Overview
The Honeywell FS‑TSDI‑1648 is a field termination assembly (FTA) module designed for safe digital input acquisition in safety instrumented systems. It supports 16 channels of 48 V DC digital inputs and is used to interface field wiring with safe digital input modules in redundant safety systems.
General Information
Brand: Honeywell
Country of Origin: United States
Model Number: FS‑TSDI‑1648
Series: Safety Manager / I/O Field Termination Assemblies
Product Type: Safe Digital Input FTA (48 V DC)
Application: Safety‑rated digital input termination for process automation and safety instrumented systems
Power Specifications
Supply Voltage: 48 V DC nominal (‑15% / +15%)
Input Channels: 16 digital input channels (2 groups of 8 channels)
Input Current: Typical ≤ 8 mA per channel at 48 V DC with redundant pair of modules
Protection Features: Short‑circuit and wiring‑fault protection; PTC current‑limiting on each group
Communication & Interface
Interface Type: Screw‑terminal field wiring connections for each channel; system interconnect cable to safe input module
Signal Format: 48 V DC digital inputs, compatible with standard safe digital input modules
Diagnostics: Channel status monitoring and fault‑detection capabilities integrated for safety‑system performance
Environmental
Operating Temperature: –40 °C to +70 °C
Storage Temperature: –55 °C to +85 °C
Humidity: Up to 95% RH, non‑condensing
Installation: DIN‑rail or cabinet‑mounted in indoor industrial control or safety equipment enclosures
Dimensions & Weight
Dimensions (L × W × H): Approx. 90 × 70 × 58 mm
Weight: Approx. 0.30 kg
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