Description
Honeywell FC-TSDO-0824 | Safe Digital Output Field Termination Assembly
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | FC-TSDO-0824 |
| Manufacturer | Honeywell |
| Product Type | Safe Digital Output Field Termination Assembly |
| System | Honeywell Safety Manager / FSC |
| Output Channels | 8 |
| Nominal Application | 24 VDC |
| Maximum Voltage | 36 VDC |
| Maximum Continuous Current | 1.5 A/channel |
| Current Limitation | Actual maximum current depends on connected output module |
| System Cable Interface | SICC-0001/Lx |
| Field Connection | Screw terminals |
| Maximum Wire Size | 2.5 mm² / AWG 14 |
| Strip Length | 7 mm / 0.28 in |
| Terminal Tightening Torque | 0.5 Nm / 0.37 ft-lb |
| DIN Rail | TS32 / TS35 × 7.5 |
| Rail Length Used | 61 mm / 2.40 in |
| Dimensions | 60 × 70 × 58 mm |
| Approvals | CE, TÜV, UL, CSA, FM |
| Environmental Treatment | Conformal coated |
Honeywell’s hardware reference identifies FS-TSDO-0824 and FC-TSDO-0824 as the two type numbers for the standard TSDO-0824 FTA. It specifies eight channels, 36 VDC maximum voltage, and 1.5 A maximum continuous current per channel. Honeywell also distinguishes FC-type modules as conformal-coated versions.
Product Introduction
The Honeywell FC-TSDO-0824 is a Safe Digital Output Field Termination Assembly used in the Honeywell Safety Manager architecture. It provides the field-side termination between the SICC-0001/Lx system interconnection cable and external field wiring for the associated safe digital output arrangement. The unit handles eight digital output channels and is intended for 24 VDC applications, with a specified maximum voltage of 36 VDC.
This is an FTA, not the safety output processor itself. That distinction matters during replacement: the field termination assembly, SDO output module, system interconnection cable, terminal wiring, and configured safety logic form one functional chain. The FC designation also matters because Honeywell identifies FC-type hardware as conformal coated, making it different from the corresponding FS-type non-conformal-coated version.
FC-TSDO-0824
Application Scenarios & Field Pitfalls — The Engineer’s Perspective
Engineering Pain Point
A common maintenance mistake is treating the FC- as an ordinary eight-channel 24 VDC digital output card. It is not. Its job is field termination and interface, while the actual safe output function is provided by the associated Safety Manager output module. Honeywell documentation specifically identifies the as the interface between the SDO-0824 and the SICC-0001/Lx cable.
Typical Applications
- Safety Manager shutdown outputs driving field solenoids, contactors, annunciators, and other discrete actuators.
- Emergency shutdown and process-trip architectures requiring safe digital output termination.
- Process plants using conformal-coated Safety Manager I/O hardware in demanding environmental conditions.
- Existing FSC/Safety Manager installations where the original FTA and field wiring must be maintained without redesigning the I/O architecture.
Technical Pitfalls to Avoid
- Do not substitute the FTA for the SDO module. FC- is the field termination component; the associated SDO module performs the actual I/O processing.
- Do not confuse FC- with FC-TSDO-0824C. The latter is a current-limited variant with a substantially different electrical function and physical specification. Honeywell identifies FC-TSDO-0824C separately as a current-limited 24 VDC FTA.
- Check the FC/FS designation. Honeywell documentation states that FS-type FTAs are non-conformal coated, while FC-type FTAs are conformal coated. This can matter when replacing hardware in an existing certified or environmentally controlled installation.
- Verify the complete cable path. The SICC-0001/Lx interconnection cable and the receiving SDO configuration must correspond to the FTA. Do not assume that an FTA with the same channel count can be substituted simply because its terminals physically fit.
- Do not use the 1.5 A figure as the guaranteed load rating of every installed output. Honeywell explicitly states that the actual maximum current is defined by the connected output module.
Related Products
- Honeywell FS- — The corresponding non-conformal-coated version of the eight-channel 24 VDC safe digital output FTA. Verify environmental and certification requirements before substitution.
- Honeywell FC-TSDO-0824C — Conformal-coated, current-limited version. It is not a direct electrical substitute for FC-; its output is limited to approximately 110 mA per channel.
- Honeywell FS-TSDO-0424 — Four-channel safe digital output FTA for 24 VDC applications; channel count and wiring are different.
- Honeywell FC-TSDO-04UNI — Four-channel safe digital output FTA supporting multiple DC voltage classes; not equivalent to the eight-channel 24 VDC unit.
- Honeywell FC-TSDI-1624 — Safe digital input FTA rather than an output termination assembly.
- Honeywell FC-TRO-0824 — Eight-channel relay-contact digital output FTA; its output architecture is different from the transistor-style safe digital output termination arrangement.
- Honeywell FC-TDOL-0724 — Seven-channel loop-monitored digital output FTA; intended for a different output/monitoring architecture.
- Honeywell FC-TSRO-0824 — Relay-output FTA for Safety Manager applications; do not interchange based only on eight-channel count.
Procurement and Replacement Note
For a field replacement, specify the complete FC- identification, not merely “TSDO 8-channel FTA.” Confirm the FC versus FS coating version, hardware/version marking, associated SDO-0824 output module, SICC-0001/Lx cable, terminal wiring, and installed Safety Manager architecture before accepting a substitute.
One important distinction is FC- versus FC-TSDO-0824C. They share the eight-channel/24 VDC family designation, but the C version is a current-limited design with different electrical characteristics and dimensions. Treating them as interchangeable can create an output-load or mechanical integration problem.
