Model Interpretation

3564: 64‑Point TMR Digital Input Module, 24VDC, commoned, high‑density

P/N: 3564 (base model, TMR is integral)

Compatibility: Tricon v9–v12 chassis (8110/8111/8112/8115/8116); hot‑swappable

Key Feature: 64 channels (commoned, non‑isolated channel‑to‑channel), 24VDC only, 1,500VDC field‑to‑backplane isolation

Technical Parameters

Electrical & Input

Input Type: Dry/wet contact, DC‑coupled (24VDC nominal)

Voltage Range: 15–30VDC (max 36VDC)

Channels: 64, commoned (no channel‑to‑channel isolation)

Input Current: 2–3mA (on‑state)

Hysteresis: 4VDC (typical)

Response Time: <2ms (on/off)

Backplane Power: 24VDC, ~160mA

Isolation: 1,500VDC field‑to‑backplane galvanic isolation

Redundancy & Safety

Architecture: Triple Modular Redundancy (TMR), 2oo3 voting

Safety Certification: IEC 61508 SIL3, TÜV, UL, CE, ATEX, FM

Diagnostics: >99.9% fault coverage; open/short detection; SOE (≤40ms resolution)

MTBF: >145,000 hours

Mechanical

Form Factor: 3U, 19” rack, 1 slot

Dimensions (W×H×D): 114 × 30 × 185 mm

Weight: ~2.1 kg (4.6 lbs)

Mounting: Plug‑in backplane, hot‑swappable

Color Code: Dark Red

Environmental

Operating Temp: −40°C to +70°C

Storage Temp: −40°C to +85°C

Humidity: 5%–95% RH, non‑condensing

Diagnostics & Indicators

LEDs: PASS, FAULT, ACTIVE, TMR, ALARM

Fault Detection: Open/short circuit, TMR deviation, stuck‑state

Core Functions

64‑Point High‑Density 24VDC Safety Input

Accepts 15–30VDC signals (ESD pushbuttons, limit switches, proximity sensors); 64 commoned channels minimize slot usage for large safety systems, reducing cost per point.

TMR Fault‑Tolerant Voting

Three independent input circuits per signal; 2oo3 voting eliminates single‑point failures—critical for SIL3 ESD/F&G/BMS loops.

High Noise Immunity & Isolation

1,500VDC field‑to‑backplane isolation rejects ground loops and electrical noise; ideal for harsh industrial environments.

Hot‑Swap & Online Maintenance

Replace module without system shutdown; supports online diagnostics and SOE logging for regulatory compliance.

Cost‑Effective Large‑Scale I/O

Optimized for high‑count 24V safety signal arrays; commoned design simplifies wiring and reduces system complexity.

Applications

Oil & Gas: Large‑scale ESD/F&G systems; high‑count 24V safety switches and detectors

Chemical/Refining: Complex process interlocks; dense discrete safety signal arrays

Power Generation: Turbine ESD; boiler BMS with numerous 24V safety interlocks

SIS Retrofits: Maximize I/O capacity in existing Tricon chassis; reduce slot count for large loops