Description
Honeywell FC-TSDO-0824 | 8-Channel Safe Digital Output FTA
Dynamic Product Introduction
When a Safety Manager output channel has to reach a real field load, the FTA is the physical transition point between the system interconnection cable and field wiring. FC-TSDO-0824 provides that transition for eight safe digital output channels through screw terminals and a DIN-rail mounting arrangement.
The assembly is designed for the SDO-0824 safe digital output module. Honeywell documents the TSDO-0824 as an interface between SICC-0001/Lx and external field wiring. It can also be used with a redundant pair of SDO-0824 modules through the appropriate system interconnection arrangement.
Do not read the 1.5 A figure as the output capability of the complete safety-output channel. That is the FTA’s maximum continuous current specification. The actual permissible output current is governed by the connected SDO-0824 and the load/temperature conditions of the complete system. The SDO-0824 itself is specified as an 8-channel, 24 VDC solid-state source with a maximum channel current of 550 mA.
FC-TSDO-0824
Key Technical Specifications
- Manufacturer: Honeywell
- Model: FC-TSDO-0824
- Product Type: Safe Digital Output Field Termination Assembly
- System: Honeywell Safety Manager
- Number of Channels: 8
- Application: 24 VDC safe digital output
- Compatible Output Module: SDO-0824
- Maximum FTA Voltage: 36 VDC
- Maximum Continuous Current: 1.5 A per channel
- Module Dimensions: 60 × 70 × 58 mm
- DIN Rail: TS32 / TS35 × 7.5
- Used Rail Length: 61 mm
- Field Termination: Screw terminals
- Maximum Wire Diameter: 2.5 mm² / AWG 14
- Strip Length: 7 mm
- Terminal Tightening Torque: 0.5 Nm
- Approvals: CE, TÜV, UL, CSA, FM
- Coating: Conformal-coated FC version
Honeywell’s hardware reference gives the 60 × 70 × 58 mm mechanical dimensions, 36 VDC maximum voltage, 1.5 A maximum continuous current per channel, 61 mm rail usage, and 2.5 mm² maximum conductor size.
Honeywell’s type-number convention identifies FC products as conformal-coated, while FS denotes non-conformal-coated versions. Therefore, FC-TSDO-0824 should not automatically be treated as interchangeable with FS-TSDO-0824 when environmental or coating requirements matter.
System Architecture and Compatibility
The FC- belongs in the output path as the field interface:
Safety Manager → SDO-0824 → SICC-0001/Lx → FC- → field load
For a redundant output arrangement, Honeywell documents that the eight channels of a redundant pair of modules can be connected to the through the system interconnection cable.
The FTA therefore should not be purchased by matching only:
- channel count,
- physical size,
- terminal appearance, or
- “24 VDC output” terminology.
The associated I/O module and system interconnection cable are part of the compatibility check.
Honeywell’s FTA compatibility documentation specifically maps:
and separately identifies TSDO-0824C → . These should not be treated as arbitrary substitutes.
Global Sourcing & Live-Test SOP
Inbound Verification
Before accepting an FC- into safety-system inventory:
- Confirm the exact front marking: .
- Verify the Honeywell identification label and hardware/revision information.
- Confirm that the unit is the FC conformal-coated version.
- Inspect screw terminals for bent hardware, stripped threads, oxidation, or mechanical damage.
- Inspect the SICC connector for damaged or recessed contacts.
- Confirm that the enclosure and mounting clip are intact.
- Check the physical dimensions against the expected 60 × 70 × 58 mm configuration.
Do not approve an item merely because a seller describes it as “.” and FC- are different hardware positions in the system.
Live Simulation
A meaningful functional test requires the appropriate Safety Manager test arrangement, including a compatible output module and system interconnection cable.
The test should verify:
- Correct channel mapping from to FTA terminals.
- Correct 24 VDC output path.
- Output polarity.
- Continuity through the termination assembly.
- Correct response of the connected load or suitable test load.
- Correct operation in the intended redundant/non-redundant architecture.
Do not use a generic PLC output card as a substitute test source and then claim the FC- has passed a Safety Manager functional test.
Load and Diagnostic Verification
Where the complete assembly is available, verify the output channels under an appropriate representative load.
The associated has eight 24 VDC solid-state output channels and includes diagnostic functions involving de-energization capability, secondary group de-energization, output crosstalk, and suppression-diode operation. Those diagnostics belong to the output module, not to the FC- terminal assembly itself.
Final Preparation
Record:
- Exact model:
- Hardware/revision marking
- FC coating identification
- Associated model/revision used during test
- SICC cable configuration
- Channels tested
- Load/test conditions
- Final visual inspection result
Package the assembly with terminal protection and ESD precautions. Protect the connector and screw-terminal area from impact during shipment.
Field Engineer’s Pitfall Guide
❗ Do not confuse FC- with .
This is the most important mistake to avoid.
FC- = field termination assembly.
= safe digital output module.
The FTA provides the physical field interface; the provides the actual safe output processing and solid-state output function. Honeywell’s documentation explicitly lists as the FTA paired with .
❗ Do not use the 1.5 A FTA rating as the load specification.
The FTA is rated for a maximum continuous current of 1.5 A per channel, but that does not mean the complete Safety Manager output can continuously drive a 1.5 A load.
The associated is specified at 550 mA maximum per output channel, with load derating at elevated ambient temperatures.
❗ Do not substitute FC and FS versions without checking the environmental requirement.
Honeywell defines FC as conformal-coated and FS as non-conformal-coated. If the original system specification calls for the FC version, an FS- should not be treated as an automatic replacement simply because the terminal layout appears identical.
Intent-Driven FAQ
What is Honeywell FC-?
It is a Safe Digital Output Field Termination Assembly for the Honeywell Safety Manager system. It provides the field-wiring interface for eight 24 VDC safe digital output channels.
Is FC- the same as ?
No. FC- is the FTA; is the safe digital output module. Honeywell specifically lists them as a compatible FTA/I/O-module combination.
How many channels does FC- have?
It has 8 output channels.
What voltage is FC- designed for?
The FTA is specified for the 24 VDC safe digital output application and has a listed maximum voltage of 36 VDC. The actual field output capability is determined by the connected module.
What is the maximum current rating?
Honeywell specifies 1.5 A continuous per channel for the FTA. This should not be confused with the output-channel rating, which is 550 mA maximum.
What is the difference between FC- and FS-?
The important distinction is the coating. FC denotes conformal-coated hardware; FS denotes non-conformal-coated hardware. Verify the original system requirement before substituting one for the other.
What DIN rail does FC- use?
It is designed for TS32 / TS35 × 7.5 DIN EN rails and uses approximately 61 mm of rail length.
Can FC- be tested by itself?
Not in a meaningful functional sense. It is an interface assembly. A proper test requires the compatible Safety Manager output hardware and system interconnection arrangement. Continuity and mechanical inspection can be performed independently, but functional output verification belongs to the complete SDO/FTA signal path.
