Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | 51304650-100 |
| Manufacturer | Honeywell |
| Product Type | Field Termination Assembly (FTA) |
| Signal Type | Digital Output (DO) |
| Channel Count | 16 Channels |
| Operating Voltage | 24V DC |
| Network | UCN (Universal Control Network) |
| Mounting | Control Room / Panel Mount |
| Weight | 1.2 kg |
| Certification | UL Listed |
| Application | Experion PKS / C300 Controller Interface |
Product Introduction
HONEYWELL 51304650-100 is a Field Termination Assembly (FTA) designed for the Honeywell UCN (Universal Control Network). It provides the physical interface between the 16-channel digital output module and field devices like solenoids, relays, or indicator lights.This FTA includes integrated signal conditioning, fuse protection, and LED status indicators for each channel. With a 24VDC operating range and UL certification, it ensures safe and reliable switching in control room environments, reducing wiring errors and speeding up commissioning.
Installation & Configuration Guide
Preparation (10 min)
Confirm the HONEYWELL 51304650-100 matches your existing FTA exactly. Power down the associated C300 controller and lock out/tag out (LOTO) the 24VDC field power. Gather a 24VDC multimeter, screwdrivers, and anti-static wrist strap.Removal (5–10 min)
Label all field wires before disconnecting. Remove the FTA mounting screws and carefully pull the board from the backplane or DIN rail. Inspect the backplane connector for bent pins or corrosion.Installation (10 min)
Align the HONEYWELL 51304650-100 with the backplane guides. Apply even pressure until fully seated—do not rock or force. Reinstall mounting screws to prevent vibration loosening. Reconnect field wires per your pre-removal labels.Power-On & Test (10 min)
Restore 24VDC field power. Measure voltage at the FTA power terminals to confirm 24V DC ±10%. Force a single output channel via the control system and verify the corresponding LED illuminates and the field device activates. Repeat for at least 3 channels to confirm consistency.
Troubleshooting Quick Reference
| Symptom | Probable Cause | Action |
|---|---|---|
| No LED / No Output | 24VDC field power failure or blown fuse | Measure 24V at FTA power terminals. Check individual channel fuses. |
| LED On but No Field Action | Field device failure or wiring fault | Measure voltage at field device terminals. Check continuity to load. |
| Intermittent Output | Loose backplane connection or ESD damage | Reseat FTA firmly. Inspect pins. Replace if issue persists. |
| Multiple Channels Dead | Power supply overload or backplane fault | Check 24VDC supply capacity. Test with known-good FTA. |
| LED Dim or Flickering | Voltage drop or poor ground | Verify 24VDC under load. Check ground continuity to panel. |
Dimensions, Mounting & Wiring Notes
- Dimensions: Standard UCN FTA form factor (verify mechanical drawing for exact H×W×D)
- Mounting: Control room DIN rail or backplane slot; control room installation only
- Wiring: 24VDC field power input; individual channel outputs with fuse protection; LED indicators per channel; shielded cable recommended for long runs
FAQ
Is HONEYWELL 51304650-100 the same as 51304650-125?
Not necessarily. The suffix often indicates a revision or minor hardware change. I’ve seen them used interchangeably in some plants, but in others, the fuse rating or LED color differs. Always verify against your existing FTA’s label and system documentation before swapping.Can I use this FTA with a non-Honeywell controller?
Technically, it’s just a termination board with fuses and LEDs. But the backplane connector is proprietary to Honeywell UCN/C300 systems. If you’re adapting to another platform, you’ll need to wire directly to the terminals, bypassing the backplane. Not recommended unless absolutely necessary.I installed a new 51304650-100 and one channel won’t work. What now?
First, check the channel fuse—some FTAs have individual fuses that blow during commissioning. Measure 24VDC at the output terminal when forced. If voltage is present but the field device doesn’t activate, the problem is downstream. If no voltage, the FTA channel may be defective. Contact us for a replacement.Do you test these before shipping?
Yes. Every HONEYWELL 51304650-100 goes through our SOP: visual inspection, 24V power-on test, individual channel continuity check, and fuse verification. We generate a test report with each unit. Function is verified under test conditions, not guaranteed for life.Why is your price lower than the OEM?
We source new surplus and excess inventory directly from distributors and plant shutdowns. No middlemen, no marketing markup. You’re paying for a verified, tested FTA—not a brand name. We provide full traceability and a 12-month warranty, so the risk is minimal.What’s the return policy if it doesn’t fit?
We accept returns within 30 days if the FTA is unused and in original packaging. If we sent the wrong part, we cover return shipping. If you ordered incorrectly, you pay return freight. We’ll issue a refund or credit within 3 business days of receipt.I heard these FTAs are prone to fuse blowing. Any tips?
Yes. Always verify field device current draw before energizing. A shorted solenoid will blow the FTA fuse instantly. Use a multimeter to check load resistance first. Also, keep spare fuses on hand—they’re usually 250mA or 500mA slow-blow, but confirm from the FTA silkscreen.
