Description
ICS Triplex T3464
Technical Specifications & Performance Parameters:
- Power Supply: 20 V DC ~ 32 V DC backplane power feeding, nominal 24 V DC
- Channel Count: 32 digital input channels
- Input Signal Level: 24 V DC discrete input
- Per‑Channel Input Current: 3‑7 mA
- Channel Response Time: ≤8 ms
- SOE Event Time Resolution: 1 ms
- Operating Temperature: ‑40 °C ~ +70 °C
- Storage Temperature: ‑40 °C ~ +85 °C
- Safety Certification: TÜV IEC 61508 SIL 3
- Maximum Power Consumption: 13 W
- Weight: 0.96 kg
- Form Factor: Standard Regent‑Plus rack plug‑in module
Functional Features:
- Triple‑redundant sampling circuit for each input channel, implement 2‑out‑of‑3 hardware status voting
- Channel‑level circuit diagnostic capability, detect abnormal input circuit status
- Hot‑swap support for online module replacement
- High‑speed SOE event capture for field digital‑signal state transition
- Front‑panel LED indicators show individual channel input status, module running status and fault alarm
- Timestamped fault event upload to system fault historian
- Galvanic isolation between field input circuit and internal safety backplane bus
- Built‑in input surge suppression circuit against field transient voltage disturbance
Working Principle: Field 24 V DC switch signal accesses module input terminals. Three independent sampling sub‑circuits read identical field signal status synchronously. Hardware voting circuit outputs final validated digital state. Signal state converts into digital data and transmits to Regent‑Plus processor via rack backplane bus. High‑precision timing unit records exact moment of signal state change for SOE logging. Single sampling sub‑circuit failure gets isolated automatically and does not distort final channel output status.
Material Composition & Structural Characteristics:
- Housing: Aluminum alloy anti‑interference shell with anti‑corrosion treatment
- Circuit substrate: Multi‑layer FR‑4 printed circuit board, integrate optocoupler isolation components
- Backplane connector: Gold‑plated high‑density anti‑vibration industrial connector
- Front panel: Flame‑retardant PC plastic with LED indicator window, IP20 protection grade
- Card‑type plug‑in rack‑slot structure
Installation Requirements:
- Install module into digital‑input slot of Regent‑Plus main rack or expander rack, tighten front‑panel fixing screws
- Field digital‑input cables use shielded twisted‑pair cables, separate routing from high‑voltage power wiring
- Cable shielding layer single‑end grounded at cabinet ground bus‑bar
- Cabinet protective ground resistance ≤4 Ω
- Maintain good ventilation heat‑dissipation inside control cabinet
- Field input signal voltage shall not exceed 32 V DC maximum limit
Application Scenarios:
- Emergency‑stop and limit‑switch signal acquisition for petrochemical ESD systems
- Fire detector and gas detector switch‑signal input for fire‑gas safety systems
- Chemical plant reactor safety interlock switch‑signal collection
- Power‑plant safety instrumented system equipment status signal input
- Off‑shore oil‑gas platform field safety switch signal acquisition
Usage Notes:
- Hot‑swap operation only allowed under normal system health status
- Module shell disassembly is forbidden
- Prevent field‑side surge over‑voltage from entering input channel terminals
- After module replacement, verify channel signal acquisition performance and SOE timestamp accuracy
- Operate strictly within rated operating temperature range
- Periodically check field switch‑contact condition and cable insulation performance
