GE IS200VCMIH2B IS200VCMIH1B Mark VI Controller module

The IS200VCMIH communication interface board is designed to be installed in slot one of the central control module.
Features:
Communication control: As the bus master controller, it is an internal communication control card that manages VME bus data transmission, realizes operation synchronization between system components, allows I/O cards in the rack or other control or protection modules to communicate with each other, and plays a key role in multi-redundant systems. For example, in a triple redundant system, three VCMI cards are installed in different control modules, and data is exchanged and voted between cards and executed by the processor card.
Protocol support: Use IEEE 1588 protocol IONet for inter-module data transmission. IONet is a dedicated Ethernet designed by GE for I/O components and controllers on Mark series cards.
Status indication: The front panel has a 9-pin serial port, three DIN connectors (IONet1, IONet2 and IONet3), a reset switch and twenty LED indicators, which can be used to view and judge the working status of the device.

The two versions of the VCMI are shown in the following figure:

Product Diagnostics:

The internal +5 V, ±12 V, ±15 V, and ±28 V power supply buses are monitored and alarmed. The alarm settings are configurable and usually set at 3.5%, except for the 28 V supplies, which are set at 5.5%.

Diagnostic signals from the power distribution module (PDM), connected through J301, are also monitored. These include ground fault and over/under voltage on the P125 V bus,two differential ±5 V dc analog inputs, P28A and PCOM for external monitor circuits,and digital inputs.

Hardware Characteristics and Interface Design
Physical Specifications
6U VME standard board: Height 6U, Width 0.787 inches, complies with VME64x standard, can be seamlessly integrated into the Mark VI chassis.
Processor and Memory: Equipped with TI TMS320C32 32-bit DSP chip for processing complex signals; 32KB dual-port SRAM supports high-speed data cache.
Interface Configuration
Communication Ports:
3 IONet 10Base2 Ethernet ports (TX/RX/CD LED indicators).
1 RS-232C serial port (D-type connector, baud rate 9600), used for local debugging or configuration.
Power Supply and Diagnostics:
Power is obtained through J301 backplane connector and analog/digital power status signals are fed back.
The internal power bus monitoring threshold can be customized (e.g., 28V power alarm defaults to 5.5%, other voltages default to 3.5%).
Anti-interference Design
Integrated 50+ integrated circuits (including oscillator chip) and 3 transformer components, using inductor and beads to suppress high-frequency noise to ensure signal integrity.

Correlation analysis in generator failures
Protection action caused by communication interruption
Scenario: If the IONet port of IS215VCMIH2BC fails (such as a loose BNC connector), it may result in the loss of rotational speed signal.
Consequence: The Mark VI system misjudges it as an overspeed condition, triggers L12H alarm and executes shutdown to prevent equipment damage.
False alarm caused by abnormal data acquisition
Scenario: Module memory failure leads to incorrect generator bearing temperature data (such as constantly showing -40℃).
Consequence: The system generates BTGJ1_1_ALM alarm, which may cause unplanned shutdown, and the data accuracy needs to be verified by replacing the module.
System paralysis caused by hardware failure
Scenario: The TI DSP chip is damaged or the power monitoring circuit fails, and the module stops working completely.
Consequence: The communication of the I/O board in the rack is interrupted, Mark VI reports VCMI_FAIL alarm, and the module needs to be replaced immediately to restore control function.

FAQ

Q: Are you a trading company or a manufacturer?

A: Yes, a trading company. Who can provide you with one-stop automated procurement.

Q: Do you have any inventory? Or do you need to purchase from other suppliers?

A: We have our own warehouse.

Q: Is there an engineer who can provide technical support?

A: Of course, we do. Our technical team can help you choose PLC, HMI, servo motors and 

drivers, VFD, low-voltage products and software. If you need any assistance, you can directly 

contact our technical department.

Q: What is your delivery time?

A: If the goods are in stock, it usually takes 1-3 working days. If the quantity is large, it will take

5-7 working days.

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