HONEYWELL FC-TDIO51 Hybrid Temperature & Discrete I/O Module
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HONEYWELL FC-TDIO51 Hybrid Temperature & Discrete I/O Module
The HONEYWELL FC-TDIO51 is a hybrid temperature and discrete I/O module, specifically designed as part of Honeywell’s Experion Process Knowledge System (PKS) to bridge the gap between thermal monitoring and on/off control in distributed control systems (DCS). Its primary role is to collect temperature data from thermocouples or RTDs, monitor discrete signals (such as limit switches or relay states), and transmit both types of data to the central controller—while also sending discrete output commands to actuators or alarms when needed. What distinguishes the HONEYWELL FC-TDIO51 is its unique combination of 8 temperature input channels and 16 discrete I/O points (8 inputs, 8 outputs), making it a space-saving solution for systems requiring both thermal oversight and binary control. It integrates seamlessly with Honeywell’s Control Station and Safety Manager, as well as third-party DCS platforms via standard protocols, offering engineers and integrators flexibility in system design.
Model FC-TDIO51
Brand Honeywell
Type Hybrid Temperature & Discrete I/O Module
Power Supply 24 V DC (18–30 V DC range)
Operating Temperature -40°C to 70°C (-40°F to 158°F)
Mounting DIN rail (35 mm)
Dimensions 140 mm x 170 mm x 85 mm (W x H x D)
Weight 0.95 kg (2.09 lbs)
Temperature Inputs 8 channels (thermocouples J/K/T/E/R/S/B; RTDs PT100/PT1000)
Discrete Inputs 8 channels (24 V DC, sinking/sourcing)
Discrete Outputs 8 channels (24 V DC, 5 A max per channel)
Interfaces 1 x High-Speed Backplane Connector
Certifications CE, UL, CSA, ATEX, IEC 61010-1
Cooling Passive (conduction-based)
Environmental Rating
IP20 (when installed in enclosure)
The HONEYWELL FC-TDIO51 is a hybrid temperature and discrete I/O module, specifically designed as part of Honeywell’s Experion Process Knowledge System (PKS) to bridge the gap between thermal monitoring and on/off control in distributed control systems (DCS). Its primary role is to collect temperature data from thermocouples or RTDs, monitor discrete signals (such as limit switches or relay states), and transmit both types of data to the central controller—while also sending discrete output commands to actuators or alarms when needed. What distinguishes the HONEYWELL FC-TDIO51 is its unique combination of 8 temperature input channels and 16 discrete I/O points (8 inputs, 8 outputs), making it a space-saving solution for systems requiring both thermal oversight and binary control. It integrates seamlessly with Honeywell’s Control Station and Safety Manager, as well as third-party DCS platforms via standard protocols, offering engineers and integrators flexibility in system design.
FC-TDIO51
Whether deployed in new installations or as an upgrade to legacy systems, the HONEYWELL FC-TDIO51 delivers the dual functionality that modern industrial processes demand.
FC-TDIO51
Main features and advantages:
A key strength of the HONEYWELL FC-TDIO51 is its versatility in temperature sensing. The module supports a wide range of thermocouple types (J, K, T, E, R, S, B) and RTDs (PT100, PT1000), with built-in cold junction compensation for thermocouples that ensures accuracy even in fluctuating ambient conditions. This eliminates the need for separate temperature transmitters, reducing both cost and installation complexity. For discrete signals, the HONEYWELL FC-TDIO51 handles 24 V DC inputs and outputs, with the discrete outputs capable of switching up to 5 A—enough to directly control small motors, solenoid valves, or alarm sirens without external relays. Hardware-wise, the module features a rugged design with conformal coating, protecting against dust and moisture in harsh industrial environments, while its compact footprint (140 mm width) allows for easy integration into crowded control cabinets.
Reliability is another hallmark of the HONEYWELL FC-TDIO51. It includes advanced diagnostics that monitor for open thermocouple circuits, shorted RTDs, and faulty discrete connections, providing real-time alerts to operators via the DCS. The module’s temperature channels offer a measurement accuracy of ±0.1°C, ensuring precise thermal control in applications like batch cooking or semiconductor annealing. Its discrete I/O points feature debounce settings that filter out electrical noise, preventing false signals from disrupting processes. Like other Honeywell modules, the HONEYWELL FC-TDIO51 supports hot-swapping, allowing for replacement during operation to minimize downtime—a critical feature in 24/7 production environments.
