Honeywell FC-TSDI-1624C Digital Input FTA Termination Assembly(24 Vdc, 16 Channels)

Product Overview

The Honeywell FC-TSDI-1624C is a Safe Current-Limited Digital Input Field Termination Assembly (FTA) designed for Honeywell Safety Manager and FSC systems. It provides 16 channels of 24 VDC digital input with current limiting for safe operation in hazardous industrial environments. This FTA serves as the critical interface between field devices (switches, sensors, proximity detectors) and the safety controller, ensuring reliable signal acquisition with built-in protection.

Key Features

• 16 Digital Input Channels: High-density input for comprehensive field device monitoring
• Current-Limited Design: Built-in current limiting for safe operation and device protection
• 24 VDC Input Voltage: Standard industrial voltage with -15% to +30% tolerance
• Dual Overvoltage Protection: Complies with DIN V 19250 and VDE V 0801 standards
• Undervoltage Alarm: Alerts operators when supply voltage drops below safe thresholds
• Galvanic Isolation: Isolation between 5Vdc internal circuitry and field inputs
• Class I, Division 2: Suitable for hazardous location installations

Technical Specifications

• Model: FC-TSDI-1624C
• Type: Safe Digital Input FTA (Current Limited)
• Input Channels: 16
• Input Voltage: 24 VDC (-15% to +30%)
• Input Current: ≤ 15 mA at 24 VDC
• Response Speed: 1 millisecond
• Safety Integrity Level: SIL 2 / SIL 3 capable
• Dimensions: ~90 mm × 70 mm × 58 mm
• Weight: ~0.3 kg
• Termination: Screw terminals, max 2.5 mm² (AWG 14)
• Operating Temperature: -40°C to +70°C
• Approvals: CE, TÜV, UL, CSA, FM

Installation Guide

1. DIN Rail Mounting: Snap onto standard TS32/TS35 DIN EN rails
2. Field Wiring: Connect field devices to screw terminals (max 2.5 mm² wire, 7 mm strip length, 0.5 Nm torque)
3. SIC Cable Connection: Connect system interconnection cable (SICC-0001/Lx) to the SIC connector
4. Power Verification: Ensure 24 VDC supply remains within +30%/-15% tolerance
5. Grounding: Verify proper grounding via chassis keying pins

FAQ

Q: What is the difference between FC-TSDI-1624 and FC-TSDI-1624C?
A: The "C" suffix indicates the current-limited variant, which provides additional protection against overcurrent conditions in the field wiring.

Q: Can this FTA be used with non-Honeywell systems?
A: While physically compatible with standard DIN rail mounting, the SIC cable interface is specific to Honeywell Safety Manager/FSC systems.

Q: What types of field devices can connect?
A: Dry contacts, proximity switches, limit switches, and other 24 VDC digital input devices.

Selection Tips

• Use FC-TSDI-1624C when current limiting is required for field device protection
• For NAMUR proximity switch applications, consider FC-TSDI-16UNI
• For 48 VDC applications, use FC-TSDI-1648
• Ensure paired I/O module (e.g., SDI-1624) is installed in the chassis