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        TRICONEX,DI-2301-7400208C-020
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        DI-2301-7400208C-020

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        The Invensys Triconex DI-2301-7400208C-020 is a TMR-compatible digital input baseplate, designed to provide the physical and electrical interface between field devices and the safety controller.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for DI-2301-7400208C-020

        • Manufacturer:
          Invensys
        • Part Number:
          DI-2301-7400208C-020
        • Product Family:
          Triconex
        • Product Type:
          Digital Input Baseplate
        • Architecture:
          Triple Modular Redundant (TMR) compatible
        • Input Channels Supported:
          Up to 16 or 32
        • Input Voltage Range:
          12 VDC to 30 VDC (Nominal 24 VDC)
        • Input Current (per channel):
          Typical 5 mA – 10 mA
        • Fault Current (Short to Ground):
          130 mA typical / 200 mA maximum
        • Channel-to-Channel Isolation:
          500 VDC
        • Channel-to-Bus Isolation:
          2500 VAC (1 minute) / 1500 VDC
        • Operating Temperature:
          -40°C to +70°C
        • Storage Temperature:
          -55°C to +85°C
        • Relative Humidity:
          5% to 95% (non-condensing)
        • Power Supply:
          +5 VDC from Tricon backplane
        • Maximum Power Consumption:
          ≤3 W
        • Weight:
          1.2 kg
        • Estimated shipping dimensions:
          24.7x17.8x6.6cm
        • Tariff Code:
          8537101190
        • Country of origin:
          UAS
        • Place of shipment:
          Xiamen, Fujian, China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Specifications Operating Environment Safety & Compliance Applications

        Features:

        • Triple Modular Redundant (TMR) Architecture Support
        • Hot Swappability with Online Replacement Capability
        • Comprehensive On-Board Diagnostics with LED Status Indication
        The Invensys Triconex DI-2301-7400208C-020 is engineered to operate within a true TMR environment, where three isolated parallel control paths continuously process input data. The system employs a 2-out-of-3 (2oo3) voting mechanism that ensures process operation continues without interruption even if a single channel fails. This design philosophy eliminates any single point of failure and provides the highest level of fault tolerance available for safety-critical applications.

        The Invensys Triconex DI-2301-7400208C-020 supports true online module replacement, allowing maintenance personnel to replace faulty input modules without powering down the system or interrupting the controlled process. This hot-swap capability is critical for continuous process industries where unplanned downtime can result in significant production losses or safety risks. The mechanically keyed design prevents improper installation, ensuring correct module placement every time.

        The Invensys Triconex DI-2301-7400208C-020 features extensive channel-level diagnostic capabilities that continuously verify input signal integrity and detect faults such as open circuits, short circuits, and ground faults. Multi-color LED indicators provide at-a-glance status information for power, module health, and individual channel states. When a fault is detected, the diagnostic system immediately activates the system alarm and identifies the specific channel, dramatically reducing mean time to repair (MTTR).

        The DI-2301-7400208C-020 Invensys Triconex Digital Input Baseplate may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        Invensys Triconex DI-2301-7400208C-020 Digital Input Baseplate Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        Invensys Triconex DI-2301-7400208C-020 Digital Input Baseplate

        General

        • Manufacturer Invensys Triconex
        • Model DI-2301-7400208C-020
        • Condition New Original ready stock
        • Product Family 7400209-030 DO2401,7400210-010 AI2351,7400221-100 PI2381
        Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Wide Temperature Range:Runs from -40°C to +70°C (storage -55°C to +85°C). Works reliably in unheated arctic cabinets or hot desert control rooms without extra heating or cooling.
        • Humidity & Corrosion Protection:Rated 5–95% non-condensing humidity, with conformal coating and corrosion-resistant materials. Suitable for coastal salt spray, paper mills, and outdoor enclosures (IP20).
        • Vibration & Shock Resistance:Meets IEC 60068-2-6 (15g, 10-500Hz) and IEC 60068-2-27 (50g shock). Ideal for compressor skids, engine gensets, and offshore platforms with constant motion.
        • Electrical Noise Immunity:Provides 2500 VAC isolation (field vs. logic) and 500 VDC channel-to-channel isolation. Built-in EMI/RFI filtering keeps signals clean near VFDs, contactors, and radios.
        • IEC 61508 SIL 3 Certified:TÜV Rheinland-certified to SIL 3 — the highest level for industrial safety. Achieves PFD < 10⁻³~10⁻⁴ and HFT = 1 (safe even with one hardware fault).
        • IEC 61511 for Process Safety:Complies with IEC 61511 for process industry SIS. Ready for ESD, HIPPS, and BMS applications that require systematic capability and architectural constraints.
        • Global Certifications:Carries CE, CSA, and UL 61010-1 for EU, Canada, and US markets. Can be installed inside explosion-proof enclosures for ATEX/IECEx zones.
        • 2oo3 Voting Architecture:Uses 2-out-of-3 majority voting to eliminate any single point of failure. Physically and electrically isolated channels prevent common-cause failures — delivering high availability for critical safety loops.
        • Emergency Shutdown Systems (ESD):Connects emergency stops, high-pressure/temperature switches, and valve limit sensors directly to the Tricon controller. When a critical condition occurs, it delivers the signal fast so the system can shut down safely — protecting people, equipment, and production.
        • Fire & Gas Detection (F&G):Works with gas, flame, and smoke detectors to trigger alarms, close dampers, and cut off fuel. The TMR design means one faulty channel won't block a real emergency response — a key requirement for high-risk facilities.
        • Turbine & Compressor Control:Monitors overspeed, vibration, bearing temperature, and lube oil pressure. With response as fast as 1ms, it helps avoid catastrophic rotating equipment failures and unplanned downtime.
        • Burner Management Systems (BMS):Handles flame scanner signals, purge verification, fuel pressure, and valve position feedback. SIL 3 certification supports compliance with NFPA 85/86 for safe burner startup and emergency fuel shutoff.
        Description
        The Invensys Triconex DI-2301-7400208C-020 is specifically designed as a termination baseplate for digital input modules within the Triconex TMR (Triple Modular Redundant) control system architecture. It enables the 2-out-of-3 (2oo3) voting mechanism that ensures no single point of failure can compromise system operation. This baseplate provides the physical mounting and electrical interconnection for digital input modules, allowing them to monitor discrete signals from field devices such as limit switches, emergency push buttons, pressure switches, and safety interlocks.

