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The user is asking about the Triconex 3636T. The search results clarify a key contradiction in the user’s prompt: while the module is indeed non-triplicated, the ‘T’ in its model number does not signify TMR (Triple Modular Redundancy) in the traditional sense. Instead, it indicates that the module receives and “votes” on signals from the three main processors of the TMR system, then drives a single, non-triplicated relay based on the voted data. This is a unique and important aspect of its design.
The key details are:
- Model: 3636T
- Function: Relay Output
- Architecture: Non-triplicated, with voting on input signals
- Points: 32, non-commoned
- Key Feature: High-density, dry-contact relays, with diagnostics and voting on the input signals from the TMR system’s main processors.
I have all the necessary information to construct a detailed response that correctly addresses the “non-triplicated” and “T” aspects, highlighting its unique architecture, features, and applications.
Triconex 3636T Relay Output Module
Brief Product Description
The Triconex 3636T is a high-density, non-triplicated Relay Output module designed for use in Triconex safety instrumented systems (SIS). It provides 32 independent dry-contact relay output points capable of controlling a wide range of AC or DC field devices. Although the output relays are non-triplicated, the module itself is an integral part of the TMR (Triple Modular Redundancy) system. It receives output signals from the three Main Processors, votes on them, and then drives the 32 individual relays based on the voted data.
- Product Type: Relay Output Module
- Voltage: Can handle a wide range of AC/DC voltages, up to 125 VAC/VDC max.
- Configuration: Simplex (non-triplicated) relay outputs with TMR input voting
- Points: 32, non-commoned
- Key Feature: High-density, dry-contact outputs with diagnostics for non-critical points.
A Closer Look at the Triconex 3636T
The Triconex 3636T is a unique module that blends TMR principles with a simplex output design. While the relays themselves are not triplicated, the module’s internal logic is designed to work within a fault-tolerant system. The module receives signals from the three redundant Main Processors and uses a voting mechanism to ensure that only a single, confirmed command is executed. This prevents a single processor fault from causing a spurious activation or deactivation of the output.
This design makes the 3636T ideal for specific applications where the output devices themselves are either non-critical or provide their own form of redundancy.
Key features of this module include:
- 32 Independent Relay Outputs: The high point density allows a single module to control numerous devices, saving cabinet space and simplifying wiring.
- Dry-Contact Relays: The Form A (SPST) dry-contact relays are versatile and can be used to switch various AC or DC loads.
- Advanced Diagnostics: Each output point includes a loopback circuit that verifies the operation of the relay switch independently of the presence of a load. The module’s ongoing diagnostics continuously test its operational status, and a failure of any diagnostic activates a chassis alarm.
- Hot-Swappable: The module supports hot-swapping, allowing for a faulty module to be replaced online without shutting down the entire system, which is invaluable for continuous processes.
- Fuses: Each output has a dedicated 2.5A fast-acting fuse for protection.
Technical Specifications
Application Areas
The Triconex 3636T is used in a variety of industries that require a flexible, high-density relay output solution, often for signals that are not directly related to a critical safety action.
- Non-Critical Outputs in SIS: For activating non-critical alarms, annunciator panels, or indicator lights that don’t directly control a process shutdown.
- Interfacing with Legacy Systems: Used to interface with older systems or devices that are not compatible with solid-state outputs.
- Redundancy in the Field: Used in safety-critical applications where the redundancy is provided by the field devices themselves (e.g., dual-coil solenoids), allowing a single 3636T output to control one path of a redundant pair.
- High-Density Control: Due to its 32-point capacity, it is an efficient choice for applications requiring a large number of independent relay outputs.
