Honeywell 51401246-200 Rack FTA Mounting Channe

The Honeywell 51401246-200, also cataloged as the 51401246-200 Rack FTA Mounting Channel, operates as a dedicated hardware component for Field Termination Assembly (FTA) mechanical securing and panel containment within narrow Rittal enclosure structures. The assembly provides direct physical mounting execution for field wiring transition interfaces across Honeywell TDC 3000 and Experion PKS cabinets.

Hardware Specifications

Process Control and DCS System Integration Features

• 4-20 mA HART Loop Cable Channeling: Standardized vertical channel structure routes high-density field signal cables, providing organized pathways for 4-20 mA HART analog I/O loops entering Field Termination Assemblies.
• Channel-to-Channel Electrical Isolation Support: Non-conductive isolation standoffs and precise mounting hole spacing prevent accidental metallic contact between adjacent FTA boards, eliminating potential ground loops across field channels.
• Cold Junction Compensation Thermal Shielding: Maintains stable structural alignment for temperature terminal blocks, reducing localized airflow turbulence near cold junction compensation nodes on thermocouple FTAs.

Frequently Asked Questions

Q: Does the 51401246-200 mounting channel require electrical power or grounding connections?

A: As a passive structural channel, it consumes no electrical power. However, the metal frame must be bonded directly to the cabinet earth ground bus bar via a dedicated ground strap to ensure electrostatic discharge protection.

Q: Can FTAs be mounted or replaced on this channel while adjacent field loops are active?

A: Physical mounting of FTAs onto the channel can be performed without de-energizing adjacent non-hazardous loops, provided field wiring terminals remain protected from mechanical shorting or tool contact.

Q: What mounting hardware is required to secure the channel into a narrow Rittal cabinet frame?

A: The channel utilizes standard Rittal cabinet captive nuts and M6 thread fasteners to lock directly onto vertical DIN/Rittal enclosure frame rails.

Field Installation Guidelines

1. Rittal Frame Alignment: Position the 51401246-200 mounting channel against the vertical structural rails of the narrow Rittal cabinet. Ensure correct vertical height alignment with adjacent wireways.
2. Fastener Torquing: Insert M6 mounting screws through the pre-drilled channel slots into the cabinet frame captive nuts. Tighten fasteners evenly to 4.5 Nm to prevent frame flex under heavy field cable loads.
3. Chassis Bonding: Connect a braided copper grounding strap from the channel grounding stud directly to the main enclosure earth ground bar to establish equipotential bonding.
4. FTA Installation and Clearance: Snap or fasten Field Termination Assemblies (FTAs) onto the mounting channel tracks. Verify that field wiring trunks maintain a minimum 50 mm clearance from high-voltage AC distribution lines.