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        • Lifecycle status

           Active / Available from OEM
          Apter Power delivers genuine Honeywell FC-IOTA-R24 assemblies, ensuring reliable 24V DC excitation power and precise signal paths to secure your industrial safety loop operations.

        FC-IOTA-R24

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        The FC-IOTA-R24 is a Honeywell RUSIO/RUSLS field termination assembly supporting digital I/O, analog I/O, and line-monitored ESD inputs, with 24V DC supply, 10A fuse, and -40 to +70°C operation.
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        Ships by Thursday, October 29
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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 FC-IOTA-R24

        • Manufacturer:
          Honeywell
        • Part Number:
          FC-IOTA-R24
        • Product Family:
          Honeywell Safety Systems
        • Product Type:
          Termination Assembly
        • Stock:
          1
        • Operating Temperature:
          -40 to +70°C
        • Storage Temperature:
          -40 to +85°C
        • Relative Humidity:
          10‑95% non‑condensing
        • Pollution Degree:
          2 or better
        • Approvals:
          CE; UL, TUV pending
        • Supply Voltage:
          24V DC -15%/+30% (20.4‑31.2V DC)
        • Supply Load (max.):
          10 A
        • Fuse:
          10A, 58V TAC ATO style blade (Littlefuse 142.6185.510_V)
        • V+ Pins (CN3, total):
          max. 1A; voltage drop <1.5V at 0.7A; max reverse voltage 36V
        • 24V Supply Connection:
          2 x M4 (to power rail)
        • Ground Connection:
          10 x M3.5 (to metal carrier)
        • I/O Connectors (CN1, CN2):
          Weidmuller BLZ 5.08/16/90F SN SW
        • Strip Length:
          7 mm
        • Weight:
          0.56 kg
        • Estimated shipping dimensions:
          44.2x12x6.5cm
        • Tariff Code:
          8547909000
        • Country of origin:
          USA
        • 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 Application Performance and Efficiency Application Scenarios

        Features:

        • Supports digital I/O (line/non‑line monitored), analog I/O (0/4‑20mA), and ESD input on channel 32; eliminates need for multiple termination assemblies.
        • Operates from -40°C to +70°C; stores -40°C to +85°C; 10‑95% non‑condensing humidity; pollution degree 2.
        • Allows two RUSIO‑3224 or RUSLS‑3224 modules to be connected in parallel for redundant control; hot‑swappable field wiring connections.
        The FC-IOTA-R24 is a universal field termination assembly that supports a wide variety of I/O types through the same set of connectors. It is designed to work with Honeywell RUSIO‑3224 and RUSLS‑3224 configurable I/O modules. The supported list includes digital inputs (both standard and line‑monitored), analog inputs (0‑20mA and 4‑20mA), digital outputs (0.5A, 1A, or 2A, with or without line monitoring), analog outputs (0‑20mA and 4‑20mA), and a dedicated line‑monitored ESD input on channel 32. Instead of stocking separate termination assemblies for analog inputs, digital outputs, and ESD inputs, engineers can use a single FC-IOTA-R24 for mixed I/O configurations.

        The FC-IOTA-R24 is engineered for harsh industrial environments where temperature extremes and humidity are common. Its operating temperature range of -40°C to +70°C allows installation in unheated outdoor cabinets (e.g., Arctic pipeline stations), refrigerated warehouses, or high‑temperature areas near furnaces and boilers. The storage temperature range is even wider: -40°C to +85°C, accommodating temporary exposure during transport or storage. Relative humidity tolerance is 10‑95% non‑condensing, suitable for tropical climates or process areas with steam or washdown. Pollution degree is rated 2 or better, meaning the assembly can be installed in control rooms and light industrial environments with minimal conductive dust.

        The FC-IOTA-R24 is designed to support redundant configurations for high‑availability safety systems. Two RUSIO‑3224 or RUSLS‑3224 modules can be connected in parallel on the same IOTA. Each module is individually capable of controlling all I/O points. In normal operation, one module acts as primary while the other stands by. If the primary module fails or is removed for maintenance, the secondary module automatically takes over control of the field I/O. This dual‑module redundancy is critical for Safety Instrumented Systems (SIS) where controller failure must not lead to loss of safety function. The FC-IOTA-R24 provides the physical termination that allows both modules to share the same field wiring without conflicts.

        The FC-IOTA-R24 Honeywell Termination Assembly may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL)by the manufacturer (OEM).

