The Honeywell CC-TAOX51 (associated with PWB 51307078-100 and module CC-PAOH51) functions as a high-precision 8-channel Analog Output (AO) module with integrated HART communication capabilities. This 100% brand-new, original unit converts digital control commands from the Experion PKS C300 controller into stable analog signals to drive critical field equipment. By supporting the HART protocol, the CC-TAOX51 allows the DCS to transmit primary variables while simultaneously managing intelligent device configurations and diagnostic data for final control elements like control valves and variable speed drives.
The CC-TAOX51 utilizes a compact, vertically oriented Series C form factor to maximize cabinet efficiency and thermal performance.
| Attribute | Technical Detail |
| Model Number | CC-TAOX51 |
| PWB Part Number | 51307078-100 |
| Revision | Rev A |
| Number of Channels | 8 Analog Output Channels |
| Signal Types | 4–20 mA Current, 1–5 V Voltage |
| Resolution | 12 to 16-bit D/A Conversion |
| Communication Protocol | Integrated HART Digital Passthrough |
| Isolation | Channel-to-channel and channel-to-system |
| Dimensions | 2.2 cm x 12.4 cm x 12.6 cm |
| Weight | 0.1 kg (Module only) |
| Operating Temperature | 0 °C to +55 °C |
The Honeywell CC-TAOX51 facilitates advanced field device management and stabilizes complex process loops through several engineering innovations:
Bidirectional HART Integration: The module overlays digital communication onto the 4-20 mA analog signal. Consequently, engineers can calibrate smart positioners, perform partial stroke tests (PST) on safety valves, and monitor device internal temperatures directly from the control room.
Superior Signal Stability: High-resolution digital-to-analog conversion ensures that field actuators receive smooth, jitter-free signals. This precision prevents hunting in sensitive control valves, extending the mechanical life of valve packing and actuators.
Comprehensive Fault Diagnostics: The CC-TAOX51 actively monitors the integrity of the output loop. It detects open-circuit conditions (wire breaks) and short-circuits instantly, providing immediate feedback to the operator and preventing "blind" control attempts during field wiring failures.
Optimized Thermal Footprint: The Series C architecture promotes vertical airflow across the 51307078-100 PWB. This design keeps internal components within optimal temperature ranges even in high-density I/O cabinets, significantly increasing the Mean Time Between Failures (MTBF) in 24/7 continuous operations.
Does the CC-TAOX51 support redundant configurations?
Yes. When you pair two CC-TAOX51 modules on a redundant I/O Termination Assembly (IOTA), the system supports bumpless switchover. This ensures that a single module failure does not disrupt the output signal to critical field devices.
Is this module compatible with both Experion PKS and older TDC 3000 systems?
The CC-TAOX51 is specifically a Series C module designed for the Experion PKS platform. While it performs functions similar to legacy TDC 3000 AO modules, it requires a Series C IOTA and a C300 or similar controller.
What specific field devices can this module control?
The CC-TAOX51 drives any standard 4-20 mA or 1-5 V device, including I/P transducers, control valve positioners, variable frequency drive (VFD) speed references, and analog indicators.
What is the significance of the Revision A and PWB 51307078-100 markings?
These identifiers confirm the hardware build and board version. Rev A indicates the initial high-performance design, while the PWB number ensures you are receiving the correct internal circuitry for the CC-TAOX51 8-channel HART AO specification.
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