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Product Introduction
The Honeywell FS-TSDI-1648 is a Safe Digital Input Field Terminal Assembly (FTA) Module engineered for integration into Honeywell’s Safety Manager™ and other safety instrumented systems (SIS). This module is optimized for receiving multiple isolated digital signals from field devices such as limit switches, pressure sensors, emergency stops, and interlock mechanisms, ensuring secure and accurate signal communication under SIL-rated conditions.
Designed to meet demanding process industry standards, the FS-TSDI-1648 provides robust electrical isolation, extended temperature operation, and high channel density—all essential for reliable safety operations in oil & gas, petrochemicals, power generation, and other critical sectors.
Product Specifications
| Parameter | Specification |
|---|---|
| Model Number | FS-TSDI-1648 |
| Product Type | Safe Digital Input Field Terminal Assembly (FTA) |
| Number of Channels | 48 isolated digital input channels |
| Input Signal Type | Dry contact or active 24VDC inputs |
| Nominal Input Voltage | 24 VDC |
| Input Signal Range | 18 VDC – 30 VDC |
| Typical Input Current | 2 mA |
| Channel Isolation | Channel-to-channel and channel-to-system isolation |
| Safety Compliance | IEC 61508 (up to SIL3), TUV-certified |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Humidity Range | 5% – 95% RH, non-condensing |
| Mounting Style | DIN rail |
| Material Construction | Flame-retardant polyamide enclosure |
| Environmental Rating | IP20 |
| Dimensions (W x H x D) | 90 × 70 × 58 mm |
| Weight | 0.42 kg |
Product Applications
The FS-TSDI-1648 is ideally suited for high-density digital input applications across multiple industrial domains. Its main application areas include:
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Emergency Shutdown Systems (ESD)
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Fire & Gas Detection Systems
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Burner Management Systems
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Process Safety Interlocks
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Machinery Safety and Turbomachinery Control
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Safety Instrumented Functions (SIF) in refineries and chemical plants
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SIL3-rated safety systems in nuclear and thermal power plants
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Centralized safety control panels in offshore and marine environments
Product Advantages
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High-Density Input Capability: Offers 48 individual digital input channels, minimizing space and maximizing data acquisition.
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Certified Safety Integrity: TUV-certified for use in SIL3 applications under IEC 61508 guidelines.
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Robust Isolation: Provides full galvanic isolation between channels and the system, reducing electrical noise and cross-talk.
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Modular Integration: Seamlessly integrates into Honeywell’s Safety Manager™ platform for centralized safety control.
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Wide Environmental Range: Operates reliably in high-temperature and high-humidity conditions, making it ideal for harsh environments.
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Diagnostic Support: Built-in diagnostics and status LEDs support fast troubleshooting and predictive maintenance.
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Compact Footprint: Despite high channel count, maintains a compact form factor with DIN-rail compatibility.
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Field-Proven Reliability: Designed and tested to operate continuously in mission-critical safety systems with zero-tolerance for failure.
Frequently Asked Questions (FAQ)
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What is the FS-TSDI-1648 used for?
It is used to collect and safely transmit digital input signals from field devices to a central safety system, ensuring SIL-compliant performance. -
How many inputs can this module handle?
The FS-TSDI-1648 supports 48 isolated digital input channels. -
Is this module SIL-certified?
Yes, it is TUV-certified for use in systems up to SIL3 per IEC 61508. -
What type of signals does it accept?
It accepts dry contact or 24VDC active signals typically from field switches or sensors. -
Can this module be used in high-humidity areas?
Yes, it operates effectively in 5–95% RH non-condensing environments. -
What is the physical size of the FS-TSDI-1648?
The module measures 90 × 70 × 58 mm. -
Is it compatible with Honeywell’s Safety Manager™?
Absolutely, it is specifically designed for seamless integration with Safety Manager™ systems. -
Does it include diagnostics features?
Yes, onboard diagnostics and status indicators are provided for channel health and troubleshooting. -
How is the module mounted?
It is designed for DIN rail installation within control cabinets. -
Is hot swapping supported?
No, power must be turned off before installing or removing the module to ensure operator safety.
Related Models (Same Series or Functionally Similar)
| Model Number | Description | Channels | Signal Type | Safety Level |
|---|---|---|---|---|
| FS-TSDI-16115 | Safe Digital Input FTA Module (Low Density) | 16 | Digital Input | SIL3 |
| FS-TSAI-1620 | Safe Analog Input FTA Module | 16 | Analog Input (4–20mA) | SIL3 |
| FS-TSDO-0820 | Safe Digital Output FTA Module | 8 | Digital Output | SIL3 |
| FS-TSAO-0820 | Safe Analog Output FTA Module | 8 | Analog Output | SIL3 |
| FS-IOAI-1610 | Standard Analog Input Module | 16 | Analog Input | Industrial |
| FS-IOAO-0810 | Standard Analog Output Module | 8 | Analog Output | Industrial |
Popular Honeywell Models (Different Applications or Series)
| Model Number | Description | System Compatibility | Key Function |
|---|---|---|---|
| CC-TDIL01 | Digital Input Module, 24 VDC | Experion PKS, C300 | Standard Digital Input |
| CC-TDOB01 | Digital Output Module, 24 VDC | Experion PKS, C300 | Digital Actuation |
| 51401583-100 | 4-20mA Analog Output Module | Experion LX | Process Control Output |
| MC-TD0F22 | Digital Output (Fail-safe) Module | Safety Manager | High-integrity digital output |
| 51304493-100 | Redundant Processor Unit | Safety Manager | Safety CPU redundancy |
| FC-TPSU-2430 | Power Supply Unit | Safety Manager | Power Supply for SIL system |
