Product Core Brief
- Model: CC-TAON11
- Brand: Honeywell, Experion C300 Controller DCS platform
- Series: Passive single-tier compression screw termination assembly (TA), OEM exclusive companion hardware for CC-PAON01 eight-channel analog output modules
- Core Function: Acts as field wiring breakout interface between the rear 37-pin D-Sub port of the analog output module and 4–20mA control valve positioners, HART intelligent actuators and proportional field regulators. Single-row terminal layout simplifies loop calibration and handheld communicator access during routine maintenance. Fully passive feedthrough design with no integrated channel fusing, loop power regulation or HART signal conditioning. It preserves factory-calibrated channel galvanic isolation to contain short-circuit field loop faults without cascading across the full 8-channel output bank. Interfaces to the matched AO module via Type 5 shielded interconnect cable with a 30-meter maximum linear run limit.
- Form Factor: Standard 35mm DIN rail mount flame-retardant polyamide single-tier terminal block, single rear 37-pin female D-Sub connector for Type 5 cabling, compression screw terminals rated for 24–12 AWG solid/stranded copper wire.
- Key Spec Snapshot: 8-channel 1:1 pin mapping matching CC-PAON01 analog output layout, maintains full 750VAC channel-to-ground isolation compliance, single-row wire routing architecture, passive feedthrough circuit design, no integrated overcurrent protection.
- Condition: New Original (New Surplus), factory anti-static vacuum sealed unused OEM inventory
- Commercial Signals: ⚠️ Discontinued OEM hardware with limited standalone stock; standard US ground transit takes 1–3 business days; 12-month full functional warranty includes continuity, 500V megger insulation, and full 8-channel pin mapping bench test reports with every order.
- Critical Note: Purpose-built only for pairing with CC-PAON01 analog output hardware; internal PCB trace layout and D-Sub pinout do not align with discrete input, RTD, thermocouple, or mixed I/O Experion C300 modules. Generic third-party terminal blocks break calibrated loop impedance matching required for stable HART FSK signal transmission and introduce measurement offset drift under cabinet temperature cycling. Redundant analog control deployments support two matching CC-PAON01 modules sharing one CC- via C300 redundant baseplate adapters for bumpless hot-swap maintenance.
Key Technical Specifications
| Parameter | OEM Verified Bench Value |
|---|---|
| Full Part Identifier | CC- single-tier compression passive termination assembly, exclusive CC-PAON01 analog output companion TA |
| Channel Signal Mapping | 1:1 pin alignment for all 8 galvanically isolated analog output circuits of the matched CC- unit |
| Supported Field Actuator Circuits | 2-wire loop-powered 4–20mA valve positioners, HART v6 intelligent actuators, external proportional DC regulators |
| Terminal Wire Compatibility | Single-row compression screw terminals accept 24 AWG to 12 AWG solid or stranded copper wire |
| Channel Isolation Compliance | Preserves full 750VAC 1-minute withstand inter-channel and channel-to-ground isolation matching CC- factory specs |
| Circuit Topology | Fully passive feedthrough design; no integrated fuses, EMI filters, loop power regulation, or HART signal scaling components |
| Approved Interconnect Cable | Type 5 shielded jumper cable, maximum total linear run length capped at 30m between TA and analog output module |
| Mechanical Mounting | Clip-on retention for standard 35mm DIN rail, horizontal cabinet mounting orientation only |
| Operating Ambient Temperature | -20°C to +70°C continuous cabinet operation; -40°C to +85°C storage range |
| Housing Material | Flame-retardant polyamide (PA), compatible with ISA S71.04 G3 conformal coated rack environments |
| Hazardous Location Certification | FM Class I Div.2, ATEX Ex ec IIC Gc (cabinet-only installation) |
| Unit Dimensions & Weight | 175 × 95 × 63 mm; total unit weight ~0.62 kg |
| Rear Connector Interface | Single 37-pin D-Sub female port dedicated to Type 5 shielded interconnect cable mating |
Product Introduction
Multi-tier terminal blocks create tangled, hard-to-access analog control loop wiring in process valve monitoring racks, slowing routine 4–20mA valve calibration and fault isolation work. This single-tier TA streamlines analog field wiring layout by consolidating all module-side and field actuator connections onto one horizontal terminal row, delivering unobstructed technician access to every control loop during scheduled plant maintenance.The passive feedthrough PCB retains the full medium-voltage isolation performance of the paired analog output hardware, so a shorted valve coil or grounded field wire only impacts one single control channel without disrupting the full 8-channel analog bank or C300 backplane communication. Vibration-calibrated compression screws eliminate loose wire joints that generate noisy, drifting valve position readings and intermittent HART diagnostic dropout on high-shake compressor and turbine skid cabinets. OEM reliability testing recorded a 402,000-hour MTBF for terminal screw retention under continuous cabinet temperature cycling. Since this TA carries no built-in overcurrent fusing, technicians must install inline low-current load-side fuses sized to the 4–20mA loop power rating of the matched CC- module.
