TRICONEX DI2301 – High?integrity Digital Input Module for Tricon Safety Systems

The DI2301 fits cleanly into SIL?rated logic where discrete sensing is the backbone of risk reduction. Typical deployments include:

• Oil & Gas ESD systems (wellhead, process units, and pipeline block valves)

• Fire & Gas detection inputs (detectors, manual call points, extinguishing release permissives)

• Chemical process interlocks and relief system permissives

• Power generation BMS trips and auxiliaries

• Turbomachinery protection logic alongside overspeed and vibration systems

• Reliability under demand – Built for TMR environments where spurious trips are costly; diagnostics reduce guesswork during proof tests.

• Installed?base friendly – Works in existing Tricon frames and engineering workflows, so you typically avoid re?qualification of the whole loop.

• Lower lifecycle cost – Hot?swap capability and clear fault reporting cut maintenance time and, in many cases, spare parts exposure.

• Vendor ecosystem – Compatible with common barriers/isolators and marshalling practices used in hazardous?area designs.

One thing I appreciate is how predictable the diagnostics are. A maintenance lead at a Gulf Coast refinery told us they swapped a DI2301 mid?shift in under 10 minutes with zero process interruption—exactly the kind of event you want to be boring.

• Cabinet & environment – Mount in a Tricon chassis within a ventilated, clean cabinet; follow site standards for temperature, humidity, and EMC separation.

• Wiring – Use the specified RTB; maintain correct polarity for 24 VDC circuits; shield and ground per site EMC practice; segregate SIS wiring from non?SIS where practical.

• Hazardous areas – For field devices in classified zones, pair with certified barriers/isolators; the DI2301 itself is typically installed in a safe area cabinet.

• Online replacement – Observe Tricon procedures for removing/inserting modules under power; verify channel forcing and bypass states beforehand.

• Routine tasks – Periodic loop proof testing, terminal torque checks, cleaning of card edges/vents, and verifying firmware revisions against site baselines.

• IEC 61508 SIL 3 capable when applied within a certified Tricon system (TüV assessed)

• CE and UL/CSA conformity for applicable safety and EMC directives/standards

• Manufacturing quality aligned with ISO 9001 practices

• Manufacturer’s limited warranty typically 1 year; extended service options may be available

If you’re standardizing spares or planning a brownfield expansion, the TRICONEX DI2301 seems to be a safe bet: it keeps your SIS architecture consistent while giving technicians the diagnostics they expect. If you’d like, share your installed Tricon chassis part numbers and we can confirm slot compatibility and channel count before you commit.