        Built for high-availability applications, the Invensys Triconex DI-2301-7400208C-020 supports online module replacement (hot swapping) without interrupting the controlled process. When a fault is detected on any channel, the system's extensive diagnostic capabilities immediately identify the issue while the remaining redundant channels continue normal operation. This design philosophy, proven across thousands of installations worldwide, delivers the high integrity required for Safety Integrity Level (SIL) 3 certified applications.

        The Invensys Triconex DI-2301-7400208C-020 is manufactured in the USA and engineered to withstand extreme industrial conditions, operating reliably across a temperature range of -40°C to +70°C. Its rugged construction includes galvanic isolation between field circuits and system electronics, providing superior noise immunity and electrical protection in harsh environments such as oil & gas platforms, chemical processing plants, and power generation facilities.

        With the Triconex platform deployed in over 70 countries, the Invensys Triconex DI-2301-7400208C-020 has become an industry standard for safety-critical digital input termination. Whether used in new system installations or as a replacement part for legacy Triconex systems, this baseplate continues to provide the proven reliability that process safety engineers rely upon for emergency shutdown (ESD) and fire & gas (F&G) detection systems.

        Alternative Names
        DI23017400208C020 DI-2301-74OO2O8C-O2O 7400208C-020 DO2401 HS2 7400219-040 7400209-030 DO2401 7400210-010 AI2351 7400221-100 PI2381 7400121-380
        Technical notes
        Invensys Triconex DI-2301-7400208C-020 operates on the principle of TMR fault tolerance, utilizing three isolated parallel control paths with 2oo3 voting to eliminate single points of failure. The baseplate supports both dry contact and voltage input configurations, features complete channel-level diagnostics, and is fully compatible with Tricon controller chassis and TriStation 1131 programming software.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        What certifications does the Invensys Triconex DI-2301-7400208C-020 hold?
        The Invensys Triconex DI-2301-7400208C-020 is certified to IEC 61508 SIL 3 (Safety Integrity Level 3), the highest rating for industrial safety equipment. It also holds TÜV Rheinland, CE, CSA, and UL 61010-1 certifications. These certifications confirm that the baseplate meets international standards for functional safety, electromagnetic compatibility, and electrical safety, making it suitable for use in regulated industries worldwide.
        What types of input signals can the Invensys Triconex DI-2301-7400208C-020 handle?
        The Invensys Triconex DI-2301-7400208C-020 supports both dry contact (voltage-free) and wet contact (voltage input) configurations. For dry contacts, the baseplate provides the necessary wetting current. For wet contacts, it accepts a wide input voltage range of 12-30 VDC (nominal 24 VDC). This flexibility allows the baseplate to interface with virtually any standard industrial discrete sensor or switch commonly found in process safety applications.
        How does the Invensys Triconex DI-2301-7400208C-020 ensure signal integrity?
        The Invensys Triconex DI-2301-7400208C-020 provides multiple layers of signal protection including: (1) galvanic isolation of 2500 VAC between field circuits and backplane electronics, (2) 500 VDC channel-to-channel isolation to prevent crosstalk, (3) EMI/RFI shielding for noise immunity, and (4) built-in transient voltage protection. These features ensure accurate signal acquisition even in electrically noisy industrial environments near variable frequency drives, motors, and high-power switching equipment.
        Is the Invensys Triconex DI-2301-7400208C-020 compatible with newer Triconex systems?
        Yes, the Invensys Triconex DI-2301-7400208C-020 maintains backward compatibility with legacy Triconex installations while also integrating with current Tricon controller platforms. It works with DI3301 and DI3401 digital input modules and is fully supported by TriStation 1131 programming software. This cross-generation compatibility makes it an excellent choice for both new system builds and as a replacement part for existing safety systems.

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