Description
Core Product Summary
The Honeywell FC-TSHART-1620M is a field termination assembly (FTA) designed to interface field instrumentation with the SAI-1620m analog input module in a Honeywell Safety Manager control system. It provides 16 analog input channels arranged in two groups of eight and supports HART communication for compatible smart field instruments.
The assembly accepts input currents from 0 to 25 mA and has a nominal input resistance of 250 Ω with a ±1% tolerance. It uses an external 30 V DC supply and provides a 0–4 V DC signal output to the SAI-1620m. Its termination arrangement also supports connection to a HART multiplexer, allowing analog signal acquisition and digital field-device communication within the documented system configuration. The FC designation identifies the conformal-coated construction, which distinguishes it from the non-conformal-coated FS variant.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Honeywell |
| Model | FC-TSHART-1620M |
| Product type | Field Termination Assembly (FTA) |
| System | Safety Manager |
| Number of input channels | 16 |
| Channel arrangement | 2 groups of 8, with common 0 V per group |
| Input current range | 0–25 mA |
| Input resistance | 250 Ω ±1% |
| External power supply | 30 V DC |
| Current consumption without input loop loads | 3 mA |
| Output to SAI-1620m | 0–4 V DC |
| Output accuracy to SAI-1620m | 0.1% |
| Output resistance to passive transmitters | 270 Ω ±5% |
| Maximum HART output signal | 5 V peak-to-peak |
| Fuse rating | 315 mA, time-delay |
| Fuse dimensions | 5 × 20 mm |
| Module dimensions (L × W × H) | 250 × 70 × 60 mm |
| Mounting rail | DIN EN TS32 / TS35 × 7.5 |
| Rail length required | 251 mm |
| Maximum screw-terminal wire size | 2.5 mm² (AWG 14) |
| Terminal wire stripping length | 7 mm |
| Terminal tightening torque | 0.5 Nm |
Engineering Selection Highlights
- 16-channel input capacity: The assembly provides 16 analog input channels in two groups of eight. Check the project channel allocation and common 0 V arrangement before assigning field instruments.
- SAI-1620m signal interface: The FTA converts field current signals to a 0–4 V DC output for the associated analog input module. Confirm the complete signal path against the installed system design.
- HART communication support: Dedicated connections support compatible HART multiplexers, including specified MTL and Pepperl+Fuchs equipment. Select the appropriate multiplexer, cable, and connector arrangement.
- External transmitter power: The module uses a 30 V DC external supply for applicable field circuits. Passive transmitter loops require particular attention to supply availability and load requirements.
- External power monitoring: In safety-related applications, the Safety Manager application must monitor the external supply through the SAI-1620m when the documented configuration requires it.
- Conformal-coated construction: The FC version has conformal coating, distinguishing it from the non-conformal-coated FS version. Match the required construction to the equipment specification.
- DIN rail installation: The assembly supports TS32 and TS35 × 7.5 DIN EN rails. Allow for the specified rail length and the field wiring and connector layout.
System Compatibility & Integration Requirements
| Item / Dependency | Verified Compatibility or Requirement | Practical Note |
|---|---|---|
| Control system | Honeywell Safety Manager | Confirm the intended application and installed hardware configuration. |
| Analog input module | SAI-1620m | Connect through the specified system interconnection cable. |
| System interconnection cable | SICC-0001/Lx | Verify the required cable variant and connector arrangement. |
| HART multiplexer | MTL4842 or Pepperl+Fuchs KFD0-HMS-16 / KFD2-HMM-16 | Select the corresponding cable and FTA connector. |
| MTL connection | FLAT20-2.2 cable, CN2 connector | Match the documented interface arrangement. |
| Pepperl+Fuchs connection | K-HM26 cable, CN3 connector | Match the documented interface arrangement. |
| External supply | 30 V DC | Check the supply arrangement and field-loop power requirements. |
| Field signals | 0–20 mA and 4–20 mA DC applications | Confirm the configured input range and transmitter type. |
| Field wiring | Screw terminals with individual cable-shield terminals | Follow the project grounding and shielding design. |
FC-TSHART-1620M
FC-TSHART-1620M
Dimensions, Mounting & Connection Notes
The FC-TSHART-1620M uses a DIN rail mounting arrangement and screw terminals for field wiring, power, and ground connections.
- Physical dimensions: 250 × 70 × 60 mm (L × W × H).
- DIN rail: TS32 or TS35 × 7.5.
- Required rail length: 251 mm.
- Maximum conductor size: 2.5 mm² (AWG 14).
- Wire stripping length: 7 mm.
- Terminal tightening torque: 0.5 Nm.
- Power terminals: 1A, 1B, 2A, and 2B provide connections for the external supply feeds.
- Signal shielding: Each channel has a ground terminal for the field cable shield.
