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Product Introduction
The Honeywell FTA-T-21 is a Field Terminal Assembly (FTA) module designed for interfacing with Honeywell’s process control systems, specifically the TDC 3000 and Experion series. As a high-reliability I/O termination unit, it provides robust signal conditioning and wiring interface between field devices and system controllers. The FTA-T-21 is widely used in safety-critical industrial environments due to its reliability and ease of integration into existing control infrastructures.
This terminal assembly plays a critical role in ensuring accurate signal transmission and protection for analog and discrete inputs, providing isolation and wiring organization for efficient maintenance and system expansion.
Product Advantages
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High Reliability: Designed for industrial-grade continuous operation in harsh environments.
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System Compatibility: Seamless integration with Honeywell’s TDC 3000, Experion PKS, and legacy systems.
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Easy Maintenance: Modular construction and clearly labeled terminals simplify troubleshooting and field servicing.
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Efficient Signal Handling: Ensures proper termination and conditioning of analog and discrete signals.
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Compact Design: Optimizes cabinet space and allows for high-density wiring configurations.
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Durable Construction: Built with industrial-grade materials resistant to shock, vibration, and temperature variation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | Honeywell FTA-T-21 |
| Product Type | Field Terminal Assembly (FTA) |
| System Compatibility | TDC 3000, Experion PKS, and legacy systems |
| Signal Type | Analog and discrete input/output |
| Terminal Count | 21 terminals |
| Mounting Type | DIN rail or panel mount |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 5% to 95% non-condensing |
| Insulation Resistance | >100 MΩ at 500 VDC |
| Withstand Voltage | 1500 VAC for 1 minute |
| Dimensions | 92 x 71 x 58 mm |
| Weight | 0.5 kg |
| Housing Material | Flame-retardant industrial plastic |
| Certifications | CE, UL, RoHS compliant |
Product Applications
The FTA-T-21 is widely deployed in industrial automation systems requiring reliable signal interface and termination. Typical application sectors include:
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Oil and Gas Processing Facilities
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Power Generation Plants
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Chemical Manufacturing Units
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Water and Wastewater Treatment Plants
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Pulp and Paper Mills
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Pharmaceutical Production Systems
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Food and Beverage Processing
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Metallurgical and Mining Control Systems
It is particularly favored in DCS architectures for use in both safe and hazardous environments, providing interface integrity between field devices and control logic.
Installation Instructions
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Ensure that power to the I/O subsystem is turned off before installation.
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Mount the FTA-T-21 on a DIN rail or secure it using panel screws.
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Connect signal wires to the labeled terminals, observing polarity and signal type.
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Confirm tight and secure connections to prevent signal loss or shorts.
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Verify that grounding is in accordance with Honeywell’s recommendations for noise immunity.
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Once wired, power up the system and use diagnostic tools to confirm signal integrity.
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Keep wiring diagrams and terminal labels easily accessible for future maintenance.
10 Frequently Asked Questions (FAQs)
Q1: What systems is the FTA-T-21 compatible with?
A1: It is compatible with Honeywell TDC 3000, Experion PKS, and various legacy platforms.
Q2: Does the FTA-T-21 support both analog and discrete signals?
A2: Yes, it is designed to terminate both analog and discrete input/output signals.
Q3: Can this module be used in outdoor enclosures?
A3: It must be housed in a weatherproof, temperature-controlled enclosure if used outdoors.
Q4: How many terminals does the FTA-T-21 provide?
A4: It provides 21 terminals for signal connections.
Q5: What is the operating temperature range of the FTA-T-21?
A5: It operates between -20°C to +70°C.
Q6: Is the terminal assembly field-serviceable?
A6: Yes, it is designed for quick field servicing with accessible terminals and removable wiring.
Q7: What certifications does this module have?
A7: CE, UL, and RoHS compliance are standard.
Q8: Can this FTA be used in safety instrumented systems?
A8: Yes, it is often used in SIS environments with appropriate configuration and system-level validation.
Q9: How should grounding be handled for this unit?
A9: Proper grounding according to Honeywell’s electrical noise mitigation guidelines is essential.
Q10: Is it backward-compatible with older I/O subsystems?
A10: Yes, it is specifically engineered for backward compatibility with older Honeywell subsystems.
6 Related or Same Series Models
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Honeywell FTA-T-22 – Dual termination variant with higher density.
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Honeywell FTA-T-23 – Termination assembly for thermocouple signals.
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Honeywell FTA-T-24 – Designed for isolated discrete outputs.
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Honeywell FTA-T-25 – Multipoint terminal block with fuse protection.
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Honeywell FTA-T-26 – For high-speed digital signals.
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Honeywell FTA-T-20 – Basic analog termination block for legacy systems.
6 Popular Honeywell Models (Same Brand)
| Model Number | Product Type | Dimensions (mm) | Weight | Voltage Range |
|---|---|---|---|---|
| CC-PDOB01 | Digital Output Module | 130×110×25 | 290g | 24 VDC |
| CC-PAIH01 | Analog Input Module | 130×110×25 | 280g | 0-10 V, 4-20 mA |
| CC-PAOH01 | Analog Output Module | 130×110×25 | 285g | 0-10 V, 4-20 mA |
| 51401469-100 | High Level Analog I/O FTA | 120×95×60 | 300g | ±10 V |
| FTA-T-22 | Field Terminal Assembly | 110×90×60 | 290g | Analog/Discrete |
| 51308307-175 | Safety Manager I/O Module | 140×120×35 | 350g | 24 VDC |