        Honeywell FC-IOTA-R24 Termination Assembly Manuals, Datasheets,Drivers,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.
        Honeywell FC-IOTA-R24 Termination Assembly Specs

        General

        • Manufacturer Honeywell
        • Model FC-IOTA-R24
        • Condition New Original ready stock
        • Product Family FC-IOTA-R24-N,FC-IOTA-DIO,FC-IOTA-AIO
        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.
        • Oil & Gas Extraction & Refining: Emergency Shutdown (ESD) systems for offshore platforms or refineries.
        • Chemicals & Petrochemicals: Monitoring reactor pressure, temperature, and chemical leaks, and implementing safety interlocking logic.
        • Energy & Power: Safety control of boiler management systems (BMS) and critical auxiliary equipment.
        • Universal I/O Configuration: Supports compatibility with the FC-RUSIO-3224 module, allowing a single channel to be configured as AI, AO, DI, or DO via software. This reduces the need for spare parts for different types of docking stations, improving design and maintenance efficiency.
        • Fully Redundant Architecture: Provides dual power inputs and redundant communication paths. Its performance feature is the ability to automatically switch faulty channels without affecting controlled processes, ensuring system SIL 3 continuity.
        • Hot-Swap Efficiency: Supports direct replacement of damaged I/O modules while the system is powered on, without interrupting production processes, minimizing Mean Time To Repair (MTTR).
        • High Integration of Field Equipment: When a control cabinet needs to simultaneously connect pressure sensors, solenoid valves, and switch signals, the FC-IOTA-R24 allows engineers to process these signals on a single base, significantly saving control cabinet space.
        • Remote I/O Deployment: Often deployed in remote cabinets close to field equipment, it communicates with the central Safety Manager controller via a secure communication protocol, reducing the cost of long-distance cable routing.
        • System Upgrades and Expansion: When adding safety control logic to an existing Experion PKS system, the FC-IOTA-R24 provides a modular expansion method, facilitating the rapid addition of safety monitoring points.
        Description
        The FC-IOTA-R24 is a field termination assembly (IOTA) designed for Honeywell RUSIO‑3224 and RUSLS‑3224 modules. It supports multiple I/O types: line‑monitored and non‑line‑monitored digital inputs, line‑monitored ESD inputs (on channel 32), analog inputs (0‑20mA or 4‑20mA), digital outputs (0.5A with/without line monitoring), multiple digital outputs (1A or 2A), and analog outputs (0‑20mA or 4‑20mA). 

        When using the FC-IOTA-R24, engineers can configure field wiring for safety and process I/O. The assembly operates from -40°C to +70°C and stores from -40°C to +85°C. Relative humidity tolerance is 10‑95% non‑condensing. Pollution degree is 2 or better.

        The FC-IOTA-R24 includes a 10A, 58V TAC ATO style blade fuse (Littlefuse order number 142.6185.510_V). Reverse polarity protection is provided via a parallel diode that blows the fuse. Four V+ pins (CN3) provide a total maximum current of 1A with a voltage drop of <1.5V at 0.7A. 

        For legacy Honeywell safety system expansions, the FC-IOTA-R24 provides a flexible termination solution. It connects via 24V supply terminals (2 x M4 to power rail), ground terminals (10 x M3.5 to metal carrier), an RJ‑45 Ethernet port, and Weidmuller screw terminals (CN1, CN2, CN3) accepting 0.50‑2.50 mm² wire with 7 mm strip length. 
        Alternative Names
        FC IOTA R24 FC-1OTA-R24 FC-I0TA-R24 FC-RUSIO-3224 FC-RUSLS-3224 FC-IOTA-NR24
        Technical notes
        The FC-IOTA-R24 is a passive termination assembly – it contains no active electronics. All I/O processing is performed by the RUSIO‑3224 or RUSLS‑3224 modules plugged into it. The IOTA provides screw terminals for field wiring and routes signals to the modules.The assembly includes an RJ‑45 Ethernet port for communication.
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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 I/O types does FC-IOTA-R24 support?
        The FC-IOTA-R24 supports digital inputs (line/non‑line monitored), analog inputs (0‑20mA, 4‑20mA), ESD inputs (channel 32), digital outputs (0.5/1/2A, with/without line monitoring), and analog outputs (0‑20mA, 4‑20mA). It works with RUSIO‑3224 or RUSLS‑3224 modules.
        What is the temperature rating of FC-IOTA-R24?
        The FC-IOTA-R24 operates from -40°C to +70°C and stores from -40°C to +85°C, making it suitable for outdoor cabinets, cold storage, or high‑temperature industrial environments. Humidity tolerance is 10‑95% non‑condensing.
        Does FC-IOTA-R24 have reverse polarity protection?
        Yes. The FC-IOTA-R24 uses a parallel diode that blows the 10A fuse if reverse polarity is applied. This protects downstream electronics. The fuse is a replaceable TAC ATO style blade fuse (Littlefuse 142.6185.510_V). Always replace with the correct rating.
        Can two modules control the same I/O on FC-IOTA-R24?
        Yes. The FC-IOTA-R24 allows two RUSIO‑3224 or RUSLS‑3224 modules to be connected in parallel. Each module is capable of controlling the I/O, enabling redundant configurations for safety‑critical applications. This improves system availability without duplicating field wiring.

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