GE VMIVME5576 32-channel optical isolation digital output board (VME bus)

GE VMIVME5576 32-channel optical isolation digital output board (VME bus)

I. Basic Information
Brand: GE Fanuc (formerly VMIC, now Abaco Systems)
Model: VMIVME5576
Bus standard: VMEbus Rev.C.1, double-height Eurocard industrial card specification
Product positioning: 32-channel optically isolated digital output board card, dedicated DO control card for VME architecture control system, used to issue interlock, trip, equipment start-stop and other switch control instructions, often paired with VMIVME-1150 (DI acquisition card) for GE Mark V/VI turbine generator set turbine control system.

Core Hardware Parameters
1. Channel Configuration
Total 32 independent optically isolated digital outputs, divided into 4 groups × 8 channels registers, supporting 8/16-bit VME bus read/write
Output Type: Open collector, supports pull current / sink current two wiring modes
Output Current Options: 2.5mA (low current), 300mA (high-power drive)
External Power Supply Range: DC 5V～30V, requires external pull-up power supply to achieve electrical isolation
2. Electrical Isolation Performance
Single-channel optocoupler continuous withstand voltage: 1000V AC, pulse withstand voltage up to 6000V
Channel-to-channel isolation withstand voltage: 500V AC, completely eliminates ground loop interference and industrial strong power surge damage to VME main control backplane
3. Bus and Hardware Specifications
Built-in DIP switch: 14-bit VME base address setting, supports privileged / non-privileged I/O access
Supports 8-bit, 16-bit two VME data transmission modes
Power Supply: Backplane + 5V DC power supply
External Interface: Front and rear dual 64-pin DIN connectors, front output terminals for wiring
Operating Environment: 0℃～+55℃; Storage – 20℃～+85℃, without condensation conditions for systerra c…

Main Functional Features
32-channel batch switch quantity control output
Issue control signals for electromagnetic valves, trip relays, cooling fans, circuit breaker closing, sound and light alarms, local equipment start-stop control, which is the core output card of the unit safety interlock circuit.
Output Polarity Flexible Configuration
On-board jumpers can set positive logic / negative logic output, compatible with NPN, PNP external relay circuits, compatible with 24V DC control circuit standards of power plants.
Strong Electromagnetic Isolation Protection
Each independent optocoupler isolation, faults and short circuits on the site side will not reverse breakdown the VME main control CPU board, suitable for fire power, gas turbine strong interference cabinet environment.
Flexible Hardware Addressing
Dip code customizes board base address, multiple 2170A can be expanded in parallel in the same VME rack to achieve hundreds of DO centralized control.

Typical Application Scenarios
GE Mark V / Mark VI turbine generator set TSI, ETS trip protection system
Output protection instructions for unit tripping, high and low pressure bypass, excitation tripping, auxiliary machine interlock, etc.
Large compressors, gas turbines, power station excitation VME distributed control system.
Industrial embedded test platform, rail transit, military data acquisition control equipment.