Product Introduction
โ๏ธ Product: IS200VCMIH2B
๐ท๏ธ Brand: General Electric (GE)
๐ง Series: Mark VI Speedtronic
๐ก Product Type: VME Communications Interface Board
The GE IS200VCMIH2B is a VME Communications Interface (VCMI) board developed for the GE Mark VI turbine control system. It is installed in the Central Control Module and provides internal communication between I/O boards in the rack and communication with other control or protection modules through the IONet network.
๐ The board is designed for VME rack installation and includes three IONet interfaces, an RS-232 serial interface, and a parallel interface. The three IONet ports are particularly relevant to Mark VI redundant configurations, where the VCMI communicates with multiple I/O channels and other control modules.
๐ก The IS200VCMIH2B is a revision-B version with an attached front faceplate. The faceplate includes IONet1, IONet2, IONet3 connectors, a reset switch, a 9-pin serial connector, and multiple diagnostic LEDs.
Product Datasheet
๐น Model: IS200VCMIH2B
๐น Brand: GE / General Electric
๐น Series: Mark VI Speedtronic
๐น Product Type: VME Communications Interface / VME Bus Master Controller Board
๐น Functional Acronym: VCMI
๐น Board Format: 6U VME
๐น Processor: TMS320C32
๐น IONet Interfaces: 3 ร 10Base2 Ethernet, BNC connectors
๐น IONet Speed: 10 Mbps
๐น Serial Interface: 1 ร RS-232C, 9-pin D-sub
๐น Serial Speed: 9,600 / 19,200 / 38,400 bps
๐น Parallel Interface: 1 ร 8-bit bidirectional EPP
๐น VME Function: VME bus master / internal rack communication
๐น Memory: 32 KB dual-port memory; SRAM and Flash memory configuration dependent
๐น Functional Revision: B
๐น Assembly: Normal Assembly
๐น Mounting: Mark VI Central Control Module / VME Rack
๐น Dimensions: Approx. 26.2 ร 16 ร 2 cm*
๐น Weight: Approx. 0.8โ1.2 kg*
๐น Country of Origin: USA
*Dimensions and weight vary between published records and may refer to the board alone or shipping configuration. The core interface and processor specifications are supported by available technical references.
Typical Applications
๐ฅ GE gas turbine control
๐จ GE steam turbine control
โก Power generation plants
๐ญ Industrial turbine automation
๐ก Mark VI IONet communication
๐ Simplex and TMR control architectures
๐ ๏ธ GE Mark VI maintenance and replacement
Installation & Use
๐ ๏ธ Before installation, verify the complete IS200VCMIH2B part number, functional revision, faceplate configuration, Mark VI rack position, and existing system architecture.
๐ The VCMI is installed in slot 1 of the Central Control Module. Check the VME backplane connectors and ensure the board is correctly seated before applying power.
๐ก Connect IONet wiring according to the existing Mark VI configuration. For redundant systems, verify the three IONet connections and associated control-module communication paths.
๐ก After startup, check the diagnostic LEDs and reset/status functions. Confirm communication with the I/O boards and other control modules through the IONet network.
๐ Verify VME communication, serial communication where applicable, I/O data exchange, and system diagnostics before returning the turbine control system to normal operation.
โ ๏ธ Replacement note: IS200VCMIH2B and related VCMI variants can look very similar while having different revisions or system configurations. Match the complete part number and hardware revision before substitution.
