51201420-010 Honeywell Field Termination Assembly Cable

The Honeywell 51201420-010, also cataloged as the MU-KFTA10 Field Termination Assembly Cable, operates as a dedicated hardware component for field signal interconnections within Honeywell DCS platforms. It establishes point-to-point electrical continuity between field devices, termination assemblies, and I/O module assemblies.

Hardware Specifications

Channel-to-Channel Isolation & Signal Rejection

In process control networks and DCS architectures, signal isolation and noise mitigation maintain feedback loop accuracy. The Honeywell 51201420-010 FTA cable assembly utilizes shielded, low-capacitance conductor pairs engineered to prevent electromagnetic interference (EMI) from corrupting analog input/output loops and digital switching lines. Ground potential equalization across the cable assembly ensures galvanic separation between field wiring terminals and sensitive backplane electronics, preserving 4-20 mA HART signal linearity across the full 10 meters length.

Frequently Asked Questions

Q: Can this cable assembly be hot-swapped while the DCS I/O module is actively powered?

A: Passive FTA cables may be disconnected from field termination assemblies; however, signal circuits should be de-energized or put in manual loop mode prior to disconnection to prevent process field trips.

Q: How is the cable shielding grounded to avoid ground loops between field devices and the control cabinet?

A: The overall shield braid must be grounded at a single point, typically via the ground lug or chassis termination bar inside the main DCS cabinet enclosure.

Q: Does the cable support digital HART protocol pass-through along with standard 4-20 mA analog signals?

A: Yes, the cable dielectric and conductor geometry maintain frequency response specs required for bidirectional HART digital modulation over the 4-20 mA DC carrier.

Field Installation Guidelines

1. Route the FTA cable through designated low-voltage control wireways, keeping at least 200 mm clearance from high-voltage AC power distribution lines.
2. Secure strain relief brackets at both the FTA terminal block end and the I/O rack interface to prevent stress on connector pin contacts.
3. Ensure the ambient operating temperature along the cable tray path remains within the -20 to 70 deg C rating.
4. Verify that pin alignments match the keying slots on the Honeywell FTA connectors before applying insertion force.