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Key Technical Specifications
| Parameter | Specification |
| Manufacturer | Honeywell |
| Model Code | 8C-PAON01 |
| Part Number | 51454357-175 |
| System Compatibility | Honeywell Experion PKS (C300 Controller Platform) |
| Module Type | Analog Output with HART (Coated) |
| Output Channels | 8 Individually Isolated Channels |
| Output Signal Range | 4 to 20 mA (Configurable sub-ranges) |
| Digital Protocol | HART Protocol (Revision 5/6/7 field device pass-through) |
| Output Accuracy | ±0.1% of full scale at 25°C |
| Load Resistance | 0 to 600 Ω at 24 VDC loop power |
| Environmental Protection | Conformal Coating (G3 harsh environment rated) |
| Mounting Format | Direct mounting on Series C Input/Output Termination Assembly (IOTA) |
| Operating Temperature | 0°C to +60°C |
Product Introduction & Supply Chain Strategy
The Honeywell 8C-PAON01 (51454357-175) is an 8-channel analog output module engineered for Honeywell Experion PKS C300 control systems. Installed on a Series C Input/Output Termination Assembly (IOTA), it converts digital control algorithm demands into 4-20mA analog current signals to drive control valves, variable speed drives, and actuators, while enabling bi-directional HART asset management pass-through.
In continuous process facilities like oil refineries and chemical plants, an analog output card failure freezes critical valve positioners and can force an emergency plant trip. Sourcing refurbished DCS modules presents severe operational risks, including degraded internal optocouplers, compromised conformal coating, and latent digital-to-analog converter drift. Maintaining a genuine New Surplus 8C-PAON01 module in your local warehouse guarantees factory-fresh component integrity, zero field runtime, and immediate restoration of control loops.
Installation & Configuration Guide
1.Stage 1: Pre-Installation (Prep & Safety):LOTO & Safety Prep.
- Obtain work permits and confirm loop safety conditions before opening field control cabinets.
- Wear a grounded ESD wrist strap before handling the replacement module.
- Inspect the 8C-PAON01 module edge connectors and conformal coating for transit damage.
- Verify the target Series C IOTA slot number inside Experion Control Builder software.
2.Stage 2: Removal:Module Removal.
- Loosen the top and bottom captive mounting screws on the existing module faceplate.
- Gently tilt the module outward and pull it straight away from the IOTA backplane connectors.
- Inspect the IOTA pin array for contamination, bent pins, or physical damage.
3.Stage 3: Installation (Clone & Seat):Seating & Hardware Insertion.
- Align the 8C-PAON01 guide channels with the designated IOTA slot tracks.
- Press the module firmly onto the IOTA connectors until the backplane pins seat completely.
- Hand-tighten the top and bottom captive retaining screws to secure the chassis connection.
4.Stage 4: Power-On & Testing:System Loop Verification.
- Monitor the module status LEDs during initial power-up; confirm the yellow state transitions to solid green (OK).
- Check Experion Station hardware displays to ensure the module reports healthy communication without I/O channel alarms.
- Execute a manual 4-20mA current loop test (stroke test at 0%, 50%, and 100%) from Control Builder to verify field valve response.
8C-PAON01
Firmware/Software Versions & Upgrade Notes
- Software Platform: Fully supported across Honeywell Experion PKS releases (R300 through R520+).
- Firmware Auto-Mload: When inserted onto an active Series C IOTA, the C300 controller automatically checks the module’s firmware build. If configured in Control Builder, the C300 updates the 8C-PAON01 firmware automatically to match the system image.
- HART Pass-Through Configuration: Ensure the HART enable check-box is checked in the module configuration properties inside Control Builder to allow Field Device Manager (FDM) software to pass asset diagnostic data through channels 1-8.
Frequently Asked Questions (FAQ)
Q: What distinguishes the “8C-” prefix from the “CC-” prefix in Honeywell Series C modules?
A: The “8C” prefix designates that the module comes factory-equipped with conformal coating to protect internal circuitry against corrosive gases and industrial contaminants (Class G3 environment rating). The “CC” prefix indicates standard non-coated or basic modules.
Q: Why choose a New Surplus 8C- card over a refurbished module?
A: Refurbished process modules have often been exposed to elevated cabinet temperatures and chemical atmospheres for years, causing degradation of onboard electrolytic capacitors and solder joints. Our New Surplus inventory delivers 100% unused, zero-runtime hardware with pristine conformal coating.
Q: Is this 8C- card an authentic Honeywell component?
A: Yes. All inventory is guaranteed original Honeywell manufacture with verifiable part numbers (51454357-175). Every unit undergoes visual, pin connector, and electrical verification prior to dispatch.
Q: Does this module support hot-swapping under live process conditions?
A: Yes. Series C I/O modules support Removal and Insertion Under Power (RIUP). You can safely remove and replace an 8C- card without powering down the C300 controller or disturbing adjacent I/O modules on the same IOTA bar.
Q: What happens to the field output current if communication with the C300 controller fails?
A: The module behavior during loss of communication is user-configurable in Control Builder. Channels can be set to hold their last valid value (Hold Last Value) or drive to a pre-defined safe state value (e.g., 4mA or 0mA).
Q: What warranty applies to this New Surplus Honeywell module?
A: We provide a full 1-Year Comprehensive Replacement Warranty. If any operational fault occurs under normal working conditions within 12 months, we will replace the unit or issue a full refund.
