Model Interpretation

3805H: Enhanced Analog Output, High Inductive Load, TMR

3805HTMR: Commonly known in the market, emphasizing TMR triple redundancy

P/N: 3000588-xxx series

Compatibility: Tricon 8110/8111/8112 chassis, fully compatible with 3805E applications Technical Parameters

Electrical

Channel: 8-channel isolated analog output

Output range: 4–20mA (default, can be up to 22mA); 0–20mA; 0–5V; 0–10V (each channel can be set)

Resolution: 12 bit

Accuracy: <0.25% FSR (0–60℃), typical ±0.1% FSR

Drive capability: Enhanced for inductive load driving (stronger than 3805E)

Loop power supply: 24VDC (maximum 42.5VDC, reverse voltage protection)

Isolation: 2500Vrms (channel to backplane)

TMR: Three-channel independent, 2oo3 voting Mechanical

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

Weight: Approximately 3.65 kg

Installation: Backplane hot-swappable, supports online replacement Environmental

Operating temperature: 0℃ ~ +60℃

Storage temperature: −40℃ ~ +85℃

Humidity: 5%–95% RH, no condensation

Certifications: SIL3 (IEC61508), TÜV, UL, ATEX/IECEx Diagnostics

LED: PASS / FAULT / ALARM (module + per channel)

Loop monitoring: Current loop self-check, load open/closed circuit detection

Protection: Overvoltage, overcurrent, short circuit, overtemperature

Self-calibration: Channel-level drift compensation Core Functions

TMR Triple Redundancy Fault Tolerance

Three independent DA + voting, any channel failure does not affect the output, meeting SIL3 safety circuits requirements.

Enhanced Inductive Load Drive

Compared with 3805E, it has stronger drive capability and better surge suppression, suitable for solenoid valves, servos, electric valves, etc.

Full Loop Diagnosis + Loop Self-Check

Each channel has an independent current loop to verify the authenticity of the output; open circuit / short circuit of the load will trigger an alarm promptly.

Hot Swap and Redundancy Architecture Compatibility

Online replacement without downtime; can be combined with redundant I/O architecture. Applications

Oil and Gas: ESD/F&GS valve control, compressor anti-surge protection, electromagnetic valve group drive

Power: Turbine actuators, boiler feedwater valves, excitation control

Chemical: Reactor temperature/pressure valves, distillation tower control, high inductive load actuators

Safety-critical: SIL3 loop, highly reliable analog output, frequently operated valve control