Description
The Triconex 4119A (Model 4119A) is a high-integrity Supervised Output Module manufactured by Schneider Electric (Triconex) for the Tricon Triple Modular Redundant (TMR) Safety Instrumented System (SIS).
Designed for critical safety applications—such as Emergency Shutdown (ESD), Fire & Gas (F&G), and Burner Management Systems (BMS)—up to SIL 3 (IEC 61508 / IEC 61511), the 4119A module provides controlled, supervised output channels with continuous loop testing and field wire monitoring to drive final control elements (solenoid valves, relays, or alarm devices) with maximum fault tolerance.
Technical Specifications
| Parameter | Specification |
| Manufacturer | Schneider Electric / Triconex (Invensys) |
| System Platform | Tricon TMR Safety Instrumented System (v9 / v10 / v11) |
| Model / Part Number | 4119A (Model 4119 / 4119A) |
| Module Type | Supervised Output Module (TMR Architecture) |
| Safety Integrity Level | Certified up to SIL 3 (IEC 61508 / IEC 61511 compliance) |
| Redundancy Architecture | Triple Modular Redundant (2-out-of-3 voting across Leg A, Leg B, Leg C) |
| Field Line Monitoring | Integrated open-circuit / short-circuit detection |
| Operating Temperature | 0°C to +60°C (32°F to 140°F) |
| Operating Humidity | 5% to 95% non-condensing |
| Mounting / Chassis | Plugs into Tricon Main or Expansion Chassis (e.g., 2071H, 8110 chassis) |
Core Features & Operating Capabilities
- Triplicated TMR Architecture: Contains three independent channel legs (Leg A, Leg B, Leg C) that perform 2-out-of-3 (2o3) voting on all output commands to eliminate single points of failure.
- Supervised Line Diagnostic Testing: Continuously executes automatic loop diagnostic pulses to check field load wiring for open-circuit and short-circuit conditions without toggling the final actuator state.
- Online Hot-Swappable Maintenance: Supports live insertion and removal into a paired chassis slot (SmartSlot configuration), allowing a replacement module to be installed while the system remains in full safety operation.
- Fail-Safe Output Design: Built with hardware fail-safe logic ensuring that outputs de-energize (or take designated safety states) upon total loss of system power or unrecoverable triple fault conditions.
- Front-Panel Diagnostic LEDs: Provides instant visual status via PASS, FAULT, ACTIVE, and individual channel fault LEDs for rapid maintenance isolation.
Related Triconex Hardware Components
- 3008 / 3009 — Tricon TMR Main Processor Modules.
- 2071H (7400313-100) — Tricon High-Density Chassis Assembly.
- 3721 / 3700A — Tricon 115V AC/DC Analog / Digital Input Modules.
- 9110 / 9753-110 — Tricon External Termination Panels (ETP) and Field Cabling.
