Product Overview

The Honeywell FC-TCNT11 serves as a high-precision Redundant Counter Input Module within the Safety Manager SC (S300 IOTA) architecture. This module specializes in interfacing pulse and frequency signals from field instrumentation directly into the Safety Manager controller. It provides the essential logic for monitoring flow meters, tachometers, and rotating machinery speed in safety-critical loops. Carrying a full SIL3 certification, the FC-TCNT11 ensures that frequency-based data maintains the highest level of integrity for emergency shutdown (ESD) and process control functions. We supply this unit as 100% Brand New and Original in Factory Packing.

Technical Specifications

Engineering Advantages

• High-Resolution 32-Bit Tracking: The FC-TCNT11 utilizes a 32-bit register to accumulate pulse counts. This high capacity prevents counter rollover in high-frequency applications, ensuring accurate totalization for flow measurement and event logging over extended periods.

• Redundant System Reliability: This module supports the redundant S300 IOTA configuration. By installing a pair of FC-TCNT11 modules, the system eliminates single points of failure in the pulse-acquisition path. If one module detects an internal fault, the secondary module seamlessly maintains the pulse count without data loss.

• Superior Signal Conditioning: The hardware includes robust isolation and noise filtering to reject electromagnetic interference (EMI) common in industrial environments. This ensures the controller receives clean, debounced pulse data even when field wiring runs near high-power motors or drives.

• SIL3 Rated Diagnostics: Integrated diagnostics continuously monitor the health of the input circuit. The module detects line faults, such as open or shorted wiring, and reports them immediately to the Safety Manager console. This proactively ensures that speed or flow-based interlocks remain available when needed.

• Extreme Thermal Performance: Industrial-grade components allow the module to operate in ambient temperatures ranging from –40°C to +85°C. This resilience makes the FC-TCNT11 suitable for remote instrument enclosures (RIE) in harsh geographic regions without requiring active climate control.

• Non-Disruptive Maintenance: The hot-swap capability allows technicians to replace a module while the safety system remains energized. This prevents unplanned downtime and maintains the integrity of the safety loop during routine hardware updates.

FAQs

• Can the FC-TCNT11 handle high-frequency tachometer signals?

  Yes. The module supports frequency ranges up to several kHz. It provides highly accurate speed monitoring for turbines, compressors, and other high-speed rotating equipment within the Safety Manager SC ecosystem.

• Does this module support redundancy for flow totalization?

  Absolutely. When used in a redundant S300 IOTA base, two FC-TCNT11 modules synchronize their 32-bit registers. This ensures that a single hardware failure does not reset the totalized flow count or trip the safety logic.

• What type of field signals are compatible with the FC-TCNT11?

  The module interfaces with 24 VDC pulse signals. It typically connects to pulse-output flow meters (positive displacement, turbine, or vortex) and proximity-based speed sensors.

• Is the FC-TCNT11 "Brand New" or refurbished?

  We guarantee that every unit is 100% Brand New and Original. Each FC-TCNT11 ships in its original Honeywell factory-sealed packaging with full traceability for safety audit requirements.