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Product Overview
The Honeywell FC-IOTA-R24 51306505-175 is a high-reliability Redundant I/O Termination Assembly (IOTA) designed to support dual-redundant I/O modules in Honeywell’s Fail Safe Controller (FSC) and Safety Manager platforms. It serves as a key interface point for I/O signal wiring, enabling easy termination, distribution, and isolation of signals between field devices and control systems.
This IOTA is designed specifically for high-availability systems, offering dual paths for power and signal redundancy. With its 24-channel configuration, it supports high-density installation while maintaining robust connectivity and diagnostics. Its modular layout and integrated backplane support simplify system integration and expansion in critical process safety applications.
Key Features
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24-channel Redundant Termination Assembly for high-density wiring
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Supports Redundant I/O Modules for fault-tolerant systems
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DIN Rail Mounting with quick-connect options
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Hot-swappable Compatible with Honeywell I/O modules
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Simplified Field Termination with labeled screw terminals or connectors
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Integrated Signal Isolation and short-circuit protection
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Diagnostics Interface for channel-level status and fault identification
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Rugged Industrial Design suitable for harsh environments
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Compatible with Safety Manager and FSC I/O systems
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | FC-IOTA-R24 |
| Part Number | 51306505-175 |
| Product Type | Redundant IO Termination Assembly (IOTA) |
| Channel Count | 24 channels |
| Redundancy | Dual signal and power path support |
| Supported Modules | FSC and Safety Manager I/O modules |
| Terminal Type | Screw terminals or pluggable connectors |
| Field Signal Types | Digital and analog I/O, depending on attached modules |
| Power Distribution | Redundant 24 VDC paths |
| Diagnostics Support | Integrated status monitoring and channel fault detection |
| Hot-Swappable Support | Yes, with compatible I/O modules |
| Operating Temperature | -20°C to +60°C (-4°F to +140°F) |
| Storage Temperature | -40°C to +85°C (-40°F to +185°F) |
| Humidity | 5% to 95% RH, non-condensing |
| Construction Material | Flame-retardant industrial-grade plastic and metal base |
| Mounting Method | DIN rail or panel-mount |
| Dimensions | 64 x 120.7 x 443.2 mm |
| Weight | 0.57 kg |
| Certifications | CE, UL, CSA, RoHS, SIL 2/3 compliant (when used in certified system) |
Industry Applications
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Oil & Gas Facilities: Reliable signal interface in redundant safety systems
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Power Generation Plants: Safe field signal termination for SIS and BPCS applications
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Petrochemical Plants: I/O wiring termination for ESD, BMS, and F&G systems
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Water & Wastewater Treatment: High-availability wiring solutions for distributed control
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Pharmaceutical Manufacturing: Clean and secure terminations in validated environments
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Pulp and Paper Mills: Robust wiring interface for harsh process conditions
Product Advantages
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Enhanced System Availability: Redundant architecture eliminates single points of failure
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Simplified Wiring and Maintenance: Organized termination and labeling reduce errors and downtime
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Flexible Mounting: Fits into standard DIN rail panels or enclosures
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Hot-Swappable Ready: Compatible with live replacement of connected I/O modules
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Diagnostics Integration: Speeds up troubleshooting with fault detection and status LEDs
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Standardized Design: Ensures compatibility across Honeywell safety and control platforms
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Compact Footprint: High-density configuration optimizes cabinet space
Frequently Asked Questions (FAQ)
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Q: What is the primary function of the FC-IOTA-R24?
A: It provides a termination interface between field wiring and Honeywell I/O modules, supporting redundant architectures. -
Q: How many channels does it support?
A: It supports 24 I/O channels in a redundant configuration. -
Q: Is it compatible with all Honeywell I/O modules?
A: It is compatible with most FSC and Safety Manager I/O modules, especially those designed for redundant setups. -
Q: Can it be used in hot-swappable systems?
A: Yes, it fully supports hot-swappable modules, minimizing downtime during replacement. -
Q: What kind of field signals does it support?
A: It supports both analog and digital I/O, depending on the I/O module used. -
Q: How is power managed within the IOTA?
A: It provides redundant 24 VDC distribution to support I/O module power needs. -
Q: Is it certified for use in safety systems?
A: Yes, it is SIL 2/3 compliant when installed within a certified Honeywell system. -
Q: Does it include channel-level diagnostics?
A: Yes, it includes basic diagnostics such as fault detection and status indication. -
Q: What type of terminals does it use?
A: Typically uses screw-type or pluggable connectors for secure and easy field wiring. -
Q: Can I mount it outside a cabinet?
A: It is designed for use within enclosures, with DIN rail or panel-mounting options.
Related or Similar Honeywell Models
| Model Number | Description |
|---|---|
| FC-IOTA-R16 | 16-Channel Redundant IO Termination Assembly |
| FC-IOCHAS-0001R | Redundant I/O Module Chassis |
| FC-IO-0001 | I/O Expansion Module |
| FC-TDIO51 | Digital Input/Output Module for Safety Systems |
| FC-AI-1620 | 16-Channel Analog Input Module |
| FC-DO-0824 | 8-Channel Digital Output Module |
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| Model Number | Description |
|---|---|
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