GE IS200VCMIH2BEE VCMI VME‑Bus Master Communication Controller Board

Description

Hardware & Electrical Specifications

• Model：IS200VCMIH2BEE
• Part Number：IS200VCMIH2BEE
• Module Type：VCMI VME‑Bus Master Communication Controller Board
• Mounting：6U single‑slot VME rack backplane installation inside control cabinet
• Power supply：+5 VDC, ±12 VDC powered via VME backplane
• Communication interface：3‑channel IONet fiber‑optic Ethernet ports for TMR configuration; VME backplane bus interface for internal rack communication
• Communication rate：10 Mbps IONet fiber‑optic network
• Fault‑tolerance：SIFT software‑implemented fault tolerance voting logic for TMR system data comparison
• Interface：Front‑panel fiber‑optic connectors; VME backplane connector for intra‑rack processor communication
• PCB treatment：Conformal coated for dust‑moisture‑corrosion resistance
• On‑board protection：ESD protection, transient surge suppression, link‑status fault detection, communication channel error‑count monitoring circuit
• Compatibility note：Cannot run standalone; must match Mark VI VME‑based processor packs; full communication‑loop simulation test mandatory after replacement。

Environmental Specifications

• Operating temperature：0 ℃ ~ +70 ℃
• Storage temperature：‑40 ℃ ~ +85 ℃
• Relative humidity：5%‑95% non‑condensing
• Installation location：Indoor turbine control cabinet
• EMC compliance：IEC 61000‑6‑2
• Certifications：CE

Mechanical Data

• Weight：approx 0.75 kg
• Dimension：260 mm × 160 mm × 25 mm
• Handling note：ESD‑sensitive PCB; high‑speed fiber‑optic communication circuit, anti‑static wrist‑strap mandatory during handling

Main Functions

1. Act as UDH master communication controller, realize real‑time IONet fiber‑optic data exchange between main control rack and remote I/O racks, processor packs and field terminal boards.
2. Execute SIFT voting for TMR triple‑redundant system, complete data comparison, fault identification and faulty channel isolation.
3. Transmit control commands from main CPU to distributed I/O modules; upload field measurement and protection status data back to main controller via VME bus.
4. On‑board channel self‑diagnosis: detect fiber‑optic link break, communication frame error, VME‑bus abnormality; upload fault alarm to turbine main controller.
5. LED status indication:
   • Green LED：Board power supply normal
   • Yellow LED：IONet fiber‑optic link communication active
   • Red LED：Communication‑link fault / VME‑bus fault / module failure alarm

Installation & Wiring Requirements

1. Cut off rack power supply before replacement. Hot‑swap is forbidden. Strict anti‑static protection when handling PCB board.
2. Insert board into designated VME slot, secure panel locking screws; properly connect fiber‑optic cables, avoid excessive bending radius of optical fiber.
3. Fiber‑optic wiring strictly follow GE Speedtronic Mark VI wiring manual; keep optical fiber cables separated from high‑power interference cables.
4. Complete protective grounding according to GE Speedtronic system specification.
5. After replacement: verify VME rack power status, check each IONet link status, test data transmission between racks before commissioning.
6. Replacement note: For TMR triple‑redundant system application, hardware consistency of related VCMI boards shall be verified; full communication‑loop simulation test mandatory before unit put‑into‑service.