Product Short Description
Product Brief Introduction
T8451 executes safety logic discrete output commands from the T8110B CPU to field actuators including shutdown solenoid valves, alarm beacons, emergency trip relays. Dual independent triple-redundant output channels with series voting contact logic ensure single channel failure cannot prevent safety trip actuation, fully compliant with SIL3 emergency shutdown functional safety requirements.
Description
Core Technical Specifications
- Output Channel Count: 2 triple-redundant digital safety output channels per module
- Field Output Voltage Rating: 24 VDC sinking/sourcing driver circuit
- Single Channel Maximum Load Current: 0.5 A per redundant output slice
- Output Fault Detection: Load open-circuit and short-circuit diagnostic monitoring per channel
- Voting Architecture: Series triple redundant driver slices; all three slices must command ON for output energization
Core Functional Features
- Triple series redundant output drivers; single slice failure forces safe de-energized trip state
- Real-time output load health diagnostics transmitted to CPU fault log
- User-configurable pulse timing output mode for valve pulse actuation safety interlocks
- Hot-swap maintenance without disabling adjacent safety output channel function
Application Scenarios
Emergency shutdown solenoid valve drive, fire suppression system valve actuation, plant wide safety alarm horn/strobe control, fuel supply trip valve discrete safety outputs
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