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3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 8 |
| Maximum Voltage | 36 Vdc (IEC 1010, Overvoltage Category 3) |
| Maximum Continuous Current per Channel | 1.5 A (actual maximum defined by connected SDO-0824 module) |
| Compatible Output Module | FC-SDO-0824 / SDO-0824 (550 mA nominal) |
| Approvals | CE, TUV, UL, CSA, FM |
| Mounting | DIN EN rails TS32 / TS35 × 7.5 |
| Used Rail Length | 61 mm (2.40 in) |
| Termination | Screw terminals |
| Max Wire Diameter | 2.5 mm² (AWG 14) |
| Strip Length | 7 mm (0.28 in) |
| Tightening Torque | 0.5 Nm (0.37 ft-lb) |
| Module Dimensions | Approx. 60 × 70 × 58 mm (L × W × H) |
| Type Variants | FS-TSDO-0824 (non-coated), FC-TSDO-0824 (conformal coated) |
4. Product Introduction
The Honeywell FC-TSDO-0824 is the Field Termination Assembly (FTA) for the FC-SDO-0824 safe digital output module in the Safety Manager system. It provides the interface between the system interconnection cable and field wiring for eight 24 Vdc safe digital output channels.
The FTA accepts the solid-state outputs from the SDO-0824 module and brings them to screw terminals for connection to solenoids, actuators, and other field devices. It supports a maximum continuous current of 1.5 A per channel (limited in practice by the 550 mA rating of the SDO-0824). The conformal-coated FC version mounts on standard DIN EN rail and carries the same CE, TUV, UL, CSA, and FM approvals as the associated output module.
FC-TSDO-0824
FC-TSDO-0824
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No output voltage at field terminals | FTA not connected or open wiring | ✅ High | Verify SICC cable to ; measure continuity from module to FTA terminals | Reseat cable and check field wiring before replacing FTA |
| Output present at module but not at load | Loose screw terminal or broken wire | ✅ High | Measure voltage at FTA screw terminals under commanded ON; check torque (0.5 Nm) | Tighten terminals or replace field wiring |
| Channel short or overcurrent trip | Field short downstream of FTA | ❌ Low | Isolate field load and re-test; measure resistance at FTA terminals | Clear field short; FTA itself rarely fails |
| Intermittent contact | Loose DIN-rail mounting or terminal | ✅ Medium | Verify rail engagement and terminal torque | Re-seat FTA on rail and re-torque terminals |
| Diagnostic fault reported by Safety Manager | Wiring or module-side issue | ❌ Low | Confirm diagnostics first; check FTA continuity | FTA is passive; replace only after module and wiring are ruled out |
If diagnostics remain unclear, capture photos of the FTA wiring, terminal torque status, and diagnostic buffer, then contact technical support.
6. Frequently Asked Questions (FAQ)
Q: What is the difference between FC-TSDO-0824 and FC-TSDO-0824C?
FC-TSDO-0824 is the standard FTA. FC-TSDO-0824C is the current-limited variant (typically limited to approximately 110 mA per channel). Use the standard version unless your application specifically requires the current-limited version for hazardous-area or energy-limited circuits.
Q: Can I use this FTA with any digital output module?
No. It is designed specifically for the Honeywell / FC- safe digital output module. Using it with a different module voids the safety certification and may damage equipment.
Q: Is the FTA hot-swappable?
No. De-energize the associated module and field power before disconnecting or replacing the FTA. Live work risks damage and safety-system faults.
Q: What is the actual maximum current I can draw?
The FTA is rated 1.5 A continuous per channel, but the connected FC- module is limited to 550 mA per channel. Always design to the lower of the two ratings (550 mA).
Q: Why is new surplus pricing lower than current Honeywell list price?
These are genuine OEM FTAs that were surplus to project requirements or excess factory stock. They are unused, original, and fully functional. They carry a 1-year warranty from the seller and are inspected prior to shipment.
Q: Does the FTA provide isolation or current limiting?
The standard FC-TSDO-0824 provides the termination interface and does not add current limiting beyond what the already implements. For explicit current limiting, specify the FC-TSDO-0824C variant.
Q: What testing is performed before shipment?
Inbound visual and anti-counterfeit inspection, continuity verification of all channels, mechanical inspection of screw terminals and DIN-rail clips, and generation of a basic test report. Photos are available on request.
