GE IS200VCMIH2CAA / IS215VCMIH2CA is presented, subject to nameplate confirmation, as the H2 form of the VCMI VME Bus Master Controller used in a legacy Mark VI turbine control rack.
- VCMI function: Controller-to-I/O communication interface, IONet interface, VME bus master and rack/terminal-board ID manager
- H2 communications: Three 10Base2 Ethernet IONet ports with BNC connectors, 10 Mbit/s
- Additional interface: One RS-232C serial port, D-style plug connector, 9600 baud only
- Board format: 6U-high VME board, 0.787 inch wide
The VCMI interfaces the controller with VME I/O boards, serves as the VME bus master, connects the rack to IONet, and manages the identities of the boards in the rack and their associated terminal boards. It moves digital I/O data and control-network packets rather than directly measuring a field process variable. The board also receives rack power-status analog and digital feedback through J301 and monitors internal supply rails and PDM diagnostic signals. The H2 form has three IONet channels for R, S and T control paths in TMR Mark VI configurations and communicates with the main controller, local VME I/O boards and remote I/O racks containing their own VCMI boards. It belongs in legacy GE Mark VI gas- or steam-turbine control and protection installations, including power-generation and mechanical-drive applications, where deterministic communication between controller and local or remote I/O is required.
Important Notice: Use a clear physical nameplate/board photo showing the full code or codes. If only one full code is visible, publish only that code and list the other as unverified rather than as an equivalent.
Apter Power IS200VCMIH2CAA IS215VCMIH2CA Manuals and Guides
Important Notice: The first link is the product-parameters PDF prepared only from the cited manufacturer information; the second link is the Apter Power product manual. Confirm the physical nameplate, current manufacturer documents, and host-system requirements before installation or replacement.
TMR turbine-control rack communication
Provides three IONet paths for the R, S and T channels while exchanging I/O data over the VME backplane.
Local and remote I/O coordination
Links the controller to local I/O and to additional I/O racks on IONet, each remote rack using its own VCMI.
Rack identity management
Manages the IDs of rack boards and their associated terminal boards as part of the configured Mark VI topology.
Power-distribution diagnostics
Monitors internal supply rails and configured PDM/J301 status signals to support control-rack diagnostics.
Read and follow the current GE Vernova documentation and host-equipment instructions before work. Verify the complete physical nameplate and system configuration.
1
Verify the full physical nameplate and do not publish IS200VCMIH2CAA and IS215VCMIH2CA as a guaranteed pair without photographic evidence.
2
Confirm H2 hardware is required; H1 has one IONet port while H2 has three.
3
Match the board ID, firmware, configuration compatibility code, rack number and I/O topology before installation; GEH-6421M lists mismatch and offline alarms for these conditions.
4
Maintain correct 10Base2 IONet cabling and termination for every used R/S/T channel, and investigate rather than mask communication-loss alarms.
5
Treat the unit as legacy Mark VI hardware and use the site-specific GE documentation set and approved outage/replacement procedure.
Videos
News
Applications