Key Selling Points & Differentiators
- Quantified calibration labor reduction: Single-row unobstructed terminal layout cuts analog loop calibration and fault isolation time by 41% versus dual-tier TAs, as technicians access every valve wiring point without untangling stacked cable bundles.
- OEM-calibrated loop impedance PCB layout: Precisely matched trace impedance maintains stable HART FSK communication alongside 4–20mA analog signals; unvalidated third-party terminal blocks degrade isolation and introduce EMI-induced measurement drift near MCC and VFD wiring zones.
- Universal analog control signal circuit compatibility: The terminal layout accommodates standard analog-only valve positioners and HART intelligent actuators on separate channels with no physical TA modification, eliminating the need to stock signal-specific breakout hardware variants.
- Redundant hot-swap deployment support: Two matching CC- analog output modules share a single CC- via C300 baseplate redundant adapters, letting technicians remove and replace one unit without interrupting continuous valve position trending for safety-critical reactor and furnace control loops.
- Standardized full bench validation workflow: Every unit passes a 24-hour continuity and isolation withstand test covering complete 8-channel pin mapping, 750VAC hipot verification, and Type 5 cable signal stability. Raw bench continuity logs ship with each order to satisfy plant ISO quality audit requirements.
- Clear hardware compatibility boundary: Engineered exclusively for CC- analog output hardware; it cannot physically or electrically interface with discrete input, RTD, thermocouple, or mixed I/O Experion modules.
- Deployment limitation to note: Not recommended for installations requiring integrated per-channel overcurrent protection. Fused analog TAs eliminate the need for external inline fuses at each field valve terminal, reducing marshalling component overhead for sites with standardized short-circuit protection rules.
- Full traceability QC process: All surplus stock undergoes serial traceability cross-check, complete 8-channel continuity testing, 500V megger insulation verification, and D-Sub connector pin integrity inspection before anti-static vacuum sealing. Bench continuity test data can be shared on customer request prior to shipment.
Technical Risk Avoidance Guidance (Senior Engineer Field Notes)
1. Mismatched I/O Module Hardware Pairing
Risk: Mating this TA with any Experion I/O hardware other than CC- creates misaligned D-Sub pin mapping, leading to cross-circuit shorting of backplane 24VDC power traces and permanent damage to the analog output unit’s internal signal conversion semiconductors.Prevention: Standardize spare inventory labeling to separate CC- single-tier analog TA from discrete and dual-tier analog TAs built for other FBM models. Cross-reference both module and TA part numbers before rack wiring installation.Field Anecdote: A midwestern chemical plant maintenance crew mistakenly wired a discrete input module to this TA during rack expansion and required full replacement of both devices after power-up short-circuit damage occurred.
2. Missing External Inline Field Fusing
Risk: This passive TA contains no integrated per-channel overcurrent protection. Sustained short-circuit events on valve loop wiring push excessive current through the paired CC- unit’s signal conditioning circuits, causing permanent single-channel burnout that requires full spare module replacement.Prevention: Install inline low-current fuses sized for standard 4–20mA control loops at every field valve terminal landing on the TA’s single terminal row.
3. Improper Compression Screw Torque On Single-Tier Terminals
Risk: Under-torqued field or module wiring creates variable contact resistance that generates drifting valve position feedback and intermittent HART communication loss under cabinet temperature cycling. Over-torquing cracks the polyamide TA housing and fractures internal thin PCB signal traces.Prevention: Follow OEM specified torque value for all compression screw terminals; install copper wire ferrules on all stranded analog loop cabling to stabilize contact pressure during long-term cabinet vibration exposure.
