Model Interpretation

3806E: 8‑Ch Enhanced Analog Output, TMR, High‑Density

P/N: 3000589‑xxx series

Family: 3806 (base), 3806E (enhanced diagnostics/accuracy)

Compatibility: Tricon 8110/8111/8112 chassis; drop‑in replacement for 3805E in standard loops

Technical Parameters

Electrical

Channels: 8 isolated analog outputs (common return, DC‑coupled)

Output Ranges: 4–20mA (default, +6% overrange to 22mA); 0–20mA; 0–5V; 0–10V (per‑channel configurable)

Resolution: 12‑bit

Accuracy: <0.25% FSR (4–20mA, 0–60°C); typical ±0.1% FSR

Response Time: ≤2ms (full‑scale step)

Loop Power: 24VDC nominal (max 42.5VDC, reverse‑voltage protected)

Isolation: 2500Vrms channel‑to‑backplane

Redundancy: TMR 2oo3 voting (three independent legs)

Mechanical

Dimensions (W×H×D): 483 × 25.4 × 453 mm (19” rack, 1 slot)

Weight: ~4 kg

Mounting: Plug‑in backplane, hot‑swappable

Environmental

Operating Temp: 0°C to +60°C (derated to 55°C at full load)

Storage Temp: −40°C to +85°C

Humidity: 5%–95% RH, non‑condensing

Certifications: SIL3 (IEC 61508), TÜV, UL, ATEX/IECEx

Diagnostics & Indicators

LEDs: PASS, FAULT, ALARM (module + per channel)

Monitoring: Loop current/voltage feedback; open/short‑circuit detection; overrange/underrange alarms

Protection: Overvoltage, overcurrent, short‑circuit, overtemperature

Fail‑Safe: Configurable hold‑last‑value or preset safe‑value on fault

Core Functions

TMR SIL3 Safety: Triple‑modular redundancy with 2oo3 voting ensures no single‑point failure; meets SIL3 for safety loops.

High‑Density Analog Control: 8 channels per slot (same as 3805E) with standard accuracy, ideal for high I/O count systems.

Cost‑Effective Performance: Balances precision and cost for non‑inductive, general‑purpose loads (vs. 3805H’s high‑inductive focus).

Hot‑Swap & Redundancy: Online replacement without shutdown; compatible with redundant I/O architectures.

Loop Diagnostics: Real‑time feedback monitoring validates output integrity, reducing unplanned downtime.

Applications

Oil & Gas: ESD valve control, pipeline pressure regulation, burner management (non‑inductive valves).

Power Generation: Boiler feedwater valve modulation, BMS fuel valve control, turbine auxiliary actuators.

Chemical/Refining: Distillation column valve positioning, reactor auxiliary control loops.

Industrial Automation: High‑channel‑count SIL3 loops, general‑purpose analog output, cost‑sensitive safety systems.