Description
Product Introduction
The Honeywell CC-TAON11 is an isolated Input/Output Termination Assembly (IOTA) engineered for Honeywell Experion PKS Series C systems. It serves as the physical backbone and marshalling interface for 8-channel high-level analog output modules (such as the CC-PAOH01), routing control signals to final actuators while maintaining strict channel-to-channel galvanic separation.
Unlike non-isolated bases, the CC-TAON11 incorporates onboard optical and electrical isolation barriers designed to protect output loops from common-mode voltage transients and ground faults. In plant operations, replacing a heat-damaged or corrosion-compromised termination base with a verified CC-TAIN11 restores signal integrity and loop actuation continuity without requiring full cabinet rewiring.
Key Technical Specifications
| Parameter | Specification / Value |
| Model Number | CC-TAON11 |
| Honeywell Part Number | 51405031-275 |
| Assembly Type | Isolated Analog Output Termination Assembly (IOTA) |
| Compatible Modules | Series C 8-Channel Analog Output Modules (e.g., CC-PAOH01) |
| Terminal Type | Removable screw terminal blocks for final control elements |
| Channel Capacity | 8 Isolated Channels |
| Isolation Rating | 1500 V DC channel-to-channel / channel-to-bus isolation |
| Mounting Hardware | Standard DIN rail mounting or direct panel mount |
| Conformal Coating | Standard G1 / Optional G3 Harsh Environment protection |
| Enclosure Rating | Open-type open-frame backplane assembly (IP20 terminal protection) |
Application Scenarios & The “Trench” Experience
It is 2:15 AM at a Gulf Coast petrochemical facility, and a critical control valve on a high-temperature reactor feed line starts hunting uncontrollably because an intermittent ground loop has degraded the isolation traces on the underlying analog output termination base. Swapping out the compromised base with a pre-tested surplus CC-TAON11 base restores clean signal isolation, bringing the reaction train back under stable closed-loop control before the morning shift handover.
- Chemical Processing: Centralized terminal marshalling for isolated control valves and positioning actuators across aggressive reaction units.
- Oil & Gas Refining: Final control element wiring management in high-EMI areas where channel isolation prevents common-mode signal interference.
- Power Generation: Critical boiler feedwater and turbine steam valve control loops requiring robust surge and isolation boundaries.
- Water & Wastewater Treatment: Remote pump station and chemical dosing valve loop aggregation in high-humidity environments.
CC-TAON11
CC-TAON11
Transparency SOP: Quality Assurance & Testing
We don’t just ship boxes; we inspect and test every termination assembly to ensure zero physical or electrical defects.
- Inbound Visual Inspection: We examine terminal blocks under magnification for stripped screw threads, corrosion, hairline PCB cracks, and intact OEM holograms.
- Backplane Pin Integrity Check: Connector pins and guide headers are measured and aligned to verify zero bending or oxidation prior to dispatch.
- Isolation & Trace Testing: Automated probe testing verifies trace resistance and 1500V isolation integrity across all 8 channel output paths and power distribution buses.
- Terminal Clamp Torque Verification: Screw clamp assemblies are stress-tested to ensure reliable wire retention under high-vibration industrial conditions.
- Anti-Static & Protective Packaging: Inspected assemblies are wrapped in heavy-duty ESD shielding and high-density foam to prevent shipping damage.
The Veteran’s Tech Trap Guide
⚠️ Watch Out for Terminal Screw Over-Torquing
When landing field control wires onto the CC-TAON11, do not overtighten the terminal screws. Excessive torque will strip the brass inserts or crack the molded plastic housing, forcing an unplanned base replacement. Use a calibrated torque driver.
❗ Verify Loop Sinking and Sourcing Jumper Settings
Before snapping the electronic module onto the new IOTA, double-check your power distribution and loop supply jumper configurations on the terminal board. Misconfigured jumpers will short out your 24VDC loop supply or prevent proper valve actuation.
⚠️ Isolate Power Before Replacing an IOTA
Never attempt to replace or service a termination assembly while field loop power or module bus power is energized. Always execute proper lockout/tagout (LOTO) protocols to protect against short circuits on live output rails.
Frequently Asked Questions
Q: Is the CC-TAON11 a standalone module or a base assembly?
A: The CC-TAON11 is an Input/Output Termination Assembly (IOTA)—the physical base and terminal block unit that mounts to the cabinet panel. The active electronic output card plugs directly into it.
Q: Can I replace the CC-TAON11 without disconnecting field wiring?
A: Series C IOTAs feature modular terminal blocks that can be unclipped from the base assembly, allowing you to swap the core termination board without completely relabeling and re-terminating every individual field wire.
Q: Are these termination assemblies brand new or surplus?
A: We stock both Factory Sealed New Surplus and fully inspected Refurbished units, ensuring you receive immaculate hardware ready for immediate installation.
Q: Why buy surplus instead of ordering direct from the OEM?
A: Extended OEM delivery lead times for legacy Series C hardware can leave your plant waiting months for spares. Our ready-to-ship surplus inventory gets your hardware on-site immediately at a fraction of the cost.
Q: What warranty comes with this purchase?
A: Every CC-TAON11 assembly is backed by our comprehensive 12-month operational warranty, protecting your plant investment against unexpected hardware failures.
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