FC-TDIO51
Technical specifications:
Model FC-TDIO51
Brand Honeywell
Type Hybrid Temperature & Discrete I/O Module
Power Supply 24 V DC (18–30 V DC range)
Operating Temperature -40°C to 70°C (-40°F to 158°F)
Mounting DIN rail (35 mm)
Dimensions 140 mm x 170 mm x 85 mm (W x H x D)
Weight 0.95 kg (2.09 lbs)
Temperature Inputs 8 channels (thermocouples J/K/T/E/R/S/B; RTDs PT100/PT1000)
Discrete Inputs 8 channels (24 V DC, sinking/sourcing)
Discrete Outputs 8 channels (24 V DC, 5 A max per channel)
Interfaces 1 x High-Speed Backplane Connector
Certifications CE, UL, CSA, ATEX, IEC 61010-1
Cooling Passive (conduction-based)
Environmental Rating
IP20 (when installed in enclosure)
Contact Us Phone:+86 16626708626 WeChat/WhatsApp:+86 16626708626 Email: 3772179818@qq.com
FC-TDIO51
Application areas:
In industrial environments where the ability to monitor and control both temperature and discrete signals is critical to process efficiency, a versatile mixed-signal module becomes a linchpin of operations. Consider a pharmaceutical manufacturing plant, where tracking the temperature of 8 bioreactors while monitoring the open/closed status of 16 isolation valves ensures sterile conditions and precise batch timing. Or a chemical processing facility, where regulating the heat in 6 reaction vessels and controlling the on/off state of 12 pumps keeps reactions within safe parameters. These are the scenarios where the HONEYWELL FC-TDIO51 proves its value, serving as a multi-functional workhorse in industrial automation systems. Used in industrial automation setups ranging from food and beverage production to HVAC control in large facilities, the HONEYWELL FC-TDIO51 is engineered to handle both temperature sensing and discrete I/O tasks in a single compact unit. It’s particularly valuable in applications where space is limited but the need for diverse signal handling is high, such as in modular skid systems or retrofitted control panels. The HONEYWELL FC-TDIO51 addresses the challenge of integrating temperature monitoring and discrete control into a unified system, reducing complexity and improving response times in dynamic processes.
FC-TDIO51
Related products:
HONEYWELL FC-SDI-1624 – 16-channel analog input module that complements the HONEYWELL FC-TDIO51 by adding high-precision analog monitoring to mixed-signal systems.
HONEYWELL FC-SDO-0824 – 8-channel analog output module that pairs with the HONEYWELL FC-TDIO51 for applications requiring both discrete control and variable actuation.
HONEYWELL FC-PSU-24V-10A – Power supply unit optimized to deliver stable 24 V DC to the HONEYWELL FC-TDIO51 and connected field devices.
HONEYWELL FC-TC-EXT – Thermocouple extension module that adds 8 additional temperature channels to the HONEYWELL FC-TDIO51.
HONEYWELL FC-DIAG-04 – Advanced diagnostic module that enhances the HONEYWELL FC-TDIO51’s monitoring capabilities with predictive failure alerts.
HONEYWELL FC-ISO-16 – Isolation module that provides galvanic isolation for the HONEYWELL FC-TDIO51’s discrete channels in high-noise environments.
HONEYWELL FC-BP-03 – Backplane adapter allowing the HONEYWELL FC-TDIO51 to integrate with Honeywell Series 800 DCS racks.
HONEYWELL FC-COMM-02 – Communication bridge that connects the HONEYWELL FC-TDIO51 to Profibus networks for expanded system integration.
Installation and maintenance:
Before installing the HONEYWELL FC-TDIO51, ensure the mounting rail is properly grounded to minimize electrical noise, which can affect temperature measurement accuracy—this is especially critical for thermocouple inputs, which are sensitive to EMI. Verify that the control cabinet has adequate ventilation, as the module’s passive cooling relies on ambient air flow; maintain a minimum clearance of 75 mm above and below to prevent heat buildup. When wiring the HONEYWELL FC-TDIO51, separate temperature sensor cables from power and discrete wiring by at least 100 mm to avoid interference. For thermocouple connections, use thermocouple-grade wire with color-coded insulation to match the sensor type, and ensure connections are tight to prevent cold junction errors. Label all discrete I/O wires clearly to simplify troubleshooting.
For maintenance, schedule semi-annual calibration of the HONEYWELL FC-TDIO51’s temperature channels using certified reference sensors to maintain ±0.1°C accuracy. Conduct monthly visual inspections to check for loose connections, especially on discrete output terminals that may experience vibration-induced wear. Use Honeywell’s Experion PKS software to run diagnostic scans quarterly, which can identify drift in temperature channels or intermittent faults in discrete I/O. The module’s design allows for in-place calibration of temperature inputs without removal from the DIN rail, reducing maintenance downtime. With proper care, the HONEYWELL FC-TDIO51 is engineered to provide reliable service for 10+ years in typical industrial environments.
WhatsApp: +86 16626708626
Email: 3772179818@qq.com
Phone: +86 16626708626
