Honeywell CC-TAOX01 51308351-175 Retrofit-Ready Analog Output Module for Experion PKS C300 Control Systems
The Honeywell CC-TAOX01 (Part No. 51308351-175) is an 8-channel analog output termination assembly designed for the Experion PKS C300 Distributed Control System. As legacy DCS installations age and original spare parts become increasingly scarce, the CC-TAOX01 has emerged as a critical retrofit component for facilities managing aging control infrastructure. Whether you are executing a planned control cabinet upgrade, recovering from an unplanned module failure, or migrating from an older TDC-3000 or PlantScape platform, this module provides a verified drop-in replacement path with minimal engineering rework.
Each unit shipped by SMARTNEXMSK undergoes pre-shipment functional verification, is covered by a 12-month warranty, and is sourced from traceable industrial supply channels. Our inventory is maintained specifically to support retrofit, upgrade, and emergency replacement scenarios where lead time and compatibility certainty are non-negotiable.
Upgrade Compatibility Table
| Parameter | Detail |
|---|---|
| Module SKU | CC-TAOX01 / 51308351-175 |
| Compatible Platform | Honeywell Experion PKS — C300 Controller Series |
| Channel Count | 8-Channel Analog Output (4–20 mA) |
| Backplane Interface | IOTA (I/O Termination Assembly) — standard C300 backplane slot |
| Installation Requirement | Mounts directly to IOTA rail; no additional adapter required |
| Communication Compatibility | FTE (Fault Tolerant Ethernet) via C300 controller; no separate comm module needed |
| Replacement Recommendation | Direct replacement for failed or end-of-life CC-TAOX01 units; verify firmware revision on C300 controller before swap |
| Commissioning Focus | Channel scaling, loop calibration, HART pass-through verification (if applicable) |
| Warranty | 12 Months — covers manufacturing defects and functional failure under normal operating conditions |
| Origin | China (CN) — sourced from verified industrial supply channels |
Retrofit Planning for Existing Automation Systems
Successful integration of the CC-TAOX01 into an existing Experion PKS installation requires systematic pre-work across several engineering disciplines. Before removing the failed or obsolete module, engineers should document the current channel assignments, loop tag names, and scaling parameters stored in the Experion Configuration Studio. This data is essential for restoring the analog output configuration after the physical swap.
The CC-TAOX01 mounts to the standard IOTA backplane rail within the C300 I/O cabinet. In most retrofit scenarios, the existing IOTA rail and field wiring terminations remain undisturbed — only the termination assembly itself is replaced. However, if the cabinet also contains aging components such as the CC-PWRR01 redundant power supply module or the CC-PDOB01 digital output module, this is an appropriate time to inspect and replace those units as part of a broader cabinet refresh. Coordinating multiple module replacements during a single planned outage significantly reduces total downtime exposure.
For facilities running redundant C300 controller pairs, the CC-TAOX01 replacement can often be performed with the redundant controller maintaining process control, provided the I/O is not shared across both controllers. Confirm the redundancy configuration in Experion Station before proceeding. The CC-TCF901 FTE communication module and associated network switch infrastructure should also be verified to ensure the replacement module is recognized on the FTE network immediately upon installation.
Field wiring connected to the CC-TAOX01 termination points should be inspected for insulation integrity, terminal torque, and correct loop polarity before the new module is energized. In older installations, the CC-TAIM01 analog input module installed in adjacent slots may share the same marshalling cabinet, and any disturbance to the wiring tray should be documented. Similarly, if the control loop feeds a positioner or control valve, the downstream device should be placed in manual mode at the DCS or locally at the field junction box before the module swap begins.
Where the retrofit involves migrating from an older Honeywell TDC-3000 HPM (High-Performance Manager) platform to Experion PKS, the CC-TAOX01 serves as the analog output termination point in the new architecture. This migration typically also involves replacing the AM-HPM analog module, updating the UCN (Universal Control Network) to FTE, and reconfiguring HMI graphics in Experion Station to reflect the new tag structure. The CC-SCMB01 system cabinet module bus and associated backplane components are part of this migration scope and should be planned accordingly.
