Overview
Configured for non-safe dry relay output switching in Honeywell control systems, the Honeywell FC-TRO-0824 (FC-TRO-0824 Digital Output Module) provides eight electrically isolated, potential-free relay changeover contacts. Each channel supports NO/NC contact operation for discrete field circuit switching.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | FC-TRO-0824 |
| Brand | Honeywell |
| Product Type | Non-safe Dry Digital Output FTA |
| Origin | USA |
| Weight | 0.3 kg |
| Dimensions | 5.5 x 6.5 x 11.8 cm estimated shipping size |
| Nominal Input Voltage | 24 VDC |
| Maximum Input Voltage | 31 VDC |
| Relay Cut-in Voltage | 19 VDC |
| Input Current | Typically 27 mA at 24 VDC |
| Number of Output Channels | 8 |
| Output Contact Type | Potential-free relay changeover contacts |
| Contact Configuration | NO/NC |
| Maximum Output Current | 5 A |
| Maximum Output Voltage | 250 VAC / 300 VDC |
| Maximum Switched Load | 1250 VA / 150 W at 30 VDC |
| AC Voltage Rating | 250 VAC |
| Approvals | CE, UL, TUV, CSA |
| Power Consumption | Input current typically 27 mA at 24 VDC |
Honeywell Relay Output and DCS Interface
The FC-TRO-0824 provides eight non-safe relay output channels. Each channel uses a potential-free changeover contact, allowing the field circuit to use the relay contact independently of the output signal voltage.
The NO/NC configuration supports discrete circuit switching according to the connected field device. In addition, the relay interface supports up to 5 A output current and 250 VAC or 300 VDC maximum switching voltage within the stated load limits.
The 24 VDC input supply energizes the relay interface. The specified relay cut-in voltage is 19 VDC, while the maximum input voltage is 31 VDC. Therefore, installation should keep the supply within the specified electrical range.
Frequently Asked Questions
Q: How many relay output channels does the FC-TRO-0824 provide?
A: It provides 8 non-safe relay output channels with potential-free changeover contacts.
Q: What voltage and current can the relay contacts switch?
A: The specified maximum output current is 5 A. The maximum output voltage is 250 VAC or 300 VDC, subject to the stated switched-load limits.
Q: What input voltage does the FC-TRO-0824 require?
A: The nominal input voltage is 24 VDC. The specified maximum input voltage is 31 VDC, and the relay cut-in voltage is 19 VDC.
Field Installation Guidelines
Install the FC-TRO-0824 according to the applicable Honeywell system hardware documentation and cabinet wiring practices. Verify the 24 VDC supply before connecting the module.
Route relay output wiring separately from low-level analog or communication wiring where practical. Maintain appropriate physical separation between switching circuits and signal circuits to reduce electrical interference.
Connect the NO, NC, and common relay terminals according to the required field circuit state. Confirm the load voltage and current remain within the specified relay contact ratings before energizing the circuit.
For DC loads, consider the electrical characteristics of the connected load and provide appropriate suppression where required by the field circuit design. Verify terminal identification, polarity, protective bonding, and cabinet grounding before commissioning.
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