Honeywell CC-TAON01 Retrofit-Ready AO Module for Experion PKS

Honeywell CC-TAON01 Retrofit-Ready AO Module for Experion PKS

The Honeywell CC-TAON01 (Part No. 51306519-175) is a high-reliability analog output module designed for the Experion PKS distributed control system. As legacy DCS installations age and original modules reach end-of-life, the CC-TAON01 remains one of the most sought-after retrofit components for process engineers managing continuous operations in refining, petrochemical, power generation, and advanced manufacturing environments. Whether you are replacing a failed unit under emergency conditions or executing a planned control system upgrade, this module delivers the electrical and functional compatibility required to restore full system operation with minimal downtime.

The CC-TAON01 provides 4–20 mA analog output channels that interface directly with field instruments including control valves, variable frequency drives, and positioners. Its design conforms to the C300 controller architecture within the Experion PKS platform, ensuring seamless integration with existing I/O link backplanes and FIM (Field Interface Module) assemblies. Engineers migrating from earlier Honeywell TDC 3000 or PlantScape systems will find the CC-TAON01 a critical bridge component that preserves existing field wiring while enabling a forward-compatible control architecture.

Upgrade Compatibility Table

Retrofit Planning for Existing Automation Systems

Successful retrofit of the CC-TAON01 into an existing Experion PKS installation requires a structured review of the surrounding control cabinet components. Before removing the failed module, maintenance engineers should document the current channel assignments and verify that the associated IOTA terminal assembly — typically the CC-TAON11 or CC-TAON21 IOTA — is undamaged and properly seated. The IOTA provides the physical field wiring termination, and any corrosion or loose terminal screws at this level will cause output signal errors even after the module is replaced.

Power integrity is the next critical checkpoint. The CC-TAON01 draws its operating power from the backplane 24 VDC bus, so engineers should confirm that the associated power supply module — such as the CC-PWR01 or CC-PWR02 — is delivering stable voltage within specification. A degraded power supply is a common root cause of intermittent AO module faults and should be tested before the new module is commissioned.

For sites running HART-enabled field devices, verify that the HART pass-through configuration in the Experion PKS Control Builder is correctly mapped to the new module’s channel addresses. If the site uses a HART multiplexer or an asset management system such as Honeywell Field Device Manager, re-scan the device list after module replacement to confirm all HART device descriptors are correctly recognized.

During cabinet-level inspection, it is also advisable to check adjacent modules in the same I/O chassis. Components such as the CC-PAIN01 analog input module, CC-PDOB01 digital output module, and CC-PDIL01 digital input module share the same backplane bus and can exhibit communication errors if the I/O link is disrupted during module swap. Inspect the backplane connectors for bent pins or contamination before reinserting the replacement CC-TAON01.

For systems that include a redundant C300 controller pair, confirm that the controller failover logic is suspended or placed in manual mode during the module replacement window to prevent spurious switchover events. After the new module is seated and the I/O link re-established, perform a channel-by-channel loop check against the field instruments to verify 4–20 mA output accuracy before returning the loop to automatic control. Sites with Honeywell Safety Manager integration should also verify that any SIL-rated output loops connected through the CC-TAON01 are re-validated per the site’s functional safety management plan.

Downtime Control During System Migration

Minimizing unplanned downtime during a CC-TAON01 replacement requires preparation before the maintenance window opens. The most effective approach is to pre-configure the replacement module offline using a spare Experion PKS engineering station and a test rack. Load the existing I/O configuration file exported from Control Builder, assign the correct module address, and verify that all channel parameters — including engineering units, output limits, and HART enable flags — match the production configuration. This pre-staging step eliminates the need for live configuration editing on the plant floor and reduces the active replacement window to a physical swap and loop verification sequence.

For sites without a spare test rack, the hot-swap capability of the CC-TAON01 within the Experion PKS chassis allows the module to be replaced without powering down the entire I/O cabinet. However, all output channels should be placed in manual hold at the DCS operator station before the swap to prevent uncontrolled valve movement during the brief I/O link re-initialization period. After the module is reseated and the system detects the new hardware, release channels to automatic control one at a time, confirming stable output at each step.

For legacy migrations from TDC 3000 or PlantScape platforms, the field wiring termination strategy is the primary factor controlling downtime duration. Where existing multi-pair cables terminate on marshalling panels, a pre-wired IOTA assembly can be installed in parallel with the old termination block, allowing a rapid cutover without re-pulling field cables. This approach is particularly effective in large-scale migrations involving multiple CC-TAON01 modules across several I/O cabinets, where cumulative wiring time would otherwise extend the outage window significantly.

Retrofit Support FAQ

Q1: Is the CC-TAON01 51306519-175 a direct replacement for all CC-TAON01 variants?
The 51306519-175 is the standard production revision of the CC-TAON01 and is compatible with all standard Experion PKS C300 I/O chassis configurations. However, customers should verify the IOTA terminal assembly model (CC-TAON11 for non-redundant or CC-TAON21 for redundant field termination) to ensure the correct pairing. If your site uses a different IOTA variant, contact our technical team before ordering.

Q2: What pre-shipment testing is performed on this module?
Every CC-TAON01 unit is powered up and functionally tested prior to shipment. Output channel accuracy, I/O link communication, and HART signal integrity are verified against Honeywell factory specifications. A test report is available upon request. All units are shipped with ESD-protective packaging and include a 12-month warranty from the date of shipment.

Q3: Can this module be used in a HART-enabled loop without additional configuration?
Yes, provided the Experion PKS Control Builder configuration for the target channel has HART enabled. The CC-TAON01 supports HART pass-through natively. No additional hardware is required. If the site uses a dedicated HART interface module or multiplexer, verify that the HART polling address assigned to the field device does not conflict with existing device addresses on the same segment.

Q4: What is the lead time and warranty coverage?
In-stock units ship within 1–3 business days. All modules carry a 12-month warranty covering manufacturing defects and functional failures under normal operating conditions. Expedited shipping is available for emergency breakdown situations. Contact sales@smartnexmsk.com or call +86 18259474341 for urgent requirements.

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