Description
Product Description
The Honeywell FTA-T-08 is a fail-safe digital output module engineered for the FSC (Fail-Safe Control) system, providing secure relay outputs with redundancy and built-in protection. Each of the four channels features dual relays from different manufacturers, fused normally open contacts, and LED status indicators, ensuring safe operation for alarms, actuators, and other critical field devices. The module is designed for harsh industrial environments and meets global safety certifications including CE, TÜV, and UL.
Technical Specifications
| Specification |
Details |
| Nominal Input Voltage |
24 VDC |
| Maximum Input Voltage |
31 VDC |
| Relay Cut-in Voltage |
19 VDC |
| Input Current |
Typically 50 mA at 24 VDC |
| Output Channels |
4 relay outputs |
| Output Voltage Rating |
250 VAC / 110 VDC |
| Maximum Output Current |
3.15 A per channel |
| Minimum Load Current |
~400 mA at 24 VDC |
| Fuse Protection |
3.15 A slow-blow fuse per channel |
| Contact Type |
Normally Open (NO), dual relays per channel |
| Status Indication |
LED for each channel |
| Max Switched Load |
1250 VA / 150 W |
| Max Switched Voltage |
250 VAC / 150 VDC |
| Max Switched Current |
5 A |
| Max Switching Frequency |
20 Hz |
| Expected Life |
Electrical: 80,000 ops; Mechanical: 5,000,000 ops |
| Ambient Temperature |
–40°C to +60°C (–40°F to +140°F) |
| Contact Material |
Silver alloy |
| Mounting |
DIN EN rail snap-in with screw terminals |
| Termination Type |
T10 |
Key Features & Advantages
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Fail-Safe Operation: Each output automatically reverts to a safe state in case of fault or power loss.
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Dual-Relay Redundancy: Two relays per channel ensure high reliability for safety-critical applications.
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Status Monitoring: LED indicators provide real-time channel feedback for easy diagnostics.
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Robust Protection: Built-in fuses, reverse polarity protection, and RFI filtering safeguard the module and connected devices.
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Versatile Load Support: Compatible with AC and DC devices such as solenoids, alarms, and actuators.
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Industrial-Grade Durability: Wide operating temperature range and silver alloy contacts for long-term reliability.
Applications
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Fail-safe outputs in oil & gas, petrochemical, and power generation plants
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Safety-critical actuators and alarm control
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Redundant relay control in FSC safety systems
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Industrial automation requiring high-reliability relay outputs
FAQ
Q: How many channels does the FTA-T-08 support?
A: It provides 4 independent relay output channels with dual-relay redundancy per channel.
Q: What types of loads can it drive?
A: It can handle AC loads up to 250V/5A or DC loads up to 110V/3.15A per channel.
Q: Does it include protection features?
A: Yes, each channel has a slow-blow fuse, RFI filtering, and LED indicators for status monitoring.
Q: What is the expected operational life?
A: Electrical life is 80,000 switch operations; mechanical life is 5,000,000 operations.
