Description
Product Overview
The TRICONEX 3805H is designed to provide analog command outputs within a Triconex control architecture. In a process plant, a safety or control application may need to position a valve, adjust an actuator, or transmit a control reference to another device. The module converts the controller’s digital command into an analog current signal that the field device can use. Its eight-channel configuration supports multiple output loops from a single module, subject to the approved system design and wiring arrangement.
For maintenance and replacement planning, the important issue is not simply whether a card carries the same model number. Confirm the installed Tricon system generation, chassis and slot requirements, termination hardware, field wiring, and configuration before fitting a replacement. Published sources consistently describe the 3805H as an eight-output, 4–20 mA module, but some reseller pages disagree on accuracy, temperature limits, loop loading, and other details. Those values should be checked against the correct technical manual rather than copied from an unverified listing.
The 3805H has also been listed as discontinued by the manufacturer, so procurement may involve legacy stock or previously installed inventory. This makes traceability and condition assessment important: request clear photographs of the model and revision labels, storage history where available, and documented functional-test results. For a safety-related installation, verify the replacement through the plant’s approved change-management and proof-test process. A matching part number alone is not evidence that the module is suitable for a particular safety function.
Product Introduction
The TRICONEX 3805H provides analog output interfacing for control applications that require electrical commands to reach field equipment. Typical uses include valve positioning and actuator control, where the output signal must match the receiving device’s input requirements and the configured control strategy.
During replacement, verify the terminal assembly, channel assignments, loop power arrangement, and output behavior under fault conditions. Do not assume that another module in the 3805 series is a direct substitute without confirming the approved hardware configuration.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product model | 3805H |
| Manufacturer | Triconex |
| Product type | Analog output module |
| Application | Triconex process control / safety systems |
| Number of output channels | 8 |
| Output signal | 4–20 mA DC, as commonly listed |
| Resolution | 12-bit, as commonly listed |
| Overrange | Reported up to approximately 21.2 mA; verify against the applicable manual |
| Output accuracy | Not independently verified for the exact revision |
| Loop load limit | Confirm from the module manual and termination design |
| Working voltage | Not independently verified; distinguish module supply requirements from field-loop power |
| Operating temperature | Confirm the approved operating range for the exact revision |
| Installation method | Chassis-mounted plug-in module; confirm chassis compatibility |
| Protection rating | Not independently verified |
| Hot-swap support | Confirm in the system hardware manual and site procedure |
| Condition | Confirm actual condition with supplier |
Published listings agree on the module’s analog-output role, eight channels, and 12-bit resolution, but other specifications are inconsistent. Treat those details as procurement verification items, not guaranteed specifications.
3805H
Related Products
These models are related to Triconex I/O and safety-system applications. Their listing here does not establish direct interchangeability with the 3805H.
- 3805E — Related analog output model; verify revision and system compatibility.
- 3806E — Related Triconex module; confirm its function and configuration before considering it as an alternative.
- 3703E — Triconex module in the same broader product ecosystem; not confirmed as a replacement for 3805H.
- 3607E — Triconex module; check its I/O function and hardware requirements before selecting it.
- 3008 — Triconex processor module, a different functional category from the 3805H analog output module.
Frequently Asked Questions
Q1: What does the TRICONEX 3805H do?
It converts digital controller commands into analog output signals, commonly 4–20 mA, for field devices such as control valves and actuators.
Q2: How many output channels does the 3805H have?
Published listings identify eight analog output channels. Confirm the channel configuration and terminal assignments in the documentation for the installed system.
Q3: Is the 3805H suitable for a safety instrumented system?
It is marketed for Triconex safety-system applications. Suitability for a specific safety instrumented function depends on the approved system configuration, safety documentation, and installation requirements; the part number alone does not establish compliance.
Q4: Can the 3805H be replaced while the system is running?
Do not assume so. Check the applicable Triconex hardware manual, chassis configuration, and site maintenance procedure before removing or inserting the module. For safety-related equipment, follow the required bypass, authorization, and proof-test controls.
Q5: Is the 3805H interchangeable with the 3805E or 3806E?
Interchangeability has not been established here. Verify the exact part number, hardware revision, supported chassis, termination assembly, and application configuration before approving a substitute.
Q6: What should buyers verify before purchasing a replacement?
Request confirmation of the complete model and revision, actual condition, stock traceability, terminal-block compatibility, and functional-test scope. If the module is intended for a safety-related loop, confirm that the proposed replacement meets the plant’s approved hardware and configuration requirements.
Q7: Is the TRICONEX 3805H discontinued?
Some industrial parts listings report it as discontinued by the manufacturer. Confirm current lifecycle and support status through the responsible OEM channel, and assess any legacy-stock replacement against your site’s maintenance and safety requirements.
