I. Model Classification (Core Differences)

IS200MVRAH2AFC: Bare PCB main control sub-board (the main circuit board itself), FC = Version Revision + Three-Defense Coating, installed inside the IS210 enclosure, Mark VI old architecture base board

IS210MVRAH2A: Complete machine boxed product (with metal casing + front panel), built-in IS200MVRAH2AFC mainboard, Mark VIe new integrated I/O module, EX2100 generator excitation + diesel engine main control dual-purpose

MVRA Full Name: Multi-Variable Remote Analog I/O, Multi-variable remote analog I/O interface card, replacing the old Mark V TCQA/IOMA board card (common spare parts for unit modification)

System Classification

GE Speedtronic Mark VI / Mark VIe generator / turbine control system + EX2100 full series generator excitation control system, compatible with TMR triple-redundancy, single-redundancy architecture, standard for thermal power / combined cycle power plants.

Hardware Channels & Electrical Parameters

1. Signal Acquisition Channels (Integrated Various On-site Signals)

Thermocouple / Thermoresistor AI: Unit cylinder temperature, shaft temperature measurement

Eddy current probe input: Shaft vibration, axial displacement (Proximitor)

Pulse frequency input: Speed sensor, speed gear pulse

LVDT / Servo Valve Feedback: Valve position feedback of regulating valve oil motive

PT/CT Generator Voltage Current Acquisition: EX2100 excitation machine stator, rotor voltage sampling

Switching Quantity DI/DO: Excitation interlock, protection trip, local limit signal

2. Electrical Specifications

On-board 2 channels on-board DC-DC isolated power supply, backplane + external dual power supply, power consumption ≈ 12W

Operating Temperature: 0℃~+65℃ (natural cooling without fan, natural heat dissipation), FC coated version moisture-proof, dew-proof, resistant to power plant salt fog

Net Weight: ≈ 340g (12oz), standard I/O Pack slot installation size

Communication: High-speed PVME serial bus + UDH unit data bus, connected to PMVE processor backplane

Core Functions

EX2100 excitation signal pre-processing: Rectifier cabinet rotor current, generator terminal voltage signal acquisition and analog-to-digital conversion, pre-capture board for excitation regulation closed-loop operation

Centralized connection of generator body sensors: Vibration, temperature, speed, regulating valve feedback summary, upload to main control CPU

Hardware and software self-diagnosis: Channel break, power failure, bus fault, fault code upload to ControlST upper software, panel RUN/FAIL status indicator lights

Replacement for old units during modification: When upgrading from Mark V to Mark VIe, directly ｒｅｐｌａｃｅ the old TCQA, IOMA cards, wiring compatible modification preferred

Application Scenarios

EX2100 static excitation control cabinet for thermal power turbine generator (primary use)

GE heavy-duty gas turbine (9FA/6FA) Mark VIe main control cabinet I/O slots

Control system for combined cycle power plants, offshore LNG gas generator sets