For I/O expansion projects where additional analog output capacity is required beyond the existing cabinet layout, the CC-TAOX01 can be added to available IOTA slots within the existing C300 I/O enclosure, subject to available power budget from the CC-PWRR01 supply. Always calculate the total I/O power draw before adding modules to an existing cabinet to avoid overloading the power supply rail.
Downtime Control During System Migration
Minimizing unplanned downtime is the primary operational concern when replacing analog output modules in a live DCS environment. The recommended approach is to schedule the CC-TAOX01 swap during a planned maintenance window, with all affected control loops placed in manual mode at the DCS operator station prior to the physical work beginning. This preserves the last known output value at the field device and prevents process upsets caused by the module losing power during removal.
Before the outage window opens, the replacement CC-TAOX01 should be bench-tested where possible — verifying that the module powers up correctly and that the IOTA connector pins are undamaged. Having the Experion Configuration Studio open on a maintenance laptop connected to the FTE network allows the engineer to confirm that the new module is recognized by the C300 controller within seconds of installation, without requiring a controller restart.
Original program logic stored in the C300 controller is not affected by an IOTA module swap — the control strategy, PID parameters, and interlock logic remain intact in the controller memory. This is a key advantage of the Experion PKS architecture: field I/O modules can be replaced without modifying or redownloading the control database, provided the replacement module is of the same type and is installed in the same slot address. After installation, the engineer should verify each channel output by commanding a known value from the operator station and confirming the corresponding milliamp signal at the field terminal using a calibrated loop calibrator.
For facilities without a redundant C300 controller, the total downtime for a single CC-TAOX01 replacement — including loop isolation, physical swap, module recognition, and loop verification — typically ranges from 30 to 90 minutes depending on the number of active channels and the complexity of the downstream field devices. Pre-staging all tools, documentation, and the replacement module before the outage window begins is the single most effective way to compress this timeline.
Retrofit Support FAQ
Q1: Is the CC-TAOX01 51308351-175 a direct drop-in replacement for my existing unit?
Yes. The CC-TAOX01 51308351-175 is designed as a direct replacement for the same part number installed in Experion PKS C300 systems. The IOTA connector, channel count, and signal range (4–20 mA) are identical. No wiring changes or configuration modifications are required in most standard installations. We recommend verifying the C300 controller firmware revision is compatible with the module revision before installation.
Q2: What commissioning steps are required after installing the replacement module?
After physical installation, confirm the module appears online in Experion Configuration Studio. Place each affected loop in manual mode, command a mid-scale output (e.g., 12 mA), and verify the signal at the field terminal with a loop calibrator. Check HART communication pass-through if the downstream device is HART-enabled. Return loops to automatic mode sequentially, monitoring process response for each channel before proceeding to the next.
Q3: Can this module be used to replace analog output capacity from a legacy TDC-3000 HPM migration?
Yes, in the context of a full platform migration from TDC-3000 to Experion PKS. The CC-TAOX01 serves as the analog output termination assembly in the new C300-based architecture. The migration also requires reconfiguring the control strategy in Experion Configuration Studio, updating HMI graphics in Experion Station, and verifying FTE network connectivity. SMARTNEXMSK can supply additional C300-compatible modules required for the migration scope.
Q4: What does the 12-month warranty cover, and what is the process for a warranty claim?
The 12-month warranty covers manufacturing defects and functional failure under normal industrial operating conditions. It does not cover damage caused by incorrect installation, overvoltage, or physical mishandling. To initiate a warranty claim, contact SMARTNEXMSK at [email protected] with the order reference, module serial number, and a description of the failure symptom. Replacement units are dispatched after fault confirmation, with return shipping of the defective unit required.
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