling 1500VAC, anti-excitation high-power harmonic interference

Operating Temperature: -40℃~+70℃, ABB coated board moisture-proof, salt spray-resistant (power plant / coastal power plant)

Net Weight: Complete machine IS215PMVPH1AA ≈ 0.95kg, size 330×178×35mm

Core Functions

EX2100 excitation signal pre-processing: all primary side PT/CT signals of the generator excitation are scaled, filtered, AD analog conversion, data is transmitted via IONet bus to VCM main control card for operation by VCM master control card to achieve AVR automatic voltage regulation closed-loop control (the most critical acquisition board for excitation)

Combination of multiple source signals from the generator body: cylinder temperature, vibration, speed, valve feedback centralized collection, uploaded to Mark VIe master control for protection and speed regulation logic

Hardware self-diagnosis: channel disconnection, power abnormality, bus communication failure, panel LED fault indicator + ControlST upper-level fault code alarm

TMR three-redundancy compatibility: supports three-out-of-two excitation architecture, standard components for combined cycle power plants

Application Scenarios

GE EX2100 static excitation control cabinet (main application): steam turbine generator, heavy-duty generator 9FA/6FA excitation system

I/O slots of Mark VI/VIe generator main control cabinet, replacing the old Mark V TCQA excitation acquisition board (commonly used for unit renovation)

Excitation system expansion replacement for combined cycle power plants, offshore LNG generator sets, and self-owned power plants