GE IS200VCMIH2CAA | Lower terminal connection base plate of VCMI ( IS215VCMIH2CA main control card, Mark VI gas turbine triple redundant communication system 

IS200VCMIH2CAA physical object 

VCMI Board Front View

I. Model Matching Explanation

IS215VCMIH2CA (Upper Layer Main Control VME Board): Comes with a front panel of 3 IONet network ports and an RS232 debugging port. It is a VME bus master control card.

IS200VCMIH2CAA (Lower Layer Terminal Base Board): Vertically plugged into the bottom of the VCMI main control card, with connector lines interfacing with the on-site I/O terminal board of the cabinet. CAA is a PCB modification model, fully compatible and interchangeable with BCD/BCC hardware pins, belonging to the VCMI complete set of components.

VCMI = VME Communications Interface. GE Speedtronic Mark VI 6U standard VME rack-specific, original factory product, discontinued spare parts.

Hardware Electrical Parameters

Processor (Upper Layer IS215VCMIH2CA): TI TMS320C32 32-bit DSP, 40MHz frequency; 32KB dual-port DPRAM + onboard backup SRAM, onboard lithium battery for data power saving

Power Supply: Backplane DC5V/6A power supply, approximately 3.3W power consumption for the entire card; auxiliary power supply circuit of 28VDC in the system cabinet

Panel Interface (Main Control IS215VCMIH2CA)

3 independent IONet industrial Ethernet ports (triplex redundant networking), connecting X/Y/Z three sets of TMR controllers, remote IO racks, and upper-level HMI

1 9-pin RS232 debugging serial port + hardware reset button, four running status LED indicators (power / communication / fault / operation)

Base Board IS200VCMIH2CAA: J3/J4 multi-core cable socket, responsible for electrical connection and signal filtering isolation between the main control and the on-site hardwired terminals, without external network ports, full SMT surface mount technology process, with onboard fuse protection

Environmental Parameters: Operating temperature 0℃～+60℃, storage - 40℃~+85℃, humidity 5%~95% without condensation; net weight ≈1.27kg, standard 6U VME size 168×150×55mm

Core Functions

VME Rack Bus Master: Controls all CPU cards, DI/DO/AI/AO cards, ETS trip cards, speed acquisition cards in this rack, bus arbitration and data interaction for the entire rack; no VCMI rack-level IO disconnection

IONet Global Network Communication Hub: Issuing main control instructions for the unit, transmitting local measurement point data back, hardware three-out-of-three voting for the three network ports, single-channel network port disconnection does not cause machine shutdown, does not affect the control logic of the unit

Terminal Signal Relay: IS200VCMIH2CAA separates the main control board from the on-site cables, optimizes the wiring inside the cabinet, facilitating fault line inspection, on-site maintenance, and replacement of terminal circuits

System Configuration and Debugging: Combined with ToolboxST software for parameter configuration, online diagnosis, firmware upgrade, with onboard hardware self-check program

Application Scenarios

GE 6FA/9E/9FA Heavy-duty Gas Turbine, combined cycle steam turbine unit DEH/ETS protection system, large-scale turbine compressor of refining and chemical plants Mark VI main control rack core communication component (standard for TMR triple-redundant main control cabinets)

V. Distinction of Series Models Table

Model combination Architecture Usage

IS215VCMIH2CA + IS200VCMIH2CAA TMR with three redundancies Main control protection cabinet for the unit (main production model)

IS215VCMIH2BB + IS200VCMIH2BXX Simplex single channel Auxiliary lubrication station, cooling system, ordinary IO cabinet

IS215VCMIH2BC + IS200VCMIH2BCD High-end TMR High-power 9FB heavy-duty gas turbine main control cabinet