Honeywell FC-TSRO-0824 Digital Output Field Termination Assembly

Product Overview

The Honeywell FC-TSRO-0824 is a Safe Relay Output Field Termination Assembly (FTA) providing 8 channels of relay output for Honeywell Safety Manager systems. This FTA provides galvanically isolated relay contacts for controlling devices that require relay interfacing, such as motor contactors, large solenoid valves, or equipment with incompatible voltage levels. The relay outputs ensure complete electrical isolation between the safety system and field equipment.

Key Features

• 8 Relay Output Channels: Isolated relay contacts for flexible interfacing
• Galvanic Isolation: Complete electrical separation between system and field
• Form C Contacts: SPDT (Single Pole Double Throw) contacts for flexible wiring
• High Current Capacity: Relay contacts rated for higher currents than transistor outputs
• System Interconnection: SIC cable interface to SRO-0824 I/O modules
• DIN Rail Mounting: Universal snap-in for TS32/TS35 rails

Technical Specifications

• Model: FC-TSRO-0824
• Type: Safe Relay Output FTA
• Channels: 8 relay outputs
• Contact Type: SPDT (Form C)
• Contact Rating: Refer to system documentation (typically 2-5 A at 250 VAC/VDC)
• Isolation: Galvanic isolation between coil and contacts
• Switching: Dry contact, no voltage supplied
• Dimensions: 60 × 70 × 58 mm (L × W × H) (typical)
• DIN Rail: TS32 / TS35 × 7.5
• Wire Size: Max 2.5 mm² (AWG 14)
• Tightening Torque: 0.5 Nm (0.37 ft-lb)
• Operating Temperature: -40°C to +70°C
• Approvals: CE, TÜV, UL, CSA, FM

Installation Guide

1. DIN Rail Mount: Snap FTA onto TS32/TS35 rail
2. Load Wiring: Connect field loads to relay contacts (NO, NC, Common)
3. Power Supply: Note: Relay contacts are dry—external power must be supplied to the load circuit
4. Inductive Loads: Install snubbers or flyback diodes for inductive load protection
5. SIC Cable: Connect to SRO-0824 relay output module via SIC cable
6. Contact Verification: Test each relay for proper NO/NC operation

FAQ

Q: What is the difference between relay outputs and transistor outputs?
A> Relay outputs provide galvanic isolation and can switch AC or DC loads at various voltages. Transistor outputs (e.g., TSDO-0824) are faster but limited to DC and specific voltage ranges without isolation.

Q: Can relay outputs switch AC loads?
A> Yes, relay contacts are voltage-agnostic and can switch both AC and DC loads within their contact rating.

Q: What is the relay contact life?
A> Relay life depends on load type (resistive vs. inductive) and switching frequency. Typical mechanical life is 10 million operations; electrical life varies by load. Refer to manufacturer specifications.

Q: Do relay outputs provide power to the load?
A> No. Relay contacts are dry switches. The load power supply must be wired separately through the relay contacts.

Selection Tips

• Use relay outputs when galvanic isolation is required between safety system and field equipment
• Verify contact rating (voltage and current) against load requirements
• For AC loads or mixed voltage applications, relay outputs are preferred over transistor outputs
• Consider relay life expectancy for high-cycle applications; solid-state relays may be preferred for frequent switching
• Ensure paired I/O module is SRO-0824 installed in the chassis