Overview
The Honeywell FS-TSDI-16UNI, also cataloged as the TSDI-16UNI field termination assembly (FTA), provides the electrical interface between field wiring and the Honeywell Safety Manager system through the SICC-0001/Lx system interconnection cable. It supports 16 digital input channels with NAMUR compatibility and 24 VDC or 48 VDC input configurations. The channels are arranged in two groups of eight, each protected by a 250 mA slow-acting fuse in the common positive supply.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | FS-TSDI-16UNI |
| Spare Model | TSDI-16UNI |
| Brand | Honeywell |
| Product Type | Safe Digital Input Field Termination Assembly |
| System | Honeywell Safety Manager |
| Origin | USA |
| Weight | 0.15 kg |
| Dimensions | 9 x 7 x 5.8 cm |
| Input Type | Digital input, NAMUR compatible |
| Input Voltage | 24 VDC / 48 VDC configurations |
| Number of Channels | 16 |
| Channel Grouping | 2 groups of 8 channels |
| Fuse Rating | 250 mA, slow-acting |
| Fuse Dimensions | 5 x 20 mm |
| Maximum Voltage | 50 VDC, per supplied IEC 61010-1 (1990) specification |
| Maximum Output Current per Fuse | 175 mA |
| System Interconnection | SICC-0001/Lx |
| Compatible Input Module | SDIL-1608 |
| Approvals | CE, TUV, UL, CSA, FM |
Field Wiring and Safety Manager Interface
The FS-TSDI-16UNI terminates external field wiring and connects it to a redundant pair of SDIL-1608 safe digital input modules through the SICC-0001/Lx system interconnection cable. Each group of eight channels shares a 250 mA slow-acting fuse in the common positive supply.
The connected SDIL-1608 modules provide channel-level loop monitoring for open-circuit and short-circuit conditions. Therefore, the diagnostic capability depends on the connected input module and its configured field circuit. The maximum permissible channel voltage must be verified against the applicable input module specifications and system documentation.
Frequently Asked Questions (FAQ)
Q: How many digital input channels does the FS-TSDI-16UNI support?
A: It provides 16 channels, arranged in two groups of eight.
Q: What is the function of the 250 mA fuses?
A: Each fuse protects the common positive supply for one group of eight channels. The specified fuse size is 5 x 20 mm. The listed maximum output current per fuse is 175 mA.
Q: Does the FS-TSDI-16UNI perform open-circuit and short-circuit monitoring independently?
A: The supplied technical description assigns these monitoring functions to the connected SDIL-1608 safe digital input modules. The FS-TSDI-16UNI serves as the field termination interface.
Field Installation Guidelines
- Verify the assembly model and terminal assignments against the Honeywell Safety Manager installation documentation before wiring.
- Confirm that the field input voltage and NAMUR sensor configuration match the connected SDIL-1608 input module specifications.
- Check the SICC-0001/Lx cable type, connector orientation, and connection to the designated redundant input modules.
- Observe the two groups of eight channels when checking fuse protection and field wiring.
- Route field signal wiring separately from high-voltage and high-current conductors where practical to reduce electrical interference.
- Apply the grounding and cable-shield termination methods specified by the system documentation.
- Before energizing the assembly, inspect wiring polarity, terminal tightness, fuse ratings, and continuity.
- Do not exceed the applicable input module voltage limits. Verify the listed 50 VDC maximum against the documentation for the installed hardware revision.
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