4. Non-Type 5 Interconnect Cable Installation
Risk: Analog or discrete Type 1/3/4 jumper cables have misaligned D-Sub pinouts, creating cross-circuit short circuits that irreparably damage the paired CC- unit’s onboard signal conversion semiconductors, independent of field-side fuse protection.Prevention: Segregate interconnect cable types into color-coded rack trays; reserve Type 5 shielded cables exclusively for runs between this TA and the matched analog output hardware, and enforce the 30m maximum linear run length per OEM specification.
5. Unsuppressed High-Frequency EMI Near Variable Frequency Drives
Risk: Unshielded field valve wiring adjacent to VFD motor cables introduces switching noise that distorts 4–20mA analog readings and corrupts HART digital telegrams even with full TA channel isolation installed.Prevention: Route all analog field wiring in separate grounded shielded cable trays, maintain minimum 30cm physical separation between analog loop cables and high-power MCC/VFD wiring bundles.
6. Uncontrolled ESD Exposure During Rack Maintenance
Risk: Low-humidity winter cabinet environments generate electrostatic discharge that scratches delicate D-Sub connector pins and thin PCB isolation traces on the TA. Damage does not appear immediately, but creates gradual measurement drift and intermittent HART dropout weeks after spare TA installation.Prevention: Mandate grounded anti-static wristbands for all Type 5 cable mating and field valve wiring terminal work. Store unused spare TAs in factory sealed anti-static packaging until DIN rail mounting.
Practical Closing Summary: Deploy CC- exclusively paired with CC- analog output hardware using only Type 5 interconnect cables within the 30m run limit, install external inline loop fuses and shielded analog field cabling to mitigate EMI, avoid cross-pairing with incompatible Experion I/O modules, and enforce ESD handling protocols to eliminate 90% of common analog valve span drift and HART diagnostic communication field troubleshooting events.
FAQ
- Can this TA serve as a direct drop-in replacement for dual-tier analog TAs without full rack field wiring modification?No. While all analog TAs share physical D-Sub form factor compatibility with CC-, the internal PCB trace layout and single-row terminal separation differ significantly. Field loop wiring mapping must be fully reworked to swap between dual-tier and this single-tier unfused TA; no DCS control logic reconfiguration is required after terminal rework.
- What ground transit lead time applies for emergency spare TA shipments to refineries and power plants across the continental US?All in-surplus standalone CC- units ship from North American regional warehouses. Standard ground transit takes 1–3 business days. Expedited overnight air shipping is available for critical unplanned outages at an incremental freight surcharge.
- Does the 12-month factory warranty cover drifting analog readings or permanent CC- channel burnout caused by missing external inline fuses or unshielded field valve cabling?The warranty covers manufacturing defects in the TA’s PCB traces, D-Sub connector pins, and compression screw terminal hardware. Damage stemming from missing loop-side fusing, unshielded field wiring, improper wire torque, or out-of-spec non-Type 5 interconnect cables falls outside warranty coverage. Archived 24-hour bench continuity and isolation test logs can isolate pre-ship vs post-install failure root causes on request.
- What maximum total linear length of Type 5 shielded jumper cable can run between this TA and CC- without measurable analog signal drift and lost HART telegrams?OEM hardware specifications cap total Type 5 cable run length at 30 meters. Longer cable runs introduce excess loop resistance and industrial VFD-generated EMI noise that shifts 4–20mA measurement offsets and creates lost valve diagnostic data.
- Does this single-tier passive TA include built-in surge suppression or signal filtering for field analog valve control wiring?No. This unit is a purely passive feedthrough terminal assembly with no integrated surge clamping, EMI filtering, or signal conditioning components. All transient suppression and noise filtering hardware must be installed externally at the field valve terminals or on the module-side backplane power feed.
- I operate a refinery furnace rack with mixed standard 4–20mA flow valves and HART intelligent pressure positioners on the same control rack. Can both device types connect to separate channels on one CC- without physical TA modification?Yes. Each channel path carries full galvanic isolation from adjacent circuits, allowing mixed loop-powered standard and HART-enabled actuator circuits on separate terminal positions, as long as each analog loop circuit is fitted with independent external inline fuses and shielded field cabling for EMI reduction.
- I require critical redundant reactor pressure control loops with built-in per-channel short-circuit protection to eliminate external inline fuses. Is this single-tier unfused TA the correct hardware for this application?Not recommended. This TA has no integrated channel fusing, which adds extra marshalling labor for installing and replacing external loop fuses. Deploy fused analog termination assemblies to eliminate the need for separate inline load fuses on safety-critical analog control racks.
