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Product Introduction
The Honeywell FC-IOTA-NR24 is a Redundant I/O Termination Assembly designed for use in Experion PKS C300 and Safety Manager systems. This component serves as a physical and electrical interface between the field wiring and the I/O modules, ensuring robust signal integrity and system continuity in critical industrial environments.
As part of Honeywell’s Fault Tolerant Ethernet (FTE) architecture, this IOTA unit supports redundancy at the I/O level. It plays a crucial role in maintaining system availability and performance, particularly in safety-critical applications such as emergency shutdown systems (ESD), burner management systems (BMS), and process automation with strict uptime requirements.
Designed with channel-to-channel and channel-to-system isolation, FC-IOTA-NR24 delivers high signal reliability, minimal downtime, and optimal fault detection capabilities. The unit is engineered for compatibility with a wide range of I/O types and is suitable for mounting within standard I/O cabinets.
Product Specifications
| Parameter | Specification |
|---|---|
| Model Number | FC-IOTA-NR24 |
| Product Type | Redundant I/O Termination Assembly |
| Supported Channels | 24 channels |
| Supported I/O Types | Analog Input, Analog Output, Digital Input, Digital Output |
| Redundancy Type | Channel-level I/O redundancy |
| Compatibility | Experion PKS, Safety Manager, C300, FTE Architecture |
| Signal Isolation | Galvanic isolation per channel |
| Field Wiring Connection | Screw terminals or clamp connectors |
| Internal Bus Interface | Redundant Fieldbus connection to IOMs (I/O Modules) |
| Power Supply | 24 VDC nominal (supplied via backplane) |
| Power Consumption | Approx. 5 W |
| Hot Swappable | Yes (when installed in appropriate system configuration) |
| LED Indicators | Module status, channel status, fault indication |
| Operating Temperature Range | 0°C to 60°C |
| Storage Temperature Range | -40°C to 70°C |
| Humidity | 5% to 95% RH, non-condensing |
| Certifications | CE, ATEX, IECEx, SIL2/3 (with Safety Manager), UL |
| Dimensions (H × W × D) | 64 x 120.7 x 293.4 mm |
| Weight | 0.46 kg |
Product Applications
The Honeywell FC-IOTA-NR24 is tailored for high-availability process automation and safety instrumented applications that demand redundancy and uninterrupted performance. Key application areas include:
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Emergency Shutdown Systems (ESD)
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Burner Management Systems (BMS)
-
Distributed Control Systems (DCS) in critical industries
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Oil & Gas Production and Refining
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Petrochemical and Chemical Processing
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Power Generation
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Pharmaceutical Batch Control
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High-integrity Pressure Protection Systems (HIPPS)
Product Advantages
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Built-in Channel-Level Redundancy
Provides true dual-channel architecture, ensuring uninterrupted I/O signal availability even in the event of hardware failure. -
Supports Multiple I/O Types
Compatible with both analog and digital I/O modules, enabling flexible configuration across different control and safety systems. -
Enhanced Signal Integrity
Galvanic isolation and noise filtering ensure reliable field signal acquisition and minimize common-mode noise and ground loops. -
Hot-Swappable Design
Enables replacement or maintenance without shutting down the system, reducing operational downtime. -
Diagnostic Capability
Real-time LED indicators and system feedback provide continuous health monitoring of each channel and module. -
Integrated with Experion PKS and Safety Manager
Ensures seamless communication and configuration through Honeywell’s unified automation platform. -
Compliance with Global Standards
Certified for hazardous area operations and compatible with SIL2/3 applications when used in the correct configuration.
FAQ
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Is the FC-IOTA-NR24 compatible with both analog and digital I/O modules?
Yes, it supports analog input/output as well as digital input/output when paired with the appropriate IOM. -
Does the FC-IOTA-NR24 provide isolation for each I/O channel?
Yes, the module provides galvanic isolation between channels and from the system bus, enhancing reliability. -
Can the IOTA be hot-swapped during system operation?
Yes, hot swapping is supported when redundancy and system architecture are properly configured. -
How does the IOTA handle redundancy?
It offers full channel-level redundancy, ensuring continuous operation even if one channel path fails. -
Is it necessary to configure the IOTA module separately in the Experion system?
The module is auto-detected but should be properly assigned and mapped within the Control Builder configuration. -
Can the FC-IOTA-NR24 be used in SIL-rated safety applications?
Yes, when used with certified Safety Manager components and configurations, it supports SIL2/3 compliance. -
How is signal integrity maintained in high-noise environments?
Through galvanic isolation, filtering, and grounding practices supported by the IOTA’s internal design. -
Is there any diagnostic feedback available at the hardware level?
Yes, LEDs on the front panel indicate operational status, errors, and redundancy health. -
Does this unit support redundant field wiring?
Yes, redundant wiring paths can be established based on channel configuration. -
Is it possible to mix different I/O signal types on the same IOTA?
The IOTA itself is designed per signal type group; mixing analog and digital typically requires different IOTAs or IOMs.
Related Models from the Same Series or Family
| Model Number | Description | I/O Type | Channels | Redundancy Support |
|---|---|---|---|---|
| FC-IOTA-R24 | Standard I/O Termination Assembly | Mixed | 24 | No |
| FC-IOTA-NR16 | Redundant I/O Termination Assembly | Mixed | 16 | Yes |
| FC-PUIO01 | Universal I/O Module | Configurable | 16 | Supported via IOTA |
| FC-TSDI01 | Digital Input Module (24 VDC) | Digital Input | 16 | Yes (with IOTA) |
| FC-TSAO01 | Analog Output Module (4–20 mA) | Analog Output | 8 | Yes (with IOTA) |
| FC-TSAI01 | Analog Input Module (4–20 mA, HART) | Analog Input | 8 | Yes (with IOTA) |
Popular Honeywell Models (Same Brand)
| Model Number | Description | Application | Key Feature |
|---|---|---|---|
| C300 Controller | Process Automation Controller | DCS Control | High-speed, fault-tolerant |
| Safety Manager SC | Safety Instrumented System Controller | SIS | SIL3 certified, dual redundant |
| FC-SDO-0824 | Digital Output Module (24 VDC, 8 Channel) | BMS, ESD | Isolated outputs |
| FC-AI-1624 | Analog Input Module (16 Channel, 4–20 mA) | Process Monitoring | High-density AI |
| FTE Switch | Redundant Network Switch for FTE | Network Redundancy | Fault Tolerant Ethernet backbone |
| HC900 Controller | Hybrid Controller | Process/Batch Control | Built-in control + logic engine |
