Honeywell FS-TSFIRE-1624 Safe Fire Detector Input FTA

Product Overview

The Honeywell FS-TSFIRE-1624 is a high-integrity fire detector interface module designed for demanding Safety Manager architectures. It provides 16 supervised digital input channels that support fire detection devices in hazardous industrial areas. Moreover, its robust electronics maintain stable 24 VDC line monitoring, ensuring consistent performance under fluctuating field conditions. Engineers value this module because it integrates seamlessly with Honeywell SAI-1620m input units through a dedicated SICC cable. The compact DIN-rail form factor also simplifies cabinet layout while maintaining excellent wiring accessibility.

Key Benefits and Functional Highlights

The module delivers reliable signal acquisition for fire detection loops without introducing unnecessary system complexity. In addition, each channel includes built-in monitoring that detects faults quickly and accurately, supporting safety-critical SIL architectures. The unit operates efficiently in harsh oil, gas, chemical, and power generation facilities where high electromagnetic immunity is essential. Furthermore, its compatibility with redundant SAI-1620m modules enables fault-tolerant system designs that maintain continuous protection. Installers appreciate the straightforward screw terminal layout that speeds up field wiring and reduces commissioning effort.

Technical Specifications

• Model: FS-TSFIRE-1624

• Type: Safe Fire Detector Input FTA

• Manufacturer: Honeywell

• Channels: 16 digital detector input channels

• Mounting: DIN EN rail, universal snap-in

• Field Termination: Screw terminals, max 2.5 mm² (AWG14)

• Torque Requirement: 0.5 Nm (0.37 ft-lb)

• External Power: 24 VDC (+25% / -15%)

• Max Current Consumption: 570 mA at 24 VDC

• No-Load Current: Typical 11 mA

• Input Voltage with 4.7 kΩ EOL: Typical 20.5 VDC

• Input Voltage (No Load): Typical 23.5 VDC

• Shorted Current: Approx. 35 mA at 24 VDC

• Channel Resistance: 680 Ω ±5%

• Line Monitoring: Integrated supervision for safety applications

• Dimensions: 3.8 cm × 14.0 cm × 21.1 cm

• Weight: 0.3 kg

Typical Applications and System Integration

This FTA supports fire detection loops in complex plants where reliability and quick diagnostics are essential. Therefore, it is widely used in oil and gas production sites that require supervised digital detection circuits. Chemical processing plants integrate the FS-TSFIRE-1624 to maintain compliance with stringent safety regulations. Power generation facilities also deploy this module to support high-availability safety instrumented systems. For instance, redundant SAI-1620m configurations often pair with this FTA to ensure uninterrupted safety monitoring during equipment failures.

Support, Reliability, and Maintenance

The module features a rugged industrial design that minimizes service needs throughout its operating life. Moreover, engineers can perform rapid replacement thanks to its standardized mounting and clear wiring layout. Routine inspections require minimal downtime because diagnostic features reveal wiring or detector issues quickly. Honeywell’s long-term product ecosystem ensures consistent availability of accessories, spare modules, and documentation for lifecycle support.

FAQ

Q1: Does the FS-TSFIRE-1624 support supervised fire detector loops?
Yes, each channel includes built-in line monitoring to detect open circuits, shorts, or device faults.

Q2: Can this FTA be used in hazardous locations?
Yes, it holds Class I, Division 2 certification for installation in hazardous industrial environments.

Q3: Which system module does it connect to?
It connects to Honeywell Safety Manager SAI-1620m modules using SICC-0001/Lx cables.

Q4: Is redundancy supported in Safety Manager architectures?
Yes, it integrates with redundant SAI-1620m modules for fault-tolerant system operation.

Q5: What type of field wiring does it accept?
It uses screw terminals that support wires up to 2.5 mm² for reliable industrial connections.