The external supply’s 0 V connection is directly connected to the common 0 V of the analog inputs. Review the grounding arrangement before connecting field wiring. The two groups of eight channels share a common 0 V within their documented circuit arrangement.
Detailed Product Overview
Field signal termination and conversion
The FC-TSHART-1620M is designed for analog field instrumentation that uses current-loop signals. Its 16 input channels are divided into two groups of eight, with a common 0 V arrangement. Each channel incorporates a precision resistor for converting input current into a voltage signal suitable for the SAI-1620m.
This arrangement makes the FTA an important part of the interface between field wiring and control-system input processing. When selecting the module, engineers should consider the transmitter output, loop current, field power requirements, channel assignment, and the electrical arrangement of the connected input module.
HART communication integration
In addition to analog signal conversion, the TSHART-1620m provides an interface to supported HART multiplexing equipment. The documented options include MTL and Pepperl+Fuchs hardware, with dedicated connectors and cable arrangements for each.
The HART connection must be treated as a separate integration requirement from the analog input path. Selecting the correct multiplexer, cable, and connector is necessary to establish the intended communication arrangement. The grounding and common-supply characteristics of the connected equipment must also be considered during design.
External power and safety-related applications
The assembly supports external transmitter power distribution with voltage and current limitation. Two external supply feed connections are provided, and the channels are protected in two groups of eight. The module also supports external power monitoring through the associated SAI-1620m configuration.
For safety-related applications, supply monitoring and signal processing must be incorporated into the approved Safety Manager application design. The presence of a safety-system interface alone does not establish the safety integrity level of an entire installation; that depends on the configured system and its applicable validation requirements.
Installation and procurement considerations
The FC construction uses conformal coating, which distinguishes it from the FS-TSHART-1620m variant. Procurement teams should match the full model designation to the bill of materials rather than relying on the shared TSHART-1620m family name.
Before installation or replacement, check the nameplate, terminal arrangement, external power wiring, system interconnection cable, HART interface requirements, and associated SAI-1620m configuration. These checks help prevent errors caused by mismatched termination hardware or field wiring.
Applications & System Role
The Honeywell FC-TSHART-1620M occupies the field termination layer of a Safety Manager analog input system. It connects field instruments to the SAI-1620m, providing the electrical interface between process signals and the control system’s analog input processing.
Its main engineering functions include:
- Analog signal conversion: Converts field current signals into the voltage levels required by the SAI-1620m.
- Smart instrument communication: Provides connections for compatible HART multiplexers so that supported field devices can communicate through the HART interface.
- Transmitter power distribution: Supplies applicable field circuits through current-limited output paths.
- External power supervision: Supports monitoring of the external power supply used by the field termination arrangement.
- Safety-related signal integration: Supports both safety-related and non-safety-related analog input applications within the documented system configuration.
For system design and maintenance, the key consideration is the complete signal path: field transmitter, termination assembly, interconnection cable, SAI-1620m, and the configured Safety Manager application.
FAQ
What is the Honeywell FC-TSHART-1620M?
It is a 16-channel field termination assembly that interfaces analog field instruments with the SAI-1620m analog input module in a Honeywell Safety Manager system. It also provides a connection interface for supported HART multiplexers.
How many input channels does the FC-TSHART-1620M provide?
It provides 16 analog input channels, arranged in two groups of eight with a common 0 V arrangement.
Which analog input module works with the FC-TSHART-1620M?
The documented companion module is the Honeywell SAI-1620m. The connection uses the specified SICC-0001/Lx system interconnection cable arrangement.
Does the FC-TSHART-1620M support HART communication?
Yes. It provides an interface for supported HART multiplexers, including the documented MTL4842 and Pepperl+Fuchs KFD0-HMS-16 or KFD2-HMM-16 options. The corresponding cable and connector must be selected for the chosen equipment.
What power supply does the FC-TSHART-1620M require?
Its documented external power requirement is 30 V DC, with a stated current consumption of 3 mA excluding input-loop loads. Actual supply sizing must account for the connected field circuits and the configured power arrangement.
What is the difference between FC-TSHART-1620M and FS-TSHART-1620M?
The documented construction distinction is that FC-type modules are conformal-coated, whereas FS-type modules are non-conformal-coated. Confirm the required construction against the equipment specification before ordering.
Which mounting and wiring requirements apply?
The assembly supports TS32 and TS35 × 7.5 DIN EN rails. The specified maximum wire size is 2.5 mm², the stripping length is 7 mm, and the terminal tightening torque is 0.5 Nm.
What should be checked before replacing an FC-TSHART-1620M?
Check the complete model designation, construction type, SAI-1620m interface, system cable, HART multiplexer connections, external supply arrangement, terminal assignments, and grounding configuration. For safety-related applications, verify the associated application configuration and required functional validation before returning the system to service.
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